258 results on '"Hyphessobrycon"'
Number of results to display per page
Search Results
2. Comparative mitochondrial genomics of tetras: insights into phylogenetic relationships in Characidae.
- Author
-
Xu, Wei, Wang, Jiachen, Xu, Runfeng, Jiang, Haoming, Ding, Jiayu, Wu, Han, Wu, Yongbo, and Liu, Hongyi
- Subjects
- *
CHARACIDAE , *MITOCHONDRIAL DNA , *MORPHOLOGY , *BAYESIAN analysis - Abstract
Although classical morphological classification within the Characidae has long history, this taxonomic perspective is now challenged when using mitochondrial genes to investigate phylogeny of this family. We discovered the problems of classical taxonomic systems from the point of mitochondrial genome of Characidae species. Here, six newly sequenced complete mitogenomes of Characidae (H. armstrongi, H. ocellifer, H. amapaensis, H. anisitsi, H. socolofi, and P. riddlei) are presented. The six mitogenomes were all typical circular molecule, with total lengths ranging from 16,789 to 18,141 bp. Base composition analysis suggested that the mitochondrial sequences were biased toward A and T, with A + T content ranged from 57.40% for H. anisitsi to 60.38% for H. ocellifer. The Bayesian analysis based on sequences of 35 different mitogenomes did not fully support the arrangement of genera within Characidae family. These results might indicate some problems with the current taxonomic system of Characidae, and contribute to further studies on the Characidae phylogeny. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
3. Mitochondrial genomes of five Hyphessobrycon tetras and their phylogenetic implications
- Author
-
Wei Xu, Shupeng Lin, and Hongyi Liu
- Subjects
Characidae ,Hyphessobrycon ,Mitochondrial genome ,molecular phylogeny ,tandem repeat ,Ecology ,QH540-549.5 - Abstract
Abstract To date, the taxonomic status and phylogenetic affinities within Hyphessobrycon, even among other genera in Characidae, remain unclear. Here, we determined five new mitochondrial genomes (mitogenomes) of Hyphessobrycon species (H. elachys, H. flammeus, H. pulchripinnis, H. roseus, and H. sweglesi). The mitogenomes were all classical circular structures, with lengths ranging from 16,008 to 17,224 bp. The type of constitutive genes and direction of the coding strand that appeared in the mitogenomes were identical to those of other species in Characidae. The highest value of the Ka/Ks ratio within 13 protein‐coding genes (PCGs) was found in ND2 with 0.83, suggesting that they were subject to purifying selection in the Hyphessobrycon genus. Comparison of the control region sequences among seven Hyphessobrycon fish revealed that repeat units differ in length and copy number across different species, which led to sharp differences in mitogenome sizes. Phylogenetic trees based on the 13 PCGs did not support taxonomic relationships, as the Hyphessobrycon fish mixed with those from other genera. These data were combined to explore higher level relationships within Characidae and could aid in the understanding of the evolution of this group.
- Published
- 2021
- Full Text
- View/download PDF
4. Embryonic Development of Black Neon Tetra Hyphessobrycon herbertaxelrodi Géry, 1961.
- Author
-
Çelik, Pınar and Çelik, İhsan
- Subjects
- *
EMBRYOLOGY , *HYPHESSOBRYCON , *FISHERIES , *ENVIRONMENTAL engineering - Abstract
The current study described the embryonic development stages of black neon tetra (Hyphessobrycon herbertaxelrodi), an economic ornamental fish. We characterized the stages of the zygote, cleavage, blastula, gastrula, segmentation, pharyngula, and hatching occurring during embryogenesis, which emphasizes changing spectrum of the main development processes from fertilization to incubation. The findings were put forth and photographed by examining live embryos under microscopy. Embryonic development of black neon tetra concluded at 24 ± 0.5°C water temperature at 20-21 hours. The first embryonic division occurs within the first 43 minutes after fertilization, and the process goes on to blastula at 02 hours and 28 minutes. The gastrula stage began at 02.57 hours, while 6 somite segmentation stages were observed to occur at 08.14 hours. Following the pharyngula stage seen between 17 to 20 hours, the hatching occurred at 20-21hours. The results of this study can provide significant benefits to professional breeders in the aquaculture of black neon tetra and other ornamental fish species. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
5. Mitochondrial genomes of five Hyphessobrycon tetras and their phylogenetic implications.
- Author
-
Xu, Wei, Lin, Shupeng, and Liu, Hongyi
- Subjects
- *
MITOCHONDRIA , *CHARACIDAE , *GENETIC code , *TANDEM repeats , *MOLECULAR phylogeny , *GENOMES - Abstract
To date, the taxonomic status and phylogenetic affinities within Hyphessobrycon, even among other genera in Characidae, remain unclear. Here, we determined five new mitochondrial genomes (mitogenomes) of Hyphessobrycon species (H. elachys, H. flammeus, H. pulchripinnis, H. roseus, and H. sweglesi). The mitogenomes were all classical circular structures, with lengths ranging from 16,008 to 17,224 bp. The type of constitutive genes and direction of the coding strand that appeared in the mitogenomes were identical to those of other species in Characidae. The highest value of the Ka/Ks ratio within 13 protein‐coding genes (PCGs) was found in ND2 with 0.83, suggesting that they were subject to purifying selection in the Hyphessobrycon genus. Comparison of the control region sequences among seven Hyphessobrycon fish revealed that repeat units differ in length and copy number across different species, which led to sharp differences in mitogenome sizes. Phylogenetic trees based on the 13 PCGs did not support taxonomic relationships, as the Hyphessobrycon fish mixed with those from other genera. These data were combined to explore higher level relationships within Characidae and could aid in the understanding of the evolution of this group. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
6. A new species of Hyphessobrycon (Characiformes, Characidae) from the upper Rio Jequitinhonha basin, Minas Gerais, Brazil, with comments on morphological similarities with Stethaprioninae species from headwater environments.
- Author
-
Teixeira, Tulio F., Dutra, Guilherme M., Penido, Iago S., Santos, Sérgio A., and Pessali, Tiago C.
- Subjects
- *
CHARACIDAE , *CHARACIFORMES , *SPECIES , *MARSHES , *SEXUAL dimorphism - Abstract
A new species of Hyphessobrycon is described from a marshland area in the headwaters of Rio Jequitinhonha basin, Minas Gerais, Brazil. The new species differs from congeners by presenting a single well‐delimited conspicuous humeral blotch, rounded to vertically oval, restricted to the area dorsal to the lateral‐line row of scales, without a narrower downward extension, greatest body depth anterior to dorsal‐fin origin, bony processes in anal and pectoral‐fin rays of males and four teeth in the inner row of the premaxillary bone. The new species presents a set of morphological features shared by some species currently assigned to Hasemania, Myxiops and to the Astyanax scabripinnis complex. Some of these features are discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
7. Reproductive biology of Hyphessobrycon eques (Characiformes: Characidae) in Southern Pantanal, Brazil.
- Author
-
Santana, C. A., Tondato, K. K., and Súarez, Y. R.
- Subjects
BIOLOGY ,HYPHESSOBRYCON ,POPULATION dynamics ,SEX ratio ,OVUM - Abstract
Copyright of Brazilian Journal of Biology is the property of Instituto Internacional de Ecologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2019
- Full Text
- View/download PDF
8. South American characids share very similar ionoregulatory characteristics.
- Author
-
Gonzalez, R.J., Cradeur, A., Guinnip, M., Mitchell, A., and Reduta, V.
- Subjects
- *
CHARACIDAE , *CARBONIC anhydrase , *COLONIZATION , *HYPHESSOBRYCON , *PH effect - Abstract
Abstract We examined ionoregulatory characteristics of four Characids from diverse locations in South America, emperor tetras (Nematobrycon palmeri), penguin tetras (Thayeria boehlkei), serpae tetras (Hyphessobrycon eques), and rosy tetras (Hyphessobrycon rosaceous). When held in 100 μmol L−1 Na+ water, tetras had J max values over 1100 nmol g−1 h−1, and K m values below 60 μmol L−1. When held in 1 mmol L−1 Na+ water kinetic parameters were unchanged. Low pH had no effect on Na+ uptake (J in Na). At pH 3.25, Na+ loss (J out Na) was stimulated 35–85% in two of the four species. To test the linkage of J in Na to NH 3 and H+ extrusion we measured J in Na during exposure to 1 mmol L−1 NH 4 Cl (HEA) and 100 μmol L−1 Acetazolemide (AZ). HEA stimulated J in Na of emperor tetras by 40%, but inhibited J in Na of penguin tetras by 50%; the two remaining species were unaffected. AZ (an inhibitor of carbonic anhydrase) inhibited J in Na of serpae tetras by 40%, but had no effect on the others. All tetras displayed ionoregulatory characteristics that are very similar to each other, which supports the argument that these physiological traits may be ancestral for this group and pre-date colonization of the Rio Negro. The novel finding that, J max and K m did not change after acclimation to 1 mM Na+ water indicates that, unlike in other species examined uptake is not plastic. The HEA and AZ results, along with pH insensitivity suggest Na+ uptake is not coupled to H+ extrusion or NH 3 excretion and leaves the exact mechanism involved unclear. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
9. Toxicity of copper oxide nanoparticles to Neotropical species Ceriodaphnia silvestrii and Hyphessobrycon eques.
- Author
-
Mansano, Adrislaine S., Souza, Jaqueline P., Cancino-Bernardi, Juliana, Venturini, Francine P., Marangoni, Valéria S., and Zucolotto, Valtencir
- Subjects
COPPER poisoning ,NANOPARTICLE toxicity ,HYPHESSOBRYCON ,AQUATIC ecology - Abstract
Abstract The increase of production and consumption of copper oxide nanostructures in several areas contributes to their release into aquatic ecosystems. Toxic effects of copper oxide nanoparticles (CuO NPs), in particular, on tropical aquatic organisms are still unknown, representing a risk for biota. In this study, the effects of rod-shaped CuO NPs on the Neotropical species Ceriodaphnia silvestrii and Hyphessobrycon eques were investigated. We also compared the toxicity of CuO NPs and CuCl 2 on these species to investigate the contribution of particles and cupper ions to the CuO NPs toxicity. Considering the low copper ions release from CuO NPs (<1%), our results revealed that the toxicity of CuO NPs to C. silvestrii and H. eques was mainly induced by the NPs. The 48 h EC 50 for C. silvestrii was 12.6 ± 0.7 μg Cu L
−1 and for H. eques the 96 h LC 50 was 211.4 ± 57.5 μg Cu L−1 of CuO NPs. There was significant decrease in reproduction, feeding inhibition and increase in reactive oxidative species (ROS) generation in C. silvestrii exposed to CuO NPs. In fish H. eques , sublethal exposure to CuO NPs caused an increase in ROS generation in gill cells and an increase in cells number that were in early apoptotic and necrotic stages. Our results showed that CuO NPs caused toxic effects to C. silvestrii and H. eques and ROS play an important role in the toxicity pathway observed. Data also indicated that C. silvestrii was among the most sensitive species for CuO NPs. Based on predicted environmental concentration in water bodies, CuO NPs pose potential ecological risks for C. silvestrii and H. eques and other tropical freshwater organisms. Graphical abstract Image 1 Highlights • CuO NPs caused negative effects on feeding, reproduction and survival of C. silvestrii. • CuO NPs increased apoptosis and necrosis in H. eques gill cells. • ROS played an important role in the toxicity pathway. • CuO NPs pose potential ecological risks for Neotropical freshwater organisms. CuO NPs cause toxic effects to C. silvestrii and H. eques in environmentally relevant concentrations, posing potential risks for these species and the Neotropical biota. [ABSTRACT FROM AUTHOR]- Published
- 2018
- Full Text
- View/download PDF
10. A new species of Hyphessobrycon Durbin from northeastern Brazil: evidence from morphological data and DNA barcoding (Characiformes, Characidae).
- Author
-
Guimarães, Erick Cristofore, De Brito, Pâmella Silva, Feitosa, Leonardo Manir, Carvalho-Costa, Luís Fernando, and Ottoni, Felipe Polivanov
- Subjects
- *
HYPHESSOBRYCON , *GENETIC barcoding , *CHARACIFORMES , *CHARACIDAE , *BIOLOGICAL classification - Abstract
A new species of Hyphessobrycon is described for the upper Munim and Preguiças river basins, northeastern Brazil, supported by morphological and molecular species delimitation methods. This new species belongs to the Hyphessobrycon sensu stricto group, as it has the three main diagnostic character states of this assemblage: presence of a dark brown or black blotch on the dorsal fin, absence of a black midlateral stripe on its flank and the position of Weberian apparatus upward horizontal through dorsal margin of operculum. Our phylogenetic analysis also supported the allocation of the new species in this group; however, it was not possible to recover the species sister-group. Pristella maxillaris and Moenkhausia hemigrammoides were recovered as the sister-clade of the Hyphessobrycon sensu stricto group. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
11. Expression of genes related to metal metabolism in the freshwater fish Hyphessobrycon luetkenii living in a historically contaminated area associated with copper mining.
- Author
-
Moreno Abril, Sandra Isabel, Dalmolin, Camila, Costa, Patrícia Gomes, and Bianchini, Adalto
- Subjects
- *
HYPHESSOBRYCON , *COPPER poisoning , *GENE expression , *METALLOTHIONEIN , *COPPER mining - Abstract
Copper (Cu) mining in Minas do Camaquã-Brazil, released significant amounts of metals into the João Dias creek, where Hyphessobrycon luetkenii inhabit. Because the involvement of Cu in biological processes its concentration and availability is regulated by molecules as the metal regulatory transcription factor (MTF-1), metallothionein (MT) and transporters (ATP7A and CTR1). These genes were whole sequenced and their expression (GE) evaluated in gills, liver and intestine. Were collected fish in non-contaminated and contaminated (Cu 3.4-fold higher) sites of the creek (CC and PP) and respectively translocated (CP and PC) for 96 h. The GE of the non-translocated groups evidenced that MT, MTF-1 and CTR1 have organ specific differences between both communities. Additionally the translocation allowed to identify organ specific changes associated with the activation/inactivation of protective mechanisms. These findings indicate that MTF-1, MT and CTR-1 GE play an important role in the tolerance of H. luetkenii to Cu contamination. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
12. New remarkable sexually dimorphic miniature species of Hyphessobrycon (Characiformes: Characidae) from the upper Rio Tapajós basin.
- Author
-
Camelier, P., Dagosta, F. C. P., and Marinho, M. M. F.
- Subjects
- *
HYPHESSOBRYCON , *SEXUAL dimorphism , *FINS (Anatomy) , *SPECIES , *CHARACIFORMES , *FISHES - Abstract
A new miniature species of Hyphessobrycon is described from an affluent of the Rio Papagaio, tributary of the Rio Juruena, upper Rio Tapajós basin, Mato Grosso State, Brazil. The new species can be distinguished from its congeners by having a remarkable secondary sexual dimorphism in its live colouration (males are red and females yellow), well‐defined and relatively narrow dark midlateral stripe extending from tip of snout to tip of middle caudal‐fin rays, absence of humeral blotch, 15–18 branched anal‐fin rays and five or six branched pelvic‐fin rays. The sexually dimorphic colouration of the new species is briefly discussed regarding its temporal variation. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
13. Development of secondary sexual characters and their relationship to ontogeny and seasonal reproductive period in Hyphessobrycon igneus (Ostariophysi: Characiformes).
- Author
-
Schönhofen Longoni, L., Giora, J., and Bernhardt Fialho, C.
- Subjects
- *
HYPHESSOBRYCON , *FISH reproduction , *CHARACIDAE , *FINS (Anatomy) , *FISH morphology , *ONTOGENY , *BEHAVIOR - Abstract
Sexual dimorphism in size, anal-fin shape and coloration of Hyphessobrycon igneus, Characidae, were examined. Males were more frequent at larger body sizes, confirming body size as a sexually dimorphic trait. Anal-fin shape and the colour of all fins were the same for females and juveniles, differing only in adult males. Likewise, only adult males had bony hooks on fin rays; larger and more sexually mature males had the most numerous and developed hooks and hooks were most developed in degree and number during peak reproductive periods. Fin hooks regressed in number and developmental degree after the reproductive period, but restarted development with the beginning of the new reproductive period without completely disappearing. Results show that bony hooks have a development and regression cycle related to reproductive seasonality. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
14. Redescription of Hyphessobrycon itaparicensis, a senior synonym of H. sergipanus (Characiformes: Characidae).
- Author
-
Zanata, Angela M., Camelier, Priscila, Carvalho, Fernando R., and Lima, Sergio M. Q.
