[OANNES Foro] Size increment of jumbo flying squid Dosidicus gigas mature females in Peruvian waters, 1989–2004

[raul sanchez]

Progress In Oceanography
Volume 79, Issues 2-4, October-December 2008, Pages 308-312 
The Northern Humboldt Current System: Ocean Dynamics, Ecosystem Processes, and Fisheries 
doi:10.1016/j.pocean.2008.10.003    

Size increment of jumbo flying squid Dosidicus gigas mature females in Peruvian waters, 1989–2004 

Juan Argüellesa, , , Ricardo Tafura, Anatolio Taipea, Piero Villegasa, Friedeman Keylb, Noel Domingueza and Martín Salazara

aInstituto del Mar del Perú, Callao, Peru

bCentre for Tropical Marine Ecology, Bremen, Germany

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: Dosidicus gigas; Length-at-maturity; Population structure; Peru

Saludos,

Raúl E. Sánchez Scaglioni