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gene-associated microsatellite markers confi rm panmixia and indicate a diff erent pattern of spatially varying selection in the endangered Japanese eel Anguilla japonica

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Journal of Oceanology and Limnology 2020年第5期38卷 1572-1583页

作者： YU Lei LIU Yanfang LIU Jinxian CAS Key Laboratory of Marine Ecology and Environmental Sciences Institute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Ecology and Environmental Science Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China University of Chinese Academy of Sciences Beijing 100049China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China.

The Japanese eel(Anguilla japonica)is a commercially important fi sh species in East Asia and its recruitment has been rapidly declining since *** the genetic population structure of *** is the basis of multinational cooperation on its management and protection,due to its large distribution ***-associated markers have been proved powerful in delineating fi ne-scale population genetic structure and spatially varying *** the present study,we developed 24 polymorphic gene-associated microsatellite markers including 18 loci associated with the genes under selection in the two North Atlantic eel species(Anguilla anguilla and Anguilla rostrata)and 6 loci based on transcript sequences.A total of 13 geographic populations were sampled across its distribution range,including 11 samples from China(9 from China’s mainland and 2 from Taiwan region),and 2 samples from Japan.A total of 416 individuals(mostly glass eels)were collected and genotyped at the 24 *** measures of diff erentiation were accordant with a panmictic scenario(F ST=-0.001)in *** footprints of spatially varying selection were found,indicating that the selection pattern in *** might be diff erent from that in the two North Atlantic eel *** suggest that *** should be managed as a single unit and management and conservation eff orts must be coordinated at the international level,as overexploitation in any region will decrease its recruitment across the whole distributional range.

关键词： Japanese eel Anguilla japonica panmixia gene-associated microsatellite spatially varying selection

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