南太平洋长鳍金枪鱼延绳钓渔场与海水表层温度的关系分析  

The relationship between longline albacore Thunnus alalunga and sea surface temperature in the South Pacific Ocean

作　　者：樊伟[1] 张晶[2] 周为峰[2] 

机构地区：[1]东海水产研究所农业部海洋与河口渔业重点开放实验室,上海200090 [2]中国水产科学研究院渔业资源遥感信息技术重点开放实验室,上海200090

出　　处：《大连水产学院学报》2007年第5期366-371,共6页Journal of Dalian Fisheries University

基　　金：国家"863"计划项目(2003AA637030);国家自然科学基金资助项目(40571129)

摘　　要：依据南太平洋长鳍金枪鱼Thunnus alalunga渔获量和海水表层温度等环境数据,研究了延绳钓长鳍金枪鱼渔获量的分布及渔场区海水表层温度(SST)的统计特征。结果表明:长鳍金枪鱼渔场分布具有纬向分布特征,主要分布于10°S两侧和25～30°S之间的西南太平洋海域;长鳍金枪鱼渔场区平均SST为25.8℃,中位数为27.0℃,多数渔场区平均海水表层温度为22～29℃;渔场区海水表层温度数据分布偏向高温区,产量数据分布为正偏;平均CPUE和平均产量分布变化一致,温度为17～18℃的海域渔场平均CPUE和平均产量最高;不同温度下总渔获量分布呈双峰型,分别为20℃和29℃附近海域;捕捞群体在高温海域(≥24℃)和低温海域(<24℃)有所不同,高温海域长鳍金枪鱼的个体相对较大;时间序列分析表明,长鳍金枪鱼CPUE同南方涛动指数具有相关性。The albacore Thunnus alalunga longline fishery is one of the important fisheries in South Pacific Ocean. According to collected catch data of the albacore, sea surface temperature （SST） derived from satellite 3 -level production and literatures, the distribution of longline albacore and its relationship with SST were analysised quantitatively or qualitatively by using GIS technology. The results showed that the distribution of longline albacore fishing -grounds was latitudinal zones, and mainly located the area of bilateral of 10°S and 25 -30°S. The average SST and median SST of albacore longline fishing - grounds was 25.8 ℃ and 27.0 ℃, additionally, average SST of most fishing grounds was 22 - 29 ℃. The distribution shape of SST was negative skew and the distribution shape of catch was positive skew. Variation of average CPUE and average yields was similar, the highest when the SST was about 17 - 18 ℃. Distribution of total catch was two crest at different SST and the peak appeared when SST were 20 ℃ and 29 ℃. The individual of fishing was different at higher SST area （ 〉 24 ℃ ） and lower SST area （ 〈 24 ℃ ）, and the individual was large in higher temperature area than in lower temperature. There was a correlation between CPUE of albacore and MEI by time series analysis.

关 键 词：南太平洋 长鳍金枪鱼 延绳钓 海表温度 

分 类 号：S931[农业科学—渔业资源]