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引用本文:孔优佳,童合一.滆湖人工放流技术的改进及其效益分析.湖泊科学,1994,6(1):55-61. DOI:10.18307/1994.0107
Kong Youjia,Tong Heyi.Technical improvement of fish stocking in Gehu Lake and its benefits. J. Lake Sci.1994,6(1):55-61. DOI:10.18307/1994.0107
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滆湖人工放流技术的改进及其效益分析
孔优佳1, 童合一2
1.江苏省诵期渔业生产管理委员会, 常州213002;2.上海水产大学, 上海200090
摘要:
本文研究了滆湖1986-1988年人工放流主要鱼类的年龄组成、生长速度、肥满度、回捕率及其经济效益。青鱼、草鱼和团头鲂等主要放流种类的回捕率为23.85%-39.88%;鲢鳙鱼为8.20%-19.63%;中华绒螫蟹苗和蟹种分别为2.69%和48.57%。人工放流的产量效益平均为14.3倍,经济效益早均为9.6倍。
关键词:  人工放流  回捕率  产量效益  经济效益  滆湖
DOI:10.18307/1994.0107
分类号:
基金项目:国家重点科技攻关项目(75-06-04-01-07)子专题
Technical improvement of fish stocking in Gehu Lake and its benefits
Kong Youjia1, Tong Heyi2
1.Management Committee of Fisheries of Gehu Lake. Changzhou 213002;2.Shanghai Fisheries llnic., Shanghai 200090
Abstract:
The present paper deals with the age compositions, growth rates,condition coefficients, recapture rates, productive results and economic benefits of principal aquatic products which were stocked artificially during 1986-1988 in Gehu Lake. The recapture rates of black carp (Mylopharyngodon pureua), grass carp (Ctenopharyngod on ulellus) and blunt snout bream (Megalobrama amblycephala) were 23.85%~39-88%, silver carp (Hypophihaimichthys moliirix) and bighead carp (Aridvchthya nohilig) were 8.20%-19.63%. megalopa of mitten crab (Eriocheir avienaiti) was 2.69%. young mitten crab was-18.57%. The average production results of fish stocking increased by a factor of 14.3 and the average economic benefits by a factor of 9.6.
Key words:  Fish stocking  recapture rate  production result  economic benefit  Gehu Lake
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