26 results on '"Animal parasite"'
Search Results
2. Diagnosis of Filariasis with DNA Probes
- Author
-
McReynolds, L. A., Poole, C. B., Williams, S. A., Partono, F., Vaheri, Antti, editor, Tilton, Richard C., editor, and Balows, Albert, editor
- Published
- 1991
- Full Text
- View/download PDF
Catalog
3. Diversity of parasites inCichlasoma amazonarumKullander, 1983 during rainy and dry seasons in eastern Amazon (Brazil)
- Author
-
A. A. Carvalho, Marcos Tavares-Dias, A. A. CARVALHO, Unifap, and MARCOS TAVARES DIAS, CPAF-AP.
- Subjects
0301 basic medicine ,Wet season ,Population ,Zoology ,Aquatic Science ,Peixe água doce ,medicine.disease_cause ,03 medical and health sciences ,Dry season ,Infestation ,medicine ,Animal parasite ,Parasite hosting ,education ,education.field_of_study ,Ichthyophthirius multifiliis ,biology ,Ecology ,seasonal variation ,030108 mycology & parasitology ,biology.organism_classification ,Variação sazonal ,Parasito de animal ,freshwater fish ,Freshwater fish ,Species richness - Abstract
This study investigated the influence of the rainy and dry seasons on the parasite communities of Cichlasoma amazonarum (Kullander, 1983) in a tributary of the Amazon River system, northern Brazil. Of 112 fish examined, 95.5% were parasitized by Ichthyophthirius multifiliis, Piscinoodinium pillulare, Gussevia disparoides, Posthodiplostomum sp., Procamallanus (Spirocamallanus) inopinatus, and Echinorhynchus paranensis, as well as by the Glossiphoniidae leech. Ichthyophthirius multifiliis and P. pillulare were the dominant parasite species, with I. multifiliis the most prevalent and abundant; the leech (Glossiphoniidae) was the least prevalent and least abundant. Parasites presented an aggregate dispersion pattern and seasonal variations in infestation levels, influenced by the environmental conditions in the rainy season. Variation in the parasite dynamics created overall changes in the parasite communities, characterized by greater diversity, species richness and evenness during the rainy season.However, there was a high similarity (99.8%) in the parasite community structure between the rainy and dry seasons. During the dry season the hosts had predominantly 1?3 parasite species compared to 3?4 parasites in the rainy season. Some parasites in the eastern Amazon undergo population changes relating to seasonality. These results thus indicate the correct season to apply adequate prophylactic measures to reduce negative impacts of parasites in this wild ornamental fish when captured. Made available in DSpace on 2017-11-16T23:31:25Z (GMT). No. of bitstreams: 1 CPAFAP2017DiversityofparasitesinCichlasoma.pdf: 570483 bytes, checksum: 79046ce42c62f4c187a2d2dee4e16527 (MD5) Previous issue date: 2017-11-16 more...
- Published
- 2017
- Full Text
- View/download PDF
4. Respostas Hematológicas de Arapaima gigas (Pisces: Arapaimidae) Parasitados Naturalmente por Protozoários e Metazoários
- Author
-
Marcos Tavares-Dias, E. T. O. Yoshioka, Moacir Borges, Renata das Graças Barbosa Marinho, Lucas Vasques Tostes, RENATA DAS GRAÇAS BARBOSA MARINHO, LUCAS VASQUES TOSTES, MOACIR BORGES, ELIANE TIE OBA YOSHIOKA, CPAF-AP, and MARCOS TAVARES-DIAS, CPAF-AP. more...
- Subjects
Veterinary medicine ,Fish farming ,Peixe de água doce ,ved/biology.organism_classification_rank.species ,Pharmaceutical Science ,Mean corpuscular hemoglobin ,Hematocrit ,hematology ,medicine ,Animal parasite ,Pharmacology (medical) ,lcsh:QH301-705.5 ,Mean corpuscular volume ,White blood cell ,Mean corpuscular hemoglobin concentration ,medicine.diagnostic_test ,Ichthyophthirius multifiliis ,biology ,ved/biology ,Ecology ,Fresh water fish ,biology.organism_classification ,Hematologia ,Animal biochemistry ,lcsh:Biology (General) ,Complementary and alternative medicine ,Freshwater fish ,Arapaima gigas ,Parasito animal ,Bioquímica animal ,Glóbulo branco ,circulatory and respiratory physiology - Abstract
O presente estudo comparou os parâmetros sanguíneos de Arapaima gigas Schinz, 1822 de cultivo, parasitados por uma espécie de protozoário e três espécies de helmintos. Em uma das pisciculturas os peixes foram parasitados somente por Ichthyophthirius multifiliis (Ciliophora), enquanto na outra foram parasitados por I. multifiliis, Dawestrema cycloancistrium e Dawestrema cycloancistrioides (Monogenoidea) e Polyacanthorhynchus macrorhynchus (Acanthocephala). Determinou-se a contagem total de eritrócitos, trombócitos e leucócitos (total e diferencial), hematócrito, concentração de hemoglobina, volume corpuscular média (VCM), hemoglobina corpuscular média (HCM), concentração da hemoglobina corpuscular média (CHCM), glicose e proteínas totais. Os peixes parasitados por I. multifiliis, D. cycloancistrium, D. cycloancistrioides e P. macrorhynchus mostraram menores valores de hematócrito, VCM e níveis de glicose, e maior concentração de hemoglobina, HCM, CHCM, número de eritrócitos, monócitos, neutrófilos e eosinófilos totais quando comparados aos peixes parasitados somente por I. multifiliis. Portanto, esses resultados indicam uma resposta desses parâmetros sanguíneos ao parasitismo A. gigas. Palavras chaves: bioquímica, leucócitos, parasitos, peixe de água doce, sangue. DOI: http://dx.doi.org/10.18561/2179-5746/biotaamazonia.v5n1p105-108 more...
- Published
- 2015
- Full Text
- View/download PDF
5. Diversity of parasites in Curimata incompta (Curimatidae), a host from Amazon river system in Brazil
- Author
-
Ligia Rigôr Neves, Marcos Tavares-Dias, Evelyn Cristhine Rocha Braga, LIGIA RIGÔR NEVES, UNIFAP, EVELYN CRISTHINE ROCHA BRAGA, UEAP, and MARCOS TAVARES-DIAS, CPAF-AP.
