Data/hora: 06/06/2024 00:53:36

Provedor de dados: | 104
País: | Brazil
Título: | Population structure and reproductive biology of Metamysidopsis neritica (Crustacea: Mysidacea) in a sand beach in south Brazil
Autores: | Calil,Patrícia; Borzone,Carlos A.
Data: | 2008-09-01
Ano: | 2008
Palavras-chave: | Opossum shrimps; Reproductive biology; Surf zone; Sandy beach.
Resumo: | Mysidacea are common sublittoral crustaceans that inhabit all coasts in the world. In this study, the population characteristics and the reproductive biology of Metamysidopsis neritica Bond-Buckup &amp;amp; Tavares, 1992 were studied in the surf zone of a south Brazilian beach (Atami). Mysids were sampled at monthly intervals from August, 1999 to July, 2000 (total of 29,490 individuals). Individuals were classified into six population categories. The highest abundance occurred in May (8,665) and August (6,415), and lowest in September (336) and December (368). Three main generations were identified, namely the summer, fall and winter generations. The winter generation was the longest (four to five months). The fall generation lasted four months, and the summer one extended from three to four months. Ovigerous females occurred throughout the year, with a greater proportion in July. The number of eggs or larvae varied from one to 16. Weak associations were found between female length and egg number, egg volume, and the number of larvae with and without eyes. Egg volume increased during the coldest season, whereas the smallest values were recorded during summer. These results suggest a possible direct relationship between egg volume and generation longevity.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752008000300004
Editor: | Sociedade Brasileira de Zoologia
Relação: | 10.1590/S0101-81752008000300004
Formato: | text/html
Fonte: | Revista Brasileira de Zoologia  v.25 n.3 2008
Fonte: | info:eu-repo/semantics/openAccess