简介：Theneonflyingsquid,Ommastrephesbartramii,isaspeciesofeconomicallyimportantcephalopodintheNorthwestPacificOcean.Itsshortlifespanincreasesthesusceptibilityofthedistributionandabundancetothedirectimpactoftheenvironmentalconditions.Basedonthegeneralizedlinearmodel(GLM)andgeneralizedadditivemodel(GAM),thecommercialfisherydatafromtheChinesesquid-jiggingfleetsduring1995to2011wereusedtoexaminetheinterannualandseasonalvariabilityintheabundanceofO.bartramii,andtoevaluatetheinfluencesofvariablesontheabundance(catchperuniteffort,CPUE).TheresultsfromGLMsuggestedthatyear,month,latitude,seasurfacetemperature(SST),mixedlayerdepth(MLD),andtheinteractionterm(SST×MLD)weresignificantfactors.TheoptimalmodelbasedonGAMincludedallthesixsignificantvariablesandcouldexplain42.43%ofthevarianceinnominalCPUE.Theimportanceofthesixvariableswasrankedbydecreasingmagnitude:year,month,latitude,SST,MLDandSST×MLD.Thesquidwasmainlydistributedinthewatersbetween40?Nand44?NintheNorthwestPacificOcean.TheoptimalrangesofSSTandMLDwerefrom14to20℃andfrom10to30m,respectively.Thesquidabundancegreatlyfluctuatedfrom1995to2011.TheCPUEwaslowduring1995–2002andhighduring2003–2008.Furthermore,thesquidabundancewastypicallyhighinAugust.Theinterannualandseasonalvariabilitiesinthesquidabundancewereassociatedwiththevariationsofmarineenvironmentalconditionsandthelifehistorycharacteristicsofsquid.