- Subjects
- *
HYPHESSOBRYCON , *CHARACIFORMES , *FISH populations , *FISH morphology , *MOLECULAR recognition , *COASTS - Abstract
Hyphessobrycon itaparicensis was originally described from a small stream in the Itaparica coastal island, Bahia State, Brazil, and has been sampled in several coastal rivers draining Bahia and Sergipe States. Broad examination of type material and recently collected specimens resulted in the redescription provided herein. The presence of one humeral blotch, absence of pseudotympanum, and conservation aspects of H. itaparicensis are briefly discussed. Data obtained from the original description, paratypes and topotypes of H. sergipanus showed broad overlap with H. itaparicensis and absence of morphological diagnostic features supporting the recognition of H. sergipanus as a valid species. Thus, H. sergipanus is considered as junior synonym of H. itaparicensis. We emphasize the need of examining large population samples and type material of similar congeners to avoid improper propositions of new specific names. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
15. Hyphessobrycon bussingi Ota, Carvalho & Pavanelli 2020
- Author
-
De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S., and Da Graça, Weferson J.
- Subjects
Actinopterygii ,Characidae ,Hyphessobrycon bussingi ,Animalia ,Biodiversity ,Characiformes ,Hyphessobrycon ,Chordata ,Taxonomy - Abstract
Hyphessobrycon bussingi Ota, Carvalho & Pavanelli, 2020: 404, fig. 1a. Paratypes: 1 lot, 9 specimens — NUP 22293, 9, 27.2–34.0 mm SL: Costa Rica, Limón, stream tributary of río Gandoca, finca Elida Morales, río Sixaola basin, 09°34’10”N, 82°37’19.7”W, W. McLarney, 18 Mar 1983.
- Published
- 2022
- Full Text
- View/download PDF
16. Hyphessobrycon uaiso Carvalho & Langeani 2013
- Author
-
De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S., and Da Graça, Weferson J.
- Subjects
Hyphessobrycon uaiso ,Actinopterygii ,Characidae ,Animalia ,Biodiversity ,Characiformes ,Hyphessobrycon ,Chordata ,Taxonomy - Abstract
Hyphessobrycon uaiso Carvalho & Langeani, 2013: 527; fig. 1. Paratypes: 1 lot, 15 specimens —NUP 1090, 15, 24.9–45.8 mm SL: Brazil, Minas Gerais, Uberaba, Ponte Alta District, headwaters of rio Uberaba, near BR-262 road, 19°40’58.7”S, 47°40’7.3”W, 1,020 meters a.s.l., F. R. Carvalho, F. Langeani, H.F. Chaves, F.O. Martins & C.P. Ferreira, 8 Sep 2006., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 7, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Carvalho, F. R. & Langeani, F. (2013) Hyphessobrycon uaiso: new characid fish from the rio Grande, upper rio Parana basin, Minas Gerais State (Ostariophysi: Characidae), with a brief comment about some types of Hyphessobrycon. Neotropical Ichthyology, 11 (3), 525 - 536. https: // doi. org / 10.1590 / S 1679 - 62252013000300006"]}
- Published
- 2022
- Full Text
- View/download PDF
17. Hyphessobrycon veredus Teixeira, Dutra, Penido, Santos & Pessali 2019
- Author
-
De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S., and Da Graça, Weferson J.
- Subjects
Actinopterygii ,Hyphessobrycon veredus ,Characidae ,Animalia ,Biodiversity ,Characiformes ,Hyphessobrycon ,Chordata ,Taxonomy - Abstract
Hyphessobrycon veredus Teixeira, Dutra, Penido, Santos & Pessali, 2019: 141, fig. 1. Paratypes: 1 lot, 2 specimens — NUP 21117, 2, 37.9–44.7 mm SL: Brazil, Minas Gerais, Olhos D'água, Vereda Volta da Capoeira, tributary of Ribeirão da Areia, rio Jequitinhonha basin, 17°15’29.54”S, 43°43’10.10”W, T. C. Pessali & A.A. Rodrigues, 7 Jan 2016., Published as part of De Oliveira, Rianne C., Ota, Renata R., Deprá, Gabriel C., Zawadzki, Cláudio H., Pavanelli, Carla S. & Da Graça, Weferson J., 2022, Catalog of type specimens of the fish collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUP), Universidade Estadual de Maringá Paraná, Brazil, pp. 1-43 in Zootaxa 5128 (1) on page 7, DOI: 10.11646/zootaxa.5128.1.1, http://zenodo.org/record/6479497, {"references":["Teixeira, T. F., Dutra, G. M., Penido, I. S., dos Santos, S. A. & Pessali, T. C. (2019) A new species of Hyphessobrycon (Characiformes, Characidae) from the upper Rio Jequitinhonha basin, Minas Gerais, Brazil, with comments on morphological similarities with Stethaprioninae species from headwater environments. Journal of Fish Biology, 96, 140 - 173. https: // doi. org / 10.1111 / jfb. 14198"]}
- Published
- 2022
- Full Text
- View/download PDF
18. Hyphessobrycon bayleyi Lima & Bastos & Rapp Py-Daniel & Ota 2022, new species
- Author
-
Lima, Fl��vio C. T., Bastos, Douglas A., Rapp Py-Daniel, L��cia H., and Ota, Rafaela P.
- Subjects
Actinopterygii ,Characidae ,Hyphessobrycon bayleyi ,Animalia ,Biodiversity ,Characiformes ,Hyphessobrycon ,Chordata ,Taxonomy - Abstract
Hyphessobrycon bayleyi, new species (Figs. 1���4) Hemigrammus marginatus (not Ellis): G��ry, 1964: 27, fig. 4 (photo in life), 32 (Peru, Loreto, ���surroundings of Iquitos���; specimen examined); L��ling, 1981: 175 (upper photo), 176 (Peru, Ucayali, Pucallpa, ���Weisswasserbach��� at road to Tournavista; specimen not examined); Ortega & Vari, 1986: 8 (listed for Peru; based on G��ry, 1964); Bogot��-Gregory & Maldonado-Ocampo, 2006: 67 (listed, Amazon basin, Colombia; see Discussion); Bejarano et al., 2006: 362 (Colombia, Caquet��, R��o Mesay, Rio Caquet�� basin; specimens examined); Maldonado-Ocampo et al., 2008: 167 (in part; Amazon basin, Colombia; based on Bogot��-Gregory & Maldonado-Ocampo, 2006); Ortega et al., 2010: 36 (Peru, Amazon basin; listed, based presumably on Ortega & Vari, 1986); Barriga, 2012: 107 (Ecuador, R��o Napo basin); Meza-Vargas et al., 2021: 18 (Peru, Departamento Loreto). Hemigrammmus sp.: Claro-Garc��a et al., 2013: 1413, 1416, 1423 (Brazil, Acre, rio Acre basin; photo; specimens examined). Hyphessobrycon diancistrus (not Weitzman): Lima et al., 2013: 278���279 (in part; Brazil, middle rio Madeira basin; see Remarks). Moenkhausia intermedia (non Eigenmann): Galvis et al., 2007: 384, fig. 158 (Colombia, Amazonas, Puerto Nari��o, R��o Loreto Yacu; photo in life; specimen not examined). Holotype: ZUEC 17121 (male, 33.4 mm SL): Brazil, Amazonas, Benjamin Constant, igarap�� do Palhau, Ramal do Incra, 4��24���28������S, 70��1���24������W; F.C.T. Lima, C.R. Moreira, G.N. Salvador & N. Flausino Jr., 16 Nov 2017. Paratypes: Brazil, Amazonas. ZUEC 15501 (9, 2 females, 34.1���36.0 mm SL, 5 males, 31.1���36.0 mm SL); ANSP 206907 (2, 1 female, 34.7 mm SL, 1 male 32.4 mm SL); LBP 26061 (1, male, 31.4 mm SL, alcohol-preserved); FMNH 141250 (2, 1 female, 33.5 mm SL, 1 male, 32.8 mm SL); MCZ 173977 (2, 1 female, 35.3 mm SL, 1 male, 31.8 mm SL): same data as holotype. ZUEC 15040 (3, 2 females, 32.5���34.2 mm SL, 1 male, 29.1 mm SL): Benjamin Constant, igarap�� Cajarizinho (trib. rio Solim��es), 4��26���41������S, 69��59���56������W; F.C. T. Lima, C. R. Moreira, G.N. Salvador & N. Flausino Jr., 17 Nov 2017. ZUEC 16963 (5, 2 males, 27.2���28.5 mm SL, 1 female, 32.8 mm SL, 2 sex undetermined, 24.9���27.8 mm SL): Benjamin Constant, igarap�� da Prosperidade, road Benjamin Constant/Atalaia do Norte, 4��26���17������S, 70��5���22������W; F.C. T. Lima, A.A. Acosta & A. Camacho, 11 Aug 2018. ZUEC 15475 (6, 2 females, 35.4���37.2 mm SL, 4 males, 31.6���33.3 mm SL, 2 C&S, 32.8���35.4 mm SL); MCP 54775 (2, 1 female, 34.7 mm SL, 1 male, 32.0 mm SL); MNRJ 51459 (2, 1 female, 34.1 mm SL, 1 male, 32.8 mm SL); CAS 246907 (2, 1 female, 36.0 mm SL, 1 male, 33.6 mm SL): Atalaia do Norte, igarap�� do Adolfo, road Benjamin Constant/Atalaia do Norte, 4��26���5������S, 70��7���19������W; F.C. T. Lima, C. R. Moreira, G.N. Salvador & N. Flausino Jr., 11 Nov 2017. ZUEC 15569 (2 females, 33.6���33.9 mm SL): Atalaia do Norte, igarap�� do Pixaim (trib. rio Javari), 4��21���46������S, 70��12���5������W; F.C. T. Lima, C. R. Moreira, G.N. Salvador & N. Flausino Jr., 10 Nov 2017. ZUEC 15432 (2, 1 male, 29.7 mm SL, 1 female, 32.2 mm SL): Atalaia do Norte, igarap�� do Tampinha (trib. rio Javari), 4��21���53������S, 70��11���52������W; F.C. T. Lima, C. R. Moreira, G.N. Salvador & N. Flausino Jr., 13 Nov 2017. ZUEC 15101 (5, 1 male, 31.7 mm SL, 4 sex undetermined, 25.4���27.0 mm SL, 1 c&s, 27.0 mm SL): Atalaia do Norte, igarap�� Boa Vista (trib. rio Itaqua��), above the mouth of rio Quixito, 4��26���37������S, 70��14���11������W; F.C. T. Lima, C. R. Moreira, G.N. Salvador & N. Flausino Jr., 15 Nov 2017. INPA 56395 (2, 1 male, 30.2 mm SL, 1 sex undetermined, 24.4 mm SL): Atalaia do Norte, pond behind comunidade Cachoeira, rio Itaqua�� (trib. rio Javari), 4��29���7.33������S, 70��16���45.26������W; J. Zuanon, G. Torrente-Villara & D. Bastos, 26 Aug 2017. INPA 56064 (1, male, 27.7 mm SL): Atalaia do Norte, Aldeia S��o Pedro, below comunidade Palmari (rio Javari basin), 4��17���55.36������S, 70��16���16.25������W; J. Zuanon & D. Bastos, 22 Aug 2017. INPA 56018 (1, sex undetermined, 25.5 mm SL): Atalaia do Norte, stream tributary of rio Javari at comunidade Palmari, 4��17���37.61������S, 70��17���29.51������W; J. Zuanon, G. Torrente-Villara & D. Bastos, 21 Aug 2017. INPA 55237 (18, sex undetermined, 22.1���26.3 mm SL): Atalaia do Norte, Igarap�� da Pousada (trib. rio Itaqua��), Lago do Contrabando, near comunidade Santa Cruz (rio Javari basin), 4��21���46.17������S, 70��16���13.26������W; J. Zuanon & D. Bastos, 14 Aug 2017. INPA 56509 (1, sex undetermined, 21.9 mm SL): Rio Quixito, above its mouth at rio Itaqua��, 4��26���9.82������S, 70��20���10.93������W; J. Zuanon, G. Torrente-Villara, D. Bastos, F. Rocha, R. Ribeiro, A. Cella-Ribeiro & S. Hashimoto, 28 Aug 2017. INPA 57267 (3, males, 27.6���30.8 mm SL, 1 C&S, 30.4 mm SL): S��o Paulo de Oliven��a, igarap�� Taboca, tributary of rio Camati��, Nossa Senhora de Nazar�� community, 3��39���04���S 69��16���51���W; L.H. Rapp Py-Daniel, A.L.C. Canto & A. Negr��o, 31 Jan 2008. INPA 49142 (2, females, 30.0��� 30.7 mm SL): Japur��, stream trib. rio Japur��, 1��50���56���S 69��01���43���W; P.M. Ito & R. Collins, 6 Sep 2014. INPA 49254 (5, females, 27.7���38.9 mm SL): stream trib. rio Japur��, 1��42���52���S 69��07���40���W; P.M. Ito & R. Collins, 8 Sep 2014. ZUEC 15388 (1, sex undetermined, 28.5 mm SL): Tef��, Igarap�� A��u (trib. rio Solim��es), Ramal do Emade, 3��25���23������S, 64��37���6������W; F.C. T. Lima, G.N. Salvador, N. Flausino Jr. & J.A. Oliveira, 26 Nov 2017. Peru, Loreto. UF 242746 (1, female, 35.9 mm SL): Iquitos, Quebrada San Pedro, road Iquitos/Nauta, 4��18���14������S, 73��31���16������W; W.G. R. Crampton, R.E. Reis, H. Ortega & F.C. T. Lima, 7 Jan 2004. MHNG 1576.059 (1, sex undetermined, 30.3 mm SL); MHNG 2180.078 (1, sex undetermined, 28.0 mm SL): Jenaro Herrera, Quebrada Copal; P. de Rham, 18 Oct 1977. MUSM 66974 (2, 1 female, 37.7 mm SL, 1 male, 30.9 mm SL): Jenaro Herrera, Quebrada Copal, km 15 at the road Jenaro-Herrera-Colonia Angamos, 4��56���22������S, 73��30���25������W; H. Ortega, W.G. R. Crampton, R.E. Reis & F.C. T. Lima, 10 Jan 2004. Colombia, Amazonas. ICNMHN 17244 (8, 1 sex undetermined, 28.4 mm SL, 7 males, 34.1���38.0 mm SL): Quebrada Jotabey��, trib. R��o Apap��ris, 0��37���20������S, 70��13���32������W; F. Arbel��ez, 27���30 March 2009. ICNMHN 5066 (167, 102 females, 32.7���43.0 mm SL, 65 males, 32.2���36.8 mm SL): Leticia, R��o Pur��, 2��7���5������S, 69��37���50������W; J.D. Lynch, Jan 2000. Not types: Brazil, Amazonas. MHNG 2180.074 (1, sex undetermined, 27.0 mm SL): rio Purus, Boca do Tapau��, 5��38���S, 63��12���W; H. R. Axelrod, H. Schultz & F. Terofal, Nov 1963. Brazil, Acre: MCP 37745 (7, 23.7���26.9 mm SL): Sena Madureira, igarap�� Taquari (trib. rio Antimari, rio Acre basin), at road BR-364, 9��27���49������S, 68��22���43������W; R. E. Reis, P.A. Buckup, F. Langeani & F.C. T. Lima, 21 Jul 2004. MCP 37771 (10 of 27, 26.8���28.4 mm SL): Bujari, Igarap�� Marizinho (trib. rio Antimari, rio Acre basin), at road BR-364, 9��36���41������S, 68��14���40������W; P.A. Buckup, J.F. Pezzi da Silva, P. Lehmann & V. A. Bertaco, 20 Jul 2004. MZUEL 6886 (2, 28.9���29.4 mm SL): Bujari, Igarap�� Fuma��a (trib. rio Antimari, rio Acre basin), at road BR-364, 9��34���23������S, 68��16���50������W; O.A. Shibatta & A. Claro-Garcia, 6 Oct 2010. Peru, Loreto. NRM 26870 (1, sex undetermined, 22.0 mm SL): quebrada Pintoyacu (R��o Itaya drainage), at road Iquitos-Nauta; S.O. Kullander et al., 3 Jul 1986. NRM 26943 (1, sex undetermined, 25.4 mm SL); NRM 30579 (12, sex undetermined, 22.8���30.9 mm SL): Quebrada Toc��n Grande, km 33 of Iquitos-Nauta road, c. 4��2���S, 73��26���W; S.O. Kullander et al., 4 Jul 1986. MHNG 2180.084 (1, 38.3 mm SL): ���surroundings of Iquitos ���; H. R. Axelrod, 27 Dec 1963. MHNG 2225.01 (2, 23.4���27.3 mm SL): Jenaro Herrera, Quebrada Copal (trib. R��o Ucayali), c. 4��56���S, 73��30���W; P. de Rham, 1 Sept 1981. NRM 15713 (2, sex undetermined, 22.3���24.1 mm SL): Jenaro Herrera, Quebrada Copal, km 15 at the road Jenaro-Herrera-Colonia Angamos, 4��56���22������S, 73��30���25������W; S.O. Kullander et al., 29 Aug 1983. MHNG 2180.089 (6, sex undetermined, 21.5���26.4 mm SL): R��o Huytoyacu (trib. R��o Paztaza) at Nuevo Progresso, c. 3��37���S, 76��25���W; C. Meyer, 20 Jul 1975. NRM 15714 (1, sex undetermined, 19.8 mm SL): Colonia Angamos, quebrada trib. Rio Galvez (trib. Rio Yavari), 20 min. upstream from Colonia Angamos, c. 5��10���40������S, 72��53���30������W; S.O. Kullander et al., 31 Jul 1984. NRM 26920 (26, sex undetermined, 15.0��� 24.5 mm SL): Loreto, Colonia Angamos, quebrada trib. Rio Galvez (trib. Rio Yavari), 25 min. upstream from Colonia Angamos, c. 5��10���40������S, 72��53���30������W; S.O. Kullander et al., 31 Jul 1984. Colombia: MPUJ 13846 (1, male, 31.7 mm SL): Caquet��, Solano, ca��o Trocha, trib. R��o Rutuya, rio Caquet�� basin, 0��20���59������N, 