Insights into genetic variation and demographic history of sharpnose rays:examinations of three species of Telatrygon(Elasmobranchii,Dasyatidae)from the Indo-West Pacific  

作　　者：Jiwei QI Fanglei SHI Baowei ZHANG Xiao CHEN Jie XING Keisuke FURUMITSU Joel B.CORUSH Atsuko YAMAGUCHI Jie ZHANG 

机构地区：[1]Key Laboratory of Animal Ecology and Conservation Biology,Institute of Zoology,Chinese Academy of Sciences,Beijing,China [2]School of Life Science,Anhui University,Hefei,Anhui,China [3]College of Marine Sciences,South China Agricultural University,Guangzhou,China [4]East China Sea Centre of Standard and Metrology,SOA,Shanghai,China [5]Faculty of Fisheries,Nagasaki University,Nagasaki,Japan [6]Illinois Natural History Survey,University of Illinois Champaign-Urbana,Champaign,Illinois,USA [7]State Key Laboratory of Marine Resource Utilization in South China Sea,Hainan University,Haikou,China

出　　处：《Integrative Zoology》2022年第6期1063-1077,共15页整合动物学（英文版）

基　　金：financially supported by the Strategic Priority Research Program of Chinese Academy of Sciences(XDA19050202);the Natural Science Found of China(No.31272287 and No.41666008);the Grants-inaid for Conservation of Fishery Resources of the Ministry of Agriculture in China(No.171721301354052003);the JSPS Invitation Fellowship Program for sampling and Research in Japan.

摘　　要：Coastal and demersal chondrichthyans(sharks,rays,and skates)are expected to exhibit high levels of genetic differentiation in areas of complex geomorphology.Population genetic studies investigating the extent to which demographic history shapes the genetic structure of thesefishes are rare.Here,we combined mitochondrial DNA(Cytb and ND2)and 8 nuclear microsatellite loci from 244 individuals to examine the population genetic structure and demographic history of the 3 Indo-West Pacific species of sharpnose rays(Telatrygon zugei,Telatrygon biasa,and Trygon crozieri).High levels of genetic variation both within and between species were identified.Phylogenetic analysis partitioned haplotypes into 2 lineages supporting divergence of T.zugei from T.crozieri and T.biasa during the Pleistocene.Furthermore,microsatellite-based clustering analyses identified 4 genetic groups(i.e.T.zugei from Japan,T.zugei from coastal China,T.biasa from Gulf of Thailand,and T.crozieri from the Andaman Sea).Measurements of genetic differentiation also support these 4 groups.Additionally,Pleistocene demographic expansions were examined in all genetic groups.The climate oscillations and current hydrologic cycles in the Indo-West Pacific appear to coincide with the hypothesis regarding speciation and the observed demographic history trends of the sharpnose rays.Considering the species group has,until recently,been thought to be one species,these results are critical for defining management units and guiding conservation efforts to preserve stingray biodiversity.

关 键 词：conservation biodiversity of stingray demographic history genetic variation Indo-West Pacific Telatrygon 

分 类 号：Q95[生物学—动物学]