头足类分类鉴定研究进展

CurrentstatusandprospectsofidentificationoftheCephalopod,MMDYLOVE,头足类分类鉴定研究进展,TheRecentCephalopodainclude2subclasses,11orders/suborders,50families,18subfamilies,154genera,35-36subgenera,approximately718species(somedoubtful),and42subspecies.Theclassincludesbothneriticandoceanicspeciesandbothassemblagesincludepelagicandbottom-connectedspecies.Cephalopodbelongstoanimportanteconomicmolluskandalsoplaysanimportantroleinthemarineecologicalsystem.Itsexploitationandutilizationhavebeenrecognizedintheworld.,Thecurrentstudyaboutthepopulationandlife-historyidentificationmethodforcephalopodcanbedividedintoseveralparts,mainlyontheaspectsofmorphology(statolith),ecology(distributionandmigration),biochemistry(Isozymeelectrophoresis)andmoleculargenetics(SSR,SNP)indetails,theresultsshowthatthegreatprogresshasbeenmadeintheworld.,CompanyLogo,Contents,Radula(齿舌）,Reproductivesystem(生殖系统),Statolith(耳石),CompanyLogo,Statolith耳石,Statolithisakindofhardtissuethatlivesinthestatocyst,itsfunctionistobalancethespeciesbody.Ageandgrowthareimportantresearchcontentinbiologyofcephalopod,andusingincrementsinstatolithtodeterminetheirageandstudytheirgrowthisareliableandeffectivemethod.Afterbeingextracted,groundandpolished,eachstatolithwasmadeintoathinslice,andringswerecountedintheobservedplane.Selectionofgrindingplaneisakeyprocessofmakingtheslice.Ingeneral,grindingplaneoflongitudinalsectionwasselectedandclearerincrementsinstatolithwerecounted.,CompanyLogo,CompanyLogo,Method,1.Extractionandpreservationofthestatolith2.Grindingthetissueintoplanes.3.Usingtheincrementstoexplorethestatolithage.,CompanyLogo,ThreegrindingplanesofstatolithofOmmastrephes,CompanyLogo,Reproductivesystem生殖系统,CephalopodsreproductivesystemisanimportantpartforCephalopods,notonlyisconsideredasthebasisofbiologicalstudyandthefocusofreproductivebiology,butalsoplaysanimportantroleinthetaxonomy.,CompanyLogo,Reproductivesystemofoctopodsforfemaleandmale,Forfemales,therearesuchremarkabledifferencesastheoviductandoviducalglandamongOmmastrephids,Myopsids,SepioidsandOctopods.Formales,hectocotylusisakindofspecialwristincephalopods,itsfunctionistotransferspermatophoreintothefemalecephalopodswhenmatingbegin.Itsanimportanttaxonomycharacteristicandtherearesomedifferencesintheirlocationsandstructurewhichcanhelpustoidentifythesespecies.,CompanyLogo,Hectocotylusofthemaleoctopods,1.Uroteuthissinghalensis僧伽罗尾枪乌贼,2.Abraliopsisgilchristi吉氏小钩腕乌贼,3.Liocranchiareinhardti纺锤乌贼,4.Histioteuthisheteropsis异帆乌贼,5.Pterygioteuthisgiardi翼乌贼,Teuthoidea枪形目,CompanyLogo,Diagram,1.Sepiaofficinalis乌贼,2.Sepiolarobusta粗壮耳乌贼,3.Sepiolaparva多斑耳乌贼,Sepioidea乌贼目,CompanyLogo,MarketingDiagram,1.Amphitretusthielei蒂勒氏水母蛸,2.A