中西太平洋鲣鱼丰度的时空分布及其与表温的关系  

Spatio-temporal distribution of skipjack tuna(Katsuwonus pelamis) abundance and its relationship with sea surface temperature in Western and Central Pacific Ocean

作　　者：胡奎伟[1] 朱国平[1,2,3] 王学昉[1] 许柳雄[1,2,3] 

机构地区：[1]上海海洋大学海洋科学学院,上海201306 [2]大洋渔业资源可持续开发省部共建教育部重点实验室,上海201306 [3]大洋生物资源开发和利用上海市高校重点实验室,上海201306

出　　处：《海洋渔业》2011年第4期417-422,共6页Marine Fisheries

基　　金：国家"863"计划项目(2007AA092202);国家自然科学基金(41006106);上海市科委重点攻关计划(073205110);上海市重点学科建设项目(S30702);海洋渔业科学与技术浙江省重中之重学科开放课题(20100124);大洋渔业资源可持续开发省部共建教育部重点实验室开放基金(B-8211-09-0003-1)

摘　　要：中西太平洋是全球金枪鱼围网的主要海域,鲣鱼(Katsuwonus pelamis)是金枪鱼围网的主要作业对象。本研究利用1983～2007年中西太平洋金枪鱼围网渔获物数据,结合海洋表层温度(SST)数据,分析中西太平洋鲣鱼资源丰度在时间序列和空间位置上的分布规律。研究表明,1983～2002年,各年平均CPUE在时间序列上呈一定的上升趋势,1983～2002年,平均SST在一定范围内上下波动,平均CPUE和平均SST无显著相关性;2003～2007年,平均CPUE和平均SST均呈较大幅度上升,两者呈显著相关。从空间位置分析,鲣鱼资源量集中出现在SST为28～30℃之间的海域,在5°N和10°S附近海域CPUE反映的总体资源量较高,而在0°和5°S的资源量较低。鲣鱼资源量较大区域分布在冷暖水团交汇处。The Western and Central Pacific Ocean（WCPO） is the main region of tuna purse seine fishery,and the main target species in the region is skipjack tuna（Katsuwonus pelamis）.In order to study the spatio-temporal distribution of skipjack tuna abundance and its relationship with sea surface temperature（SST）,the catch data of purse-seine fishery and SST data of WCPO from 1983 to 2007 were analyzed.Results indicated that： the annual average catch per unit efforts（CPUEs） showed upward trend from 1983 to 2002,and annual average SSTs fluctuated at a cetrain level at the same time.There was no significant correlation between average SST and average CPUEs,if considering temporal series;both the annual average CPUEs and the annual average SSTs significantly increased and showed significant correlation with each other from 2003 to 2007.In terms of spatial distribution,the skipjack tuna abundance distributed intensively in the areas where the SST values ranged from 28 to 30 ℃,with higher abundance near 5°N and 10°S,but lower abundance near 0°N and 5°S.Results showed that the areas with higher abundance of skipjack tuna were the ocean front regions where warm water masses met cold water masses.

关 键 词：中西太平洋 鲣鱼 金枪鱼围网 海洋表面温度 

分 类 号：S931.41[农业科学—渔业资源]