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Free Content Population Structure and Fecundity of the Hermit Crab Clibanarius Antillensis Stimpson 1862 (Anomura, Diogenidae) in Southeastern Brazil

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The population structure and fecundity of Clibanarius antillensis at the rocky shore of Praia Grande, São Sebastião, São Paulo State, southeastern Brazil, was studied. Sexual dimorphism was verified, with males reaching larger sizes than females. Population sex ratio was skewed for females, which predominated in the smallest size classes, while males predominated in the largest classes. Size frequency distribution revealed a bimodal pattern correlated with seasonal differences in crab size. Reproductive season was continuous, with a peak of reproductive activity from November to March. Fecundity was positively correlated with crabs shield length and larger broods were found to be produced in relatively heavier (larger) shells. Thus, shells influenced both crab and, consequently, brood size, probably by regulating individual growth and reproductive activity of females.

Document Type: Research Article

Publication date: 1999-03-01

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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