- Subjects
0301 basic medicine ,education.field_of_study ,Parasito animal ,Freshwater fish ,Ichthyophthirius multifiliis ,Curimatidae ,Amazon rainforest ,Ecology ,Peixe de água doce ,Population ,Parasitism ,030108 mycology & parasitology ,Biology ,biology.organism_classification ,03 medical and health sciences ,Animal ecology ,Dominance (ecology) ,Original Article ,Parasitology ,Animal parasite ,Ecologia animal ,Species richness ,education - Abstract
This paper is the first study on host-parasite relationship in wild Curimata incompta Vari, 1984 (Curimatidae) from Amazon river system, Northern Brazil. In 40 specimens examined from December 2012 to November 2013, 615,818 parasites were collected, such as Ichthyophthirius multifiliis, Piscinoodinium pilullare, Urocleidoides sp., Posthodiplostomum sp., Gorytocephalus elongorchis and Braga patagonica. The parasites’ component community had a low Brillouin diversity (0.16 ± 0.15), a low species richness (3.1 ± 0.7), a low evenness (0.09 ± 0.09) and a high dominance of Berger–Parker (0.96 ± 0.06). I. multifiliis was the dominant parasite species and it showed the highest prevalence and intensity in the host population. There was an aggregate dispersion of parasites, but the low parasitism did not affect the body condition of the host. The occurrence of parasites in C. incompta was due to their life habits and food behavior. This study, besides expanding the geographical distribution of G. elongorchis in Brazil, records the first occurrence of these six parasites in C. incompta. more...
- Published
- 2015
- Full Text
- View/download PDF
6. Metazoan parasites of Geophagus proximus, a Cichlidae fish from the Eastern Amazon (Brazil)
- Author
-
OLIVEIRA, M. S. B., CORRÊA, L. L., CASTRO, L. de A., BRITO, L. S., TAVARES-DIAS, M., MARCOS SIDNEY BRITO OLIVEIRA, UFOPA, LINCOLN LIMA CORRÊA, UFOPA, LILIANE DE ARAÚJO CASTRO, UFOPA, LETÍCIA SILVA BRITO, UFOPA, and MARCOS TAVARES-DIAS, CPAF-AP. more...
- Subjects
Helminto ,Freshwater Fish ,Helminths ,Peixe de água doce ,Animal parasite ,Parasito de animal - Abstract
The present study investigated the fauna of metazoan parasites of a Geophagus proximus population from the lower Tapajós River, in the state of Pará, northern Brazil. A total of 137 monogeneans were collected from the gills of G. proximus , including Sciadicleithrum kritskyi , Sciadicleithrum paranaensis and Sciadicleithrum geophagi , while 119 Raphidascaris (Sprentascaris ) lanfrediae nematodes and 28 metacercariaes of digenea undetermined were collected from the intestine. Hosts harboring four species of parasites were predominant. The parasites had an aggregated dispersion pattern. The present study represents the first record of S. geophagi parasitizing G. proximus , increasing the geographic distribution of these parasite species to the Tapajós River basin. Made available in DSpace on 2017-04-11T16:04:15Z (GMT). No. of bitstreams: 1 CPAFAP2017MetazoanparasitesofGeophagus.pdf: 2627868 bytes, checksum: 867c6fbb3ea8b35ccf1160f02dfd2c40 (MD5) Previous issue date: 2017-04-10 more...
- Published
- 2017
7. Structure of parasites community in Chaetobranchopsis orbicularis (Cichlidae), a host from the Amazon River system in northern Brazil
- Author
-
Marcos Tavares-Dias, Marcos Sidney Brito Oliveira, MARCOS TAVARES DIAS, CPAF-AP, and MARCOS SIDNEY BRITO OLIVEIRA, Bolsista CPAF-AP.
- Subjects
0106 biological sciences ,0301 basic medicine ,Zoology ,Parasitism ,Biology ,010603 evolutionary biology ,01 natural sciences ,03 medical and health sciences ,Clinostomum marginatum ,Rivers ,Animals ,Dominance (ecology) ,Parasite hosting ,Animal parasite ,Parasites ,General Veterinary ,Ichthyophthirius multifiliis ,Ecology ,Host ,Cichlids ,General Medicine ,030108 mycology & parasitology ,biology.organism_classification ,Food web ,Parasito de animal ,Infectious Diseases ,Arguloida ,Insect Science ,Protozoário ,Hospedeiro ,Species evenness ,Parasitology ,Species richness ,Brazil ,Protozoan - Abstract
The aim of this paper was to investigate the component communities of parasites in Chaetobranchopsis orbicularis from a tributary of the Amazon River system, in Northern Brazil. In 32 fish examined, 902,551 parasites were collected, including Ichthyophthirius multifiliis, Piscinoodinium pillulare, Sciadicleithrum geophagi, Posthodiplostomum sp., Clinostomum marginatum, Echinorhynchus paranensis, Neoechinorhynchus pterodoridis, and Dolops longicauda. I. multifiliis was the dominant and abundant parasite species. The ectoparasites presented aggregate dispersion, but the endoparasites showed random dispersion pattern. Mean species richness was 4.0 ± 1.5 parasites, mean Brillouin diversity (HB) was 0.33 ± 0.28, mean evenness was 0.15 ± 0.13, and Berger-Parker dominance (d) was 0.85 ± 0.17. The species richness of parasites and HB were positively correlated with the length of hosts. There was positive correlation between the abundance of P. pillulare and length and weight, between the abundance of I. multifiliis and weight, as well as between the abundance of E. paranensis and N. pterodoridis and the length of hosts. Body condition of the hosts was not affected by moderate parasitism. The low diversity of endoparasites indicates that C. orbicularis is a host with low position in the food web. This is the first record of all these parasites for C. orbicularis. more...
- Published
- 2017
8. Ectoparasites community in Satanoperca jurupari (Cichlidae) from the Jari River, a tributary from Amazon River in Northern Brazil
- Author
-
Drielly Oliveira Ferreira, Marcos Sidney Brito Oliveira, Ligia Rigôr Neves, Marcos Tavares-Dias, Raissa Alves Gonçalves, MARCOS SIDNEY BRITO DE OLIVEIRA, UFOPA, RAISSA ALVES GONÇALVES, UNL, LIGIA RIGOR NEVES, Unifap, DRIELLY OLIVEIRA FERREIRA, Estagiária CPAF-AP, and MARCOS TAVARES DIAS, CPAF-AP. more...