74��45���18������W; J. Maldonado-Ocampo et al., 18 Apr 2018. ICNMHN 4271 (2, sex undetermined, 21.4���21.8 mm SL): Caquet��, R��o Mesay, c. 0��4���27������N, 72��27���5������W; I. Bejarano & M.P. Blanco, July���Sept 2000. ICNMHN 13765 (4, 1 male, 31.4 mm SL, 3 females, 31.5���35.2 mm SL): Amazonas, creek 45 minutes above Puerto Nari��o, c. 3��45���S, 70��25���W; H. Hanima, H. Boschung & R. Beckham, 3 Jan 1972. ICNMHN 18712 (1, male, 34.8 mm SL): Amazonas, Puerto Asis, Vereda La Rosa, Quebrada Cadenas (R��o Putumayo basin), 0��26���16������N, 76��17���10������W; M. Murc��a, 26 Jul 2014. ICNMHN 17233 (7, 24.0��� 32.8 mm SL, largest specimen a mature male): Amazonas, Rio Apap��ris, above Raudal Jiri-Jirimo, 0��2���35������S, 70��56���53������W; F. Arbel��ez, 19���21 March 2009. CIACOL 3183 (26, sex undetermined, 24.4���38.4 mm SL): Amazonas, ca��o Hormiga, near village of Buenos Aires, c. 3��10���S, 69��59���W; A.A. Santos & E.C. Agudelo, 21 Feb 2018. Ecuador: FMNH 102587 (13, 13.5���34.7 mm SL): Napo, trib. R��o Tarapuy (trib. R��o Cuyabeno, R��o Napo basin), c. 0��10���S, 75��57���W; D.J. Stewart et al., 2 Dec 1983 (picture only). Tentative identifications (see Remarks): All from Brazil, Rond��nia. UFRO-I 4892 (2 of 5, 23.5���24.6 mm SL): Porto Velho, rio Madeira, Cachoeira de Teot��nio, 8��51���32������S, 64��3���46������W; J.L.O. Birindelli et al., 24 Oct 2009. UFRO-I 9026 (5 of 12, 22.7���23.1 mm SL): Porto Velho, rio Madeira, at mouth of igarap�� Jatuarana, 8��50���33������S, 64��2���55������W; E. Silva et al., 8 Sept 2009. Diagnosis. Hyphessobrycon bayleyi can be distinguished from all congeners, except from Hy. diancistrus and Hy. otrynus by presenting two symmetrical dark blotches at the distal portion of the caudal-fin lobes (vs. absence of two symmetrical dark blotches at the distal portion of the caudal-fin lobes in the remaining congeners). The new species can be distinguished from Hy. diancistrus and Hy. otrynus by the presence, in mature males, of typically a single large hook at last unbranched anal-fin ray (vs. presence in mature males typically of two large hooks, the first at last unbranched anal-fin ray, the second at first branched anal-fin ray). It can be additionally diagnosed from Hy. otrynus by presenting a patch of dark pigmentation on dorsal fin (vs. dorsal fin without any patch of dark pigmentation), and from Hyphessobrycon diancistrus by presenting a higher body depth (22.4���32.5 % SL, mean 28.4% SL, n = 63 vs. 19.0���26.8 % SL, mean 22.9 % SL, n = 76), and by a lower number of anal-fin branched rays (18���22, n = 63 vs. 12���16, n = 76). Hyphessobrycon bayleyi can be distinguished from two non-congeners which share the same color pattern, Hemigrammus durbinae and He. marginatus by presenting a patch of dark pigmentation on dorsal fin (vs. dorsal fin without any patch of dark pigmentation), by presenting anterior portion of anal fin with relatively broad dark stripe (vs. two parallel narrow stripes in He. durbinae, and a single narrow stripe in He. marginatus), and by the presence, in mature males, of a large hook at last unbranched anal-fin ray (vs. absence of hooks of any size in males of He. durbinae and He. marginatus). See the Discussion, for additional comparisons with these species. Description. Morphometric data summarized in Table 1. Body compressed, moderately slender; greatest body depth anterior to dorsal-fin origin. Dorsal profile of head slightly convex from tip of snout to anterior naris; straight to gently concave from latter point to tip of supraoccipital spine. Dorsal profile of body slightly convex from tip of supraoccipital spine to dorsal-fin origin; posteroventraly slanted and straight from latter point to adipose-fin origin and slightly concave along caudal peduncle. Ventral profile of body slightly convex from tip of dentary to anal-fin origin, posteroventraly slanted along anal-fin base. Ventral profile of caudal peduncle slightly concave. Mouth terminal; jaws equal, isognathous. Distal tip of maxillary extending slightly beyond vertical through anterior margin of eye. Premaxillary teeth in two rows, outer row composed by 1(1), 2*(36), or 3(26) tricuspid teeth, central cusp longer; inner row with 4(1) or 5*(62) bi- to pentacuspid teeth teeth, central cusp longer. Maxilla with 1(2) or 2(2) small, unicuspid teeth. Dentary with 9(1), 10(2), 11(1) teeth, anteriomost four teeth larger than remaining, tri- to pentacuspidate, remaining 5 ��� 7 teeth unicuspid. One specimen with second inner row of 4(1) unicuspid teeth, situated on inner margin of dentary, justaposed with outer unicuspid teeth (Fig. 3). Scales cycloid, with two to seven strongly marked radii, diverging from focus to posterior portion of scale; circuli well-marked anteriorly. Lateral line incomplete, slightly curved ventrally, with 7(1), 8(3), 9(12), 10*(17), 11(16), 12(8), 13(3), 14(2), or 15(1) pored scales; longitudinal series including perforated scales 29(1), 31(1), 32(1), 33(5), 34(8), 35(15), 36(22), 37*(6), 38(3), or 39(1). Scales rows between dorsal-fin origin and lateral line 5*(61) or 6(1). Scales rows between lateral line and pelvic-fin insertion 3*(61) or 4(1). Predorsal scales 10(7), 11*(40), or 12(16). Anal sheath along anal-fin base with 4 to 5 scales in a single row, covering base of first unbranched to fourth branched anal-fin rays. Circumpeduncular scales 12(9), 13*(36), or 14(18). Caudal-fin scales covering basis of upper and lower caudal-fin lobes margins, relatively large and few in number, concentrated over inner fin rays. Dorsal-fin rays ii,9*(63), first unbranched ray nearly one-third of second unbranched ray length; small ossification anterior to first unbranched ray present in four c&s specimens examined. Dorsal-fin origin at midbody or slightly behind this point. Insertion of first dorsal fin pterygiophore posterior to neural spine of 10 th (1) or 11 th (2) vertebrae. Adipose fin present. Pectoral-fin rays i,9 (5), 10(9), 11*(24), or 12(25). Pelvic-fin rays i,7*(63), its tip reaching anteriormost unbranched anal-fin rays. Anal-fin rays iv(2) ��� v(2), 18(4), 19(16), 20(25), 21*(14), or 22(2); last unbranched ray to fifth branched ray decreasing steeply in size, forming a distinctive anterior lobe; remaining rays decreasing very gradually decreasing in size to anal-fin terminus. Last anal-fin pterygiophore insertion behind hemal spine of 17th(4) vertebrae. Caudal fin forked, lobes slightly pointed, equal in size. Principal caudal-fin rays i,17,i (4); dorsal procurrent caudal-fin rays 10(1), 11(1), 12(1), or 13(1); ventral procurrent caudal-fin rays 9(2), 10(1), or 11(1). Vertebrae 36(4). Supraneurals 5(3) or 6(1). First gill arch with 2 (4) gill rakers on hypobranchial, 10 (4) on ceratobranchial, 1 (4) on cartilage between ceratobranchial and epibranchial, and 5 (1), 6(2) or 7(1) on epibranchial. Color in alcohol. Overall ground color light brown. Top of head, snout and tip of dentary dark gray as a result of dense concentration of dark chromatophores. Opercle and infraorbitals silvery in specimens retaining guanine. Predorsal midline dark gray, as a result of dense concentration of dark chromatophores covering entire surface of predorsal scales and upper margin of scales from scale row situated immediately below it. Post-dorsal midline with slightly less dense concentration of dark chromatophores, imparting a dark gray coloration. Lateral line slightly delineated by dark chromatophores. A moderately developed midlateral stripe, starting as a very narrow line slightly behind humeral region, broadening from vertical through dorsal-fin origin to caudal peduncle. Midlateral stripe at caudal peduncle fused with caudal peduncle blotch, with a roughly rhomboidal shape. Anal-fin basis with a conspicuous black stripe, broader at anterior portion of anal fin, from anal-fin origin to fourth to sixth branched anal-fin ray, becoming very narrow from that point to anal-fin terminus. Anal fin with dark chromatophores aligned in rows along posterior margin of fin rays. Dorsal fin with a dark patch of pigmentation situated at central portion of fin, between last unbranched and third branched fin rays. Remaining portions of dorsal fin hyaline or with scattered dark chromatophores. Pectoral, pelvic, and adipose fins hyaline. Caudal fin with two broad, symmetrical dark blotches situated on mid-region of upper and lower caudal-fin lobes, more intensely pigmented from outer fin ray to third or fourth branched rays. Small dark chromatophores scattered along caudal-fin margin, remaining caudal fin hyaline except for dark chromatophores at basis of middle c, Published as part of Lima, Fl��vio C. T., Bastos, Douglas A., Rapp Py-Daniel, L��cia H. & Ota, Rafaela P., 2022, A new sexually dimorphic Hyphessobrycon from the western Amazon basin (Characiformes: Characidae), pp. 253-266 in Zootaxa 5116 (2) on pages 254-262, DOI: 10.11646/zootaxa.5116.2.4, http://zenodo.org/record/6372795, {"references":["Gery, J. (1964) Upper Amazonian characoid fishes collected by Mr. Jack Roberts. Tropical Fish Hobbyist, 13 (4), 21 - 32 + 53 - 67.","Luling, K. H. (1981) Zwei unterschiedliche Fliesswasserbiotope im Einzugsgebiet des mittleren Ucayali (Ostperu) und ihre Fische. Bonner Zoologische Beitrage, 32 (1 - 2), 167 - 182.","Ortega, H. & Vari, R. P. (1986) Annotated checklist of the freshwater fishes of Peru. Smithsonian Contributions to Zoology, 437, 1 - 25. https: // doi. org / 10.5479 / si. 00810282.437","Bejarano, I., Blanco, M. P. & Mojica, J. I. (2006) La comunidade ictica del Rio Mesay durante el periodo de aguas altas (Caqueta, Amazonia colombiana). Caldasia, 28 (2), 359 - 370.","Maldonado-Ocampo, J. A., Vari, R. P. & Usma, J. S. (2008) Checklist of the freshwater fishes of Colombia. Biota Colombiana, 9 (2), 143 - 237. https: // doi. org / 10.21068 / bc. v 9 i 2.201","Bogota-Gregory, J. D. & Maldonado-Ocampo, J. A. (2006) Peces de la zona hidrogeografica de la Amazonia, Colombia. Biota Colombiana, 7 (1), 55 - 94. https: // doi. org / 10.21068 / bc. v 7 i 1.165","Ortega, H., Hidalgo, M., Correa, E., Espino, J., Chocano, L., Trevejo, G., Meza, V., Cortijo, A. M. & Quispe, R. (2010) Lista anotada de los peces de aguas continentales del Peru: estado actual del conocimiento, distribucion, usos y aspectos de conservacion. Ministerio del Ambiente, Direccion General de Diversidad Biologica - Museo de Historia Natural, UNMSM, Lima, 48 pp.","Barriga, R. (2012) Lista de peces de agua dulce e intermareales del Ecuador. Revista Politecnica, 30 (3), 83 - 119.","Meza-Vargas, V., Faustino-Fuster, D. R., Chuctaya, J., Hidalgo, M. & Ortega Torres, H. (2021) Checklist of freshwater fishes from Loreto, Peru. Revista Peruana de Biologia, 28 (e 21911), 1 - 28. https: // doi. org / 10.15381 / rpb. v 28 iespecial. 21911","Claro-Garcia, A., Vieira, L. J. S., Jarduli, L. R., Abrahao, V. P. & Shibatta, O. A. (2013) Fishes (Osteichthyes: Actinopterygii) from igarapes of the rio Acre basin, Brazilian Amazon. Check List, 9, 1410 - 1438. https: // doi. org / 10.15560 / 9.6.1410","Lima, F. C. T., Pires, T. H. S., Ohara, W. M., Jerep, F. C., Carvalho, F. R., Marinho, M. M. F. & Zuanon, J. (2013) Characidae. In: Queiroz, L. J., Torrente-Vilara, G., Ohara, W. M., Pires, T. H. S., Zuanon, J. & Doria, C. R. C. (Org.), Peixes do rio Madeira. Vol. I. Dialeto, Latin American Documentary, Sao Paulo, pp. 213 - 395.","Galvis, G., Sanchez-Duarte, P., Mesa-Salazar, L. M., Lopez-Pinto, Y., Gutierrez-E., M. A., Gutierrez-Cortes, A., Castano, M. L. & Castillo, C. C. (2007) Peces de la Amazonia colombiana con enfasis en especies de interes ornamental. Ministerio de Agricultura y Desarollo Rural / Universidad Nacional de Colombia / Instituto Amazonico de Investigaciones Cientificas, Bogota, 489 pp.","Lima, F. C. T. & Ribeiro, A. C. (2011) Continental-scale tectonic controls of biogeography and ecology. In: Albert, J. S. & Reis, R. E. (Eds.), Historical Biogeography of Neotropical Freshwater Fishes. University of California Press, Berkeley, California, pp. 145 - 164. https: // doi. org / 10.1525 / california / 9780520268685.003.0009","Dagosta, F. C. P. & de Pinna, M. (2019) The fishes of the Amazon: distribution and biogeographical patterns, with a comprehensive list of species. Bulletin of the American Museum of Natural History, 431, 1 - 163. https: // doi. org / 10.1206 / 0003 - 0090.431.1.1","Weitzman, S. H. & Palmer, L. (1997) A new species of Hyphessobrycon (Teleostei: Characidae) from the Neblina region of Venezuela and Brazil, with comments on the putative ' rosy tetra clade'. Ichthyological Exploration of Freshwaters, 7, 209 - 242.","Buhrnheim, C. M. & Malabarba, L. R. (2006) Redescription of the type species of Odontostilbe Cope, 1870 (Teleostei: Characidae: Cheirodontinae), and description of three new species from the Amazon basin. Neotropical Ichthyology, 4, 167 - 196. https: // doi. org / 10.1590 / S 1679 - 62252006000200004","Ota, R. P., Lima, F. C. T. & Pavanelli, C. S. (2014) A new species of Hemigrammus Gill, 1858 (Characiformes: Characidae) from the rio Madeira and rio Paraguai basins, with a redescription of H. lunatus. Neotropical Ichthyology, 12 (2), 265 - 279. https: // doi. org / 10.1590 / 1982 - 0224 - 20130176","Ota, R. P., Lima, F. C. T. & Pavanelli, C. S. (2015) A new species of Hemigrammus Gill, 1858 (Characiformes: Characidae) from the central and western Amazon and rio Parana-Paraguai basins. Zootaxa, 3948 (2), 218 - 232. https: // doi. org / 10.11646 / zootaxa. 3948.2.4"]}
- Published
- 2022
- Full Text
- View/download PDF
19. Hyphessobrycon bayleyi Lima & Bastos & Rapp Py-Daniel & Ota 2022, new species
- Author
-
Lima, Flávio C. T., Bastos, Douglas A., Rapp Py-Daniel, Lúcia H., and Ota, Rafaela P.
