Comparative mitogenome phylogeography of two anteater genera (Tamandua and Myrmecophaga;Myrmecophagidae, Xenarthra): Evidence of discrepant evolutionary traits  

作　　者：Manuel Ruiz-García Daniel Pinilla-Beltrán Oscar E.Murillo-García Christian Miguel Pinto Jorge Brito Joseph Mark Shostell 

机构地区：[1]Laboratorio de Genética de Poblaciones Molecular-Biología Evolutiva,Departamento de Biología,Facultad de Ciencias,Pontificia Universidad Javeriana,BogotáDC 110231,Colombia [2]Grupo de Investigación en Ecología Animal,Departamento de Biología,Facultad de Ciencias Naturales y Exactas,Universidad del Valle,Apartado Aéreo,Cali 25360,Colombia [3]Instituto de Ciencias Biológicas,Escuela Politécnica Nacional,Quito 17012759,Ecuador [4]Instituto Nacional de Biodiversidad(INABIO),Quito 170135,Ecuador [5]Math,Science and Technology Department,University of Minnesota Crookston,Crookston,MN 56716,USA

出　　处：《Zoological Research》2021年第5期525-547,共23页动物学研究（英文）

摘　　要：The species within Xenarthra(sloths,anteaters,and armadillos)are quintessential South American mammals.Of the three groups,Vermilingua(anteaters)contains the fewest extant and paleontological species.Here,we sampled and sequenced the entire mitochondrial genomes(mitogenomes)of two Tamandua species(Tamandua tetradactyla and T.mexicana)(n=74)from Central and South America,as well as Myrmecophaga tridactyla(n=41)from South America.Within Tamandua,we detected three different haplogroups.The oldest(THI)contained many specimens with the T.tetradactyla morphotype(but also several with the T.mexicana morphotype)and originated in southeastern South America(currently Uruguay)before moving towards northern South America,where the THII haplogroup originated.THII primarily contained specimens with the T.mexicana morphotype(but also several with the T.tetradactyla morphotype)and was distributed in Central America,Colombia,and Ecuador.THI and THII yielded a genetic distance of 4%.THII originated in either northern South America or“in situ”in Central America with haplogroup THIII,which consisted of~50%T.mexicana and 50%T.tetradactyla phenotypes.THIII was mostly located in the same areas as THII,i.e.,Central America,Ecuador,and Colombia,though mainly in the latter.The three haplogroups overlapped in Colombia and Ecuador.Thus,T.tetradactyla and T.mexicana were not reciprocally monophyletic.For this reason,we considered that a unique species of Tamandua likely exists,i.e.,T.tetradactyla.In contrast to Tamandua,M.tridactyla did not show different morphotypes throughout its geographical range in the Neotropics.However,two very divergent genetic haplogroups(MHI and MHII),with a genetic distance of~10%,were detected.The basal haplogroup,MHI,originated in northwestern South America,whereas the more geographically derived haplogroup,MHII,overlapped with MHI,but also expanded into central and southern South America.Thus,Tamandua migrated from south to north whereas Myrmecophaga migrated from north to south.Our results also showed that

关 键 词：Anteaters Genetic diversity Mitogenomes Myrmecophaga NEOTROPICS PHYLOGEOGRAPHY Spatial structure Tamandua 

分 类 号：Q958[生物学—动物学]