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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Morphometry and sexual maturity of the tropical hermit crab Calcinus tibicen (Crustacea, Anomura) from Brazil

Texto completo
Fransozo, A. ; Garcia, R. B. [2] ; Mantelatto, F. L. M.
Número total de Autores: 3
Tipo de documento: Artigo Científico
Fonte: Journal of Natural History; v. 37, n. 3, p. 297-304, 2003.
Área do conhecimento: Ciências Biológicas - Zoologia
Assunto(s):Caracteres sexuais   Crustacea   Anomuros   Morfometria   Maturidade sexual

Ontogenetic changes in relative growth were studied in the hermit crab Calcinus tibicen in order to determine its growth phases with sexual maturity. Specimens were collected at 2-month intervals for two consecutive years. A total of 570 individuals was collected and analysed. Total mean animal size in terms of shield length was 5.14±1.23mm for males, 4.23±0.79mm for females and 4.53±0.60mm for ovigerous females. Sexual dimorphism in chela dimensions was stronger in males than in females. Differences between males and females were found in left propodus length (LPL) and height (LPH) versus shield length (SL) and wet weight (WW) versus SL relationships. Males showed a high positive allometry, while juveniles and adult females were isometric for the LPL/SL relationship. Negative allometry was observed in adult females in the LPL/SL relationship. The size at which a differentiation occurred in the growth of the chelipeds and in the weight gain of males and females was between 3.0 and 3.2mm SL, suggesting that sexual maturity occurs in small-sized individuals in the life cycle of C. tibicen. (AU)

Processo FAPESP: 97/14245-0 - Padrão de utilização FR conchas do ermitão Calcinus tibicen (Herbst, 1791 )(Crustacea, Anomura, Diogenidae) da Praia Grande Ubatuba, SP
Beneficiário:Renata Biagi Garcia
Linha de fomento: Bolsas no Brasil - Mestrado