- Subjects
Actinopterygii ,Characidae ,Hyphessobrycon bayleyi ,Animalia ,Biodiversity ,Characiformes ,Hyphessobrycon ,Chordata ,Taxonomy - Abstract
Hyphessobrycon bayleyi, new species (Figs. 1–4) Hemigrammus marginatus (not Ellis): Géry, 1964: 27, fig. 4 (photo in life), 32 (Peru, Loreto, “surroundings of Iquitos”; specimen examined); Lüling, 1981: 175 (upper photo), 176 (Peru, Ucayali, Pucallpa, “Weisswasserbach” at road to Tournavista; specimen not examined); Ortega & Vari, 1986: 8 (listed for Peru; based on Géry, 1964); Bogotá-Gregory & Maldonado-Ocampo, 2006: 67 (listed, Amazon basin, Colombia; see Discussion); Bejarano et al., 2006: 362 (Colombia, Caquetá, Río Mesay, Rio Caquetá basin; specimens examined); Maldonado-Ocampo et al., 2008: 167 (in part; Amazon basin, Colombia; based on Bogotá-Gregory & Maldonado-Ocampo, 2006); Ortega et al., 2010: 36 (Peru, Amazon basin; listed, based presumably on Ortega & Vari, 1986); Barriga, 2012: 107 (Ecuador, Río Napo basin); Meza-Vargas et al., 2021: 18 (Peru, Departamento Loreto). Hemigrammmus sp.: Claro-García et al., 2013: 1413, 1416, 1423 (Brazil, Acre, rio Acre basin; photo; specimens examined). Hyphessobrycon diancistrus (not Weitzman): Lima et al., 2013: 278–279 (in part; Brazil, middle rio Madeira basin; see Remarks). Moenkhausia intermedia (non Eigenmann): Galvis et al., 2007: 384, fig. 158 (Colombia, Amazonas, Puerto Nariño, Río Loreto Yacu; photo in life; specimen not examined). Holotype: ZUEC 17121 (male, 33.4 mm SL): Brazil, Amazonas, Benjamin Constant, igarapé do Palhau, Ramal do Incra, 4º24’28’’S, 70º1’24’’W; F.C.T. Lima, C.R. Moreira, G.N. Salvador & N. Flausino Jr., 16 Nov 2017. Paratypes: Brazil, Amazonas. ZUEC 15501 (9, 2 females, 34.1–36.0 mm SL, 5 males, 31.1–36.0 mm SL); ANSP 206907 (2, 1 female, 34.7 mm SL, 1 male 32.4 mm SL); LBP 26061 (1, male, 31.4 mm SL, alcohol-preserved); FMNH 141250 (2, 1 female, 33.5 mm SL, 1 male, 32.8 mm SL); MCZ 173977 (2, 1 female, 35.3 mm SL, 1 male, 31.8 mm SL): same data as holotype. ZUEC 15040 (3, 2 females, 32.5–34.2 mm SL, 1 male, 29.1 mm SL): Benjamin Constant, igarapé Cajarizinho (trib. rio Solimões), 4º26’41’’S, 69º59’56’’W; F.C. T. Lima, C. R. Moreira, G.N. Salvador & N. Flausino Jr., 17 Nov 2017. ZUEC 16963 (5, 2 males, 27.2–28.5 mm SL, 1 female, 32.8 mm SL, 2 sex undetermined, 24.9–27.8 mm SL): Benjamin Constant, igarapé da Prosperidade, road Benjamin Constant/Atalaia do Norte, 4º26’17’’S, 70º5’22’’W; F.C. T. Lima, A.A. Acosta & A. Camacho, 11 Aug 2018. ZUEC 15475 (6, 2 females, 35.4–37.2 mm SL, 4 males, 31.6–33.3 mm SL, 2 C&S, 32.8–35.4 mm SL); MCP 54775 (2, 1 female, 34.7 mm SL, 1 male, 32.0 mm SL); MNRJ 51459 (2, 1 female, 34.1 mm SL, 1 male, 32.8 mm SL); CAS 246907 (2, 1 female, 36.0 mm SL, 1 male, 33.6 mm SL): Atalaia do Norte, igarapé do Adolfo, road Benjamin Constant/Atalaia do Norte, 4º26’5’’S, 70º7’19’’W; F.C. T. Lima, C. R. Moreira, G.N. Salvador & N. Flausino Jr., 11 Nov 2017. ZUEC 15569 (2 females, 33.6–33.9 mm SL): Atalaia do Norte, igarapé do Pixaim (trib. rio Javari), 4º21’46’’S, 70º12’5’’W; F.C. T. Lima, C. R. Moreira, G.N. Salvador & N. Flausino Jr., 10 Nov 2017. ZUEC 15432 (2, 1 male, 29.7 mm SL, 1 female, 32.2 mm SL): Atalaia do Norte, igarapé do Tampinha (trib. rio Javari), 4º21’53’’S, 70º11’52’’W; F.C. T. Lima, C. R. Moreira, G.N. Salvador & N. Flausino Jr., 13 Nov 2017. ZUEC 15101 (5, 1 male, 31.7 mm SL, 4 sex undetermined, 25.4–27.0 mm SL, 1 c&s, 27.0 mm SL): Atalaia do Norte, igarapé Boa Vista (trib. rio Itaquaí), above the mouth of rio Quixito, 4º26’37’’S, 70º14’11’’W; F.C. T. Lima, C. R. Moreira, G.N. Salvador & N. Flausino Jr., 15 Nov 2017. INPA 56395 (2, 1 male, 30.2 mm SL, 1 sex undetermined, 24.4 mm SL): Atalaia do Norte, pond behind comunidade Cachoeira, rio Itaquaí (trib. rio Javari), 4°29’7.33’’S, 70°16’45.26’’W; J. Zuanon, G. Torrente-Villara & D. Bastos, 26 Aug 2017. INPA 56064 (1, male, 27.7 mm SL): Atalaia do Norte, Aldeia São Pedro, below comunidade Palmari (rio Javari basin), 4°17’55.36’’S, 70°16’16.25’’W; J. Zuanon & D. Bastos, 22 Aug 2017. INPA 56018 (1, sex undetermined, 25.5 mm SL): Atalaia do Norte, stream tributary of rio Javari at comunidade Palmari, 4°17’37.61’’S, 70°17’29.51’’W; J. Zuanon, G. Torrente-Villara & D. Bastos, 21 Aug 2017. INPA 55237 (18, sex undetermined, 22.1–26.3 mm SL): Atalaia do Norte, Igarapé da Pousada (trib. rio Itaquaí), Lago do Contrabando, near comunidade Santa Cruz (rio Javari basin), 4°21’46.17’’S, 70°16’13.26’’W; J. Zuanon & D. Bastos, 14 Aug 2017. INPA 56509 (1, sex undetermined, 21.9 mm SL): Rio Quixito, above its mouth at rio Itaquaí, 4°26’9.82’’S, 70°20’10.93’’W; J. Zuanon, G. Torrente-Villara, D. Bastos, F. Rocha, R. Ribeiro, A. Cella-Ribeiro & S. Hashimoto, 28 Aug 2017. INPA 57267 (3, males, 27.6–30.8 mm SL, 1 C&S, 30.4 mm SL): São Paulo de Olivença, igarapé Taboca, tributary of rio Camatiã, Nossa Senhora de Nazaré community, 3°39’04”S 69°16’51”W; L.H. Rapp Py-Daniel, A.L.C. Canto & A. Negrão, 31 Jan 2008. INPA 49142 (2, females, 30.0– 30.7 mm SL): Japurá, stream trib. rio Japurá, 1°50’56”S 69°01’43”W; P.M. Ito & R. Collins, 6 Sep 2014. INPA 49254 (5, females, 27.7–38.9 mm SL): stream trib. rio Japurá, 1°42’52”S 69°07’40”W; P.M. Ito & R. Collins, 8 Sep 2014. ZUEC 15388 (1, sex undetermined, 28.5 mm SL): Tefé, Igarapé Açu (trib. rio Solimões), Ramal do Emade, 3º25’23’’S, 64º37’6’’W; F.C. T. Lima, G.N. Salvador, N. Flausino Jr. & J.A. Oliveira, 26 Nov 2017. Peru, Loreto. UF 242746 (1, female, 35.9 mm SL): Iquitos, Quebrada San Pedro, road Iquitos/Nauta, 4º18’14’’S, 73º31’16’’W; W.G. R. Crampton, R.E. Reis, H. Ortega & F.C. T. Lima, 7 Jan 2004. MHNG 1576.059 (1, sex undetermined, 30.3 mm SL); MHNG 2180.078 (1, sex undetermined, 28.0 mm SL): Jenaro Herrera, Quebrada Copal; P. de Rham, 18 Oct 1977. MUSM 66974 (2, 1 female, 37.7 mm SL, 1 male, 30.9 mm SL): Jenaro Herrera, Quebrada Copal, km 15 at the road Jenaro-Herrera-Colonia Angamos, 4º56’22’’S, 73º30’25’’W; H. Ortega, W.G. R. Crampton, R.E. Reis & F.C. T. Lima, 10 Jan 2004. Colombia, Amazonas. ICNMHN 17244 (8, 1 sex undetermined, 28.4 mm SL, 7 males, 34.1–38.0 mm SL): Quebrada Jotabeyá, trib. Río Apapóris, 0º37’20’’S, 70º13’32’’W; F. Arbeláez, 27–30 March 2009. ICNMHN 5066 (167, 102 females, 32.7–43.0 mm SL, 65 males, 32.2–36.8 mm SL): Leticia, Río Puré, 2º7’5’’S, 69º37’50’’W; J.D. Lynch, Jan 2000. Not types: Brazil, Amazonas. MHNG 2180.074 (1, sex undetermined, 27.0 mm SL): rio Purus, Boca do Tapauá, 5º38’S, 63º12’W; H. R. Axelrod, H. Schultz & F. Terofal, Nov 1963. Brazil, Acre: MCP 37745 (7, 23.7–26.9 mm SL): Sena Madureira, igarapé Taquari (trib. rio Antimari, rio Acre basin), at road BR-364, 9º27’49’’S, 68º22’43’’W; R. E. Reis, P.A. Buckup, F. Langeani & F.C. T. Lima, 21 Jul 2004. MCP 37771 (10 of 27, 26.8–28.4 mm SL): Bujari, Igarapé Marizinho (trib. rio Antimari, rio Acre basin), at road BR-364, 9º36’41’’S, 68º14’40’’W; P.A. Buckup, J.F. Pezzi da Silva, P. Lehmann & V. A. Bertaco, 20 Jul 2004. MZUEL 6886 (2, 28.9–29.4 mm SL): Bujari, Igarapé Fumaça (trib. rio Antimari, rio Acre basin), at road BR-364, 9º34’23’’S, 68º16’50’’W; O.A. Shibatta & A. Claro-Garcia, 6 Oct 2010. Peru, Loreto. NRM 26870 (1, sex undetermined, 22.0 mm SL): quebrada Pintoyacu (Río Itaya drainage), at road Iquitos-Nauta; S.O. Kullander et al., 3 Jul 1986. NRM 26943 (1, sex undetermined, 25.4 mm SL); NRM 30579 (12, sex undetermined, 22.8–30.9 mm SL): Quebrada Tocón Grande, km 33 of Iquitos-Nauta road, c. 4º2’S, 73º26’W; S.O. Kullander et al., 4 Jul 1986. MHNG 2180.084 (1, 38.3 mm SL): “surroundings of Iquitos ”; H. R. Axelrod, 27 Dec 1963. MHNG 2225.01 (2, 23.4–27.3 mm SL): Jenaro Herrera, Quebrada Copal (trib. Río Ucayali), c. 4º56’S, 73º30’W; P. de Rham, 1 Sept 1981. NRM 15713 (2, sex undetermined, 22.3–24.1 mm SL): Jenaro Herrera, Quebrada Copal, km 15 at the road Jenaro-Herrera-Colonia Angamos, 4º56’22’’S, 73º30’25’’W; S.O. Kullander et al., 29 Aug 1983. MHNG 2180.089 (6, sex undetermined, 21.5–26.4 mm SL): Río Huytoyacu (trib. Río Paztaza) at Nuevo Progresso, c. 3º37’S, 76º25’W; C. Meyer, 20 Jul 1975. NRM 15714 (1, sex undetermined, 19.8 mm SL): Colonia Angamos, quebrada trib. Rio Galvez (trib. Rio Yavari), 20 min. upstream from Colonia Angamos, c. 5º10’40’’S, 72º53’30’’W; S.O. Kullander et al., 31 Jul 1984. NRM 26920 (26, sex undetermined, 15.0– 24.5 mm SL): Loreto, Colonia Angamos, quebrada trib. Rio Galvez (trib. Rio Yavari), 25 min. upstream from Colonia Angamos, c. 5º10’40’’S, 72º53’30’’W; S.O. Kullander et al., 31 Jul 1984. Colombia: MPUJ 13846 (1, male, 31.7 mm SL): Caquetá, Solano, caño Trocha, trib. Río Rutuya, rio Caquetá basin, 0º20’59’’N, 74º45’18’’W; J. Maldonado-Ocampo et al., 18 Apr 2018. ICNMHN 4271 (2, sex undetermined, 21.4–21.8 mm SL): Caquetá, Río Mesay, c. 0º4’27’’N, 72º27’5’’W; I. Bejarano & M.P. Blanco, July–Sept 2000. ICNMHN 13765 (4, 1 male, 31.4 mm SL, 3 females, 31.5–35.2 mm SL): Amazonas, creek 45 minutes above Puerto Nariño, c. 3º45’S, 70º25’W; H. Hanima, H. Boschung & R. Beckham, 3 Jan 1972. ICNMHN 18712 (1, male, 34.8 mm SL): Amazonas, Puerto Asis, Vereda La Rosa, Quebrada Cadenas (Río Putumayo basin), 0º26’16’’N, 76º17’10’’W; M. Murcía, 26 Jul 2014. ICNMHN 17233 (7, 24.0– 32.8 mm SL, largest specimen a mature male): Amazonas, Rio Apapóris, above Raudal Jiri-Jirimo, 0º2’35’’S, 70º56’53’’W; F. Arbeláez, 19–21 March 2009. CIACOL 3183 (26, sex undetermined, 24.4–38.4 mm SL): Amazonas, caño Hormiga, near village of Buenos Aires, c. 3º10’S, 69º59’W; A.A. Santos & E.C. Agudelo, 21 Feb 2018. Ecuador: FMNH 102587 (13, 13.5–34.7 mm SL): Napo, trib. Río Tarapuy (trib. Río Cuyabeno, Río Napo basin), c. 0º10’S, 75º57’W; D.J. Stewart et al., 2 Dec 1983 (picture only). Tentative identifications (see Remarks): All from Brazil, Rondônia. UFRO-I 4892 (2 of 5, 23.5–24.6 mm SL): Porto Velho, rio Madeira, Cachoeira de Teotônio, 8º51’32’’S, 64º3’46’’W; J.L.O. Birindelli et al., 24 Oct 2009. UFRO-I 9026 (5 of 12, 22.7–23.1 mm SL): Porto Velho, rio Madeira, at mouth of igarapé Jatuarana, 8º50’33’’S, 64º2’55’’W; E. Silva et al., 8 Sept 2009. Diagnosis. Hyphessobrycon bayleyi can be distinguished from all congeners, except from Hy. diancistrus and Hy. otrynus by presenting two symmetrical dark blotches at the distal portion of the caudal-fin lobes (vs. absence of two symmetrical dark blotches at the distal portion of the caudal-fin lobes in the remaining congeners). The new species can be distinguished from Hy. diancistrus and Hy. otrynus by the presence, in mature males, of typically a single large hook at last unbranched anal-fin ray (vs. presence in mature males typically of two large hooks, the first at last unbranched anal-fin ray, the second at first branched anal-fin ray). It can be additionally diagnosed from Hy. otrynus by presenting a patch of dark pigmentation on dorsal fin (vs. dorsal fin without any patch of dark pigmentation), and from Hyphessobrycon diancistrus by presenting a higher body depth (22.4–32.5 % SL, mean 28.4% SL, n = 63 vs. 19.0–26.8 % SL, mean 22.9 % SL, n = 76), and by a lower number of anal-fin branched rays (18–22, n = 63 vs. 12–16, n = 76). Hyphessobrycon bayleyi can be distinguished from two non-congeners which share the same color pattern, Hemigrammus durbinae and He. marginatus by presenting a patch of dark pigmentation on dorsal fin (vs. dorsal fin without any patch of dark pigmentation), by presenting anterior portion of anal fin with relatively broad dark stripe (vs. two parallel narrow stripes in He. durbinae, and a single narrow stripe in He. marginatus), and by the presence, in mature males, of a large hook at last unbranched anal-fin ray (vs. absence of hooks of any size in males of He. durbinae and He. marginatus). See the Discussion, for additional comparisons with these species. Description. Morphometric data summarized in Table 1. Body compressed, moderately slender; greatest body depth anterior to dorsal-fin origin. Dorsal profile of head slightly convex from tip of snout to anterior naris; straight to gently concave from latter point to tip of supraoccipital spine. Dorsal profile of body slightly convex from tip of supraoccipital spine to dorsal-fin origin; posteroventraly slanted and straight from latter point to adipose-fin origin and slightly concave along caudal peduncle. Ventral profile of body slightly convex from tip of dentary to anal-fin origin, posteroventraly slanted along anal-fin base. Ventral profile of caudal peduncle slightly concave. Mouth terminal; jaws equal, isognathous. Distal tip of maxillary extending slightly beyond vertical through anterior margin of eye. Premaxillary teeth in two rows, outer row composed by 1(1), 2*(36), or 3(26) tricuspid teeth, central cusp longer; inner row with 4(1) or 5*(62) bi- to pentacuspid teeth teeth, central cusp longer. Maxilla with 1(2) or 2(2) small, unicuspid teeth. Dentary with 9(1), 10(2), 11(1) teeth, anteriomost four teeth larger than remaining, tri- to pentacuspidate, remaining 5 – 7 teeth unicuspid. One specimen with second inner row of 4(1) unicuspid teeth, situated on inner margin of dentary, justaposed with outer unicuspid teeth (Fig. 3). Scales cycloid, with two to seven strongly marked radii, diverging from focus to posterior portion of scale; circuli well-marked anteriorly. Lateral line incomplete, slightly curved ventrally, with 7(1), 8(3), 9(12), 10*(17), 11(16), 12(8), 13(3), 14(2), or 15(1) pored scales; longitudinal series including perforated scales 29(1), 31(1), 32(1), 33(5), 34(8), 35(15), 36(22), 37*(6), 38(3), or 39(1). Scales rows between dorsal-fin origin and lateral line 5*(61) or 6(1). Scales rows between lateral line and pelvic-fin insertion 3*(61) or 4(1). Predorsal scales 10(7), 11*(40), or 12(16). Anal sheath along anal-fin base with 4 to 5 scales in a single row, covering base of first unbranched to fourth branched anal-fin rays. Circumpeduncular scales 12(9), 13*(36), or 14(18). Caudal-fin scales covering basis of upper and lower caudal-fin lobes margins, relatively large and few in number, concentrated over inner fin rays. Dorsal-fin rays ii,9*(63), first unbranched ray nearly one-third of second unbranched ray length; small ossification anterior to first unbranched ray present in four c&s specimens examined. Dorsal-fin origin at midbody or slightly behind this point. Insertion of first dorsal fin pterygiophore posterior to neural spine of 10 th (1) or 11 th (2) vertebrae. Adipose fin present. Pectoral-fin rays i,9 (5), 10(9), 11*(24), or 12(25). Pelvic-fin rays i,7*(63), its tip reaching anteriormost unbranched anal-fin rays. Anal-fin rays iv(2) – v(2), 18(4), 19(16), 20(25), 21*(14), or 22(2); last unbranched ray to fifth branched ray decreasing steeply in size, forming a distinctive anterior lobe; remaining rays decreasing very gradually decreasing in size to anal-fin terminus. Last anal-fin pterygiophore insertion behind hemal spine of 17th(4) vertebrae. Caudal fin forked, lobes slightly pointed, equal in size. Principal caudal-fin rays i,17,i (4); dorsal procurrent caudal-fin rays 10(1), 11(1), 12(1), or 13(1); ventral procurrent caudal-fin rays 9(2), 10(1), or 11(1). Vertebrae 36(4). Supraneurals 5(3) or 6(1). First gill arch with 2 (4) gill rakers on hypobranchial, 10 (4) on ceratobranchial, 1 (4) on cartilage between ceratobranchial and epibranchial, and 5 (1), 6(2) or 7(1) on epibranchial. Color in alcohol. Overall ground color light brown. Top of head, snout and tip of dentary dark gray as a result of dense concentration of dark chromatophores. Opercle and infraorbitals silvery in specimens retaining guanine. Predorsal midline dark gray, as a result of dense concentration of dark chromatophores covering entire surface of predorsal scales and upper margin of scales from scale row situated immediately below it. Post-dorsal midline with slightly less dense concentration of dark chromatophores, imparting a dark gray coloration. Lateral line slightly delineated by dark chromatophores. A moderately developed midlateral stripe, starting as a very narrow line slightly behind humeral region, broadening from vertical through dorsal-fin origin to caudal peduncle. Midlateral stripe at caudal peduncle fused with caudal peduncle blotch, with a roughly rhomboidal shape. Anal-fin basis with a conspicuous black stripe, broader at anterior portion of anal fin, from anal-fin origin to fourth to sixth branched anal-fin ray, becoming very narrow from that point to anal-fin terminus. Anal fin with dark chromatophores aligned in rows along posterior margin of fin rays. Dorsal fin with a dark patch of pigmentation situated at central portion of fin, between last unbranched and third branched fin rays. Remaining portions of dorsal fin hyaline or with scattered dark chromatophores. Pectoral, pelvic, and adipose fins hyaline. Caudal fin with two broad, symmetrical dark blotches situated on mid-region of upper and lower caudal-fin lobes, more intensely pigmented from outer fin ray to third or fourth branched rays. Small dark chromatophores scattered along caudal-fin margin, remaining caudal fin hyaline except for dark chromatophores at basis of middle c
