Sinopotamon+wanzaiense胃磨形态发育分析与其在分类上的意义

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1、AbstractABSTRACTobjective：TodetectanymorphologicaldifferencesofmaleandfemaleS．wanzaiensegastricmillsatdifferentdevelopingstagesanddiscussthesignificanceofgastricmillmorphologyintheclassificationoffreshwatercrabsindetail．Methods：1．IdentifiedSwanzaiensespecimenscollectedfromSanzhualunforestryfarminJi’

2、ancounty，Jiangxiprovince．2．ComparethegastricmillsmorphologyofmaleandfemaleXwanzaiensespecimensatdifferentdevelopmentalstagesusingthestereomicroscope．TakepicturesofmaleandfemaleS．wanzaiensespecimensatdifferentdevelopmentalstagesanddrawthem．Definitedthecharacteristicmorphologicalindexesofgastricmills，

3、andmeasuredtheseindexesusingSDCsoftware(version1．2)，thenweanalyzethemeasureddatawithstatisticaltools．3．Screenfortheclassificationindexes．4．EstablishthegrowthcurvesandgrowthequationsofS．wanzaiensegastricmillsatdifferentdevelopingstages．5．Discussthemorphologicalcharacteristicsofthegastricmillsatdiffer

4、entdevelopingstagesanditssignificanceintheclassificationoffreshwatercrabsindetail．Results：WecomparedgastricmillsmorphologyofS．wanzaiensesusingstereomicroscope．ItappearsthatthegastricmillsofmaleandfemaleS．wanzaiensesharessimilarmorphology．ThegastricmillsmorphologiesofS．wanzaienseatdifferentdeveloping

5、stagesarealsosimilar．StatisticalanalysisindicatesthatthegastricmillsmorphologyofmaleandfemaleS．wanzaiensesatdifferentdevelopingstagesweresimilar，whichsupportstheresultsofcomparisons．Inaddition，thisstudvalsoconfirmsthatthecharacteristicmorphologicalindexesofgastricmillsofS．wanzaiensewerelinearlycorre

6、latedwithcarapacelength(insteadoftheage)．Conclusion：ThegastricmillsmorphologyofmaleandfemaleS．wanzaienseatdifferentdevelopingstagesaresimilar，andthecharacteristicmorphologicalindexesofgastricmillsofS．wanzaiensearelinearlycorrelatedwithcarapacelength(insteadoftheage)．TheresuItsshowsthatthemorphologyt

7、hegastricmillisstablewithinspecies，s。thegastricmill，asan。Velm。rphol。gicaItax。n。mycriterium，isanusefulcomplementtothemalefirstpleopodwhichisamajorcategoriesintaxonomysystemthefreshwatercrabs．Keywords：S