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Multiple trans-Beringia dispersals of the barklouse genus Trichadenotecnum (Insecta: Psocodea: Psocidae)

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Title: Multiple trans-Beringia dispersals of the barklouse genus Trichadenotecnum (Insecta: Psocodea: Psocidae)
Authors: Yoshizawa, Kazunori Browse this author →KAKEN DB
Johnson, Kevin P. Browse this author
Yao, Izumi Browse this author →KAKEN DB
Casasola González, José Arturo Browse this author
Bess, Emilie Browse this author
García Aldrete, Alfonso Neri Browse this author
Keywords: Arcto-Tertiary relict biota
Isthmus of Panama
molecular phylogeny
molecular dating
ancestral area reconstruction
Issue Date: Jun-2017
Publisher: Oxford University Press
Journal Title: Biological Journal of the Linnean Society
Volume: 121
Issue: 3
Start Page: 501
End Page: 513
Publisher DOI: 10.1093/biolinnean/blx006
Abstract: The causes underlying disjunct distributions are of major importance in biogeography. Arcto-Tertiary relict biotas in the temperate northern hemisphere, which typically show disjunct distributions between Asia and the Nearctic region, are widely known, but often poorly understood examples of disjunct distributions. The distributional pattern of the barklouse genus Trichadenotecnum is an example of an Arcto-Tertiary relict, with centres of species diversity in Asia and Central America. We evaluated the potential causes of this disjunct distribution in Trichadenotecnum using a molecular phylogeny, divergence dating and ancestral area reconstruction. Phylogenetic analysis identified three separate clades of New World Trichadenotecnum, whereas all other groups were distributed in the Old World. Ancestral area and dating analyses recovered three independent events of trans-Beringian dispersal in the Oligocene to Miocene (27–15 Mya). The formation of two disjunct centres of diversity can be explained by the restriction of distributional areas to temperate refugia during the Quaternary glaciations (2.5–0.02 Mya). The South American Trichadenotecnum appeared to have arisen from two independent dispersal events in the Miocene (19–9 Mya). These estimated dispersal dates are much older than the generally assumed date (Pleistocene: c. 3 Mya) for the formation of the Isthmus of Panama.
Rights: This is a pre-copyedited, author-produced version of an article accepted for publication in Biological Journal of the Linnean Society following peer review. The version of record Volume 121, Issue 3, July 2017, Pages 501–513 is available online at:
Type: article (author version)
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 吉澤 和徳

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