期刊
PROGRESS IN OCEANOGRAPHY
卷 79, 期 2-4, 页码 308-312出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.pocean.2008.10.003
关键词
Dosidicus gigas; Length-at-maturity; Population structure; Peru
类别
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. (C) 2008 Elsevier Ltd. All rights reserved.
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