Shell occupation as a limiting factor for Pagurus brevidactylus (Stimpson, 1859) in the Marine State Park of Laje de Santos, Brazil

Autor(es)

da Silva, Alexandre Ribeiro ^[1] ; Galli, Giovanna Mielli ^[1] ; Stanski, Gilson ^[1] ; De Biasi, Juliana Beltramin ^[2] ; Davanso, Thiago Maia ^[3] ; Cobo, Valter Jose ^[4] ; Castilho, Antonio Leao ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, UNESP, Dept Zool, Inst Biociencias Botucatu, NEBECC, BR-18618689 Botucatu, SP - Brazil

^[2] Univ Fed Paulista UNIFESP, Inst Mar, GenPesc, Lab Genet Pesqueira, Santos - Brazil

^[3] Univ Paulista UNIP, Inst Ciencias Saude, Bauru - Brazil

^[4] Univ Taubate UNITAU, Inst Basico Biociencias, Lab Biol Marinha, Taubate - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INVERTEBRATE REPRODUCTION & DEVELOPMENT; v. 63, n. 1, p. 1-10, JAN 2 2019.
• Citações Web of Science: 0

Resumo

Hermit crabs are soft-abdomen decapods. They depend upon gastropod shells for protection, with the latter influencing growth rate, mortality and reproduction. The present work aims to provide information about the biology and reproduction of Pagurus brevidactylus in a conservation area in Brazilian southeastern littoral. The material was sampled through active searching by SCUBA diving and refuge traps. We analyzed population structure, fecundity, reproductive output (RO), reproductive periodicity and shell utilization for P. brevidactylus. In total, 54 males, 18 non-ovigerous females, 34 ovigerous females and 10 juveniles were sampled. The females had a fecundity of 69.5 +/- 65 eggs, which was lower than that compared to other populations from different localities. The RO ranged from 1.48% to 63.04%, with a mean of 26.75 +/- 18.23%. There was a positive relationship between egg number and female size. The animals had continuous reproduction, but they reached smaller maximum sizes when compared with other populations. The shell occupation pattern was also different from other localities, the shells of Phrontis alba being the most occupied; this shell has a smaller size when compared to others that P. brevidactylus occupies in other localities. Therefore, P. alba could have had limited the growth and reproduction of P. brevidactylus. (AU)

• Processo FAPESP: 15/18472-1 - Investimento reprodutivo e fecundidade na fauna de anomuros de substrato consolidado da Ilha Vitória e do Parque Estadual Marinho da Laje de Santos (São Paulo, Brasil)
• Beneficiário: Giovanna Mielli Galli
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 10/50188-8 - Crustáceos decápodes: multidisciplinaridade na caracterização da biodiversidade marinha do estado de São Paulo (taxonomia, espermiotaxonomia, biologia molecular e dinâmica populacional) (Biodiversidade Marinha)
• Beneficiário: Fernando Luis Medina Mantelatto
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático