| 唐峰华,刘尊雷,黄洪亮,刘健,张衡,朱金鑫,崔雪森.2015.日本海太平洋褶柔鱼生物学特征的年际变化.动物学杂志,50(3):381-389. |
| 日本海太平洋褶柔鱼生物学特征的年际变化 |
| Interannual Variability of Biology Characteristics of Japanese Common Squid in the Sea of Japan |
| 投稿时间：2014-09-11 修订日期：2015-04-14 |
| DOI：DOI: 10.13859/j.cjz.201503008 |
| 中文关键词: 日本海 太平洋褶柔鱼 群体结构 性比 年际变化 |
| 英文关键词:The Sea of Japan Japanese common squid（Todarodes pacificus） Population structure Sex ratio Annual variability |
| 基金项目:国家科技支撑计划项目(2013BAD13B01)；国家“863”项目(2012AA092303) |
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| 中文摘要: |
| 根据2010~2013 年连续4个年度在日本海进行鱿钓生产采集的样本，利用SSPS软件统计拟合生长和Logistic曲线的方法，分析了太平样褶柔鱼（Todarodes pacificus）的胴长、体质量、性别、性成熟度和摄食强度等生物学特征，以及日本海太平洋褶柔鱼群体结构和组成的年际变化。太平洋褶柔鱼总样本数量为388尾，其中雌、雄个体的平均胴长分别为231 mm和230 mm，优势胴长组为220~250 mm。各年度样本的雌雄性比均接近1:1，总性比为0.89。胴长和体质量关系呈幂函数变化。Logistic曲线拟合个体初次性成熟胴长，其中雌性为216.04 mm，雄性为216.71 mm。样本以性成熟个体为主，成熟率（Ⅲ、Ⅳ和Ⅴ期）高达78.35%。摄食强度主要分布在Ⅰ、Ⅱ、Ⅲ等级，从胃含物组成的出现频率来看，以鱼类最高且主要是沙丁鱼类和灯笼鱼类，频率达70%以上；头足类次之，甲壳类较少。日本海太平洋褶柔鱼各年度的群落结构稍有差异，推测其生长发育与海洋环境因子关，如温度、海流、盐度、饵料丰度等不同变化造成。 |
| 英文摘要: |
| Biology characteristics（such as mantle length, body weight, gender, sexual maturity and feeding levels） of Japanese common squid （Todarodes pacificus） were analyzed by using collected samples from squid jigging in the Sea of Japan from 2010 to 2013, using SSPS software counting fitting growth and Logistic curve. We stated the annual variability of community structure and composition of T. pacificus in the Sea of Japan. As the research of total sample size of Japanese Common Squid in the Sea of Japan were 388. Results showed that female and male mean mantle length of T. pacificus were 231mm and 230 mm (Table 1). The trunk of the individual advantage length group was 220﹣250 mm (Fig.2). The sex ratio was 0.89 which had no significant differences on 1:1 null hypothesis (Fig.1). The relationship between mantle length and body weight was depicted by the power function with growth parameter b closed to 3(Fig.3 and Fig.4). Logistic curve fitting the size at first maturity, the female was 216.04 mm, and the male was 216.71 mm (Fig.6). The mature rate （Ⅲ, Ⅳ and Ⅴ period） was 78.35% in this study (Fig.5), and the feeding intensity mainly distributed at level 1, 2, 3 based on 5 feeding intensity level(Fig.7). From ANOVA to test the effect of maturity stages on the relationship between mantle length and body weight, the relationship had significant differences (Table 2). Fish were the most frequent food （up to 70%） in the stomach contains, mainly on sardines and lantern fish, then Cephalopods, a little crustacean. Annual variability of community structure of T. pacificus in the Sea of Japan was slight different. Its growth and development is related to the change of the marine environment factors, such as temperature, current, salinity and bait abundance. |
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