| 北太平洋海区柔鱼生物学特征分析 |
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| 引用本文： | 黄洪亮,郑元甲.北太平洋海区柔鱼生物学特征分析[J].海洋渔业,1998(3). |
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| 作者姓名： | 黄洪亮 郑元甲 |
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| 作者单位： | 中国水产科学研究院东海水产研究所，中国水产科学研究院东海水产研究所 上海 200090，上海 200090 |
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| 摘 要： | 本文根据1997年6～11月北太平洋柔鱼生物学特征分析:中部海区渔获胴体组成明显大于西部海区且主要由雌性柔鱼组成;不同月份钓获的雌、雄性柔鱼群体组成有较大的差异;两海区随着生产月份的延续,所渔获的柔鱼胴体范围有扩大的趋势;平均纯体重,雌性柔鱼占平均体重的82.51～84.79％,而雄性柔鱼占平均体重的83.88～85.60％;柔鱼的性腺发育程度随着生产月份的推迟,发育程度也越高,而在相同的月份雄性柔鱼发育程度较雌性柔鱼为高;柔鱼的摄食等级不论是雌鱼还是雄鱼,基本以1、2级为主,较高摄食等级的比例似有逐月下降的趋势;柔鱼的胃含物以鱼的鳞片等鱼的残余物出现率较高,头足类次之,尤其是摄食等级高的胃含物中头足类的比例较高。
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| 关 键 词： | 北太平洋 柔鱼 生物学特征 分析 |
ANALYSES ON THE BIOLOGICAL CHARACTERISTICS OF SQUID IN THE NORTH PACIFIC |
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| Huang Hongliang Zheng Yuanjia.ANALYSES ON THE BIOLOGICAL CHARACTERISTICS OF SQUID IN THE NORTH PACIFIC[J].Marine Fisheries,1998(3). |
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| Authors: | Huang Hongliang Zheng Yuanjia |
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| Abstract: | Based on the analyses of the biological characteristics of squid in the North Pacific during June to November 1997, the results were as follows: the mantle length groups in mid area were distinctively greater than those in western area, and mainly composed of male squids; the composition of squid stocks between male and female in different months caught varied greatly; with the operation carried out successively in both area, the range of mande length tended to enlarge; the average weight of female and male squids accounted for 82. 51 - 84. 79% and 83. 88 - 85. 60% of the average weight, respectively; with the delay of the operation, the sexual gland became more developed and the male gonadal development was higher than that of female in the same mondi; the feeding grades of squid in both sex were chiefly grade I and grade II while the ratio of higher feeding grades appeared to be decreasing with each mondi; the residues in stomach content of squid occurred more frequent in the form of fish scales, followed by the cephalopods, especially those of higher feeding grade of cephalopods had a high ratio. |
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| Keywords: | The Noth Pacific squid biological characteristics analysis |
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