The Evolutionary Diversification of the Centropagidae
Molecular Phylogenetics and Evolution 55 (2010) 418–430 Contents lists available at ScienceDirect Molecular Phylogenetics and Evolution journal homepage: www.elsevier.com/locate/ympev The evolutionary diversification of the Centropagidae (Crustacea, Calanoida): A history of habitat shifts Sarah J. Adamowicz a,*, Silvina Menu-Marque b, Stuart A. Halse c, Janet C. Topan a, Tyler S. Zemlak a, Paul D.N. Hebert a, Jonathan D.S. Witt d a Biodiversity Institute of Ontario, Department of Integrative Biology, 579 Gordon St., University of Guelph, Guelph, ON, Canada N1G 2W1 b Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, 4to. Piso, C1428 EHA, Buenos Aires, Argentina c Bennelongia Pty Ltd., P.O. Box 384, Wembley, WA 6913, Australia d Department of Biology, University of Waterloo, 200 University Avenue West, Waterloo, ON, Canada N2L 3G1 article info abstract Article history: The copepod family Centropagidae is widely distributed and occurs in marine, estuarine, freshwater, and Received 9 April 2009 inland saline settings. Molecular phylogenies based upon the 16S and 28S genes demonstrate a complex Revised 1 December 2009 biogeographic history, involving at least five independent invasions of continental waters from the sea. Accepted 4 December 2009 The first colonization was ancient, likely into part of Gondwanaland, and resulted in an inland radiation Available online 11 December 2009 in southern genera via both vicariance and subsequent habitat shifting among different types of conti- nental waters. Species occupying saline lakes are nested within freshwater clades, indicating invasion Keywords: of these habitats via fresh waters rather than directly from the ocean or from epicontinental seas.
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