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Made available in DSpace on 2022-04-29T08:36:52Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) The life history traits of the snapping shrimp Alpheus carlae were investigated. We evaluated the relative growth, morphological sexual maturity, sexual dimorphism, handedness, fecundity, and egg volume. Sampling was performed monthly in an estuarine region of Cananéia, in the south-eastern coast of Brazil. The following structures were measured to perform the relative growth analysis: length of carapace and second pleonal pleuron, length, width and height of major cheliped propodus, and length of appendix interna and appendix masculina. Juveniles and adults males and females have different growth patterns, indicating distinct strategies of energy allocation. The estimated carapace length at the onset of morphological sexual maturity of females and males was 5.6 mm and 6.2 mm, respectively. The sexual dimorphism of specific body structures was evident, mainly in the appendix interna of females and major cheliped of males. There was no evidence of handedness in females or males. The mean fecundity of females was 364 ± 204 eggs (mean ± SD) eggs and was positively correlated with the carapace length. The egg volume differed between developmental stages I and II, and I and III, with an overall volume increase of 73.23% and 95.45%, respectively. The results contribute to the knowledge about A. carlae and its life history in natural environment. Laboratory of Biology of Marine and Freshwater Shrimp (LABCAM) Faculty of Sciences Department of Biological Sciences São Paulo State University (UNESP) Laboratory of Biology of Marine and Freshwater Shrimp (LABCAM) Faculty of Sciences Department of Biological Sciences São Paulo State University (UNESP) CNPq: 143966/2018-9 FAPESP: 2019/07247-8

Moraes, Isabela R. R., Bergamasco, Giovanna R., Santos, Rafael C., Antunes, Mariana, Soledade, Guidomar O., Costa, Rogerio C., Castilho, Antonio L. (2020): New record of the sponge-dwelling shrimp Typton distinctus Chace, 1972 (Decapoda: Caridea: Palaemonidae) in São Paulo State, Brazil. Zootaxa 4763 (3): 444-446, DOI: 10.11646/zootaxa.4763.3.10

Typton distinctus Chace, 1972 (Figure 1B, C) Typton distinctus��� Chace 1972: 49, figs. 13, 14; Abele & Kim 1986: 17, 189, figs. d���g; Camp 1998: 140; Ramos-Porto & Coelho 1998: 340; Coelho et al. 2006: 51; Duris et al. 2009: 1056; Souza et al. 2011: 45; Vieira et al. 2012: 31; Pachelle et al. 2015: 319. Typton carneus ��� Holthuis, 1951 pro parte: 162, pl. 51, figs. b���d, f���j, m���o [not T. carneus Holthuis, 1951, pl. 51, figs a, e, k, l]. Typton sp.��� Coelho & Ramos-Porto, 1972: 146. Material examined: 1 male (Carapace Length: 2.37 mm), Cais do Porto in Itagu�����Ubatuba, 23��27���05��� S 45��02���48��� W, Coll. Moraes & Santos, January/2019, MZUSP 40095; 1 female (Carapace Length: 1.53 mm), Cais do Porto���Ubatuba, 23��27���05��� S 45��02���48��� W, Coll. Moraes & Santos, March/2019, MZUSP 40096. Material not deposited into the Museum can be found in the Biological collection from S��o Paulo State University���Zoology Department, Botucatu-SP: 2 males, 1 female, 1 ovigerous female (Carapace Length Size: Size range: 1.53 ��� CL ��� 2.71 mm. Mean CL = 2.30 �� 0.47 mm), 23��27���05��� S 45��02���48��� W,, Cais do Porto���Ubatuba, 23��27���05��� S 45��02���48��� W, Coll. Moraes & Santos, January/2019. Description: For original descriptions and illustrations see Chace (1972); additional figures see Holthuis (1951) as Typton carneus pl. 51. Distribution: Western Atlantic: USA (Florida), Mexico (Bah��a de la Ascensi��n), Cuba (Los Arroyos), Brazil (Pernambuco, Rio de Janeiro, S��o Paulo) (Camp et al. 1998; Chace 1972; Coelho-Filho 2006; Pachelle et al. 2015; present study). Remarks: The second pair of pereiopods developed is a taxonomic characteristic of Palaemonidae shrimps, and was recognized as the most remarkable morphological feature of T. distinctus. The movable finger forms a pointed hook twist- ed into plane nearly perpendicular to that of palm (Chace, 1972) (Figure 2B, C). Pachelle et al. (2015) described some additional morphological features used to distinguish T. distinctus from a very similar conspecific, T. carneus: rostrum not ���deepening��� near midlength, the less produced ventral margin of the major chela carpus, and the mandible with a reduced incisor process. All characters were observed in our material and corroborate its identification as T. disctinctus. Despite being recognized as ���sponge-dwelling shrimps���, the Typton genera does not present a species-specific relationship with any demosponges and can be found in association with many species of this host. In S��o Paulo state, T. fapespae has been reported living inside Mycala angulosa (Almeida et al. 2014), and in the present study, T. distintus was found in Dragmacidon reticulatus. Typton distinctus has also been found in association with other sponges from the Tedania genus. Another important aspect of this relationship is the shrimp���s intense orange-red color that matches its sponge host, which has already been observed in other shrimp/sponge associations. Therefore, despite not being a specific relationship, the color criteria must be carefully observed when analyzing these materials. The distribution of shrimps among sponge-hosts suggests that Typton shrimps actively prevent colonization by conspecifics in their sponges, protecting their resources and reducing damage to the hosts, as they are adapted to consuming spongy tissues and sequestering their host pigments (Ďuri�� et al. 2011). This new register in S��o Paulo state and the characterization of the host and shrimp provides a new perspective for studies focused on characterizing the type of symbiosis present between pontoniinaes and demosponges., Published as part of Moraes, Isabela R. R., Bergamasco, Giovanna R., Santos, Rafael C., Antunes, Mariana, Soledade, Guidomar O., Costa, Rogerio C. & Castilho, Antonio L., 2020, New record of the sponge-dwelling shrimp Typton distinctus Chace, 1972 (Decapoda: Caridea: Palaemonidae) in S��o Paulo State, Brazil, pp. 444-446 in Zootaxa 4763 (3) on pages 444-445, DOI: 10.11646/zootaxa.4763.3.10, http://zenodo.org/record/3762002, {"references":["Chace, F. A. (1972) The shrimps of the Smithsonian-Bredin Caribbean Expeditions with a summary of the West Indian shallowwater species (Crustacea: Decapoda: Natantia). Smithsonian Contributions to Zoology, 98, 1 - 179. https: // doi. org / 10.5479 / si. 00810282.98","Camp, D. K., Lyons, W. G. & Perkins, T. H. (1998) Checklists of selected shallow-water marine invertebrates of Florida. Technical Report. Florida Marine Research Institute, St. Petersburg, Florida, 238 pp.","Coelho, P. A., De Almeida, A. O., De Souza-Filho, J. F., Bezerra, L. E. A. & Giraldes, B. W. (2006) Diversity and distribution of the marine and estuarine shrimps (Dendrobranchiata, Stenopodidea and Caridea) from North and Northeast Brazil. Zootaxa, 1221 (1), 41 - 62. https: // doi. org / 10.11646 / zootaxa. 1221.1.5","Pachelle, P. P. G., Anker, A. & Tavares, M. (2015) New and additional records of the sponge shrimp genus Typton Costa, 1844 (Decapoda: Palaemonidae) from the Brazilian coast. Papeis Avulsos de Zoologia, 55, 317 - 322. https: // doi. org / 10.1590 / 0031 - 1049.2015.55.22","Holthuis, L. B. (1951) A General Revision of the Palaemonidae (Crustacea Decapoda Natantia) of the Americas. I. the Subfamilies Euryrhynchinae and Pontoniinae. Allan Hancock Foundation Publications, 11, 1 - 332.","Coelho-Filho, P. A. (2006) Checklist of the Decapoda (Crustacea) from the outer continental shelf and seamounts from Northeast of Brazil - REVIZEE Program (NE III). Zootaxa, 1184 (1), 1 - 27. https: // doi. org / 10.11646 / zootaxa. 1184.1.1","Almeida, A. O., Anker, A. & Mantelatto, F. L. (2014) A new snapping species of the shrimp genus Typton Costa, 1844 (Decapoda: Palaemonidae) from the coast of Sao Paulo, southeastern Brazil. Zootaxa, 3835 (1), 110 - 120. https: // doi. org / 10.11646 / zootaxa. 3835.1.6","Duris, Z., Horka, I., Juracka, P. J., Petrusek, A. & Sandford, F. (2011) These squatters are not innocent: the evidence of parasitism in sponge-inhabiting shrimps. In: Zilberstein, D. (Ed.), PLoS ONE, 6, pp. e 21987. https: // doi. org / 10.1371 / journal. pone. 0021987"]}

