The influence of the 1992-1993 el niño on the reproductive biology of Scomber japonicus peruanus (Jordán & Hubb, 1925)
The influence of the 1992-1993 El Niño events on the reproductive behavior of the Scomber japonicus peruanus (Chub mackerel) was studied from samples collected monthly, along the Peruvian coast (3º23'S-14º00'S), from January 1990 to December 1993. The monthly variation of the gonadosomatic...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2009 |
| País: | Brasil |
| Institución: | Universidade de São Paulo (USP) |
| Repositorio: | Brazilian Journal of Oceanography |
| Idioma: | inglés |
| OAI Identifier: | oai:revistas.usp.br:article/38546 |
| Acceso en línea: | https://revistas.usp.br/bjoce/article/view/38546 |
| Access Level: | acceso abierto |
| Palabra clave: | Scomber japonicus peruanus Gonadal maturation Gonadosomatic index Condition factor El Niño event South Pacific Maturação gonadal Índice gonadossomático Fator de condição El Niño Pacífico Sul |
| Sumario: | The influence of the 1992-1993 El Niño events on the reproductive behavior of the Scomber japonicus peruanus (Chub mackerel) was studied from samples collected monthly, along the Peruvian coast (3º23'S-14º00'S), from January 1990 to December 1993. The monthly variation of the gonadosomatic index and the frequency of the periods of gonad maturation evidenced that the spawning of the species occurred all year long, being more intense in summer. The values of the gonadosomatic index were higher during the occurrence of the 1992-1993 El Niño, while the body weight and gonad weight decreased. Regarding the condition factor, its values decreased in females over 35 cm in fork length. |
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