- Subjects
0301 basic medicine ,Gills ,030231 tropical medicine ,Peixe de água doce ,Zoology ,parasites ,diversity ,Agregação ,03 medical and health sciences ,Diversity index ,Aggregation ,0302 clinical medicine ,Rivers ,Dominance (ecology) ,Animals ,Animal parasite ,Ergasilus ,lcsh:SF1-1100 ,Diversity ,General Veterinary ,biology ,Ichthyophthirius multifiliis ,Cichlids ,Freshwater fish ,030108 mycology & parasitology ,biology.organism_classification ,Satanoperca jurupari ,Parasito de animal ,ectoparasitos ,freshwater fish ,peixes de água doce ,Species evenness ,Diversidade ,Parasitology ,lcsh:Animal culture ,Species richness ,Brazil - Abstract
The aim of this study was to investigate the gills parasites in Satanoperca jurupari from the Jari River, state of Amapá, in eastern Amazon (Brazil). The gills of 100% of the hosts were parasitized by Ichthyophthirius multifiliis (Protozoa), Sciadicleithrum juruparii (Monogenoidea) Genarchella genarchella, Posthodiplostomum sp. (Digenea) Ergasilus coatiarus and Argulus multicolor (Crustacea), and a total of 27,043 parasites were collected. However, the dominance was of I. multifiliis and there was aggregated dispersion of parasites with greater discrepancy for S. juruparii and A. multicolor. Low species richness of parasites (3.1 ± 1.1), low Brillouin diversity index (0.27 ± 0.23), low evenness (0.16 ± 0.13) and high dominance of Berger-Parker (0.88 ± 0.15) were found. The community of parasites in S. jurupari was characterized by low species richness, low diversity and low evenness, with high prevalence and low abundance. The size of host did not have any influence on the parasites community, but the host behavior and availability of infective stages of the parasites were factors structuring the community of ectoparasites found here. Resumo O objetivo deste estudo foi investigar a comunidade de parasitos das brânquias de Satanoperca jurupari do Rio Jari, Estado do Amapá, região da Amazônia oriental (Brasil). As brânquias de 100% dos hospedeiros estavam parasitadas por Ichthyophthirius multifiliis (Protozoa), Sciadicleithrum juruparii (Monogenoidea), Genarchella genarchella, Posthodiplostomum sp. (Digenea), Ergasilus coatiarus e Argulus multicolor (Crustacea) e foi coletado um total de 27.043 parasitos. Porém, a dominância foi de I. multifiliis e houve dispersão agregada de parasitos com maior discrepância de S. juruparii e A. multicolor. Foi encontrada uma baixa riqueza de espécies de parasitos (3,1 ± 1,1), baixa de diversidade de Brillouin (0,27 ± 0,23), baixa equitabilidade do índice de diversidade (0,16 ± 0,13) e elevada dominância de Berger-Parker (0,88 ± 0,15). A comunidade de parasitos foi caracterizada por baixa riqueza de espécies, baixa diversidade, baixa uniformidade, alta prevalência e baixa abundância. O tamanho dos hospedeiros não teve influência sobre a comunidade parasitos, mas o comportamento dos hospedeiros e a disponibilidade de formas infectantes dos parasitos foram os fatores estruturando a comunidade dos ectoparasitos encontrados. more...
- Published
- 2017
9. First study on communities of parasites in Triportheus rotundatus, a Characidae fish from the Amazon River system (Brazil)
- Author
-
SANTOS, P. H. N., TAVARES-DIAS, M., PAULO HENRIQUE NASCIMENTO SANTOS, Unifap, and MARCOS TAVARES-DIAS, CPAF-AP.
- Subjects
Endoparasito ,endoparasites ,Peixe de água doce ,Infracommunity ,Infracomunidade ,Animal parasite ,Parasito de animal - Abstract
This study was the first investigation on the parasites of Triportheus rotundatus, a Characiformes fish from the Amazon, in Brazil. All the fish collected (100%) in a tributary from the Amazon River system were infected by one or more parasite species. The mean species richness of parasites was 4.9 ± 0.9, the Brillouin index was 0.39 ± 0.16, the evenness was 0.24 ± 0.09 and the Berger-Parker dominance was 0.81 ± 0.13. A total of 1316 metazoan parasites were collected, including Anacanthorus pithophallus, Anacanthorus furculus, Ancistrohaptor sp. (Dactylogyridae), Genarchella genarchella (Derogenidae), Posthodiplostomum sp. (Diplostomidae), Procamallanus (Spirocamallanus) inopinatus (Camallanidae), Echinorhynchus paranensis (Echinorhynchidae) and Ergasilus sp. (Ergasilidae), but monogenoideans were the dominant parasites. These parasites presented an aggregate dispersion pattern, except for P. (S.) inopinatus, which showed a random dispersion pattern. The body conditions of the hosts were not affected by the parasitism levels. This first report of these parasites for T. rotundatus indicates that the presence of ectoparasites and endoparasites was due to hosts behavior and availability of infective stages in the environment, and this was discussed. Made available in DSpace on 2017-04-13T23:55:12Z (GMT). No. of bitstreams: 1 CPAFAP2017Firststudyoncommunitiesofparasites.pdf: 5705681 bytes, checksum: 375b63ec8409516f87635509013d2204 (MD5) Previous issue date: 2017-04-13 more...
- Published
- 2017
10. Role of Preformed Factors in Specificity
- Author
-
Schönbeck, Fritz, Wood, R. K. S., editor, and Graniti, A., editor
- Published
- 1976
- Full Text
- View/download PDF
11. Ectoparasites and endoparasites community of Ageneiosus ucayalensis (Siluriformes: Auchenipteridae), catfish from Amazon River system in northern Brazil
- Author
-
Marcos Tavares-Dias, Drielly Oliveira Ferreira, DRIELLY DE OLIVEIRA FERREIRA, Bolsista CPAF-AP, and MARCOS TAVARES DIAS, CPAF-AP.
- Subjects
0106 biological sciences ,0301 basic medicine ,Helminths ,food.ingredient ,Peixe de água doce ,Zoology ,010603 evolutionary biology ,01 natural sciences ,Helminto ,03 medical and health sciences ,food ,Clinostomum marginatum ,Abundance (ecology) ,Animal parasite ,Amazon ,Diversity ,biology ,Ichthyophthirius multifiliis ,Ageneiosus ucayalensis ,Freshwater fish ,Ecology ,030108 mycology & parasitology ,Cucullanus ,biology.organism_classification ,Parasito de animal ,Diversidade ,Parasitology ,Original Article ,Species richness ,Catfish - Abstract
This study investigated the community of ectoparasites and endoparasites in Ageneiosus ucayalensis (Auchenipteridae) of a tributary from the Amazon River system, in Northern Brazil. Of 34 fish examined, 100% were parasitized by Ichthyophthirius multifiliis, Cosmetocleithrum bulbocirrus, Demidospermus sp., metacercariae of Genarchella genarchella, Clinostomum marginatum and Herpetodiplostomum sp., Procamallanus (Spirocamallanus) belenensis, Cucullanus ageneiosus and larvae of Contracaecum sp. digeneans C. marginatum and Herpetodiplostomum sp. were dominant parasite species, while I. multifiliis was the parasite with higher infection level. Such parasite species showed an aggregated dispersion, except P. (S.) belenensis, which showed a random dispersion. The Brillouin diversity (0.53 ± 0.29) was high, while evenness (0.28 ± 0.16) and species richness of parasites (3.7 ± 1.1) were low. The size of the hosts did not influence diversity, species richness and abundance of parasites. The ectoparasites were characterized by high prevalence and abundance, while endoparasites community presented low prevalence and abundance. The main factors responsible for structuring the parasite community in A. ucayalensis were mainly the behavior of this host and the availability of endoparasites infective stages in the environment. This was the first report of I. multifiliis, C. bulbocirus, Demidospermus sp., Contracaecum sp., C. marginatum, Herpetodiplostomum sp. and G. genarchella for A. ucayalensis. The presence of endohelminth larvae suggests that A. ucayalensis is part of the diet of other fish at the top of the food web in the Amazonian ecosystem studied. Made available in DSpace on 2017-08-23T15:28:14Z (GMT). No. of bitstreams: 1 CPAFAP2017Ectoparasitesandendoparasitescommunity.pdf: 1722935 bytes, checksum: 10cd0e3461c6520d9e0536a67e187bf0 (MD5) Previous issue date: 2017-08-22 more...