The population structure of the penaeidean shrimp Xyphopenaeus kroyeri was studied in Ubatuba Bay, Ubatuba, São Paulo, Brazil. The period and site of juvenile recruitment were monitored using a monthly sampling design with eight fixed areas (transects) from September 1995 to August 1996. The population structure was assessed using size frequency distributions (based on carapace length) for each month and sampling area. Females were significantly larger than males, suggesting a differential growth between sexes. The very low occurrence of large adults in the Bay can be related to offshore migration for reproduction. Recruitment occurred throughout the year, with a peak during the summer, when the highest recruitment rates were obtained along inshore transects. The present investigation revealed valuable information on the biology of the species mainly in the study region, which is considered a nursery ground for juveniles of X. kroyeri. The species showed an important variation from the typical life cycle that it is assumed to hold over its entire range and X. kroyeri should be classified as having a life cycle different from that proposed previously in the literature, i.e. the juveniles prefer inshore areas instead of estuaries. Some suggestions for the seabob fishery management are proposed as an alternative for minimising the impact during the harvest period and adjusting the protection schedule., La estructura de una población del camarón Xiphopenaeus kroyeri en la Bahía de Ubatuba, Ubatuba, en Brasil, fue estudiada, con énfasis en el periodo y área de reclutamiento de juveniles. La estructura de la población fue monitoreada a través de muestreos mensuales en ocho áreas diferentes (transectos) de la Bahía, entre septiembre de 1995 y agosto de 1996. La estructura de la población fue determinada por medio de la distribución de las frecuencias de talla (basada en la longitud del cefalotórax) para cada mes y área muestreadas. Las hembras alcanzaron mayores tallas que los machos sugiriendo un crecimiento diferencial entre sexos. La ocurrencia muy baja de adultos de mayor tamaño en la bahía se puede relacionar con la migración para la reproducción mar adentro. El reclutamiento ocurrió preferentemente en los transectos costeros y en casi todos los meses, con un pico durante el verano. Los resultados muestran que la Bahía de Ubatuba puede ser considerada como una zona de cría de los juveniles de Xiphopenaeus kroyeri. Se propone un nuevo tipo de ciclo vital para esta especie, en el que, a diferencia de lo propuesto en trabajos anteriores, los juveniles prefieren las áreas costeras en lugar de las estuáricas. Se hacen algunas sugerencias para la actividad pesquera sobre esta especie de camarón a fin de reducir al mínimo el impacto durante el período de pesca.