Resumo
The objective of this work is to get knowledge about the "guaiamum" crabs reproduction. Two hundred and twenty four crabs were caught from August'96 to July'97. Their sex carapace color and morphometric data were obtained. The stages of gonadal development were macroscopically determined and the eggs diameter was measured. Three colors patters for the carapace for males, and four patters for females. Five stages of gonadal development were observed in female crabs, and two stages were observed for males. The first sexual maturity was estimated 53,0 mm carapace width for the females and 52,0 mm for the males. The ovigerous females occurred from March to May. The individual fecundity varied from 103.300 to 366.400 eggs. The eggs mean diameter was 0,39 mm.
Decapoda; Gecarcinida; Cardisoma guanhumi; reproduction; land crabs; mangrove
Decapoda; Gecarcinida; Cardisoma guanhumi; reproduction; land crabs; mangrove
Aspectos da reprodução do caranguejo guaiamum, Cardisoma guanhumi Latreille (Crustácea, Decapoda, Gecarcinidae) da Baía de Sepetiba, Rio de Janeiro, Brasil
The reproductive aspects of the "guaiamum" crabs, Cardisoma guanhumi Latreille (Crustacea, Decapoda, Gecarcinidae) at the Sepetiba Bay mangrove, Rio de Janeiro, Brazil
Rejane da SilvaI; Lídia Miyako Yoshii OshiroII
IPós-graduação em Biologia Animal, Universidade Federal Rural do Rio de Janeiro
IIEstação de Biologia Marinha, Universidade Federal Rural do Rio de Janeiro. Antiga Rodovia Rio-São Paulo, Km 47, 23851-970 Seropédica, Rio de Janeiro. E-mail: oshiro@ufrrj.br
ABSTRACT
The objective of this work is to get knowledge about the "guaiamum" crabs reproduction. Two hundred and twenty four crabs were caught from August'96 to July'97. Their sex carapace color and morphometric data were obtained. The stages of gonadal development were macroscopically determined and the eggs diameter was measured. Three colors patters for the carapace for males, and four patters for females. Five stages of gonadal development were observed in female crabs, and two stages were observed for males. The first sexual maturity was estimated 53,0 mm carapace width for the females and 52,0 mm for the males. The ovigerous females occurred from March to May. The individual fecundity varied from 103.300 to 366.400 eggs. The eggs mean diameter was 0,39 mm.
Key words: Decapoda, Gecarcinida, Cardisoma guanhumi, reproduction, land crabs, mangrove
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Recebido em 09.IX.2001; aceito em 07.XI.2002.
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Datas de Publicação
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Publicação nesta coleção
03 Jun 2009 -
Data do Fascículo
Dez 2002
Histórico
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Aceito
07 Nov 2002 -
Recebido
09 Set 2001
