Data/hora: 15/06/2024 15:47:09

Provedor de dados: | 52
País: | Brazil
Título: | Reproductive biology of the dusky grouper Epinephelus marginatus (Lowe, 1834)
Autores: | Andrade,Áthila Bertoncini; Machado,Leonardo Francisco; Hostim-Silva,Maurício; Barreiros,João Pedro.
Data: | 2003-06-01
Ano: | 2003
Palavras-chave: | Reproduction; Dusky Grouper; Epinephelus marginatus; Santa Catarina; Brazil.
Resumo: | Investigations were carried out about the reproductive biology of the dusky grouper, Epinephelus marginatus (Lowe, 1834) a serranid protogynous hermaphrodite fish inhabitant of rocky bottoms from shallow waters up to 200 m depth. Samples were caught in the islands that form Arvoredo Biological Marine Reserve (SC - Brazil) and the coastal islands near Florianópolis region from March 1998 to May 2000. Data from samples of juvenile groupers on intertidal pools were used to link their occurrence in the pools to the post-spawning season. To describe the histological changes on gonads along the reproductive cycle and to establish maturation scales, 109 groupers were histologically tested for sex determination. First maturation size was determined for females (L50=470 mm; r²=0.99). The results of calculated gonadosomatic (GSI) and hepatosomatic (HSI) indexes, showed that maturation occurred along the spring months and the spawning activity during the summer with a peak in December. Liver recovery (HSI elevation) was evident in the autumn, was the post spawning season. The relationship between length and weight was W = 9 · 10-6 · TL3.1149 (r²=0.998; n=246).
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000300009
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132003000300009
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.46 n.3 2003
Fonte: | info:eu-repo/semantics/openAccess