天津海域中国对虾资源量分析

发布时间：2018-05-10 22:11

本文选题：天津海域 + 中国对虾　；参考：《渔业现代化》2014年02期

【摘要】：根据2013年5、6、8、10月4个航次的底拖网调查结果,利用-分布模型法、扫海面积法、Cadina经验公式等,对天津海域中国对虾资源进行评估,并分析了其季节变化及分布情况。结果显示,调查海域5月未捕获中国对虾,6月中国对虾平均体重为4.31 g,平均体长75.82 mm,平均头胸甲长23.04 mm,8月中国对虾平均体重为23.82 g,平均体长143.33 mm,平均头胸甲长43.38 mm,10月捕获中国对虾1尾。中国对虾8月份平均资源密度最大,为1 502.94 ind/km2、43.31 kg/km2,其资源分布呈逐月向外海深水区推移的趋势,资源量分布重心:6月位于117°53.23'E、39°00.28'N,8月位于117°57.22'E、38°52.96'N,10月位于118°00'E、39°00'N。2013年天津海域中国对虾现存资源量为129.93 t,最大持续产量为212.20 t。
[Abstract]:Based on the results of the bottom trawl survey of 4 voyages in 2013, this paper evaluates the resources of Penaeus chinensis in Tianjin sea area by using the method of distribution model and Cadina empirical formula, and analyzes its seasonal variation and distribution. The results show that The average weight of Penaeus chinensis was 4.31 g in June, the average body length was 75.82 mm, the average length of head chest nail was 23.04 mm, the average weight of Penaeus chinensis in August was 23.82 g, the average body length was 143.33 mm, the average length of head chest nail was 43.38 mm, and the tail of Penaeus chinensis was caught in October. The average resource density of Penaeus chinensis in August was the highest, which was 43.31 kg / kg 路km ~ (2) in August. The center of gravity of resource distribution is 117 掳53.23 00'N.2013 (39 掳00.28) in June, 117 掳57.22 (38 掳52.96) in August, and 118 掳00 (39 掳00'N.2013) in October. In Tianjin, the existing resources of Penaeus chinensis are 129.93 t and the maximum sustainable yield is 212.20 t.
【作者单位】：天津市水产研究所;天津渤海水产研究所;
【基金】：天津市科技兴海科研项目“天津海域海洋生物物种多样性保护技术开发与应用”(kx2010-4)
【分类号】：S932.51

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