- Published
- 2022
- Full Text
- View/download PDF
20. A new sexually dichromatic miniature Hyphessobrycon (Teleostei: Characiformes: Characidae) from the Rio Formiga, upper Rio Juruena basin, Mato Grosso, Brazil, with a review of sexual dichromatism in Characiformes.
- Author
-
Pastana, M. N. L., Dagosta, F. C. P., and Esguícero, A. L. H.
- Subjects
- *
HYPHESSOBRYCON , *SEXUAL dimorphism , *CHARACIFORMES , *CHROMATOPHORES , *FISHES - Abstract
Hyphessobrycon myrmex sp. nov., is described from the Rio Formiga, upper Rio Juruena, upper Rio Tapajós basin, Mato Grosso, Brazil. The new species can be distinguished from congeners by having the lower half of the body deeply pigmented with dark chromatophores, chromatophores concentrated above the anal fin and forming a broad, diffuse, dark midlateral stripe and by having a dense concentration of dark chromatophores along unbranched dorsal-fin rays and distal portions of the two or three subsequent branched rays. In life, H. myrmex exhibits a conspicuous sexual dichromatism, with adult males red to orange and females and immatures pale yellow. A list containing 108 sexually dichromatic taxa in six families of Characiformes is provided and the distribution of this poorly known type of dimorphism across the Characiformes is discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
21. New species of Hyphessobrycon from the Rio Teles Pires, Rio Tapajós basin, Brazil (Ostariophysi, Characiformes).
- Author
-
Carvalho, F. R., Cabeceira, F. G., and Carvalho, L. N.
- Subjects
- *
HYPHESSOBRYCON , *CYPRINIFORMES , *FINS (Anatomy) , *CHROMATOPHORES , *ECOLOGICAL regions - Abstract
A new species of Hyphessobrycon from the upper Rio Tapajós basin, in the Tapajós-Juruena ecoregion, is described. Hyphessobrycon pinnistriatus n. sp. is distinguished from its congeners by having a black, oblique stripe extending from the origin of the second branched ray to the distal end of the third branched anal-fin ray, lacking a conspicuous black midlateral stripe on the body, inner premaxillary teeth with up to seven cusps, and fins normally hyaline or with scattered chromatophores. The description of a new species that is restricted to the Tapajós-Juruena ecoregion is consistent with this region being an area of high endemism of freshwater fishes. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
22. The efficacy of clove oil as an anaesthetic and in euthanasia procedure for small-sized tropical fishes.
- Author
-
Fernandes, I. M., Bastos, Y. F., Barreto, D. S., Lourenço, L. S., and Penha, J. M.
- Subjects
CLOVE (Spice) ,EUTHANASIA ,HYPHESSOBRYCON ,HEMIGRAMMUS ,FISH habitats - Abstract
Copyright of Brazilian Journal of Biology is the property of Instituto Internacional de Ecologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2017
- Full Text
- View/download PDF
23. A new species of Hyphessobrycon (Characiformes, Characidae) from the upper Guaviare River, Orinoco River Basin, Colombia.
- Author
-
García-Alzate, Carlos A., Urbano-Bonilla, Alexander, and Taphorn, Donald C.
- Subjects
- *
HYPHESSOBRYCON , *CHARACIFORMES , *DRAINAGE , *CEREBELLAR peduncles , *ICHTHYOLOGY - Abstract
Hyphessobrycon klausanni sp. n. is described from small drainages of the upper Guaviare River (Orinoco River Basin) in Colombia. It differs from all congeners by having a wide, conspicuous, dark lateral stripe extending from the anterior margin of the eye across the body and continued through the middle caudal-fin rays, and that covers (vertically) three or four horizontal scale rows. It also differs by having an orange-yellow stripe extending from the anterosuperior margin of the eye to the caudal peduncle above the lateral line in life. It differs from all other species of Hyphessobrycon that have a similar dark lateral stripe: H. cyanotaenia, H. loretoensis, H. melanostichos, H. nigricinctus, H. herbertaxelrodi, H. eschwartzae, H. montogoi, H. psittacus, H. metae, H. margitae, H. vanzolinii, and H. peruvianus in having only three or four pored scales in the lateral line, 21 to 24 lateral scales and six teeth in the inner premaxillary row. Hyphessobrycon klausanni differs from H. loretoensis in having seven to eight maxillary teeth (vs. three to four) and in having a longer caudal peduncle (12.4-17.0% SL vs. 4.6-8.0% SL). Additionally Hyphessobrycon klausanni can be distinguished from the other species of Hyphessobrycon with a dark lateral stripe from the Orinoco River Basin (H. metae and H. acaciae) in having two teeth in the outer premaxillary row (vs. three to four) and 10 branched pectoral-fin rays (vs. 11 to 12). It further differs from H. metae by the length of the snout (17.6-22.8% HL vs. 9.9-15.2% HL) and by the length of the caudal peduncle (12.4-17.0% SL vs. 7.3-11.8% SL). [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
24. Effects of species co-occurrence on the trophic-niche breadth of characids in Amazon forest streams.
- Author
-
Barros, G., Zuanon, J., and Deus, C.
- Subjects
- *
FISH diversity , *FISH habitats , *CLASSIFICATION of fish , *FISH feeds , *SEASONAL physiological variations , *FISHES - Abstract
This study assessed the width of the trophic niche of four characid species ( Bryconops giacopinii, Bryconops inpai, Hyphessobrycon aff. melazonatus and Iguanodectes geisleri) found under different co-occurrence circumstances in Amazonian upland streams. The study was conducted during the rainy season of 2011 at eight sites of two micro-basins of the Ducke Reserve, Manaus, Amazonas, Brazil. The four species were studied in the following circumstances: only one of the species occurring in the stream; two species co-occurring; three species co-occurring. The relative volume of the food items in the fish stomachs was used to calculate Hurlbert's trophic-niche breadth for the individuals of each species in the different co-occurrence circumstances. Hyphessobrycon aff. melazonatus changed their diet when occurring in syntopy with other characid species of similar feeding habits, as shown by a significant narrowing of its trophic niche. The opportunistic habits and great feeding flexibility of these characid species make the partitioning of food resources possible and act as an important ecological mechanism that facilitates the coexistence of different species, possibly by attenuating the effects of direct competition for food. In addition, the low carrying capacity of these upland forest streams may be an important environmental factor influencing the results of this study. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
25. Hyphessobrycon tortuguerae Bohlke 1958
- Author
-
Angulo, Arturo
- Subjects
Actinopterygii ,Characidae ,Animalia ,Hyphessobrycon tortuguerae ,Biodiversity ,Characiformes ,Hyphessobrycon ,Chordata ,Taxonomy - Abstract
Hyphessobrycon tortuguerae B��hlke, 1958. Tortuguero Tetra; Sardina, Sardinita, Tetra, Tetra de Tortuguero, Sardinita de Tortuguero. Distribution: Global: Middle America; from central and eastern Honduras to northern Costa Rica,Atlantic drainages; Costa Rica: LN, RF, SJ, SC, Sa and To (Atlantic), 0���50 m.a.s.l., Pri, Pot. Occurrence and conservation status: Nat, LC. References: Bussing (1987: 88; 1998: 110; brief description, including illustrations and an identification key, information on distribution, with a map, and ecology) and Angulo et al. (2013: 992; listed, including taxonomic information and distributional data)., Published as part of Angulo, Arturo, 2021, New records and range extensions to the Costa Rican freshwater fish fauna, with an updated checklist, pp. 1-72 in Zootaxa 5083 (1) on page 27, DOI: 10.11646/zootaxa.5083.1.1, http://zenodo.org/record/5800630
- Published
- 2021
- Full Text
- View/download PDF
26. Hyphessobrycon savagei Bussing 1966
- Author
-
Angulo, Arturo
- Subjects
Hyphessobrycon savagei ,Actinopterygii ,Characidae ,Animalia ,Biodiversity ,Characiformes ,Hyphessobrycon ,Chordata ,Taxonomy - Abstract
Hyphessobrycon savagei Bussing, 1966. Savage���s Tetra; Sardina, Sardinita, Tetra, Tetra de Savage, Sardinita de Savage. Distribution: Global: Middle America; southwestern and southern Costa Rica, Pacific drainages; Costa Rica: Pi and Tr (Pacific), 0��� 70 m.a.s.l., Pri, Pot. Occurrence and conservation status: End, VU. References: Bussing (1966: 215; detailed description and information on distribution), Bussing (1967: 215; detailed description, including an illustration, and information on distribution and ecology; 1987: 87; 1998: 108; brief description, including illustrations and an identification key, information on distribution, with a map, and ecology) and Angulo et al. (2013: 992; listed, including taxonomic information and distributional data)., Published as part of Angulo, Arturo, 2021, New records and range extensions to the Costa Rican freshwater fish fauna, with an updated checklist, pp. 1-72 in Zootaxa 5083 (1) on page 27, DOI: 10.11646/zootaxa.5083.1.1, http://zenodo.org/record/5800630, {"references":["Bussing, W. A. (1967) New species and new records of Costa Rican freshwater fishes with a tentative list of species. Revista de Biologia Tropical, 14, 205 - 249."]}
- Published
- 2021
- Full Text
- View/download PDF
27. Hyphessobrycon bussingi Ota, Carvalho & Pavanelli 2020
- Author
-
Angulo, Arturo
- Subjects
Actinopterygii ,Characidae ,Hyphessobrycon bussingi ,Animalia ,Biodiversity ,Characiformes ,Hyphessobrycon ,Chordata ,Taxonomy - Abstract
Hyphessobrycon bussingi Ota, Carvalho & Pavanelli, 2020. Bussing���s Tetra; Sardina, Sardinita, Tetra, Tetra de Bussing, Sardinita de Bussing. Distribution: Global: Middle America; from eastern Costa Rica to western Panama, Atlantic drainages; Costa Rica: Si (Atlantic), 40��� 60 m.a.s.l., Pri, Pot. Occurrence and conservation status: Nat, EN. References: Bussing (1987: 85; 1998: 105, as Hyphessobrycon panamensis Durbin 1908, in part���missidentification; brief description, including illustrations and an identification key, information on distribution, with a map, and ecology), Angulo et al. (2013: 992, as H. panamensis ���missidentification; listed, including taxonomic information and distributional data) and Ota (2018: 82; 2020: 403, as Hyphessobrycon sp.; detailed description, including illustrations and an identification key, information on distribution, with a map, and ecology)., Published as part of Angulo, Arturo, 2021, New records and range extensions to the Costa Rican freshwater fish fauna, with an updated checklist, pp. 1-72 in Zootaxa 5083 (1) on page 27, DOI: 10.11646/zootaxa.5083.1.1, http://zenodo.org/record/5800630, {"references":["Ota, R. R., Carvalho, F. R. & Pavanelli, C. S. (2020) Taxonomic review of the Hyphessobrycon panamensis species-group (Characiformes: Characidae). Zootaxa, 4751 (3), 401 - 436. https: // doi. org / 10.11646 / zootaxa. 4751.3.1","Ota, R. R. (2018) Revisao taxonomica do grupo Hyphessobrycon panamensis Durbin (Characiformes: Characidae). Universidade Estadual de Maringa, Brasil, 184 pp."]}
- Published
- 2021
- Full Text
- View/download PDF
28. Weighted parsimony phylogeny of the family Characidae (Teleostei: Characiformes)
- Author
-
J. Marcos Mirande
- Subjects
Synapomorphy ,biology ,Otras Ciencias Biológicas ,Hyphessobrycon ,Zoology ,SELF-WEIGHTED OPTIMIZATION ,Characiformes ,SYSTEMATICS ,biology.organism_classification ,Incertae sedis ,Serrasalmidae ,Characidae ,Ciencias Biológicas ,Monophyly ,Cynodontidae ,OSTARIOPHYSI ,IMPLIED WEIGHTING ,Ecology, Evolution, Behavior and Systematics ,CIENCIAS NATURALES Y EXACTAS - Abstract
The family Characidae, including more than 1000 species, lacks a phylogenetic diagnosis, with many of its genera currently considered as incertae sedis. The aims of the present study are to propose a phylogenetic diagnosis and to assess higher-level relationships of and within Characidae. In this regard, 360 morphological characters are studied for 160 species of Characidae and related families. Phylogenetic analyses under implied weighting and self-weighted optimization are presented, exploring a broad range of parameters. The analysis under self-weighted optimization is innovative for this size of matrices. Familial status of Serrasalmidae is supported, and Acestrorhynchidae and Cynodontidae are included in a monophyletic Characidae. Engraulisoma taeniatum is transferred from Characidae to Gasteropelecidae. Thus constituted, the monophyly of Characidae is supported by seven synapomorphies. A new subfamily, Heterocharacinae, is proposed, and the subfamilies Aphyocharacinae, Aphyoditeinae, Characinae, Gymnocharacinae, and Stevardiinae are redefined. The Glandulocaudinae are included in Stevardiinae together with remaining members of ‘‘clade A’’ (sensu Malabarba and Weitzman, 2003. Comun. Mus. Ciênc. Tecnol. PUCRS, Sér. Zool. 16, 67–151.) and the genera Aulixidens and Nantis. Most incertae sedis genera are assigned, at least tentatively, to a phylogenetically diagnosed clade. Fil: Mirande, Juan Marcos. Fundación Miguel Lillo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
- Published
- 2021
29. Food resource used by small-sized fish in macrophyte patches in ponds of the upper Paraná river floodplain = Uso do alimento por peixes de pequeno porte associados às macrófitas aquáticas em lagoas da planície de inundação do alto rio Paraná
- Author
-
Valdirene Esgarbosa Loureiro Crippa, Norma Segatti Hahn, and Rosemara Fugi
- Subjects
Astyanax ,Bryconamericus ,Hemigrammus ,Hyphessobrycon ,Moenkhausia ,diet ,dieta ,Biology (General) ,QH301-705.5 ,Microbiology ,QR1-502 - Abstract
This study analyzed the diet of seven small-sized fish species(Characidae) and assessed their use of food resources. The species were collected in 2001 from nine ponds with aquatic macrophytes in the Paraná river floodplain, Brazil. Astyanax altiparanae, Astyanax fasciatus, Hemigrammus marginatus and Moenkhausia intermedia consumed aquatic and terrestrial insects. Bryconomericus stramineus andMoenkhausia sanctaefilomenae co-dominantly ate insects and microcrustaceans, whereas Hyphessobrycon eques had microcrustaceans as their most important food resource. Overlapping feeding coefficients varied from intermediate (0.4-0.6) to low (< 0.4) forthe majority of the combination pairs. A high mean intestinal length was verified for A. altiparanae and A. fasciatus, while a smaller mean was found for H. eques. When comparing all these results, it is possible to conclude that the species were partially segregated by the trophic niche dimension. Thus, the co-existence and higherabundance of these small fish in the shoreline of the ponds is explained by high feeding adaptability, absence of specializations in the feeding tract (except intestinal length) and the wide food supply provided by aquatic macrophytes.Uso do alimento por peixes de pequeno porte associados a macrófitas aquáticas em lagoas da planície de inundação do alto rio Paraná. Nesse estudo foi investigada a dieta de sete espécies de peixesde pequeno porte (Characidae), em nove lagoas providas de macrófitas aquáticas, da planície aluvial do alto rio Paraná, Brasil, no ano de 2001. Astyanax altiparanae, Astyanax fasciatus, Hemigrammus marginatus e Moenkhausia intermedia consumiram insetos aquáticos e terrestres; para Bryconomericus stramineus e Moenkhausia sanctaefilomenae houve co-dominância de insetos aquáticos e microcrustáceos na dieta, enquanto que Hyphessobrycon eques exploroupredominantemente microcrustáceos. Os valores de sobreposição alimentar variaram de intermediário (0,4-0,6) a baixos (< 0,4) para a maioria dos pares de espécies. Com relação ao comprimento do intestino constatou-se a maior média ajustada para A. altiparanae eA. fasciatus e a menor para H. eques. Todos esses resultados analisados conjuntamente permitem inferir que a dimensão de nicho trófico segregou parcialmente essas espécies. E ainda que, a co-existência e elevada abundância desses pequenos peixes nas regiõesmarginais das lagoas é proporcionada pela alta adaptabilidade trófica, pela ausência de especializações no trato digestivo (exceto para o comprimento do intestino) e pelo amplo suprimento alimentar fornecido pelas macrófitas aquáticas.
