%0 Journal Article
%T Age,growthandreproductionofSarcocheilichthysnigripinnisfromtheQingyiStreamintheHuangshanMountains
%J 动物学研究
%P 25-31
%D 2012
%X Identifyingthelife-historystrategiesoffishandtheirassociationswiththesurroundingenvironmentisthebasicfoundationintheconservationandsustainableutilizationoffishspecies.Weexaminedtheage,growth,andreproductionofSarcocheilichthysnigripinnisusing352specimenscollectedmonthlyfromMay2009toApril2010intheQingyiStream.Wefoundthesexratioofthisstudypopulationwas0.58:1(female:male),significantlydifferentfromexpected1:1.Femalesandmalesbothcomprisedfouragegroups.TheannulionthescaleswereformedduringFebruaryandMarch.Noobviousbetween-sexdifferencewasobservedinlength-weightandlength-scale-radiusrelationships.Thetotallengthinback-calculationsignificantlyincreasedwithageforbothsexes,butdidnotdiffersignificantlyateachagebetweenthetwosexes.AninflectionpointwasobservedinthegrowthcurvesgivenbythevonBertalanffygrowthfunctionfortotalweight.Atthisinflectionpoint,fishwere3.95years.Bothsexesreachtheir50%sexmaturityatage2,whenfemalesandmaleswere94.7mmand103.0mmtotallength.Thetemporalpatternofthegonado-somaticindexcorrespondedtoaspawningperiodthatoccurredfromAprilthroughJuly.Thenon-synchronicityofeggdiameterineachmatureovaryduringthebreedingperiodsuggestedthesefishmaybebatchspawners.Theabsolutefecundityincreasedsignificantlywithtotallengthandweight,whereasnosignificantcorrelationwasobservedbetweentherelativefecundityandbodysize.
%K Sarcocheilichthysnigripinnis
%K Agestructure
%K Annulusformation
%K Sexualmaturity
%K Spawningperiod
%K Reproductiveinvestment
%U http://www.zoores.ac.cn/CN/abstract/abstract3186.shtml