Ciclo reprodutivo e flutuação anual da população de Janaira gracilis (Crustacea, Isopoda, Asellota)

The life cycle and seasonal population changes of Janaira gracilis Moreira & Pires, is studied in detail. J. gracilis is the most common isopod of the phytal fauna of Sargasswn cymosum from Praia do Lamberto, Ubatuba, State of São Paulo (23º30'S and 45º07'W). The samples were collected...

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Detalles Bibliográficos
Autor: Pires, Ana Maria Setubal
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:1977
País:Brasil
Institución:Instituto Oceanográfico da Universidade de São Paulo (IOUSP)
Repositorio:Boletim do Instituto Oceanográfico
Idioma:portugués
OAI Identifier:oai:revistas.usp.br:article/39834
Acceso en línea:https://revistas.usp.br/biocean/article/view/39834
Access Level:acceso abierto
Descripción
Sumario:The life cycle and seasonal population changes of Janaira gracilis Moreira & Pires, is studied in detail. J. gracilis is the most common isopod of the phytal fauna of Sargasswn cymosum from Praia do Lamberto, Ubatuba, State of São Paulo (23º30'S and 45º07'W). The samples were collected once a month from January 1972 to January 1973. The data show a reproductive period continuous throughout the year with two peaks of major reproductive intensity. It is also discussed the populations characteristics and the sex ratio fluctuations.