| 印度洋中南部长鳍金枪鱼生物学特性的研究 |
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| 引用本文： | 李攀,许柳雄,朱国平,陈锦淘.印度洋中南部长鳍金枪鱼生物学特性的研究[J].大连水产学院学报,2010,25(3):248-252. |
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| 作者姓名： | 李攀 许柳雄 朱国平 陈锦淘 |
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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;大洋渔业资源可持续开发省部共建教育部重点实验室,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 |
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| 基金项目： | 国家"863"计划项目，上海市重点学科建设项目，上海市教委创新项目，上海高校选拔培养优秀青年教师科研专项基金资助项目 |
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| 摘 要： | 根据2008年9月—2009年4月印度洋中南部金枪鱼延绳钓渔场所捕获的长鳍金枪鱼Thunnus alalun-ga数据,对该鱼种的生物学特征进行了分析。结果表明：1）叉长为74~120 cm,优势叉长为105~110cm,约占总数的47.8%,平均叉长为（107.2±4.99）cm。2）长鳍金枪鱼叉长（LF,cm）与加工后重（WD,kg）的关系可表达为WD=1.7146×10-5LF3.0197（总体）,WDM=7×10-5L2F.M7229（雄性）,WDF=2×10-6L3F.F5354（雌性）。3）调查期间,长鳍金枪鱼性腺成熟度以Ⅳ级为主,约占总数的43.1%。4）当长鳍金枪鱼叉长小于100 cm时,摄食等级以0级和2级为主;当叉长为100~120 cm时,空胃率达39%以上,且随叉长的增长而递增。当叉长为91~110 cm时,摄食饱满指数随叉长增长而上升;当叉长为111~120 cm时,饱满指数随叉长递增而降低。
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| 关 键 词： | 长鳍金枪鱼 生物学特性 印度洋中南部 |
Biological characteristics of albacore Thunnus alalunga in the southern and central Indian Ocean |
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| LI Pan,XU Liu-xiong,ZHU Guo-ping,CHEN Jin-tao.Biological characteristics of albacore Thunnus alalunga in the southern and central Indian Ocean[J].Journal of Dalian Fisheries University,2010,25(3):248-252. |
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| Authors: | LI Pan XU Liu-xiong ZHU Guo-ping CHEN Jin-tao |
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| Institution: | LI Pan1,XU Liu-xiong1,2,3,ZHU Guo-ping1,CHEN Jin-tao1,3(1.College of Marine Sciences,Shanghai Ocean University,Shanghai 201306,China,2.The Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources,Ministry of Education,3.The Key Laboratory of Shanghai Education Commission for Oceanic Fisheries Resources Exploitation,China) |
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| Abstract: | The biological characteristics of albacore Thunnus alalunga,including body length frequency,sex ratio,and food were analyzed by the data collected by Chinese tuna longline operation in the southern and central Indian Ocean from September of 2008 to April of 2009.The results showed that the fork length（LF） ranged from 74 to 120 cm with predominant 105-110 cm（47.8%）,and with mean LF of（107.2±4.99） cm.The relationship between fork length and dressed weight（WD） for both sex of albacore can be expressed as WD=1.7146×10-5L3.0197F for female,WDM=7×10-5L2.7229FM,and WDF=2×10-6L3.5354FF for male.The gonads were mainly developed into stage IV（about 43.1%） during the survey.The stages 0 and 2 were found in feeding stages for the fish with fork length of below 100 cm,most（over 39%） of which had empty stomach.The fish with fork length of 100-120 cm,however,had an increase in the stomach fullness,and a decrease for the fish with fork length of 91-110 cm and 111-120 cm. |
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| Keywords: | Thunnus alalunga biological characteristics the southern and central Indian Ocean |
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