- Published
- 2016
12. São similares a estrutura das comunidades de parasitos deTrachelyopterus coriaceus e Trachelyopterus galeatus (Siluriformes: Auchenipteridae) na bacia amazônica?
- Author
-
Lenise Vargas Flores da Silva, Wanderson Michel de Farias Pantoja, Marcos Tavares-Dias, WANDERSON MICHEL DE FARIAS PANTOJA, UFOPA, LENISE VARGAS FLORES SILVA, CPAF-AP, and MARCOS TAVARES-DIAS, CPAF-AP. more...
- Subjects
0106 biological sciences ,0301 basic medicine ,Sympatry ,010607 zoology ,Zoology ,Ciliophora Infections ,Biology ,parasites ,01 natural sciences ,diversity ,Fish Diseases ,03 medical and health sciences ,Rivers ,infection ,Animals ,Dominance (ecology) ,Parasite hosting ,Animal parasite ,Trachelyopterus coriaceus ,Amazon ,Catfishes ,lcsh:SF1-1100 ,General Veterinary ,Ichthyophthirius multifiliis ,Amazon rainforest ,Ecology ,030108 mycology & parasitology ,biology.organism_classification ,Parasito de animal ,diversidade ,parasitos ,Amazônia ,Sympatric speciation ,auchenipterídeo ,infecção ,auchenipterid ,Species evenness ,Parasitology ,lcsh:Animal culture ,Brazil - Abstract
The aim of this study was to compare the parasite communities in two sympatric host populations, Trachelyopterus coriaceus andTrachelyopterus galeatus, which were caught in tributary of the Amazon River in Brazil. All the specimens of T. galeatusand T. coriaceus were infected by one or more parasites, such as Ichthyophthirius multifiliis, Tripartiella tetramerii, Trichodina nobilis,Cosmetocleithrum striatuli, Contracaecumsp., Cystidicoloides sp., Dadaytremoides parauchenipteri and Gorytocephalus spectabilis. Seven species were common to both host fish, and there were 1-5 parasite species per host. In both hosts, trichodinids were dominant. Aggregate dispersion of ectoparasites and endoparasites was observed, with greater aggregation among endoparasites. Only the ectoparasites species showed differences in intensity and/or abundance. However, the parasite communities of the two hosts were taxonomically similar (99%) and characterized by high prevalence and high abundance of ectoparasites, but with low diversity, prevalence and abundance of endoparasites. Trachelyopterus galeatus, the host with the larger body size, presented greater variation of Brillouin diversity and evenness, while T. coriaceus had higher Berger-Parker dominance values and total numbers of parasites. This first study on these parasites ofT. galeatus and T. coriaceus showed that the life mode, size of the hosts and the availability of infective forms of the parasites were the main factors that influenced the parasite communities structure. Resumo O objetivo deste estudo foi comparar as comunidades, prevalência, intensidade, abundância e interações parasito-hospedeiro em duas populações de hospedeiros simpatricos, Trachelyopterus coriaceus eTrachelyopterus galeatus de um tributário do sistema do Rio Amazonas, no Brasil. Todos os espécimes de T. galeatus eT. coriaceus estavam infectados por um ou mais parasitos, tais como Ichthyophthirius multifiliis, Tripartiella tetramerii, Trichodina nobilis,Cosmetocleithrum striatuli, Contracaecumsp., Cystidicoloides sp., Dadaytremoides parauchenipteri e Gorytocephalus spectabilis. Sete espécies de parasitos foram comuns para ambos os peixes hospedeiros e houve de 1-5 espécies de parasitos por hospedeiro. Em ambos os hospedeiros houve dominância de espécies de tricodinídeos. A dispersão dos ectoparasitos e endoparasitos foi agregada, mas a maior agregação foi de endoparasitos. Somente espécies de ectoparasitos mostraram diferenças na intensidade e/ou abundância. Entretanto, as comunidades parasitárias dos dois hospedeiros foram taxonomicamente semelhante (99%) e caracterizada por alta prevalência e abundância de ectoparasitos, mas com baixa diversidade, prevalência e abundância de endoparasitos. Trachelyopterus galeatus, com maior tamanho corporal, apresentou maior variação da diversidade Brillouin e uniformidade, enquanto T. coriaceus teve maiores valores de dominância de Berger-Parker e número total de parasitos. Este primeiro estudo sobre estes parasitos de T.galeatus e T. coriaceus mostrou que o modo de vida, tamanho dos hospedeiros e disponibilidade de formas infectantes de parasitos foram os principais fatores que influenciaram a estrutura das comunidades dos parasitos encontrados. more...
- Published
- 2016
13. Seasonal pattern in parasite infracommunities of Hoplerythrinus unitaeniatus and Hoplias malabaricus (Actinopterygii: Erythrinidae) from the Brazilian Amazon
- Author
-
Ligia Rigôr Neves, Marcos Sidney Brito Oliveira, Marcos Tavares-Dias, Raissa Alves Gonçalves, and MARCOS TAVARES-DIAS, CPAF-AP.
