Clemson University TigerPrints Publications Plant and Environmental Sciences 2015 On the origins of the insect fauna of California's Channel Islands: a comparative phylogeographic study of island beetles Michael S. Caterino Clemson University,
[email protected] Stylianos Chatzimanolis University of Tennessee at Chattanooga Maxi Polihronakis Richmond University of California - San Diego Follow this and additional works at: https://tigerprints.clemson.edu/ag_pubs Part of the Entomology Commons Recommended Citation Please use publisher's recommended citation. https://ojs.lib.byu.edu/spc/index.php/wnanmonos/article/view/34112 This is brought to you for free and open access by the Plant and Environmental Sciences at TigerPrints. It has been accepted for inclusion in Publications by an authorized administrator of TigerPrints. For more information, please contact
[email protected]. Monographs of the Western North American Naturalist 7, © 2015, pp. 276–296 ON THE ORIGINS OF THE INSECT FAUNA OF CALIFORNIA’S CHANNEL ISLANDS: A COMPARATIVE PHYLOGEOGRAPHIC STUDY OF ISLAND BEETLES Michael S. Caterino1,4, Stylianos Chatzimanolis2, and Maxi Polihronakis Richmond3 ABSTRACT.—California’s 8 Channel Islands host a large diversity of insects, the vast majority of which are shared with mainland southern California. The existence of a small number of recognized endemic species, however, sug- gest that, for some lineages, the islands are isolated enough to have permitted significant differentiation. Here we investigate the phylogeographic relationships of 4 beetle species (Thinopinus pictus, Hadrotes crassus, Hypocaccus lucidulus, and Nyctoporis carinata): all occurring on the mainland and on multiple (up to 6) Channel Islands. Sequences of the cytochrome oxidase I mitochondrial gene (and, for one species, an intron in the nuclear guftagu gene) are analyzed by Bayesian, haplotype network, and population genetic methods to examine relationships and gene flow among island and mainland populations.