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278 R. S. BENITEZ & Y. R. SUAREZ the Sea, 39: 175-192. Pauly, D. 1983. Some simples methods for the assessment of tropical fish stocks. FAO Fisheries Technical Paper, 234: 1-52. Piana, P. A., Gomes, L. C., & Cortez, E. M. 2006. Factors influencing Serrapinnus notomelas (Characiformes: Characidae) populations in upper Parana river floodplain lagoons. Neotropical Ichthyology, 4(1): 81-86. Reznick, D. N., Butler, M. J., Rodd, F. H. & Ross, P. 1996. Life-History evolution in guppies (Poecilia reticulate) 6. Differential Mortality as a mechanism for natural Selection. Evolution, 50(4): 1651-1660. Silvano, J., Oliveira, C. L. C., Fialho, C. B. & Gurgel, H. C. B. 2003. Reproductive period and fecundity of Serrapinnus piaba (Characiade: Ceirodontinae) from the rio Ceará Mirim, Rio Grande do Norte, Brasil. Neotropical Ichthyology, 1(1): 61-66. Strauss, R. E. 1990. Predation and life-history variation of Poecilia reticulata (Cyprinodontiformes: Poeciliidae). Environmental Biology of Fishes, 27: 121- 130. Súarez, Y. R., Valério, S. B., Tondato, K. K., Ximenes, L. Q. L. & Felipe, T. R. A. 2007. Determinantes ambientais da ocorrência de espécies de peixes em riachos de cabeceira da bacia do rio Ivinhema, Alto Rio Paraná. Acta Scientiarum, Biological Sciences, 19(2): 145-150. Taylor, C. C. 1958. Cod growth and temperature. Journal du Conseil International pour L'Ex-ploration de la Mer, 23: 366 370. Vari, R. P. & Malabarba, L. R. 1998. Neotropical Ichthyology: An Overview. Pp. 1-12. In: Malabarba, L. R., Reis, R. E., Vari, R., Lucena, Z. M. S. & Lucena, C. A. S. (Eds.). Phylogeny and Classification of Neotropical Fishes. 1 ed. Porto Alegre, Brasil: EDIPUCRS, 603 p. Received April 2009 Accepted July 2009 Published online August 2009 Pan-American Journal of Aquatic Sciences (2009), 4(3): 271-278
Scientific Note New records of the brachyuran crabs Hepatus pudibundus (Aethridae) and Persephona mediterranea (Leucosiidae) in their southernmost Western Atlantic distribution GASTÓN MARTÍNEZ 1 , FABRIZIO SCARABINO 1, 2 & ESTELA DELGADO 3 1 Dirección Nacional de Recursos Acuáticos, Constituyente 1497, P.O. Box 11200, Montevideo, URUGUAY. Email: gmartinez@dinara.gub.uy 2 Museo Nacional de Historia Natural y Antropología, C. C. 399, P.O. Box 11.000, Montevideo, URUGUAY. Email: fscara@gmail.com 3 Instituto de Investigaciones Pesqueras, Facultad deVeterinaria. Tomás Basañez 1160, P.O. Box 11300. Montevideo, URUGUAY. Email: estela@fcien.edu.uy Abstract. New findings as well as biological data on the presence of the brachyurans Hepatus pudibundus and Persephona mediterranea in the Uruguayan shelf are recorded and discussed. Both species have their southernmost limits there, where their occurrences have increased in the last 10 years. Keywords: Uruguayan shelf, subtropical species, Decapoda, Brachyura. Resumen. Nuevos registros de los cangrejos braquiuros Hepatus pudibundus (Aethridae) y Persephona mediterranea (Leucosiidae) en el extremo sur de su distribución en el Atlántico Occidental. Se registran y discuten nuevos hallazgos así como información biológica sobre la presencia de los cangrejos braquiuros Hepatus pudibundus y Persephona mediterranea en la plataforma uruguaya. Ambas especies tienen su límite sur de distribución aquí, donde su ocurrencia ha aumentado en los últimos 10 años. Palabras clave: Plataforma uruguaya, especies subtropicales, Decapoda, Brachyura. Living mostly in tropical waters, the brachyuran crabs of the families Aethridae and Leucosiidae are very scarcely represented south of Santa Catarina State, Brazil (28ºS) (Zolessi & Philippi 1995, Melo 1996, Spivak 1997, Boschi 2000). Hepatus pudibundus (Dana, 1851) (Brachyura, Aethridae) (see Ng et al. 2008) is found from Guinea to southern Africa in the East Atlantic Ocean; and from Georgia (USA) to Rio Grande do Sul (Brazil) in the West Atlantic Ocean (Melo 1996). Juanicó (1978) registered the first and yet only detailed record for Uruguayan waters. The geographic distribution range for Persephona mediterranea (Herbst, 1794) (Brachyura, Leucosiidae) is from New Jersey (USA) to Uruguay (Coelho & Torres 1980, Bordin 1987, Melo 1996). However, these reports did not provide detailed data about the material collected in Uruguayan waters. For both species there is no other available information on their southernmost Western Atlantic distribution. Here we report and discuss new findings of these species in Uruguayan waters based on several sources, including benthic surveys and occasionally collected material washed ashore. The first source includes a) fishing trip (June 2003) using a clam dredge, b) scientific survey using a beam trawl (November 2006) and a Spatangue dredge (April 2007) and c) fishing (October 2006) and scientific survey (January 2007) using a shrimp trawl. Incidentally captured specimens during the fisheries monitoring program of DINARA (Dirección Nacional de Recursos Acuáticos) (December 2002 and April 2007) using an Engel Pan-American Journal of Aquatic Sciences (2009), 4(3): 279-282
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