- Subjects
0301 basic medicine ,Wet season ,Trichodina ,Variação sazonal ,Parasitic Diseases, Animal ,Zoology ,Erythrinidae ,Hoplias malabaricus ,Fish Diseases ,03 medical and health sciences ,Clinostomum marginatum ,Rivers ,Amazonia ,Dry season ,Animals ,Parasite hosting ,Animal parasite ,Parasites ,biology ,Ichthyophthirius multifiliis ,030108 mycology & parasitology ,seasonal variation ,biology.organism_classification ,Parasito de animal ,Fishery ,Amazon ,Parasitology ,Seasons ,Characiformes ,Brazil - Abstract
The present study investigated the effects of seasonal variation in parasites infracommunities of Hoplerythrinus unitaeniatus and Hoplias malabaricus from a tributary of Amazon River. For H. unitaeniatus and H. malabaricus, 11 parasite species were similar, and greatest parasite richness occurred during the rainy season. Ichthyophthirius multifiliis was the dominant parasite species for both hosts. In H. unitaeniatus, infection by Whittingtonocotyle caetei, Whittingtonocotyle jeju, Urocleidoides sp. and Anacanthorus sp. was higher during rainy season. Contracaecum sp., Procamallanus (Spirocamallanus) inopinatus, Nomimoscolex matogrossensis and Gorytocephalus spectabilis showed no seasonal pattern. For H. unitaeniatus, P. pillulare, Clinostomum marginatum and Argulus pestifer occurred only during dry season, while Trichodina sp., Dolops geayi, undetermined metacercariae and Posthodiplostomum sp. occurred only during the rainy season. In H. malabaricus, the prevalence of Urocleidoides eremitus was similar during the two seasons, but abundance was higher during the rainy season. Tetrahymena sp., C. marginatum, Dendrorchis neivai, undetermined metacercariae, Posthodiplostomum sp., Genarchella genarchella, Cystidicoloides sp., G. spectabilis, D. geayi, A. pestifer and Glossiphonidae gen. sp. occurred only during the dry season. However, Contracaecum sp. and P. (S.) inopinatus occurred during both seasons, but the prevalence of P. (S.) inopinatus was higher during the rainy season. Seasonal variation in this infection levels was due to the host’s feeding behavior and habits and the availability of infectious forms of parasites with heteroxenic life cycles. The non-seasonal fluctuation detected are likely a result of the parasites biology, highly variable nature of this tributary of Amazon River and low abundance of parasites. more...
- Published
- 2016
14. Dactylogyrids (Monogenea) parasitic on cichlids from northern Brazil, with description of two new species of Sciadicleithrum and new host and geographical records
- Author
-
Marcos Tavares-Dias, Tomáš Scholz, José L. Luque, Fabiano Paschoal, and MARCOS TAVARES-DIAS, CPAF-AP.
- Subjects
0301 basic medicine ,Neotropics ,Sciadicleithrum ,Zoology ,Trematode Infections ,Fish Diseases ,03 medical and health sciences ,Cichlid ,Animal parasite ,Animals ,Araguari River ,Microscopy ,biology ,Host (biology) ,Ecology ,Cichlids ,030108 mycology & parasitology ,biology.organism_classification ,Satanoperca jurupari ,Parasito de animal ,Dactylogyridae ,Xingu River ,Platyhelminths ,Parasitology ,Crenicichla ,Brazil ,Monogenea - Abstract
Two new species of Sciadicleithrum Kritsky, Thatcher and Boeger, 1989 are described from two cichlids from the Araguarí River, State of Amapá, northern Brazil. Sciadicleithrum edgari n. sp. from Satanoperca jurupari (Heckel, 1840) differs from all congeneric species in the morphology (hook-shaped, with middle process and distally bifurcate) of the accessory piece of the male copulatory organ (MCO). Sciadiclethrum araguariensis n. sp. from Crenicichla labrina (Spix and Agassiz, 1831) can be distinguished from all other species by a Y-shaped accessory piece of MCO. In addition to the description of two new species, new host and geographical records of six dactylogyrid monogeneans from cichlid fishes are presented. more...
- Published
- 2016
- Full Text
- View/download PDF
15. Communities of parasite metazoans in Piaractus brachypomus (Pisces, Serrasalmidae) in the lower Amazon River (Brazil)
- Author
-
OLIVEIRA, M. S. B., TAVARES-DIAS, M., MARCOS SIDNEY BRITO OLIVEIRA, UFOPA, and MARCOS TAVARES-DIAS, CPAF-AP.
- Subjects
Diversity ,Peixe de água doce ,helminths ,freshwater fish ,endoparasites ,Animal parasite ,Parasito animal ,Amazon - Abstract
The aim of this study was to investigate the component community of parasite metazoans of Piaractus brachypomus in the lower Amazon River, northern Brazil. From 34 necropsied fish, 27,384 metazoan parasites were collected, such as Anacanthorus spathulatus, Mymarothecium viatorum and Notozothecium janauachensis (Monogenoidea); Spectatus spectatus and Contracaecum sp (Nematoda); Clinostomum marginatum and Dadaytrema oxycephala (Digenea); and Argulus carteri and Ergasilus sp. (Crustacea). The dominant species was S. spectatus followed by monogenoidean species, and there was aggregated dispersion of parasites, except for D. oxycephala and Contracaecum sp., which presented random dispersion. Positive correlation among the abundance of the three monogenoideans species were found, thus indicating that there was no competition between the species of these parasites on the gills of hosts. The abundances of some parasite species showed positive correlations with the size of the hosts, but the condition factor of the fish was not affected by the parasitism levels. It showed that this host had a metazoan community characterized by high species richness of metazoans, low evenness and high diversity of parasites, with prevalence of endoparasites, including larval stages. This was the first record of C. marginatum, A. carteri, Ergasilus sp. and Contracaecum sp. for P. brachypomus. more...
- Published
- 2016
16. First record in Brazil of Epistylis sp. (Ciliophora) Adhered to Argulus sp. (Argulidae), a Parasite of Hoplias aimara (Eritrhinidae)
- Author
-
CORRÊA, L. L., OLIVEIRA, M. S. B., PRESTES, L., TAVARES-DIAS, M., LINCOLN LIMA CORRÊA, UFOPA, MARCOS SIDNEY BRITO OLIVEIRA, UFOPA, LUIZA PRESTES, UFPA, and MARCOS TAVARES-DIAS, CPAF-AP.
- Subjects
Animal parasite ,Eastern Amazon ,Parasito animal ,Parasite Ecology ,Opportunistic Parasite - Abstract
This paper records the first occurrence of Epistylis sp. on the body surface of Argulus sp. parasitizing Hoplias aimara from the upper Araguari River, in the eastern Amazon region, in the north of Brazil. Of the 16 specimens of H. aimara examined, 93.7% had their pelvic, caudal and pectoral fins and tegument infested by Argulus sp. (n = 73), which in turn were infested by Epistylis sp. The specimens of Epistylis sp. from the body surface of Argulus sp. were analyzed using Scanning Electron Microscopy (SEM). The present study also identified a widening of the geographic distribution of these two species of ectoparasites to the eastern Amazon region of Brazil. more...
