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为了解增殖放流后,黄海北部海域中国对虾Fenneropenaeus chinensis的生长状况,于2015年6—10月在黄海北部辽宁省皮口海域进行了6个航次的回捕调查,共采集样品1434尾,并对其生长指标进行测量分析。结果表明:皮口海域中国对虾体长和体质量呈幂函数关系,雌虾W=8×10~(-6)L3.0729,雄虾W=9×10~(-6)L3.0573;采用Von Bertallanffy生长方程对皮口海域中国对虾体长、体质量进行拟合,雌虾Lt=230.09[1-e-0.0098(t-29.54)]、Wt=144.87[1-e-0.0098(t-29.54)]3.0729,雄虾Lt=175.05[1-e-0.0151(t-34.73)]、Wt=65.98[1-e-0.0151(t-34.73)]3.0573;皮口海域中国对虾在生长过程中表现出雌、雄差异,前期雄虾体长生长速度快于雌虾,约74 d后,雌虾体长生长速度明显快于雄虾,雄虾体质量生长拐点出现在109 d前后,而雌虾则出现在144 d前后;与历史文献相比较,皮口海域中国对虾的生长系数k值较小,显示出生长速度可能较其他海区有减缓的趋势,但渐近体长和渐近体质量有增大趋势;皮口海域中国对虾摄食等级存在月份差异。本研究结果可为探讨大规模增殖放流后黄海北部现有中国对虾种群的自然状况及制定相关管理策略提供科学依据。
In order to understand the growth status of Fenneropenaeus chinensis in the northern Yellow Sea after 6 days of propagation and release, a total of 1434 samples were collected from June to October in the Pigeon area of northern Liaoning Province. Its growth indicators were measured and analyzed. The results showed that there was a power function relationship between body length and body length of shrimp (P = 0) in shrimp farm, The Von Bertallanffy growth equation was used to fit the body length and body weight of prawn shrimp (Lt = 230.09 [1-e-0.0098 (t-29.54]], Wt = 144.87 [1-e-0.0098 29.54)] 3.0729, the male shrimp Lt = 175.05 [1-e-0.0151 (t-34.73)], Wt = 65.98 [1-e-0.0151 (t-34.73)] 3.0573; The growth rate of male was higher than that of female after about 74 days. The body growth rate of male was significantly faster than that of male. About 109 days after birth, Compared with the historical data, the growth coefficient k of prawn in Piper port was smaller than that in other areas, indicating that the growth rate may slow down compared with other sea areas, but asymptotic body length and asymptotic body mass Increasing trend; there is a difference of months in the feeding level of shrimp in pankou waters. The results of this study may provide a scientific basis for exploring the natural status of existing Chinese shrimp populations in the northern Yellow Sea and developing related management strategies after the large-scale proliferation and release.