海州湾与其邻近海域四种经济鱼类卵子大小时空变化的初步分析-(5987)

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1、万方数据小与水温间的关系符合一次线性回归方程。各航次调查站位的取样卵子在空间上也存在显著差异，这可能与不同环境下的饵料差异有关。本研究旨在对海州湾的经济鱼类的繁殖力、产卵期以及鱼类早期生活史性征提供基础数据。关键词：海州湾；卵子大小；时空变化万方数据PrimaryresearchontemporaIandspatialeggsizechangesoffoureconomicfishspeciesinHaizhouBayandadjacentseaareaAbstractEggsizeisanin】

2、portantbiologbJparameterreflectjngtheenVironmentaroundSpawninggmundand矗shrepmductiVecharacteristics．BasedonthesⅢVeysconductedin<20md印thWaterSofthecentralYelbwSeainsixVoyages舶mlateApriltoearlyJulyin20l3，theten甲oralandspatialchan萨sofeconomic6sheggmo叩hob

3、gyands沈wereamlyzed．WeusedPhotographedsanlplin吕In咀ge-proplusima萨amlysisso胁areandSPSSstat西ticalanalysissofharet0薛nerallyanalyzetheSpatialandten甲oralvariationofnlajoreconomic6sheggsizeinthespring、Vaters．Meanwhile，weamlyzedthesignincantenVironmental自ctorS

4、re衙ringtotemporalandSpatialVariationS，andthenwecanmake如rthere冲brationtotheimpactabouttheenV矗DnmerIIalfactorSonearly1ifehistoryof6shandreproduct沁esn鼍te醇sofbbodstock．Theresuhs砌jcatedthatthemo巾hobgyofJapaneseanchoVyeg笋iSellipticalinthestudyarea．Flatheadf

5、isheg昏，Spanjshmackereleg芦areSphericalshape．ThereweI．enosignifjcantdjl瓷rencesineggsizeamongdjfl’erentdeVeIopmentalstagBs．AndbothteⅡporalandSpatialVariatjonsineggsizeshowedsignincamdi仃erence．EggsizeofJapaneseanch0Vy，flatheadnshandSpanishnlackerelshoweda

6、gradualdecreasing骶ndf而mearlyMaytoearlyJuly，whichwasne醇tiVelycorrehtedwithseatemperature．Eg拳ofJ印aneseanChoVy，flathead6shandSpaniShmackerelbe铲nt0appearinearlyMaywithhr萨stbngitudinalsectiDnareai11thestudywater．JapaneseanChoV)，eg昏’meanbngeraxiswas1．57士0．0

7、9m】m，meanshoneraxisO．77士0．04舢m，andmean】argestbngitud访a1sectionarea0．95士0．07mrn2，andmeanratjooflon萨raxistoshoneraxiS2．03士O．13．Meandiameterofnathead6sheg舻、抛s1．57士O．09mm．MeandiameterofSpanishmackereleggswas1．69士O．09舢11．Minimumeggsize印pearedinlateJune：J印a

8、neseanchoVy万方数据eg字’meanbngeraxiswas1．20士0．07mm，meanshoneraxisO．64士0．03mm，andmean1ar昏stlongjtudimlsectbnarea0．6l土0．43舢稃，themeanmti0ofbn萨ra烛tos】№rteraxiswas1．88士O．13．Meand讧meterofflatheadnsheggswas1．20士O．05mm'MeandiameterofSpanishmackereleg拳was1