- Published
- 2009
30. Diets supplemented with microalgal biomass: effects on growth, survival and colouration of ornamental fish Hyphessobrycon eques (Steindacher 1882).
- Author
-
Berchielli‐Morais, Flavia Almeida, Fernandes, João Batista Kochenborger, and Sipaúba‐Tavares, Lúcia Helena
- Subjects
- *
MICROALGAE , *ZOOPLANKTON , *HYPHESSOBRYCON , *FISH growth , *ANKISTRODESMUS , *ORNAMENTAL fishes , *CLADOCERA , *FISH feeds - Abstract
This study evaluated the effects of the addition of microalgae ( Ankistrodesmus gracilis and Haematococcus pluvialis) to the fish diet in improving the growth and optimal pigmentation (red carotenoid) of Hyphessobrycon eques. The basal mixed diets consisted of a formulated diet, supplemented with dried microalgae biomass of A. gracilis (1.5 g kg−1) and H. pluvialis (1.5 g kg−1). The live food diets contained zooplankton was cultured in open ponds, associated with microalgae. All the microalgae were cultured in the laboratory. No mortality was observed with any experimental diets. Fish performance results showed significant differences ( P < 0.05) between the basal diet ( BD) and the live food diet. The higher weight and total length were observed with mixed diets ( BD + H. pluvialis and BD + A. gracilis). The mixed diets promoted more intense values of chroma (Cab*), lightness (L*) and redness (a*) to H. eques. Diaphanosoma birgei (Cladocera) represented more than 32% of zooplankton ingested by ornamental fish in live food (zooplankton and zooplankton + microalgae), and Argyrodiaptomus furcatus (Copepoda) was the species most ingested by H. eques in live food dietary treatment zooplankton. The feeding behaviour observed in the laboratory as well as the food preferences of H. eques was dependent on the zooplankton composition present in the used open ponds. This study showed that diets with microalgae and zooplankton were able to enhance the pigmentation of H. eques, being a good tool to benefit the culture management of this species. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
31. Pathological and histometric analysis of the gills of female Hyphessobrycon eques (Teleostei:Characidae) exposed to different concentrations of the insecticide Dimilin®.
- Author
-
Marcon, Lucas, Lopes, Diego Senra, Mounteer, Ann Honor, Goulart, Amara Manarino Andrade, Leandro, Mila Vasques, and dos Anjos Benjamin, Laércio
- Subjects
PATHOLOGICAL physiology ,GILLS ,HYPHESSOBRYCON ,INSECTICIDES ,DIFLUBENZURON ,ANATOMY - Abstract
Female individuals of Hyphessobrycon eques were exposed to Diflubenzuron (Dimilin ® ) in order to determine whether exposure to sublethal levels of this insecticide causes changes in gill morphology. Fish were exposed to 0.01, 0.1 and 1.0 mg L −1 for 96 h and 17 days and then submitted to pathological and histometric evaluation. Pathological lesions, such as hyperplasia, lamellar fusion, vascular congestion, secondary lamellar disarray, vasodilatation, hemorrhage and increased lamellar epithelium, were significantly more common in the gills of fish exposed to Dimilin ® than the control. Histometric analysis documented significant changes in blood vessel diameter, primary lamellae width and secondary lamellae length, and the appearance of hemorrhage foci in all concentrations tested. Even at low Dimilin ® concentrations, the histopathological alteration index was mild to moderate, thereby indicating that the function of this tissue was compromised. These findings indicate that indiscriminate use of Dimilin ® can adversely affect the structural integrity of the gills of H. eques , which can cause numerous problems for fish farming systems. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
32. Hyphessobrycon margitae spec. nov. - ein neuer Salmler aus dem Einzugsgebiet des río Nanay in Peru (Teleostei: Characiformes: Characidae).
- Author
-
ZARSKE, AXEL
- Abstract
Copyright of Vertebrate Zoology is the property of Senckenberg Gesellschaft fur Naturforschung and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2016
- Full Text
- View/download PDF
33. A name for the 'blueberry tetra', an aquarium trade popular species of Hyphessobrycon Durbin (Characiformes, Characidae), with comments on fish species descriptions lacking accurate type locality.
- Author
-
Marinho, M. M. F., Dagosta, F. C. P., Camelier, P., and Oyakawa, O. T.
- Subjects
- *
HYPHESSOBRYCON , *FRESHWATER fishes , *FISH habitats , *FISH ecology - Abstract
A new species of Hyphessobrycon is described from a tributary of the upper Rio Tapajós, Amazon basin, Mato Grosso, Brazil. Its exuberant colour in life, with blue to purple body and red fins, is appreciated in the aquarium trade. Characters to diagnose the new species from all congeners are the presence of a single humeral blotch, absence of a distinct caudal-peduncle blotch, absence of a well-defined dark mid-lateral stripe on body, the presence of 16-18 branched anal-fin rays, nine branched dorsal-fin rays and six branched pelvic-fin rays. A brief comment on fish species descriptions solely based on aquarium material and its consequence for conservation policies is provided. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
34. Two new species of Hyphessobrycon (Characiformes: Characidae) from the headwaters of the Tapajós and Xingu River basins, Pará, Brazil.
- Author
-
Teixeira, T. F., Netto‐Ferreira, A. L., Birindelli, J. L. O., and Sousa, L. M.
- Subjects
- *
HYPHESSOBRYCON , *CHARACIFORMES , *CHARACIDAE , *GEOGRAPHICAL distribution of fishes , *FINS (Anatomy) , *BONING of fish , *FISH ecology - Abstract
Two new species of Hyphessobrycon are described from the headwaters of the Tapajós and Xingu River basins, Pará, Brazil. Both new species can be distinguished from congeners by the presence of a vertically elongate humeral blotch, a conspicuous round to vertically oblong caudal-peduncle blotch not extending onto the distal portions of the middle caudal-fin rays, a conspicuous blotch on the central portion of the third infraorbital immediately ventral to the eye, the lack of a conspicuous longitudinal stripe and the lack of sexual dimorphism in the extension of the caudal-peduncle blotch. Hyphessobrycon delimai n. sp. can be distinguished from Hyphessobrycon krenakore n. sp. by the extent of the caudal-peduncle blotch which extends across most of the caudal-peduncle depth ( v. restricted to the middle portion of the caudal peduncle), the presence of dark chromatophores uniformly scattered along the length of the interradial membranes of the dorsal, anal and caudal fins ( v. concentrated on the distal one-half or one-fourth of the interradial membranes) and the absence of small bony processes on the pelvic and anal fins of mature males ( v. small bony processes present). [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
35. Chronic Effects of Intermittent Sound Disturbance on Buenos Aires Tetra.
- Author
-
Arnt, Jeremy L. and Neisler, Erica
- Subjects
- *
HYPHESSOBRYCON , *EFFECT of sound on fishes , *FISH growth , *FISH behavior , *BODY composition of fish - Abstract
The hearing-specialist Buenos Aires tetra (Hyphessobrycon anisitsi) was subjected to two, independent, five-week trials to determine the differences between growth and behavior in intermittently disturbed and quiet habitats. One group was subjected to intermittent acoustic disturbance (135±3 dB rel: V/μPa) twice per day for one hour. The other was subjected to ambient sound disturbance (85±3 dB rel: V/μPa). Growth in length, weight, and Fulton's condition factor were compared between groups using repeated-measures ANOVA. Frequency of observation for five categories of behavior was compared using one-tail Student's t tests. Linear regression was used to examine evidence for habituation or sensitization. We found no difference in growth between trials; however, strong differences between three of the five behaviors (nipping, darting, and normal swimming) were observed, showing sensitization (i.e., increased display of stress behaviors) over one-hour periods of disturbance exposure. Sensitization to the onset of disturbance was evident from increased darting over the course of the five-week trials. Subjects showed decreased behavioral responses to the initial stimulus in darting and normal swimming behaviors. These results suggest H. anisitsi is not sufficiently stressed by chronic disturbance to alter growth over a five-week period, but sound does induce behavioral changes on this timescale. [ABSTRACT FROM AUTHOR]
- Published
- 2016
36. Length‐weight relationships for five freshwater fish species from the Utinga State Park, Northeast Amazon, Brazil.
- Author
-
Andrade, M. C., Rodrigues, E. L. C., Silva, L. C. G., Silva, A. F. F., Trindade, P. A. A., Giarrizzo, T., and Nunes, J. L. G.
- Subjects
- *
FISH growth , *FISHES , *CURIMATA , *GASTEROPELECUS , *HEMIGRAMMUS , *HYPHESSOBRYCON , *FRESHWATER fishes , *TYPE specimens (Natural history) - Abstract
Summary: Length–weight relationships (LWR) were estimated for five most abundant fish species occurring in the Utinga State Park within the metropolitan area of Belém, State of Pará, Northern Brazil. Data were obtained from specimens of
Curimata knerii (n = 75),Gasteropelecus levis (n = 54),Hemigrammus rodwayi (n = 82),Hyphessobrycon bentosi (n = 69), andPristobrycon calmoni (n = 76) collected in July 2013 with seines (1.5 mm mesh), sieves (1 mm mesh), and gill nets (40–120 mm mesh) in the main waterbodies. All LWRs are novel for science, increasing knowledge on biological information of the Neotropical freshwater fish. [ABSTRACT FROM AUTHOR]- Published
- 2018
- Full Text
- View/download PDF
37. Characterization of the complete mitochondrial genome of Hyphessobrycon herbertaxelrodi (Characiformes, Characidae) and phylogenetic studies of Characiformes
- Author
-
Hongling Ping, Zengliang Miao, Xiaolong Yin, Jian Chen, Pengxiang Yuan, Pinglin Cao, Yuanpei Gao, Hua Zhang, Bingjian Liu, and Kun Zhang
- Subjects
0106 biological sciences ,0301 basic medicine ,Genetics ,Most recent common ancestor ,Mitochondrial DNA ,biology ,Phylogenetic tree ,phylogenetic analysis ,Hyphessobrycon ,Characiformes ,Ribosomal RNA ,biology.organism_classification ,010603 evolutionary biology ,01 natural sciences ,Characidae ,03 medical and health sciences ,030104 developmental biology ,mitochondrial genome ,Hyphessobrycon herbertaxelrodi ,Molecular Biology ,Gene ,Mitogenome Announcement ,Research Article - Abstract
In this study, the complete mitochondrial genome of Hyphessobrycon herbertaxelrodi is presented, and we also discussed its mitochondrial characteristics. The full length of the mitochondrial genome was 17,417 bp, including 13 protein coding genes (PCGs), 2 ribosomal RNAs (12S and 16S), 22 transfer RNA genes, 1 non-coding control region (D-loop), and 1 origin of replication on the light-strand. The total nucleotide composition of mitochondrial DNA was 29.76%A, 29.88%T, 25.35%C, 15.01%G, and AT was 59.64%. The phylogenetic tree suggested that H. herbertaxelrodi shared the most recent common ancestor with Astyanax giton, Grundulus bogotensis, Astyanax paranae, and Oligosarcus argenteus.
- Published
- 2020
38. A new species ofHyphessobrycon(Characiformes, Characidae) from the upper Rio Jequitinhonha basin, Minas Gerais, Brazil, with comments on morphological similarities with Stethaprioninae species from headwater environments
- Author
-
Guilherme Moreira Dutra, Sérgio Alexandre dos Santos, Tiago Casarim Pessali, Tulio F. Teixeira, and Iago De Souza Penido
- Subjects
Male ,0106 biological sciences ,biology ,Characidae ,Ecology ,010604 marine biology & hydrobiology ,Hyphessobrycon ,Aquatic Science ,Structural basin ,Characiformes ,Classification ,biology.organism_classification ,010603 evolutionary biology ,01 natural sciences ,Astyanax scabripinnis ,Rivers ,Premaxillary bone ,Hasemania ,Animals ,Taxonomy (biology) ,Brazil ,Ecology, Evolution, Behavior and Systematics - Abstract
A new species of Hyphessobrycon is described from a marshland area in the headwaters of Rio Jequitinhonha basin, Minas Gerais, Brazil. The new species differs from congeners by presenting a single well-delimited conspicuous humeral blotch, rounded to vertically oval, restricted to the area dorsal to the lateral-line row of scales, without a narrower downward extension, greatest body depth anterior to dorsal-fin origin, bony processes in anal and pectoral-fin rays of males and four teeth in the inner row of the premaxillary bone. The new species presents a set of morphological features shared by some species currently assigned to Hasemania, Myxiops and to the Astyanax scabripinnis complex. Some of these features are discussed.
