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时间:2018-04-16
《角突网纹溞和蚤状溞作为泥鳅开口饵料的可行性研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、第44卷第5期淡水渔业2014年9月Vol.44No.5FreshwaterFisheriesSep.2014角突网纹溞和蚤状溞作为泥鳅开口饵料的可行性研究1,21,222董旭峰,宋祥甫,周文宗,陈桂发(1.上海海洋大学水产与生命学院,上海201306;2.上海市农业科学院,上海201403)摘要:在水温(25±1)℃的条件下,以熟蛋黄为对照,研究了角突网纹溞(Ceriodaphniacornuta)和蚤状溞(Daph-niapulex)作为泥鳅(Missgurnusarguillicaudatus)开口饵料的可行性。试验泥鳅为3
2、日龄仔鱼,全长为(4.23±0.05)mm,体重为(1.21±0.01)mg,试验周期为20d。结果显示:角突网纹溞组、蚤状溞组及蛋黄组泥鳅仔鱼的成活率分别为59.00%、38.67%和27.00%,三组之间的差异均达极显著水平;角突网纹溞组、蚤状溞组和对照组的泥鳅仔鱼全长分别为(26.43±1.96)mm、(28.30±7.64)mm和(12.74±0.15)mm,体重分别为(148.98±25.50)mg、(158.02±101.41)mg和(19.36±0.83)mg,两试验组间的全长和体重差异不显著,但均与对照组有极显著差
3、异。结果表明,两种枝角类(尤其是角突网纹溞)作为泥鳅仔鱼的开口饵料,能较大幅度地提高泥鳅仔鱼的成活率,且可获得较大规格的鳅苗,在鳅苗的规模化人工繁育中具有较大的应用价值。关键词:角突网纹溞(Ceriodaphniacornuta);蚤状溞(Daphniapulex);泥鳅(Missgurnusarguillicaudatus);开口饵料中图分类号:S966.4文献标识码:A文章编号:1000-6907-(2014)05-0078-04DOI:10.13721/j.cnki.dsyy.2014.05.015Studyonthefea
4、sibilityofusingCeriodaphniacornutaandDaphniapulexasinitialfeedforMissgurnusarguillicaudatus1,21,222DONGXu-feng,SONGXiang-fu,ZHOUWen-zong,CHENGui-fa(1.Collegeoflifescienceandfishery,ShanghaiOceanUniversity,Shanghai201306,China;2.Shanghaiagriculturalacademyofsciences,Sh
5、anghai201403,China)Abstract:ThefeasibilityofusingCeriodaphniacornutaandDaphniapulexasinitialfeedforMissgurnusarguillicaudatuswasstudiedatthewatertemperatureof(25±1)℃,whilethecookedeggyolkwasusedasthecontrol.Theexperimentlastedfor20days.Theexperimentalloachfrieswerethr
6、eedaysoldwith(4.23±0.05)mmintotallengthand(1.21±0.01)mginweight.TheresultsshowedthatthesurvivalratesofloachfriesweresignificantlydifferentamongtreatmentsfedwithC.cornuta,D.pulexandcookedeggyolk,whichwere59.00%,38.67%and27.00%,respectively.Thetotallengthofthegroupfedwi
7、thC.cornuta,D.pulexandthecontrolgroupwas(26.43±1.96)mm,(28.30±7.64mmand(12.74±0.15)mm,whiletheweightwas(148.98±25.50)mg,(158.02±101.41)mgand(19.36±0.83)mg,respectively.Althoughtherewerenosignificantdifferencesinthetotallengthandweightbetweenthesetwoexperimentalgroups,
8、bothofthemweresignificantlyhigherthanthoseinthecontrolgroup.TheresultsindicatedthatbothofthesetwokindofCladocerans(especiall
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