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Position: Home > Articles > Biological Characteristics of Cololabis saira in North Pacific Ocean High Sea Shandong Fisheries 2007 (3) 43-45+9

北太平洋公海秋刀鱼生物学特性初步研究

作  者:
朱清澄;夏辉;叶旭昌;许巍;花传祥;马伟刚
单  位:
上海水产大学海洋学院
关键词:
秋刀鱼;生物学特性;北太平洋公海
摘  要:
根据2004年7~11月西北太平洋秋刀鱼探捕调查的生物学数据,通过统计回归方法分析了秋刀鱼的性腺成熟度,摄食等级,性比,叉长分布,叉长和体重、净重关系。结果为:性成熟度为Ⅱ期的占52.96%;摄食等级主要为2级和3级,占72.91%;性比接近1:1;体长范围为186~340mm,优势体长组为220~280mm;雌性的叉长略大于雄性;群体可能属于2个不同群体,生长参数大于3。
译  名:
Biological Characteristics of Cololabis saira in North Pacific Ocean High Sea
作  者:
Zhu Qingcheng et al
关键词:
Cololabis saira;biological characteristics;North Pacific Ocean
摘  要:
Based on the biological data of Cololabis saira measured from investigation made by Stick-Held Net in the North Pacific Ocean during July and November 2004,this paper analyzed the Cololabis saira's maturity stages of the gonad,feeding intensity,sex ratio,fork length distribution,relationships between fork length and net weight,fork length and round weight by statistic and regression methods.The results indicate:(1)Maturity atⅡof the gonad are dominant with percentage of 52.96%.(2) The feeding intensity is mainly in class 2 or class 3,totally 72.91%.From above,it can been deduced that the investigated area is feeding ground for Cololabis saira.(3)The female-male ratio is near 1:1.(4)The fork length range is 186-340 mm and the dominant length is 220-280 mm, 69.7%.The fork length of female is slight large than male's. The fork length frequency distribution indicate the Cololabis saira might belong to two different population. (5)The growing parameter is than 3.

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