- Published
- 2016
17. Parasite communities of the predatory fish, Acestrorhynchus falcatus and Acestrorhynchus falcirostris, living in sympatry in Brazilian Amazon
- Author
-
HOSHINO, M. D. F. G., NEVES, L. R., TAVARES-DIAS, M., MARIA DANIELLE FIGUEIREDO GUIMARÃES HOSHINO, UNIFAP, LÍGIA RIGÔR NEVES, UNIFAP, and MARCOS TAVARES-DIAS, CPAF-AP.
- Subjects
helminths ,Aggregation ,Peixe de água doce ,freshwater fish ,infection ,Animal parasite ,Parasito animal ,ectoparasites - Abstract
This study investigated the parasite communities of wild Acestrorhynchus falcatus and Acestrorhynchus falcirostris populations living in sympatry in Brazilian Amazon. In these two hosts, a total of 12 parasite species e 1-9 parasite species were found per fish, and 10 of these species are metazoans. Eight species of parasites were common to both host species and four of them exhibited differences in abundance and/or prevalence. Parasite communities of the hosts were taxonomically similar (83%) and composed of both ectoparasites and endoparasites, and characterized by high prevalence and high abundance of endoparasites and an aggregated dispersion pattern. For A. falcirostris, the dominant parasite was Ichthyophthirius multifiliis, and for A. falcatus, it was Piscinoodinium pillulare. Shannon diversity and Berger-Parker dominance were similar for both hosts, while the parasites species richness and evenness showed differences influenced by the ectoparasites species. These two populations of hosts that inhabited the same geographical area had different sizes, but were exposed to the same infective stages, and acquired qualitatively and quantitatively similar endoparasites community, thus indicating that the amounts and types of prey congeneric that they were eating were similar. Therefore, the overlap in the same occurrence area play an important role in the parasite communities to these phylogenetically related hosts. more...
- Published
- 2016
18. Hematological alterations in Astyanax altiparanae (Characidade) caused by Lernaea cyprinacea (Copepoda: Lernaeidae)
- Author
-
Marcos Tavares-Dias, Paulo S. Ceccarelli, Edson A. Adriano, Lincoln Lima Corrêa, LINCOLN L. CORRÊA, UFOPA, MARCOS TAVARES-DIAS, CPAF-AP, PAULO S. CECCARELLI, CEPTA, and EDSON A. ADRIANO, UNICAMP.
- Subjects
0301 basic medicine ,Male ,Veterinary medicine ,040301 veterinary sciences ,Infestation ,Ectoparasitic Infestations ,Aquatic Science ,Biology ,Hematocrit ,medicine.disease_cause ,0403 veterinary science ,Copepoda ,03 medical and health sciences ,Fish Diseases ,hematology ,parasitic diseases ,medicine ,Parasite hosting ,Animals ,Animal parasite ,Hematologia ,Ecology, Evolution, Behavior and Systematics ,Ectoparasitic infestation ,medicine.diagnostic_test ,Ecology ,Characidae ,04 agricultural and veterinary sciences ,030108 mycology & parasitology ,medicine.disease ,biology.organism_classification ,Crustacean ,Parasito de animal ,Infestação ,Continental fish ,Ectoparasite ,Female ,Integument ,Hemoglobin ,Brazil - Abstract
This study describes the hematological alterations in Astyanax altiparanae associated with infestation with Lernaea cyprinacea. The study was carried out in a lagoon of the Mogi- Guaçu River, in the municipality of Pirassununga, in the state of São Paulo, Brazil. Of 46 fish examined, 45.6% had their integument infested by L. cyprinacea, with a mean intensity of 4.9 parasites per fish and a mean abundance of 2.2, giving a total of 139 recovered crustaceans. The abundance of L. cyprinacea correlated positively with the length and weight of the hosts, and the intensity of infestation was higher in female hosts. Macroscopic observation of lesions associated with the parasite showed a severe inflammatory reaction around the site of attachment of L. cyprinacea, associated with a lower relative condition factor and blood parameters. The hematocrit, number of red blood cells and thrombocytes were higher in non-parasitized than in parasitized fish. However, the hemoglobin concentration, hematimetric indices and the number of white blood cells were not influenced by infestation. more...
- Published
- 2016
19. Performance, parasitic infections, hematology and hepatic histology of Colossoma macropomum (tambaqui) fed on homeopathic product
- Author
-
PINHEIRO, D. A., CAVERO, B. A. S., VARGAS, L., BRACCINI, G. L., YOSHIOKA, E. T. O., OLIVEIRA, M. S. B., TAVARES-DIAS, M., DOUGLAS ANADIAS PINHIO, BRUNO ADAN SAGRATZKI, LAURO VARGAS, GRACIELA LUCCA BRACCINI, ELIANE TIE OBA YOSHIOKA, CPAF-AP, MARCOS SIDNEY BRITO OLIVEIRA, and MARCOS TAVARES-DIAS, CPAF-AP. more...
- Subjects
Sangue ,Fish farming ,Homeopatia ,Protozoário ,blood ,Animal parasite ,Homeopathy ,Parasito animal ,Protozoa ,Monogenea ,Piscicultura - Published
- 2015
20. Distribution pattern of crustacean ectoparasites of freshwater fish from Brazil
- Author
-
TAVARES-DIAS, M., DIAS-JÚNIOR, M. B. F., FLORENTINO, A. C., SILVA, L. M. A., CUNHA, A. C. da, MARCOS TAVARES-DIAS, CPAF-AP, MIGUEL BENEDITO FERREIRA DIAS-JÚNIOR, UNIFAP, Macapá, AP, ALEXANDRO CEZAR FLORENTINO, UNIFAP, Macapá, AP, LUIS MAURÍCIO ABDON SILVA, IEPA, Macapá, AP, and ALAN CAVALCANTI DA CUNHA, Laboratório de Química, Saneamento e Modelagem de Sistemas Ambientais - UNIFAP, Macapá, AP. more...
- Subjects
Copepoda ,Host ,Branchiura ,Animal parasite ,Parasito animal ,Amazon ,Hospedeiro ,Isopoda - Abstract
The purpose of this study was to use the informations relating to parasite crustaceans species that was published over the course of one century (1913 to 2013), in order to search for infestation and distribution patterns among these ectoparasites in Brazilian freshwater fish species. This search was carried out on 445 samples of 119 host fish of 27 families within the orders Characiformes, Perciformes, Clupeiformes, Mugiliformes, Osteoglossiformes, Symbranchiformes, Tetraodontiformes and Siluriformes from various regions of Brazil. We organized different host-parasite systems into matrices grouping species at different taxonomic and infestation levels and according to host parameters. Five families of parasites (Ergasilidae, Argulidae, Lernaeidae, Lernaeopodidae and Cymothoidae) distributed into 76 species of 27 genera were analyzed in the host samples, which presented dominance of Ergasilidae species, mainly from the genus Ergasilus. Some crustaceans are host and site-specific, especially in relation to fish in particular habitats and lifestyles (e.g. Perulernaea gamitanae, Anphira branchialisand Riggia paranensis), while other parasites frequently have no preference (e.g. Lernaea cyprinaceaand Braga patagonica). We found broadly similar distribution patterns for some crustacean species among the different localities, whereas other species showed well-defined geographical patterns, and these findings were discussed. more...
