Genetic diversity and population genetic structure of the Wood Turtle (Glyptemys insculpta) at Delaware Water Gap National Recreation Area, USA |
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| Authors: | Christina M Castellano John L Behler George Amato |
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| Institution: | (1) Department of Biological Sciences, Fordham University, Bronx, NY 10456, USA;(2) Department of Herpetology, Wildlife Conservation Society, Bronx, NY 10456, USA;(3) Center for Conservation Genetics and the Sackler Institute for Comparative Genomics, American Museum of Natural History, New York, NY 10024, USA;(4) Present address: Institute for Applied Ecology, University of Canberra, Bruce, ACT, 2601, Australia |
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| Abstract: | Glyptemys insculpta is considered to be one of the most endangered freshwater turtles in North America. Here microsatellite markers were employed
to investigate the genetic variation and population structure of G. insculpta at Delaware Water Gap National Recreation Area (USA). Seven microsatellites revealed high allelic variation with 13–30 alleles
per locus. Observed and expected heterozygosities per locus ranged from 0.875–0.925 to 0.888–0.952, respectively. Pairwise
estimates of population structure (θ) ranged from 0.000–0.013 to θ estimated over all loci and aggregations was not significantly different from zero. Gene flow (Nm) was high and ranged from 19 migrants per generation to infinity in pairwise comparisons. No significant relationship between
geographic distance and genetic distance was detected. These data indicate that G. insculpta at DEWA represent a single, genetically diverse management unit for conservation. |
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