中国海洋大学学报（自然科学版）2011，Vol.41Issue(11)：43-47,5.
秘鲁外海茎柔鱼渔场时空分布分析
Spatial and Temporal Distribution of Fishing Ground for Dosidicus giga s in the Offshore Waters of Peru
摘要
Abstract
Jumbo flying squid, Dosidicus gigas, distributed in the waters of Peru, is an important economic squid. Understanding of the spatial and temporal variations in the distribution of this squid is useful to rational utilization of its resources. In this study, based on the fishing data and sea surface temperature (SST) collected by Chinese squid fleets in the waters off Peru from 2003 to 2004 and from 2006 to 2009, the methods of spatial distance and aggregative analysis were used to study the spatial and temporal variations in fishing ground for Dosidicus gigas. The result indicated that there were some differences on the gravity between years. It was found that the position of longitude showed westward move with months, whereas its latitude showed northward shift from January to June and southward shift from July to December. The cluster analysis showed that four groups are divided, I. E. (2003, (2006 and 2008)), (2004, (2007 and 2009)) respectively. The results indicated that the gravities of catch between 2006 and 2009 are different. The former's weight position of catch is 82°23'W and 12°53'S and the tatter's weight position of catch is 81°47 W and 14°27' S, which have 1. 5 degrees of latitude difference. The results showed that the monthly difference in fishing ground may be caused by the migration of jumbo flying squid, and the annual difference in fishing ground may be related to the changes of marine environment.关键词
茎柔鱼/渔场时空分布/表温/秘鲁外海Key words
Dosidicus gigas/ spatial and temporal distribution of fishing ground/ sea surface temperature/ offshore waters of Peru分类
农业科技引用本文复制引用
徐冰,陈新军,钱卫国,田思泉..秘鲁外海茎柔鱼渔场时空分布分析[J].中国海洋大学学报（自然科学版）,2011,41(11):43-47,5.基金项目
国家高技术研究发展计划项目(2007AA092201 （）
2007AA092202) （）
国家发改委专项(2060403) （2060403）
上海市捕捞学重点学科项目(S30702)资助 （S30702）
