Low diversity,little genetic structure but no inbreeding in a high-density island endemic pit-viper Gloydius shedaoensis

作     者：Guannan Wen Long Jin Yayong Wu Xiaoping Wang Jinzhong Fu Yin Qi Guannan Wen;Long Jin;Yayong Wu;Xiaoping Wang;Jinzhong Fu;Yin Qi

作者机构：Chengdu Institute of BiologyChinese Academy of SciencesChengdu 610041 China Key Laboratory of Southwest China Wildlife Resources Conservation(Ministry of Education)China West Normal UniversityNanchong 637009 China College of Life Sciences and Food EngineeringYibin UniversityYibin 644007 China Nature Conservation of Snake Island and Laotieshan MountainDalian 116041 China Department of Integrative BiologyUniversity of GuelphGuelphOntario N1G 2W1Canada 

出 版 物：《Current Zoology》 (动物学报（英文版）)

年 卷 期：2022年第68卷第5期

页      面：526-534页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 071002[理学-动物学] 

基　　金：Key Laboratory of Southwest China Wildlife Resources Conservation(Ministry of Education),China West Normal University(XNYB18-02) Nature Conservation of Snake Island and Laotieshan Mountain,Dalian,China(Y8Y3041) 

主　　题：genetic diversity and structure Gloydius shedaoensis historical demography inbreeding insular species 

摘      要：Island species and their ecosystems play an important role in global biodiversity preservation,and many vulnerable island species are conservation *** insular habitat likely facilitates the species diversification process,it may also aggravate the fragility of these species with high risk of *** Shedao pit-viper Gloydius shedaoensis is an island endemic species with an extremely high population density,which has been categorized as vulnerable in the IUCN(International Union for the Conservation of Nature and Natural Resources)Red *** collected 13,148 SNP(Single Nucleotide Polymorphism)from across its genome and examined its genetic diversity and demographic *** Shedao pit-viper has a low genetic diversity but shows no sign of ***,population genetic structure analysis,including the neighbor-joining tree,principal coordinate analysis,clustering,and spatial autocorrelation,revealed a general lack of spatial *** the isolation by distance residues suggested a weak ***,the population is nearly panmictic and gene flow is evenly distributed across the island.A large number of individuals,small size of the island,and the lack of population structure likely all contribute to the lack of inbreeding in this *** also detected signs of male-biased dispersal,which likely is another inbreeding avoidance *** demographic analysis suggested that the historical population size and distribution of the species are much larger than their current *** multiple transgressive–regressive events since the Late Pleistocene are likely the main cause of the population size *** together,our results provide a basic scientific foundation for the conservation of this interesting and important species.