Population and reproductive features of the freshwater shrimp Macrobrachium jelskii (Miers, 1877) from São Paulo State, Brazilb - doi: 10.4025/actascibiolsci.v35i3.15815

Emerson Contreira Mossolin; Douglas Fernando Peirò; Mariana Oliveira Rossingnoli; Livia Pinto Rajab; Fernando Luis Medina Mantelatto

doi:10.4025/actascibiolsci.v35i3.15815

Population and reproductive features of the freshwater shrimp Macrobrachium jelskii (Miers, 1877) from São Paulo State, Brazilb - doi: 10.4025/actascibiolsci.v35i3.15815

Emerson Contreira Mossolin Universidade Federal de Goiás / Universidade de São Paulo
Douglas Fernando Peirò Universidade de São Paulo / Centro Universitário de Araraquara
Mariana Oliveira Rossingnoli Centro Universitário de Araraquara
Livia Pinto Rajab Centro Universitário de Araraquara
Fernando Luis Medina Mantelatto Universidade de São Paulo

DOI: https://doi.org/10.4025/actascibiolsci.v35i3.15815

Keywords: Crustacea, Decapoda, fecundity, Palaemonidae, reproduction

Abstract

The aim of this study was to describe the population structure and reproduction of Macrobrachium jelskii from a stream in the central region of São Paulo State. A total of 1,215 specimens was collected monthly during one year (February 2008 to January 2009), being 535 males, 578 females and 102 juveniles. The overall sex-ratio was not significantly different from the expected 1:1, but has significantly differed in some months. A total of 136 ovigerous females were collected and the reproductive period was continuous with peak of occurrence on the hottest months. An increase in juveniles following the highest frequency of ovigerous females was observed and characterized the recruitment period. The fecundity was low and varied from 1 to 56 eggs per female. The biological profile observed here matched, in general aspects, with the pattern developed by tropical and subtropical inland populations, with some particularities related with environmental characteristics.

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Author Biography

Fernando Luis Medina Mantelatto, Universidade de São Paulo

Tem experiência na área de Zoologia, Ecologia e Biologia Marinha, com ênfase em Morfologia, Sistemática e Ecologia dos Grupos Recentes, atuando especificamente nos temas voltados aos crustáceos decápodes.

Published

2013-04-19

How to Cite

Mossolin, E. C., Peirò, D. F., Rossingnoli, M. O., Rajab, L. P., & Mantelatto, F. L. M. (2013). Population and reproductive features of the freshwater shrimp Macrobrachium jelskii (Miers, 1877) from São Paulo State, Brazilb - doi: 10.4025/actascibiolsci.v35i3.15815. Acta Scientiarum. Biological Sciences, 35(3), 429-436. https://doi.org/10.4025/actascibiolsci.v35i3.15815

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Issue

Vol 35 No 3 (2013)

Section

Animal Morphology & Physiology

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