简介：Inthisstudy,familiesofselectedpopulationforgrowth(SP_BWT),selectedpopulationforwhitespotsyndromevirus(WSSV)resistance(SP_RW),Bohaiwildpopulation(WP_BH)andHuanghaiwildpopulation(WP_HH)ofF.chinensiswereconstructedthroughartificialinseminationandwiththestandardizedprocedureoflarvaerearing.Growthandsurvivalperformancewerestudiedamongfourpopulationsaftera70dayscommontest.Theresultsshowedthatthemaximumleastsquaremeanofbodyweightwas17.50ginSP_BWTwhiletheminimumwas13.03ginWP_HH.ComparedwithWP_BH,bodyweightofSP_BWTincreasedby23.41%(P<0.01)andthatofSP_RWby12.20%(P>0.05).BodyweightsofSP_BWTandSP_RWweresignificantlyhigherthanthatofWP_HH,whichincreasedby34.31%(P<0.01)and22.10%(P<0.05),respectively.ThemeanAGRoffourpopulationswas0.19,0.18,0.17and0.16gd-1,respectively.Coefficientofvariationofbodyweightamongfourpopulationswashigh,whichrangedfrom32.67%to35.25%.Sucharangeshowedthattherewasthepotentialityforfurtherimprovementinselectedpopulations.Coefficientofvariationofsurvivalrateamongfourpopulationswaslow,varyingbetween3.20%and5.90%.Thedifferenceofsurvivalwashighlysignificant(P<0.01)betweenSP_BWTandWP_BH,andsignificant(P<0.05)betweenSP_RWandWP_BH.However,nosignificantdifferenceamongotherpopulations(P>0.05)wasobserved.Differentgrowthperformanceswerealsoobservedamongdifferentfamiliesineachpopulation.Thebodyweightof798Ffamilywasthehighest.Theabsolutegrowthrate(AGR)was0.25gd-1,150%higherthanthatofthelowestone,0.1gd-1in807Ffamily.Survivalrateoffamiliesamongfourpopulationswasdifferent.Thehighestwas94.74%,andthelowestwas71.88%.