Assessment of Enhancement Effectiveness of Chinese Shrimp Fenneropenaeus chinensis Stock in the Laoshan Bay
Assessment of Enhancement Effectiveness of Chinese Shrimp Fenneropenaeus chinensis Stock in the Laoshan Bay
复制标题
DOI：
--
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Yuan We
中科院分区：
文献类型：
--
作者：
Yuan We
中华明对虾是崂山湾增殖放流最重要的品种之一。为了评价放流肉虾增殖放流的潜在效果，根据2012年7月至9月在崂山湾进行的肉虾监测和回捕调查，采用Bhattacharya法对放流肉虾的成活率、生长率、洄游模式和回捕率进行了分析。放流的对虾主要栖息在崂山湾内、中部海域，沉积物为沙质或砂泥底质。8月中旬，第一批和第二批放流的肉虾平均体长分别为144.9毫米和130.5毫米，放流和野生肉虾占总种群的比例分别为92%和8%。研究期间(8月下旬至10月上旬),崂山湾共捕捞放流对虾99.6万尾,肉虾平均回收率为0.58%,可能是由于食物竞争、敌害生物和栖息地破坏等原因造成的。虽然肉虾回收率较低,但种群增殖仍能获得生态、经济和社会效益。崂山湾的肉质虾。
Fleshy prawn Fenneropenaeus chinensis is one of the most important species for stock enhancement in the Laoshan Bay.To evaluate the potential effectiveness of releasing fleshy prawn stock enhancement,we analyzed the survival rate,growth rate,migratory pattern,and recapture rate of the released fleshy prawn using the Bhattacharya method based on the monitoring and recapture survey of fleshy prawn from July to September 2012 in the Laoshan Bay.We found that the released prawn mainly inhabited in inner or middle part of the Laoshan Bay,in which the sediments were sandy or sand-mud substratum.In mid-August,the mean body length of the first and second batch released fleshy prawn were 144.9 mm and 130.5 mm,respectively.The ratios of the released and wild fleshy prawns to the total population were 92% and 8%,respectively.The fleshy prawn moved from shallow water to deep water when the water temperature decreased.During the study period(from late August to early October),a total of 0.996 million released prawns were collected with the 0.58% mean recapture rate of fleshy prawn in the Laoshan Bay,which might be explained by the food competition,enemy creature and habitat destruction.Although the recapture rate of fleshy prawn was low,the ecological,economic and social benefits were still gained from the stock enhancement of fleshy prawn in the Laoshan Bay.