Data/hora: 02/06/2024 12:42:29

Provedor de dados: | 104
País: | Brazil
Título: | Biologia populacional de Emerita brasiliensis Schmitt (Crustacea, Hippidae) na Praia Vermelha do Norte, Ubatuba (São Paulo, Brasil)
Autores: | Nakagaki,Jelly Makoto; Pinheiro,Marcelo Antonio Amaro.
Data: | 1999-01-01
Ano: | 1999
Palavras-chave: | Hippidae; Emerita brasiliensis; Population structure; Sex-ratio.
Resumo: | Emerita brasiliensis Schmitt, 1935 is a common mole crab called "tatuíra" in Brazil, with distribution from Espírito-Santo State (Brazil) to Buenos Aires Province (Argentina). Specimens were collected bimonthly from May/1992 through March/1993 with 4mm siffers mesh, in the intertidal region at Vermelha do Norte Beach, Ubatuba, São Paulo, Brazil. The animals were sexed and measured with a precision caliper of 0.1 mm (Cl = carapace length). Males presented cl amplitude from 3.4-17.3mm (13.2±2.1mm), and females from 13.8-26.3mm (20.5±1.8mm), showing a well-defined sexual dimorfism for this variable. The population presented a smaller incidence of males in relation to females (0.54:1.00), however in May/1992 an inverse pattern occurred (1.84:1.00). Ovigerous females were present in all samples with exception of May and September/1992 with greater frequencies in July/1992 and January/1993. It is probable that female maturity occurs is reached with 17mm CL, the smallest size in wich ovigerous females were found.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Português
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000600010
Editor: | Sociedade Brasileira de Zoologia
Relação: | 10.1590/S0101-81751999000600010
Formato: | text/html
Fonte: | Revista Brasileira de Zoologia  v.16 suppl.2 1999
Fonte: | info:eu-repo/semantics/openAccess