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云南光唇鱼人工繁殖与苗种培育初步研究-论文

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ntimeforAcrossocheilusyunnanensisintheupperreachesofWujiangriverisMay,withthewatertemperaturebeing14~18℃41parentfernaleegglayingprocesswasexpedited,eededinspawning,acquiring37,9000eggsTheabsolutefecun—dityofAcrossocheilusyunnanensiswas10,965~14,389,withanaverageeggandarelativefecundityof29~95egg/g,and34.8egg/g.Thefertilizedeggswerehatchedinawatertemperatureof15±05℃for135~149hours,and139,000newlyhacthcedfrieswhichwere8~11ramlongwereobatianedThevwereledwithwaterearthwormsastheopeningbaitinmixednourishmentperiodwithtwo-stepfoodconversionmethodAfter30days,93,000frieswithanoveralllengthof15~2.3cmwereaquried.Theparturifacientrate,fertilizedrateandhatchingratewere70.7,62.1,and587respectively.Andthefrybreedingrateofsurvivalwas669.Keywords:Acrossocheilusyunnanensis;artificialreproduction;fryrearing

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