- Published
- 2019
39. Hyphessobrycon bifasciatus Ellis 1911
- Author
-
Smith, Welber Senteio, Halcsik, Leticia, Biagioni, Renata Cassemiro, Pinheiro, Lúcio Antônio Stefani, and Severino Stefani, Marta
- Subjects
Actinopterygii ,Characidae ,Animalia ,Biodiversity ,Characiformes ,Hyphessobrycon ,Chordata ,Hyphessobrycon bifasciatus ,Taxonomy - Abstract
Hyphessobrycon bifasciatus Ellis, 1911 Material examined. BRAZIL – São Paulo • Iperó, Ipanema River; 23°22.40′S, 049°38.51′W; 560 m alt.; 12.II.2012; W.S. Smith and L. Halcsik leg.; hand nets; LEEF 115133, LEEF 115138, LEEF 115162 (12 spec., 22.0−33.0 mm SL). Identification. Bare caudal fin with scales presents only at the base; Body with two humeral macules and small black spots lying at the height of the lateral line (Yoshida et al. 2016)., Published as part of Smith, Welber Senteio, Halcsik, Leticia, Biagioni, Renata Cassemiro, Pinheiro, Lúcio Antônio Stefani & Severino Stefani, Marta, 2021, An updated list of the ichthyofauna of Ipanema National Forest, São Paulo, Brazil, pp. 827-840 in Check List 17 (3) on page 833, DOI: 10.15560/17.3.827
- Published
- 2021
- Full Text
- View/download PDF
40. Ionoregulatory Aspects of the Osmorespiratory Compromise during Acute Environmental Hypoxia in 12 Tropical and Temperate Teleosts.
- Author
-
Robertson, Lisa M., Val, Adalberto Luis, Almeida-Val, Vera F., and Wood, Chris M.
- Subjects
- *
HYPOXEMIA , *RAINBOW trout , *FISH physiology , *OSTEICHTHYES , *HYPHESSOBRYCON , *BLUEGILL , *ZEBRA danio , *PHYSIOLOGY , *FISHES - Abstract
In the traditional osmorespiratory compromise, as seen in the hypoxia-intolerant freshwater rainbow trout (Oncorhynchus mykiss), the branchial modifications that occur to improve O2 uptake during hypoxia result in unfavorable increases in the fluxes of ions and water.However, at least one hypoxia-tolerant freshwater species, the Amazonian oscar (Astronotus ocellatus), shows exactly the opposite: decreased branchial flux rates of ions, water, and nitrogenous wastes during acute hypoxia. In order to find out whether the two strategies were widespread, we used a standard 2-h normoxia, 2-h hypoxia (20%-30% saturation), 2-h normoxic recovery protocol to survey 10 other phylogenetically diverse tropical and temperate species. Unidirectional influx and efflux rates of Na+ and net flux rates of K+, ammonia, and urea-N weremeasured. The flux reduction strategy was seen only in one additional species, the Amazonian tambaqui (Colossoma macropomum), which is similarly hypoxia tolerant and lives in the same ion-poor waters as the oscar. However, five other species exhibited evidence of the increased flux rates typical of the traditional osmorespiratory compromise in the trout: the rosaceu tetra (Hyphessobrycon bentosi rosaceus), the moenkhausia tetra (Moenkhausia diktyota), the bluegill sunfish (Lepomis macrochirus), the zebra fish (Danio rerio), and the goldfish (Carassius auratus). Four other species exhibited no marked flux changes during hypoxia: the cardinal tetra (Paracheirodon axelrodi), the hemigrammus tetra (Hemigrammus rhodostomus), the pumpkinseed sunfish (Lepomis gibbosus), and the Atlantic killifish (Fundulus heteroclitus). Overall, a diversity of strategies exist; we speculate that these may be linked to differences in habitat and/or lifestyle. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
41. HYPHESSOBRYCON NATAGAIMA (CHARACIFORMES: CHARACIDAE) A NEW SPECIES FROM COLOMBIA, WITH A KEY TO THE MAGDALENA BASIN HYPHESSOBRYCON SPECIES.
- Author
-
GARCÍA-ALZATE, CARLOS A., TAPHORN, DONALD C., ROMAN-VALENCIA, CESAR, and VILLA-NAVARRO, FRANCISCO A.
- Subjects
HYPHESSOBRYCON ,FISH anatomy ,CLASSIFICATION of fish ,FINS (Anatomy) ,FISH diversity - Abstract
Copyright of Caldasia is the property of Universidad Nacional de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2015
- Full Text
- View/download PDF
42. A new Hyphessobrycon (Characiformes: Characidae) of the Hyphessobrycon heterorhabdus species-group from the lower Amazon basin, Brazil
- Author
-
Claudio Oliveira, Luís Reginaldo Ribeiro Rodrigues, Karen Larissa Auzier Guimarães, Tiago C. Faria, Flávio C. T. Lima, Universidade Estadual de Campinas (UNICAMP), Universidade Federal do Oeste do Pará, and Universidade Estadual Paulista (Unesp)
- Subjects
0106 biological sciences ,Peduncle (anatomy) ,010607 zoology ,Zoology ,Hyphessobrycon ,Aquatic Science ,Characiformes ,010603 evolutionary biology ,01 natural sciences ,Species group ,Rio Amazonas ,Espécie Críptica ,Ecology, Evolution, Behavior and Systematics ,Cryptic Species ,Hyphessobrycon heterorhabdus ,biology ,Biodiversidade ,Rio Tapajós ,Biodiversity ,biology.organism_classification ,DNA Barcoding ,Characidae ,QL1-991 ,Genetic distance ,Animal Science and Zoology ,Amazon basin - Abstract
A new species of Hyphessobrycon belonging to the Hyphessobrycon heterorhabdus species-group from the lower rio Tapajós, state of Pará, Brazil, is described. The new species is allocated into the Hyphessobrycon heterorhabdus species-group due to its color pattern, composed by an anteriorly well-defined, horizontally elongated humeral blotch that becomes diffuse and blurred posteriorly, where it overlaps with a conspicuous midlateral dark stripe that becomes blurred towards the caudal peduncle and the presence, in living specimens, of a tricolored longitudinal pattern composed by a dorsal red or reddish longitudinal stripe, a middle iridescent, golden or silvery longitudinal stripe, and a more ventrally-lying longitudinal dark pattern composed by the humeral blotch and dark midlateral stripe. It can be distinguished from all other species of the group by possessing humeral blotch with a straight or slightly rounded ventral profile, lacking a ventral expansion present in all other species of the group. The new species is also distinguished from Hyphessobrycon heterorhabdus by a 9.6% genetic distance in the cytochrome c oxidase I gene. The little morphological distinction of the new species when compared with its most similar congener, H. heterorhabdus, indicates that the new species is one of the first truly cryptic fish species described from the Amazon basin. RESUMO Uma nova espécie de Hyphessobrycon pertencente ao grupo Hyphessobrycon heterorhabdus é descrita da região do baixo rio Tapajós, estado do Pará, Brasil. A nova espécie é incluída no grupo Hyphessobrycon heterorhabdus devido ao seu padrão de coloração, composto por uma mancha umeral alongada, anteriormente bem definida, que se torna difusa e borrada posteriormente, onde se sobrepõe a uma conspícua faixa escura médio-lateral que se torna borrada próxima ao pedúnculo caudal, e pela presença, em exemplares vivos, de um padrão longitudinal tricolor, composto por uma faixa longitudinal vermelha ou avermelhada dorsal, uma faixa média iridescente dourada ou prateada e, mais ventralmente, o padrão longitudinal escuro composto pela faixa escura médio-lateral e mancha umeral. A espécie pode ser distinguida das outras espécies pertencentes ao grupo por possuir uma mancha umeral com região ventral retilínea ou levemente arredondada, sem uma expansão ventral presente nas demais espécies do grupo. A espécie também se diferencia de Hyphessobrycon heterorhabdus por uma distância genética de 9,6% no gene citocromo c oxidase I. A sutil diferença morfológica da nova espécie quando comparada ao seu congênere mais similar, H. heterorhabdus, indica que a nova espécie é uma das primeiras espécies de peixes verdadeiramente crípticas descritas da Bacia Amazônica.
- Published
- 2021
43. Zur Systematik einiger Blutsalmler oder „Rosy Tetras“ (Teleostei: Ostariophysi: Characidae).
- Author
-
ZARSKE, AXEL
- Published
- 2014
- Full Text
- View/download PDF
44. New records and distribution extension of Hyphessobrycon itaparicensis Lima & Costa, 2001 (Characiformes: Characidae) in coastal drainages of Sergipe State, northeastern Brazil.
- Author
-
Brito, Marcelo F. G., Lima, Sergio Q. M., Berbel-FilhoBerbel-Filho, Waldir M., and Torres, Rodrigo A.
- Subjects
- *
HYPHESSOBRYCON , *CHARACIDAE - Abstract
The present study reports the first record of the small characid fish Hyphessobrycon itaparicensis Lima and Costa, 2001 in two coastal drainages of Sergipe State, Brazil. This species was collected in three sampling sites from Piauí and Sergipe river basins, both in the hydrographic ecoregion of Northeastern Mata Atlantica. Aspects of habitat, diet composition, phenotypic variation, molecular identification and distribution of H. itaparicensis are herein discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
45. Integrative taxonomy reveals two new cryptic species of Hyphessobrycon Durbin, 1908 (Teleostei: Characidae) from the Maracaçumé and middle Tocantins River basins, Eastern Amazon region
- Author
-
Luis Fernando Carvalho Costa, Pâmella Silva de Brito, Axel M. Katz, Felipe Polivanov Ottoni, Jadson Pinheiro Santos, Erick Cristofore Guimarães, and Pedro H. N. Bragança
- Subjects
Species complex ,020209 energy ,“Rosy tetra” clade ,0211 other engineering and technologies ,Hyphessobrycon ,02 engineering and technology ,GMYC ,Biology ,bPTP ,DNA barcoding ,lcsh:Botany ,021105 building & construction ,lcsh:Zoology ,0202 electrical engineering, electronic engineering, information engineering ,Animalia ,lcsh:QL1-991 ,Clade ,Chordata ,Ecology, Evolution, Behavior and Systematics ,Taxonomy ,Rosy tetra ,Phylogenetic tree ,Actinopterygii ,Characidae ,Biodiversity ,biology.organism_classification ,lcsh:QK1-989 ,Evolutionary biology ,ABGD ,Taxonomy (biology) ,Characiformes - Abstract
Two new species, Hyphessobrycon frickei Guimarães, Brito, Bragança, Katz & Ottoni sp. nov. and H. geryi Guimarães, Brito, Bragança, Katz & Ottoni sp. nov., are herein described, based on seven different and independent species delimitation methods, and on molecular and morphological characters, making the hypothesis of these new species supported from an integrative taxonomy perspective. They belong to the “Rosy tetra” clade, which is mainly characterized by the presence of a dark brown or black blotch on the dorsal fin and the absence of a midlateral stripe on the body. These two new species are distinguished from the other members of this clade mainly by the arrangement, shape and color pattern of humeral and dorsal-fin spots, as well as by other characters related to scale counts and body pigmentation. The placement of the new species within the “Rosy tetra” clade was based on the combination of morphological character states mentioned above and corroborated by a molecular phylogenetic analysis using the mitochondrial gene cytochrome oxidase subunit 1. In addition, a new clade (here termed Hyphessobrycon copelandi clade) within the “Rosy tetra” clade is proposed based on molecular data, comprising H. copelandi, H. frickei sp. nov., H. geryi sp. nov. and a still undescribed species. Our results corroborate the occurrence of hidden species within the “Rosy tetra” clade, as suggested by previous studies.
- Published
- 2020
46. Genetic damage induced by water pollutants in the freshwater fish Hyphessobrycon luetkenii (Characidae) in a reservoir of the Canela National Forest, Brazil.
- Author
-
Bühler, Daniel, Marinowic, Daniel Rodrigo, de Barros, Marcelo Pereira, and da Silva, Luciano Basso
- Subjects
- *
WATER pollution , *FRESHWATER fishes , *HYPHESSOBRYCON , *FOREST reserves , *BIOINDICATORS , *GENETIC toxicology , *FISH genetics - Abstract
Fish have been shown to act as sentinel organisms in genetic toxicology studies and the micronucleus (MN) test using fish erythrocytes has been successfully used to evaluate the genotoxic impact of environmental pollutants on aquatic environments. This study used the MN test of peripheral blood of specimens of a native fish species (Hyphessobrycon luetkenii) to evaluate the genotoxicity of the water of two unconnected reservoirs of the Canela National Forest in southern Brazil. Fish were caught in the reservoirs and MN frequencies in blood smears were determined. Baseline MN frequency ofH. luetkeniiwas determined in the uncontaminated reservoir (reference site) and compared with the results obtained at two different sampling periods (winter and spring) in the reservoir which receives discharges of industrial and municipal wastes. In the spring season, MN frequency in the contaminated reservoir was about five times higher than in the reference site (0.51‰ and 0.10‰, respectively). The results of this study indicate that some fish populations are at risk of exposure to genotoxic pollutants in the Canela National Forest. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
47. Hyphessobrycon sateremawe Faria & Bastos & Zuanon & Lima 2020, new species
- Author
-
Faria, Tiago C., Bastos, Douglas A., Zuanon, Jansen, and Lima, Fl��vio C. T.
