Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Biology
Integrating Environmental, Molecular, And Morphological Data To Unravel An Ice-Age Radiation Of Arctic-Alpine Campanula In Western North America, Eric G. Dechaine, Barry M. Wendling, Brenna R. Forester
Integrating Environmental, Molecular, And Morphological Data To Unravel An Ice-Age Radiation Of Arctic-Alpine Campanula In Western North America, Eric G. Dechaine, Barry M. Wendling, Brenna R. Forester
Biology Faculty and Staff Publications
Many arctic-alpine plant genera have undergone speciation during the Quaternary. The bases for these radiations have been ascribed to geographic isolation,abiotic and biotic differences between populations, and/or hybridization andpolyploidization. The Cordilleran Campanula L. (Campanulaceae Juss.), a monophyletic clade of mostly endemic arctic-alpine taxa from western North America, experienced a recent and rapid radiation. We set out to unravel the factors that likely influenced speciation in this group. To do so, we integrated environmental, genetic, and morphological datasets, tested biogeographic hypotheses, and analyzed the potential consequences of the various factors on the evolutionary history of the clade. We created paleodistribution models …
Behavioral, Molecular, And Morphological Evidence For A Hybrid Zone Between Chrysochus Auratus And C. Cobaltinus (Coleoptera: Chrysomelidae), Merrill A. Peterson, Susanne Dobler, Jeff Holland, Lauren Tantalo, Stefanie Locke
Behavioral, Molecular, And Morphological Evidence For A Hybrid Zone Between Chrysochus Auratus And C. Cobaltinus (Coleoptera: Chrysomelidae), Merrill A. Peterson, Susanne Dobler, Jeff Holland, Lauren Tantalo, Stefanie Locke
Biology Faculty and Staff Publications
In this article, we describe a hybrid zone between the chrysomelid beetles, Chrysochus auratus (F.), andC. cobaltinus LeConte, which have historically been considered as having allopatric distributions. By combining field studies with surveys of museum specimens, we documented that in western North America there are two regions in which these beetles are sympatric, and four additional regions in which populations of the two species are Washington, we found an ≈25 km wide area of sympatry in which the two species freely interbreed. Morphological and allozyme differences between the species allowed us to demonstrate that individuals with intermediate coloration in …