- Published
- 2015
21. Parasitismo em tambatinga (Colossoma macropomum x Piaractus brachypomus, Characidae) cultivados na Amazônia, Brasil
- Author
-
DIAS, M. K. R., NEVES, L. R., MARINHO, R. das G. B., PINHEIRO, D. A., TAVARES-DIAS, M., MÁRCIA KELLY REIS DIAS, LIGIA RIGÔR NEVES, RENATA DAS GRAÇAS BARBOSA MARINHO, DOUGLAS ANADIAS PINHEIRO, and MARCOS TAVARES-DIAS, CPAF-AP. more...
- Subjects
Agregação ,Aggregation ,Peixe de água doce ,Animal parasite ,Variety ,Fresh water fish ,Parasito animal ,Variedade ,Sanidade animal ,animal health - Abstract
Os estudos sobre os parasitos e doenças parasitárias são de grande interesse para a piscicultura, uma vez que podem afetar o crescimento dos peixes. O objetivo deste estudo foi investigar a fauna parasitária e relação parasito-hospedeiro em Colossoma macropomumx Piaractus brachypomus(tambatinga) de 10 pisciculturas do estado do Amapá, Amazônia. Dos 503 peixes examinados, 63,1% estavam parasitados e 49.299.189 parasitos foram coletados, tais como Ichthyophthirius multifiliis, Piscinoodinium pillulare, Trichodinasp., Tetrahymenasp., Anacanthorus spathulatus, Linguadactyloides brinkmanni, Mymarothecium boegeri, Notozothecium janauachensis, Procamallanus (Spirocamallanus)inopinatus, Neoechinorhynchus buttneraee Perulernaea gamitanae. Porém, a dominância foi de I. multifiliis, seguida de P. pillularee monogenoideas, parasitos que apresentaram padrão de dispersão agregado juntamente com P. gamitanae. Houve correlação positiva do comprimento dos hospedeiros com a prevalência parasitária total, bem como do tamanho dos peixes com a abundância de I. multiliis, P. pillulare, monogenoideas e P. gamitanae, mas os níveis infecção não influenciaram o fator de condição relativo dos hospedeiros. A ocorrência de ectoparasitos foi favorecida pelo manejo e pobre condição sanitária das pisciculturas, mas a presença de espécies de endoparasitos foi devido ao abastecimento dos viveiros com água provenientes de corpos de água naturais. Este foi primeiro relato de I. multiliis, P. pillulare, Trichodinasp., Tetrahymenasp., A. spathulatus, N. janauachensis, N. buttneraee P.(S.) inopinatus para tambatinga no Brasil. more...
- Published
- 2015
22. Parasitic infections in two Benthopelagic fish from Amazon: the Arowana Osteoglossum bicirrhosum (Osteoglossidae) and Oscar Astronotus ocellatus (Cichlidae)
- Author
-
TAVARES-DIAS, M., SOUSA, T. J. S. M., NEVES, L. R., and MARCOS TAVARES DIAS, CPAF-AP.
- Subjects
Helminthes ,freshwater fish ,Peixe de água doce ,Animal parasite ,Fator de condição ,Parasito de animal ,condition factor - Abstract
The parasitic fauna of wild Osteoglossum bicirrhosum from central Amazon (Brazil) and wild Astronotus ocellatus from eastern Amazon (Brazil) as well as the host-parasite relationship were evaluated. 87.5% O. bicirrhosum were parasitized only by Gonocleithrum aruanae (Monogenoidea). 92.8% A. ocellatus were parasitized by Ichthyophthirius multifiliis (Ciliophora), Gussevia asota (Monogenoidea), Posthodiplostomum sp. metacercariae (Diplostomidae), Procamallanus inopinatus adults and Contracaecum larvae (Anisakidae). High levels of infection by G. aruanae occurred in O. bicirrhosum while in A. ocellatus the highest levels of infection were caused by helminthes ectoparasites such as G. asota, and endoparasites such as Posthodiplostomum sp., P. inopinatus and Contracaecum sp. There was a significant (p>0.05) negative correlation between the intensity of helminthes species and the relative condition factor (Kn) from A. ocellatus, indicating that these parasites are pathogenic for hosts. The parasite fauna of O. bicirrhosum was scarce, while the parasites for A. ocellatus were mainly helminthes species, including adults and larval forms. Such differences on parasites fauna of both omnivore hosts may due to their history life as well as environmental and biological factors. more...
- Published
- 2014
23. Ecology of parasites of Metynnis lippincottianus (Characiformes: Serrasalmidae) from the Eastern Amazon Region, Macapá, State of Amapá, Brazil
- Author
-
TAVARES-DIAS, M., HOSHINO, M. D. F. G., and MARCOS TAVARES-DIAS, CPAF-AP.
- Subjects
Amazonia ,Animal parasite ,Characiforme ,Parasito animal ,Amazon ,Parasite infracommunitie - Abstract
The present study provides the first investigation on the ecological aspects of the parasites M. lippincottianus from the Amazonian basin, as well as the parasite-host relationship. 76 out of the examined fish (98.7%) were parasitized by at least one species of parasites. A total of 8,774 parasites were collected, being Ichthyophthirius multifiliis,Anacanthorus jegui,Dadayius pacupeva, Digenea gen. sp. (metacercariae), Procamallanus (Spirocamallanus)inopinatus, Procamallanus (Spirocamallanus) sp., Spinoxyuris oxydoras, Contracaecum sp. larvae, Dolops longicaudaand Hirudinea gen. sp. Ichthyophthirius multifiliiswas the dominant species, followed by A. jegui. Among the endoparasites, S. oxydoras andD. pacupevawere predominant. The mean diversity of parasites was HB = 0.96 ± 0.32 and there was aggregate distribution pattern. A positive correlation of body weight with the abundance of I. multifiliisand S. Oxydoraswas observed, whereas a negative correlation of body weight with abundance of the Contracaecum sp. larvae was found. The relative condition factor (Kn) was not negatively affected by parasites, and a positive correlation between Kn and abundance of I. multifiliis, S. oxydoras andD. pacupevawas found. This study is the first one to record I. multifiliis, D. longicauda and A. jeguiparasitizing M. lippincottianus, as well as the first record of D. pacupeva and S. oxydorasin the Amazonas river system. Made available in DSpace on 2015-02-27T22:06:42Z (GMT). No. of bitstreams: 1 CPAFAP2014EcologyofparasitesofMetynnis.pdf: 246090 bytes, checksum: 500228016c5a93a3ac553bd440059ea1 (MD5) Previous issue date: 2015-02-24 more...
