Isolation by distance and vicariance drive genetic structure of a coral reef fish in the Pacific Ocean

Evolution; International Journal of Organic Evolution
Serge Planes, C Fauvelot

Abstract

We studied the genetic diversity of a coral reef fish species to investigate the origin of the differentiation. A total of 727 Acanthurus triostegus collected from 15 locations throughout the Pacific were analyzed for 20 polymorphic loci. The genetic structure showed limited internal disequilibrium within each population; 3.7% of the loci showed significant Hardy-Weinberg disequilibrium, mostly associated with Adh*, and we subsequently removed this locus from further analysis of geographic pattern. The genetic structure of A. triostegus throughout the tropical Pacific Ocean revealed a strong geographic pattern. Overall, there was significant population differentiation (multilocus F(ST) = 0.199), which was geographically structured according to bootstraps of neighbor-joining analysis on Nei's unbiased genetic distances and AMOVA analysis. The genetic structure revealed five geographic groups in the Pacific Ocean: western Pacific (Guam, Philippines, Palau, and Great Barrier Reef); central Pacific (Solomons, New Caledonia, and Fiji); and three groups made up of the eastern populations, namely Hawaiian Archipelago (north), Marquesas (equatorial), and southern French Polynesia (south) that incorporates Clipperton Island located in t...Continue Reading

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Citations

Jul 10, 2010·Proceedings of the National Academy of Sciences of the United States of America·Griet CasteleynWim Vyverman
Apr 9, 2010·The Journal of Heredity·Joshua S ReeceAllan Larson
Aug 12, 2006·Proceedings. Biological Sciences·H A Lessios, D R Robertson
Dec 31, 2009·The Biological Bulletin·Thomas F DudaAmber M Matheny
Mar 20, 2009·Ecology·M Aaron MacNeilSteven P Rushton
Sep 5, 2012·Molecular Ecology·Iliana B BaumsMichael E Hellberg
Sep 22, 2012·Molecular Ecology·O PueblaW O McMillan
Oct 12, 2012·Molecular Ecology·Eric D CrandallPaul H Barber
Dec 17, 2009·Evolution; International Journal of Organic Evolution·Matthieu LerayGiacomo Bernardi
Mar 11, 2015·Molecular Ecology·Michelle R GaitherLuiz A Rocha
Dec 6, 2011·Molecular Phylogenetics and Evolution·Víctor Hugo García-MerchánMarta Pascual
Jun 19, 2010·Molecular Phylogenetics and Evolution·Julien LorionSarah Samadi
Feb 21, 2006·The Journal of Heredity·Colin G RoseMatthew P Hare
Jul 29, 2009·Environmental Management·Brian D KellerRobert S Steneck
Oct 31, 2014·Proceedings. Biological Sciences·Erwan Delrieu-TrottinSerge Planes

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