Molecular phylogeny of Central and South American slider turtles: implications for biogeography and systematics (Testudines: Emydidae: Trachemys)

By U. Fritz, H. Stuckas, Mario Vargas-Ramírez, A. Hundsdörfer, J. Maran, M. Päckert. 2012

90 citations recorded by the source corpus.

We analyse phylogeny, systematics and biogeography of slider turtles (Trachemys spp.) using sequence data of four mitochondrial genes (3242 bp) and five nuclear loci (3396 bp) of most South American and southern Central American taxa and representatives of northern Central American, West Indian and North American slider species (16 species and subspecies) and allied North American species (genera Chrysemys, Deirochelys, Graptemys, Malaclemys, Pseudemys). By applying maximum likelihood, relaxed molecular clock and ancestral range analyses, we provide evidence for two successive colonizations of South America by slider turtles. In addition, we show that the current species delineation of Central and South American slider turtles is incorrect. Our data suggest that Trachemys grayi is a distinct polytypic species that embraces, besides the nominotypical subspecies, T. g. emolli and T. g. panamensis. Trachemys ornata is also polytypic with the subspecies T. o. ornata, T. o. callirostris, T. o. cataspila, T. o. chichiriviche and T. o. venusta. Moreover, T. adiutrix should be regarded as a subspecies of T. dorbigni. All studied Trachemys species are inferred to have originated in the Late Miocene to Early Pliocene. The ancestor of the two subspecies of T. dorbigni colonized South America most probably prior to the establishment of the land bridge connecting Central and South America, whereas the two South American subspecies of T. ornata represent a younger independent immigration wave from Central America.

Subfields: Global and Planetary Change, Nature and Landscape Conservation

View Paper: https://www.semanticscholar.org/paper/e1bd40e550799b5d05bd7ee66eccda1937bf974b

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In Global and Planetary Change

In Nature and Landscape Conservation

Citations in the corpus

Is the island rule general? Turtles disagree (2014, methodology): “…phylogenetic tree for all turtles by combining recently published trees (see Iverson et al., 2007), and relying largely on the comprehensive tree published by Thomson & Shaffer (2010), to which we added missing species from other, recent studies (e.g. Stuckas & Fritz, 2011; Fritz et al., 2012).”