低温对海蜇横裂生殖影响的的研究

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1、低温对海蜇横裂生殖影响的研究的营养储备是海蜇横裂生殖的基础。在海蜇螅状体具有足够营养储备的前提下，短期低温处理措施作为海蜇天然生活史的一种简短而迅速的重演，可以有效地诱导海蜇横裂生殖批量地发生。本文研究结论在理论上有助于阐明海蜇横裂生殖的调控机制，在生产上可为海蜇苗种培育提供参考和指导，提高海蜇螅状体的重复再利用效率，及时地大量获得海蜇碟状体苗种，节约育苗成本，有助于海蜇增养殖产业的发展壮大。关键词：低温，海蜇，横裂生殖低温对海蜇横裂生殖影响的研究TheEffectofLowTemperatureontheStrobilationofJellyfish，Rhopilemaesc

2、ulentumKishinouyeAbstractn地jellyfishhasbeenavaluableseafoodinChinaforthousandsofyears，andjellyfishrelatedbusinessesgeneratemillionsofdollarsinAsiaeveryyear．Jellyfishisatypeofnaturalhealthseafood、机tllimportantmedicalvalueswhicharcusedintraditionalChinesemedicalprescription．Inrecentyears，theje

3、ll如shhasreplacedtraditionalculturedshrimpandfishinsomeareasofChinaandhasbecomeallimportantpond-culturedspecies．And，strobilationisonlyonewaytogettheephyraeofjellyfish足esculentum．Inthispaper,theeffectsoflowtemperatureandtemperaturedecreaseonthescyphistomaestrobilationofjellyfish，足esculentum，we

4、restudiedinthispaper．Thereshouldbeaparticularregulationmechanismduringthescyphistomaestrobilation．Themainresultsareasfollows：mscyphistomaeofjellyfish，RhopilemaesculentumKishinouye，werebredinlowtempcratm'eenvironment、jl，itll6--7"Cformorethanoneye虬whichalreadystrobilatedinthefirstyear．And，33．0

5、9-a：9．13％ofthesescyphistomaearestillaliveinthenextyear．Thelivabilityofthescypistomaeissignificantlyhigherthanthatofthescyphistomaewhicharenotbredinlowtemperatureenvironment．Then,thewaterwasgraduallyheatedto20℃toinducethestrobilation．mephyraereleaserateis15．19-a：1．59％，whichiscomparedwiththere

6、porteddata．Accordingthisresearch,alongtermlowtemperaturecanimprovethelivabilityifscyphistomaeof足esculentum，andmaybehelpfultothestrobilationinthefirsttime，althoughlowtemperatureenvironmentisnotnecessarytothestrobilationofR．esculentum．However,thestrobilationmechanismofR．esculentumneedsfurtherr

7、esearches．Wefoundtllatoncethescyphistomaewereabouttostrobilateephyraeat19C，thestrobilationcouldcontinue，thoughatalowerrate，ifthewatertemperaturewaslowered，andtheephyraeproducedcouldstilldevelopnormallyintoyoungmedusae．Tobemoreconcrete，whenthetemper