| 水温变动对2009年西北太平洋柔鱼产量下降的影响 |
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| 引用本文： | 陈峰,陈新军,钱卫国,刘必林,田思泉.水温变动对2009年西北太平洋柔鱼产量下降的影响[J].广东海洋大学学报,2010,30(1):65-71. |
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| 作者姓名： | 陈峰 陈新军 钱卫国 刘必林 田思泉 |
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| 作者单位： | 1. 上海海洋大学海洋科学学院,上海,201306
2. 上海海洋大学海洋科学学院,上海,201306;大洋生物资源开发和利用上海市高校重点实验室,上海,201306;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 |
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| 基金项目： | 国家科技863计划，国家科技863计划，国家科技支撑计划，和上海市捕捞学重点学科 |
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| 摘 要： | 分布在西北太平洋的柔鱼是我国远洋鱿钓渔业的重要捕捞对象,近些年来其产量一直处在稳定的水平。然而,2009年8～10月旺汛期间在传统作业渔场(150°E～165°E、38°E～46°E)柔鱼产量出现大幅度下降,其日产量仅为正常年份的一半。为此,根据2007～2009年8～10月我国在西北太平洋鱿钓生产数据,以及产卵场表层水温,探讨2009年柔鱼产量下降及渔场变动的原因。研究表明,其产量出现下降的原因可能有2个:(1)柔鱼产卵场(20°N～30°N,130°E～170°E)黑潮大弯曲的发生,使得21℃等温线向南偏移,使得柔鱼资源补充量受到影响,从而使得渔汛期间柔鱼产量的下降;(2)旺汛期间(8～9月)传统作业渔场(42°N～46°N,150°E～165°E)的100m水层有一个明显冷水南下,分布位置为154°E～156°E,将传统作业渔场(150E～165°E)一分为二,向南的前锋(水温低于5℃)到达42°N,明显不同于正常年份,使得作业渔场的范围明显缩小,不适合柔鱼的集群,导致产量出现大幅下降。
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| 关 键 词： | 柔鱼 渔场 深层水温 产卵场 西北太平洋 |
Influence of Variability of Temperature on Decline of Catch for Ommastrephes bartramii in the Northwestern Pacific Ocean in 2009 |
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| CHEN Feng,CHEN Xin-jun,QIAN Wei-guo,LIU Bi-lin,TIAN Si-quan.Influence of Variability of Temperature on Decline of Catch for Ommastrephes bartramii in the Northwestern Pacific Ocean in 2009[J].Journal of Zhanjiang Ocean University,2010,30(1):65-71. |
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| Authors: | CHEN Feng CHEN Xin-jun QIAN Wei-guo LIU Bi-lin TIAN Si-quan |
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| Institution: | CHEN Feng1,CHEN Xin-jun1,2,3,QIAN Wei-guo1,LIU Bi-lin1,TIAN Si-quan1,3 (1.College of Marine Sciences,Shanghai Ocean University,Shanghai 201306,China,2.The Key Laboratory of Oceanic fisheries resources exploitation of Shanghai education commission,3.The Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources (Shanghai Ocean University),Ministry of Education,China) |
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| Abstract: | The red flying squid (Ommastrephes bartramii) widely distributed in the North Pacific Ocean is a main fishing target for Chinese distant-water squid jigging fisheries.The production has maintained a steady level in the recent years.However,it declined sharply in the traditional fishing ground during the main fishing season (from August to October) in 2009,and the daily catch was only half of that in the normal years.Therefore,based on the catch from the Chinese squid jigging vessels and environment data in ... |
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| Keywords: | Ommastrephes bartramii fishing ground deep-water temperature spawning ground northwestern Pacific Ocean |
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