Growth of the hermit crab Clibanarius vittatus (Bosc, 1802) (Crustacea, Anomura, Diogenidae) at São Vicente, São Paulo, Brazil

Brazilian Archives of Biology and Technology

Bruno Sampaio Sant’anna¹  Ronaldo Adriano Christofoletti¹  Cilene Mariane Zangrande¹  Alvaro Luis Diogo Reigada¹ 

[1] ,Universidade Estadual Paulista Campus do Litoral Paulista Unidade São VicenteSão Vicente SP ,Brazil

关键词: Growth;    Anomura;    Clibanarius;    Crustacea;    hermit crab;   

DOI  :  10.1590/S1516-89132008000300014

来源: SciELO

【 摘 要 】

The present study analyzed the growth of males and females of the hermit crab Clibanarius vittatus (Bosc, 1802), at São Vicente, São Paulo, Brazil. Monthly collections were made from May/2001 through April/2003, at the Pescadores Beach in São Vicente. The 2,501 crabs caught were identified and sexed and the carapace shield length (CSL) was measured. For the seasonal growth study, the population was divided into 5mm size classes (CSL) and analyzed by the Bertalanffy method, with the aid of the program Fisat II. The mean sizes of the 703 males and 1,798 females were 8.94±1.80 and 6.61±1.13 mm, respectively. A seasonal growth pattern was observed, with males reaching an asymptotic size (14.92 mm) larger than that of females (13.85 mm). Males began the growth process approximately five months before the females. This growth pattern probably helped to reduce intraspecific competition for the shells, because the males reached larger size and made the smaller shells available to the females.

【 授权许可】

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