- Published
- 2014
24. Paratrichodina africana (Ciliophora: Trichodinidae) of wild and cultured Nile tilapia in the Northern Brazil
- Author
-
TAVARES-DIAS, M., MARCHIORI, N. da C., MARTINS, M. L., and MARCOS TAVARES DIAS, CPAF-AP.
- Subjects
Peixe de água doce ,Animal parasite ,Fresh water fish ,Parasito animal - Abstract
The present work morphologically characterizes Paratrichodina africana from the gills of wild and farmed Nile tilapia from Northern Brazil (eastern Amazonia). Ninety fish were captured for parasitological analysis in Macapá, State of Amapá, from a wetland area bathed by the Amazon River commonly called ?Ressaca do Zerão? (n = 52), as well as from a local fish farm (n = 38). Wet smears of the skin and gills of the captured fish were air dried at room temperature and impregnated with silver nitrate by Klein?s method for posterior examination of the adhesive disc structures. Total prevalence of parasitism was 16.6% (23% in fish from wetland and 7.8% in farmed fish). Characterized as a small‑sized trichodinid, it presented the following measures: 33.2 ± 4.7 μm body diameter, 17.5 ± 2.1 μm adhesive disc, 10.0 ± 0.9 μm denticulate ring, and 22.6 ± 2.0 denticles. Paratrichodina africana reported in this study strongly resembles those described for other localities, but it differs by presenting greater body length. This is the fourth report of P. africana parasitizing a host fish. more...
- Published
- 2013
25. Parasitic fauna in hybrid tambacu from fish farms
- Author
-
SILVA, R. M., TAVARES-DIAS, M., DIAS, M. W. R., DIAS, M. K. R., MARINHO, R. das G. B., and MARCOS TAVARES DIAS, CPAF-AP.
- Subjects
Piaractus mesopotamicus ,Peixe de água doce ,Animal parasite ,Native fish ,Parasito animal ,Ichthyophthirius multifiliis ,Peixe nativo ,Colossoma macropomum - Abstract
The objective of this work was to evaluate the parasitic fauna of hybrid tambacu (Colossoma macropomum x Piaractus mesopotamicus) from fish farms and the host; parasite relationship. A hundred and fourteen fish were collected from four fish farms in Macapá, in the state of Amapá, Brazil, 80.7% of which were infected by: Ichthyophthirius multifiliis (Ciliophora); Piscinoodinium pillulare (Dinoflagellida); Anacanthorus spatulatus, Notozothecium janauachensis, and Mymarothecium viatorum (Monogenoidea); Neoechinorhynchus buttnerae (Acanthocephala); Cucullanus colossomi (Nematoda); Perulernaea gamitanae (Lernaeidae); and Proteocephalidae larvae (Cestoda). A total of 8,136,252 parasites were collected from the examined fish. This is the first record of N. buttnerae, C. colossomi, N. janauachensis, M. viatorum, and Proteocephalidae for hybrid tambacu in Brazil. Ichthyophthirius multifiliis was the most prevalent parasite, whereas endohelminths were the less. A positive correlation was observed between number of I. multifiliis and total length and weight of fish, as well as between number of P. gamitanae and total length. The infection by I. multifiliis had association with the parasitism by Monogenoidea. Low water quality contributes to high parasitism of hybrid tambacu by ectoparasites, which, however, does not influence the relative condition factor of fish. more...
- Published
- 2013
26. Protozoan and metazoan parasites of Nile tilapia Oreochromis niloticus cultured in Brazil
- Author
-
Renata Marinho Gb, D. Montagner, Marcos Tavares-Dias, Márcia Dias Rd, Wanderson Pantoja Mf, Ligia Neves R, WANDERSON MICHEL FARIAS PANTOJA, Estagiário CPAF-AP, RENATA DAS GRAÇAS BARBOSA MARINHO, Unifap, DANIEL MONTAGNER, CPAF-AP, MARCOS TAVARES DIAS, CPAF-AP., MÁRCIA KELLY REIS DIAS, Unifap, and LIGIA NEVES, Estagiária CPAF-AP more...
- Subjects
Gill ,Trichodina ,Parasito animal ,Fish farming ,prevalence ,Zoology ,Aquatic Science ,Freshwater fishes ,parasites ,Digenea ,Freshwater fishe ,Nile tilapia ,Animal parasite ,lcsh:Veterinary medicine ,General Veterinary ,biology ,Ichthyophthirius multifiliis ,Peixe de água doce ,Oreochromis niloticus ,biology.organism_classification ,Dactylogyridae ,Fishery ,Oreochromis ,lcsh:SF600-1100 ,Animal Science and Zoology - Abstract
Objective. This study describes the parasitic fauna and relative condition factor (Kn) in Nile tilapia Oreochromis niloticus L. (Cichlidae) from fish farms in the State of Amapá. Material and methods. 123 fish from four fish farms in the state of Amapá, Brazil were necropsied for parasitological and Kn analysis. Results. 64.2% of the examined fish, had the gills infected with Cichlidogyrus tilapiae Paperna, 1960 (Monogenoidea: Dactylogyridae); Ichthyophthirius multifiliis Fouquet, 1876 (Protozoa: Ciliophora), Trichodina Ehrenberg, 1830 and Paratrichodina africana Kazubski & El-Tantawy, 1986 (Protozoa: Trichodinidae). The highest prevalence found corresponded to Monogenoidea C. tilapiae while the lowest corresponded to Trichodinidae. However, I. multifiliis was the parasite that presented the greatest intensity and abundance. The differences found in the infection rates of the different fish farms due to causes further discussed. The parasitism did not influence the relative condition factor (Kn) of fish. This was the first record of P. africana in Brazil and occurred in the Eastern Amazon. Conclusions. In Brazil, Lamproglena sp. is an emerging parasite in the Southern and Southeastern regions, but this crustacean was not found in the Nile tilapia in the State of Amapá. The parasitic infections in Nile tilapia farmed in Brazil are caused by protozoan, monogenoidea, crustacea and digenea species, and the regional differences on their prevalence and intensity rates are discussed in this study. more...
- Published
- 2012
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.