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AuthorSato J.J.
AuthorBradford T.M.
AuthorArmstrong K.N.
AuthorDonnellan S.C.
AuthorEchenique-Diaz L.M.
AuthorBegué-Quiala G.
AuthorGámez-Díez J.
AuthorYamaguchi N.
AuthorNguyen S.T.
AuthorKita M.
AuthorOhdachi S.D.
Available date2020-04-01T06:59:42Z
Publication Date2019
Publication NameMolecular Phylogenetics and Evolution
ResourceScopus
ISSN10557903
URIhttp://dx.doi.org/10.1016/j.ympev.2019.106605
URIhttp://hdl.handle.net/10576/13680
AbstractThe origin of the mammalian order Eulipotyphla has been debated intensively with arguments around whether they began diversifying before or after the Cretaceous-Palaeogene (K-Pg) boundary at 66 Ma. Here, we used an in-solution nucleotide capture method and next generation DNA sequencing to determine the sequence of hundreds of ultra-conserved elements (UCEs), and conducted phylogenomic and molecular dating analyses for the four extant eulipotyphlan lineages—Erinaceidae, Solenodontidae, Soricidae, and Talpidae. Concatenated maximum-likelihood analyses with single or partitioned models and a coalescent species-tree analysis showed that divergences among the four major eulipotyphlan lineages occurred within a short period of evolutionary time, but did not resolve the interrelationships among them. Alternative suboptimal phylogenetic hypotheses received consistently the same amount of support from different UCE loci, and were not significantly different from the maximum likelihood tree topology, suggesting the prevalence of stochastic lineage sorting. Molecular dating analyses that incorporated among-lineage evolutionary rate differences supported a scenario where the four eulipotyphlan families diversified between 57.8 and 63.2 Ma. Given short branch lengths with low support values, traces of rampant genome-wide stochastic lineage sorting, and post K-Pg diversification, we concluded that the crown eulipotyphlan lineages arose through a rapid diversification after the K-Pg boundary when novel niches were created by the mass extinction of species.
SponsorWe are grateful to Rafael Borroto-Páez, Jorge L. Delgado-Labañino,José Alvarez-Lemus for their help in sampling of solenodons in Cuba.We thank Kieren Mitchell for his advice on our next generation se-quencing experiments. We also appreciate Junji Moribe and AkioShinohara for providing the animal photos ofCrocidura dsinezumiandMogera wogura, respectively. This study was supported by theLeadership Fund of Hokkaido University (no grant number to SDO) andJSPS, Grants-in-Aid for Scientific Research (16H05655 to MK).
Languageen
PublisherAcademic Press Inc.
SubjectEulipotyphla
ILS
K-Pg boundary
Sequence capture
Solenodon
UCE
TitlePost K-Pg diversification of the mammalian order Eulipotyphla as suggested by phylogenomic analyses of ultra-conserved elements
TypeArticle
Volume Number141
dc.accessType Abstract Only


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