Author/Authors :
Argüelles، نويسنده , , Juan and Tafur، نويسنده , , Ricardo and Taipe، نويسنده , , Anatolio and Villegas، نويسنده , , Piero and Keyl، نويسنده , , Friedeman and Dominguez، نويسنده , , Noel B. Salazar، نويسنده , , Martيn، نويسنده ,
Abstract :
Changes in population structure of the jumbo flying squid Dosidicus gigas in Peruvian waters were studied based on size-at-maturity from 1989 to 2004. From 1989 to 1999, mature squid belonging to the medium-sized group prevailed, but from 2001 on, mature squids were larger. This change is not related to the changes in sea surface temperature and we hypothesized that it was caused by the population increase of mesopelagic fishes as prey.
Keywords :
Peru , Dosidicus gigas , Length-at-maturity , Population structure
