Population and reproductive biology of the crab Uca burgersi (Crustacea : Ocypodidae) in three subtropical mangrove forests
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Data
2007-06-01
Autores
Benetti, A. S.
Negreiros-Fransozo, M. L.
Costa, T. M.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Revista de Biologia Tropical
Resumo
Population and reproductive biology were studied in three populations of the crab Uca burgersi Holthuis, 1967, in the Indaia, Cavalo and Ubatumirim mangrove forests (Ubatuba, São Paulo State, Brazil). Crabs were collected during low tide (August 2001 through July 2002), by digging the sediment, with a standard capture effort (two persons for 30 min.). Carapace width was measured, and gonad developmental stage was recorded from all specimens. U. burgersi was most abundant in the Cavalo mangrove, where the largest mate was found. Juvenile crabs were found year-round at all three sites. However, the ratio of ovigerous females was very low, even null in the Cavalo mangrove. The gonad development rate indicated that U. burgersi was reproducing continuously, but more intensively during spring and summer, with recruitment occurring in winter. The synchrony between the populational and reproductive biology in the three areas showed that local features were not the limiting factors. It is suggested that this species is a habitat generalist.
Descrição
Palavras-chave
fiddler crab, reproductive cycle, population structure, Brazilian mangroves
Como citar
Revista de Biologia Tropical. San Jose: Revista de Biologia Tropical, v. 55, p. 55-70, 2007.