Phylogenomic resolution of Imparidentia(Mollusca:Bivalvia)diversifcation through mitochondrial genomes  

作　　者：Yu Wang Yi Yang Lingfeng Kong Takenori Sasaki Qi Li 

机构地区：[1]Key Laboratory of Mariculture,Ministry of Education,Ocean University of China,Qingdao 266003,China [2]Laboratory for Marine Fisheries Science and Food Production Processes,Laoshan Laboratory,Qingdao 266237,China [3]The University Museum,The University of Tokyo,Tokyo 113-0033,Japan

出　　处：《Marine Life Science & Technology》2023年第3期326-336,共11页海洋生命科学与技术（英文）

基　　金：The authors would like to thank Dr.Weibo Song and Ms.Gongaote Zhang for improving the quality of the fgures in the manuscript.This work was supported by the grants from National Natural Science Foundation of China(31972789);Industrial Development Project of Qingdao City(20-3-4-16-nsh);the Science and Technology Development Project of Weihai City(2018NS01).

摘　　要：Despite signifcant advances in the phylogenomics of bivalves over the past decade,the higher-level phylogeny of Imparidentia(a superorder of Heterodonta)remains elusive.Here,a total of fve new mitochondrial sequences(Chama asperella,Chama limbula,Chama dunkeri,Barnea manilensis and Ctena divergens)was added to provide resolution in nodes that required additional study.Although the monophyly of Lucinida remains less clear,the results revealed the overall backbone of the Imparidentia tree and the monophyly of Imparidentia.Likewise,most relationships among the fve major Imparidentia lineages—Lucinida,Cardiida,Adapedonta,Myida and Venerida—were addressed with a well-supported topology.Basal relationships of Imparidentia recovered Lucinidae as the sister group to all remaining imparidentian taxa.Thyasiridae is a sister group to other imparidentian bivalves(except Lucinidae species)which is split into Cardiida,Adapedonta and the divergent clade of Neoheterodontei.Neoheterodontei was comprised of Venerida and Myida,the former of which now also contains Chamidae as the sister group to all the remaining venerid taxa.Moreover,molecular divergence times were inferred by calibrating nine nodes in the Imparidentia tree of life by extinct taxa.The origin of these major clades ranged from Ordovician to Permian with the diversifcation through the Palaeozoic to Mesozoic.Overall,the results obtained in this study demonstrate a better-resolved Imparidentia phylogeny based on mitochondrial genomes.

关 键 词：Imparidentia PHYLOGENY Mitochondrial genome 

分 类 号：P53[天文地球—古生物学与地层学]