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Historical biogeography of Eusattus muricatus (Coleoptera: Tenebrionidae) within the Great Basin, western North America

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Genetics of LeConte (Coleoptera: Tenebrionidae) populations within the Lahontan Basin and the Lahontan Trough of the Great Basin, western North America were assayed using protein electrophoresis. Two similar population phenograms were developed using neighbour-joining and maximum likelihood algorithms. An area cladogram was developed using geological data. Maximum likelihood phenogram and area cladogram were compared to test for congruence between geology and phylogeny. Pairwise regressions of estimated gene flow measures () yielded a significant relationship for populations within the Lahontan Basin but not for the Lahontan Trough. Protein molecular clock calculations showed that populations within the Lahontan Basin were primarily differentiating according to the dune/subbasin isolation events predicted by the area cladogram.

Die Genetik von Populationen von Eusattus muricatus LeConte (Coleoptera: Tenebrionidae) des Lahontan Trough in Great Basin (westliches Nordamerika) wurde mit Hilfe der Protein-Elektrophorese untersucht. Mit dem ‘Neighbor-Joining’-Verfahren und ‘Maximum-Likelihood’-Schaetzungen wurden zwei aehnliche Populationen-Phaenogramme entwickelt. Auf Basis geologischer Daten wurden ein ‘Area Cladogram’ entwickelt. ‘Maximum-Likelihood’-Phaenogramm und ‘Area Cladogram’ wurden miteinander verglichen, um eine Ubereinstimmung von Geologie und Phylogenie zu testen. Paarweise Regressionen von von Genfluss-Absschaetzungen (‘Nm’) ergaben eine signifikante Beziehung fur die Populationen im Lahontan Basin, aber nicht fur die im Lahontan Trough. Die Eichung der molekularen Uhr anhand von Proteindaten zeigte, dash sich die Populationen im Lahontan Basin vor allem anhand der Isolationsereignisse im ‘Dune/Subbasin’ untersucheiden lassen, dis durch das ‘Area cladogram’ bereits vorausgesagt wurden.
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Document Type: Research Article

Affiliations: Department of Biology/MS 314, University of Nevada, Reno, NV 89557 U.S.A.

Publication date: 01 September 1998

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