- Subjects
Actinopterygii ,Characidae ,Animalia ,Hyphessobrycon sateremawe ,Biodiversity ,Characiformes ,Hyphessobrycon ,Chordata ,Taxonomy - Abstract
Hyphessobrycon sateremawe, new species (Figs. 1���3) urn:lsid:zoobank.org:act: 9D1E72B3-0C58-49A4-9717-A3BDAA79E250 Holotype. INPA59494 (26.2mm SL), Brazil, Amazonas, Nova Olinda do Norte,stream tributary to rioAbacaxis, Paran�� do Urari�� basin, 4��17���5���S, 58��34���44���W, J. Zuanon, P. Guarido, J. Sodr��, A.A. Souza Filho & E.M. Gomes, 9Aug 2015. Paratypes. All from Brazil, Amazonas state. INPA 34941 (49, 13.4���29.8 mm SL); ZUEC 17225 (5, 22.7���27.9 mm SL), Mau��s, Comunidade Pingo de Ouro, near Campina, rio Mau��s-A��u basin, Paran�� do Urari�� basin, 3��47���48���S, 57��36���21���W, R. R. de Oliveira & W. Pedrosa, 5 Jun 2010. INPA 34925 (20, 14.1���24.2 mm SL), Mau��s, Igarap�� 6 (Campina), comunidade Pingo de Ouro, rio Mau��s-A��u basin, Paran�� do Urari�� basin, 3��48���36.00���S, 57��36���43.00���W, R. R. de Oliveira & W. Pedroza, 5 Jun 2015. INPA 50729 (73, 4 C&S, 13.5���27.6 mm SL); ANSP 207955 (5, 23.6���27.3 mm SL); ZUEC 17226 (5, 22.2���26.2 mm SL), same data as holotype. INPA 50689 (47, 15.1��� 26.1 mm SL); MPEG 38945 (5, 23.1���26.1 mm SL); FMNH 144980 (5, 22.6���26.8 mm SL), Nova Olinda do Norte, stream trib. rio Abacaxis, 4��53���5���S, 58��34���57���W, J. Zuanon, E.G. Ferreira, D.A. Bastos, P.M. Ito & P. Guarido, 8 Aug 2015. Diagnosis. Hyphessobrycon sateremawe can be distinguished from all congeners, except Hy. amapaensis, Hy. ericae, Hy. heterorhabdus, and Hy. wosiacki, by the presence of an elongated humeral blotch, anteriorly well defined, that becomes progressively diffuse and blurred posteriorly, overlapping with a continuous midlateral dark stripe. Hyphessobrycon sateremawe can be distinguished from Hy. amapaensis, Hy. ericae, Hy. heterorhabdus, and Hy. wosiacki by possessing humeral blotch and continuous midlateral stripe broad, occupying vertical height equivalent of two scale rows to middle of body (vs. humeral blotch and continuous midlateral stripe only broad anteriorly, narrowing considerably after humeral region to one scale row high, or less). Hyphessobrycon sateremawe may be additionaly distinguished from Hy. amapaensis by possessing, in life, a narrow longitudinal red stripe that is anteriorly not continuous and composed by red dots (vs. presence of a thick red stripe that is continuous in its entire extension), and from Hy. ericae and Hy. wosiacki by lacking a caudal peduncle blotch (vs. presence of a caudal peduncle blotch). Description. Morphometric data for holotype and paratypes in Table 1. Body compressed. Greatest body depth at vertical through dorsal-fin origin. Dorsal profile of head slightly convex from upper lip to vertical through posterior nostril, straight from that point to tip of supraoccipital spine. Dorsal profile of body slightly convex from latter point to anterior terminus of dorsal fin. Dorsal-fin base straight, posteroventrally slanted, slightly convex from posterior terminus of dorsal fin to adipose-fin insertion and slightly concave between adipose-fin insertion and origin of anteriormost dorsal procurrent caudal-fin ray. Ventral profile of head and body convex from tip of lower jaw to anal-fin origin. Anal-fin base straight, posterodorsally slanted. Ventral profile of caudal peduncle slightly concave. Jaws equal, mouth terminal. Posterior terminus of maxilla reaching vertical through anterior margin of iris. Maxilla approximately at 45 degrees angle relative to longitudinal axis of body. Nostrils close to each other, anterior opening oval, posterior opening crescent-shaped. Premaxillary teeth in two rows. Outer teeth row with 3 bi- to tricuspid teeth. Inner row with 5 bi- to tetracuspid teeth, symphyseal tooth narrower than remaining teeth. Maxilla with 3(2), 4(1), or 5(1) conical to tricuspid teeth. Dentary with 12(2), 13(2) or 14(1) teeth, anteriormost 4 teeth larger, tri- to tetracuspid, 8���10 remaining teeth considerably smaller and conical. Central cusp of all teeth more developed than remaining lateral cusps (Fig. 3). Scales cycloid. Two to seven radii strongly marked, circulii well marked anteriorly, weakly marked posteriorly. Lateral line slightly deflected downward and incompletely pored, with 7*(7), 8(24) or 9(5) perforated scales. Longitudinal scales series including lateral-line scales 32(2), 33*(6), 34(5), 35(8) or 36(1). Longitudinal scale rows between dorsal-fin origin and lateral line 5*(35). Longitudinal scale rows between lateral line and pelvic-fin origin 3*(30) or 4(5). Predorsal scales 9*(13), 10(12) or 11(8). Circumpeduncular scales 11(1), 12*(26) or 13(1). Caudal fin with few small scales basally. Dorsal-fin rays ii, 9*(35). Dorsal-fin origin slightly anterior from middle of standard length. First dorsal-fin pterygiophore inserting behind neural spine of 9th(4) vertebrae. Adipose fin present. Anteriormost anal-fin pterygiophore inserting posterior to haemal spine of 14th(1) or 15th(3) vertebrae. Anal-fin rays iv, 18(2), 19(22), 20(23), 21(5) or 22(2). Last unbranched and first to third anteriormost branched rays distinctly longer than remaining rays, subsequent rays gradually decreasing in size. Pectoral-fin rays i, 9(1), 10(16) or 11*(17). Pelvic-fin rays i, 7*(35). Tip of pelvic-fin reaching anteriormost anal-fin rays. Caudal fin forked, lobes roughly rounded and of similar size. Ten (1) or 11(3) dorsal procurrent caudal-fin rays, and 8(1) or 9(3) ventral procurrent caudal-fin rays. Vertebrae 33(4). Supraneurals 4(3) or 5(1), with upper portion wider. Branchiostegal rays 4. First gill arch with 1(3) or 2(1) hypobranchial, 8(1) or 9(3) ceratobranchial, 1(4) on cartilage between ceratobranchial and epibranchial, and 3(1) or 4(3) epibranchial gill-rakers. Color in alcohol. Overall body color beige. Dorsal portion of head and body darker. Ventral portion of head and body with few scattered dark chromatophores. Snout and dentary tip dark. Dark chromatophores scattered along infraorbitals and opercle, concentrated dorsally. Dorsal scales row dark, with pigmentation more concentrated at center of scales. Three dorsalmost scale rows with conspicuous reticulated pattern formed by dark chromatophores concentrated at scales margins. Area immediately above humeral blotch and middlateral dark stripe clear, with evenly-scattered, light-grey chromatophores. Humeral blotch broad and conspicuous, with diffuse dorsal and welldefined ventral expansions, occupying lateral line scale row and dorsal scale row immediately above, becoming gradually narrower and more diffuse posteriorly. Posterior region of humeral blotch gradually becoming diffuse and coalescing with midlateral dark stripe. Midlateral dark stripe thicker anteriorly, narrowing posteriorly and turning fainter. Dark chromatophores evenly scattered throughout abdominal region. Region above anal fin with dark chromatophores aligned along myocommata of hypaxial muscles. Line of dark chromatophores parallel to anal fin margin at hiatus between end of hypaxial muscles and basis of anal-fin muscles. Caudal fin mostly hyaline, with middle caudal rays with high concentration of dark chromatophores. Anal fin with dark chromatophores scattered along interradial membranes, more concentrated along distal region of anal fin lobe. Dorsal fin ray hyaline, with dark chromatophores concentrated on anteriormost rays. Adipose fin with few scattered dark chromatophores mainly concentrated on proximal region. Pectoral and pelvic fins hyaline. Color in life. Overall body with olivaceous hue, with exception of middle and ventral region of head and abdominal region, with silvery hue. Dorsal portion of eye red. Tricolor longitudinal pattern starting immediately posterior to opercle and ending immediately before caudal fin basis, composed of narrow dorsal red stripe, narrow middle iridescent stripe, and broad ventral dark longitudinal pattern composed of humeral blotch followed posteriorly by midlateral stripe. Longitudinal red stripe anteriorly not continuous, formed by row of red spots, becoming continuous posteriorly and thicker on posterior half of caudal peduncle. Intermediary iridescent stripe golden, relatively narrow and diffuse, thicker anterior to humeral blotch and becoming narrower posteriorly, ending anteriorly to caudal peduncle. Scattered iridescent chromatophores throughout abdominal region (Fig. 2). Variation. Specimens from the rio Abacaxis basin presents a darker color pattern on dorsal region, dorsolateral region and midlateral stripe, and thicker humeral blotch, especially on posterior region, when compared to specimens from the rio Mau��s-A��u basin. An aquarium raised specimen from the rio Abacaxis basin presented a very dark and longer midlateral stripe when compared to specimen collected from the same locality and fixed immediately after collection (Fig. 2). Sexual dimorphism. Males present tiny bony hooks on distal half of last unbranched anal-fin ray and all branched anal-fin rays (1 to 27), on caudal-fin rays (0 to 9), on distal half of dorsal-fin rays (0 to 17), on all extension of pelvic-fin rays (12 to 53) and on distalmost region of pectoral fin (0 to 2) (all bony hook counts made in a single C&S specimen, INPA 50729, 24.0 mm SL). Bony hooks larger on anterior rays of anal fin and on pelvic fin, observed in INPA 50729 (13, 18.4���27.3 mm SL) and INPA 34941 (5, 19.6���27.5 mm SL) specimens. Bony hooks of dorsal, caudal and pectoral fins only discernible in C&S individuals. Smaller male presenting bony hooks 18.4 mm SL (INPA 50729). Females reach larger sizes than males (largest female with 29.8 mm SL, largest male with 27.5 mm SL). Distribution. Hyphessobrycon sateremawe is known from the rio Abacaxis and rio Mau��s-A��u, both tributaries of the Paran�� do Urari�� drainage, Amazonas state, Brazil (Fig. 4). Ecological notes. The type locality of Hy. sateremawe consists of small forest streams (maximum width and depth of 2.0 m and 0.30 m, respectively) densely covered by the canopy of the forest. The stream water is clear to slightly tinted in yellow, with slow current velocity (0.13���0.30 m * s-1). The substrate is composed predominantly by submerged coarse litter (55%), sand patches (30%), small logs and branches (11%), and fine roots from the riparian vegetation (4%). Hyphessobrycon sateremawe shares the streams with other small characid species (Hemigrammus coeruleus Durbin, He. analis Durbin, Moenkhausia cf. dyktiota Lima & Toledo-Piza and Tyttobrycon sp.), cichlids (Laetacara sp., Apistogramma sp. ���abacaxis��� and Crenicichla notophthalmus Regan), the erythrinid Erythrinus erythrinus (Bloch & Schneider), the crenuchids Crenuchus spilurus G��nther and Elachocharax junki (G��ry), the lebiasinids Copella nattereri (Steidachner) and Pyrrhulina cf. beni (Pearson)), the rivulids Anablepsoides micropus (Steindachner), Laimosemion kirovskyi (Costa), and Laimosemion sp., as well as some catfishes, such as the cetopsid Helogenes marmoratus G��nther and the heptapterid Rhamdia sp., electric fishes (Gymnotiformes: two species of Gymnotus and one of Microsternarchus), and an undescribed species of the swamp eel (Synbranchus sp.). Gut content analysis of 5 specimens (INPA 50729) revealed the presence of ants, an Ephemeroptera larvae, a Pseudoscorpionida pedipalp, an aquatic beetle, an Acari, diverse Arthropoda remains, algae and unidentified matter. Etymology: The specific name honors the Sater��-Maw��, an indigenous group of the Tupi-Guarani language family that lived in the region between the lower portions of rio Tapaj��s and rio Madeira, including the area of rio Abacaxis and rio Mau��s-A��u. The Sater��-Maw�� joined the Cabanagem rebellion (1835���1839) and were in reprisal decimated by loyalist forces of the Brazilian empire. They were later (1850) living under an extensive mission under the Fransciscan friar Pedro de Ciriana (Hemming, 1995). The Sater��-Maw�� are renowned as the indigenous group that discovered and started using the guaran�� (Paullinia cupana), and for the Tocandira ant ritual, a rite of passage where boys insert their hands in gloves with fastened, living tocandira ants (Paraponera clavata) (Botelho & Weigel, 2011). Today the Sater��-Maw�� people live mainly in the Terra Ind��gena Andir��-Marau, with one group in the Terra Ind��gena Coat��-Laranjal and groups in the cities of Manaus, Nova Olinda do Norte, Barreirinha, Mau��s and Parintins, all from the state of Amazonas, Brazil., Published as part of Faria, Tiago C., Bastos, Douglas A., Zuanon, Jansen & Lima, Fl��vio C. T., 2020, A new Hyphessobrycon (Characiformes: Characidae) of the Hyphessobrycon heterorhabdus species-group from the Central Amazon basin, Brazil, pp. 275-284 in Zootaxa 4859 (2) on pages 276-281, DOI: 10.11646/zootaxa.4859.2.6, http://zenodo.org/record/4413042, {"references":["Hemming, J. (1995) Amazon frontier. The defeat of the Brazilian Indians. Pan Books, London, 618 pp.","Botelho, J. B. & Weigel, V. A. C. M. (2011) The Satere-Mawe community of Y'Apyrehyt: ritual and health on the urban outskirts of Manaus. Historias, Ciencias, Saude-Manguinhos, 18, 723 - 744. https: // doi. org / 10.1590 / S 0104 - 59702011000300007"]}
- Published
- 2020
- Full Text
- View/download PDF
48. A new Hyphessobrycon (Characiformes: Characidae) of the Hyphessobrycon heterorhabdus species-group from the Central Amazon basin, Brazil
- Author
-
Tiago C. Faria, Douglas A. Bastos, Jansen Zuanon, and Flávio C. T. Lima
- Subjects
Male ,Scale (anatomy) ,biology ,Actinopterygii ,Characidae ,Peduncle (anatomy) ,Uraria ,Hyphessobrycon ,Zoology ,Biodiversity ,Characiformes ,biology.organism_classification ,Species group ,Animal Fins ,Animalia ,Animals ,Animal Science and Zoology ,Chordata ,Ecology, Evolution, Behavior and Systematics ,Brazil ,Hyphessobrycon heterorhabdus ,Taxonomy - Abstract
A new species of Hyphessobrycon Durbin from the Paraná do Urariá system in Central Amazon region, Amazonas state, Brazil, is described. The new species is allocated into the Hyphessobrycon heterorhabdus species-group due to its color pattern, composed by a well-defined, horizontally elongated humeral blotch continuous with a conspicuous midlateral dark stripe that becomes blurred towards the caudal peduncle, and can be distinguished from all other species of the group by possessing humeral blotch and continuous midlateral stripe broad, occupying vertical height equivalent of two scale rows. A tricolored pattern composed dorsally by a red or reddish longitudinal stripe, a middle iridescent, golden or silvery longitudinal stripe, and ventrally by a variably-developed longitudinal dark stripe is identified as a putative additional character shared by the species of the Hyphessobrycon heterorhabdus species-group. The presence of bony hooks in all fins in mature males of some species of the Hyphessobrycon heterorhabdus species-group is also discussed.
- Published
- 2020
49. Acute Toxicity and Determination of the Active Constituents of Aqueous Extract of Uncaria tomentosa Bark in Hyphessobrycon eques.
- Author
-
Aguinaga, Jefferson Yunis, Claudiano, Gustavo S., Marcusso, Paulo F., Ikefuti, Cynthia, Ortega, George G., Eto, Silas F., da Cruz, Claudinei, Moraes, Juliet R. E., Moraes, Flávio R., and Fernandes, João B. K.
- Subjects
- *
HYPHESSOBRYCON , *UNCARIA tomentosa , *DRUG toxicity , *CHROMATOGRAPHIC analysis , *BARK , *MEDICINAL plants , *MEDICATION safety , *PLANT extracts - Abstract
Uncaria tomentosa is a medicinal plant used in folk medicine by Amazon tribes. In this study the constituents of aqueous extract of U. tomentosa bark were quantified by chromatographic technique and its lethal concentration 50 (48h) in Hyphessobrycon eques was determined. The chromatography showed high levels of oxindole alkaloids, quinovic acid glycosides, and low molecular weight polyphenols. The CL50 48h was 1816 mg/L. Fish showed behavior changes at concentrations above 2000 mg/L, accompanied by a significant decrease of dissolved oxygen. At the highest concentration 100% mortality was observed attributed to oxygen reduction by the amount of oxindole alkaloids, polyphenols accumulation of the extract in the gills, and the interaction of these compounds with dopamine. In conclusion, the aqueous extract of U. tomentosa did not alter the chemical components and it was shown that U. tomentosa has low toxicity to H. eques; therefore, it can be used safely in this species. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
50. Mitochondrial genomes of four American characins and phylogenetic relationships within the family Characidae (Teleostei: Characiformes)
- Author
-
Yudong Li, Ying Zhu, Honghua Ruan, Hongyi Liu, Yisun Wei, and Cheng-He Sun
- Subjects
0301 basic medicine ,Systematics ,Mitochondrial DNA ,Hyphessobrycon ,Characiformes ,03 medical and health sciences ,Open Reading Frames ,0302 clinical medicine ,RNA, Transfer ,Phylogenetics ,Genetics ,Animals ,Codon ,Phylogeny ,biology ,Phylogenetic tree ,Molecular Sequence Annotation ,General Medicine ,biology.organism_classification ,Characidae ,030104 developmental biology ,Evolutionary biology ,RNA, Ribosomal ,030220 oncology & carcinogenesis ,Genome, Mitochondrial ,Phylogenetic nomenclature - Abstract
Mitochondrial genome sequencing has become widely used in numerous fields, including systematics, phylogeny, and evolutionary genomics. To elucidate phylogenetic relationships among members of the family Characidae, we sequenced the mitogenomes of four species within this family, namely, Aphyocharax rathbuni, Hyphessobrycon herbertaxelrodi, Hyphessobrycon megalopterus, and Prionobrama filigera. The mitogenomes were found to be 16,678–16,841 bp and encode 37 typical mitochondrial genes (13 protein-coding, 2 ribosomal RNA, and 22 transfer RNA genes). Gene arrangements in the studied species are consistent with those in the inferred ancestral fish. Most protein-coding genes in these mitogenomes have typical ATN start codons and TAR or an incomplete stop codon T–. Phylogenetic relationships based on Bayesian inference and maximum-likelihood methods indicated that A. rathbuni, H. herbertaxelrodi, H. megalopterus, and P. filigera belong to the Characidae family. Of the 15 Characidae species studied, three pairs were of the same genus, but the results for only one pair were well supported. This phylogenetic classification is inconsistent with those described in previous morphological and taxonomic studies on this family. Thus, systematic classification of the Characidae requires further examination. Our findings yield new mitogenomic data that will provide a basis for future phylogenetic and taxonomic studies.
- Published
- 2020
Catalog
Books, media, physical & digital resources
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.