Abstract
Abstract: Populations of Wood Turtles, Glyptemys insculpta, have steadily decreased over the past 30 yr because of habitat destruction and degradation. We sampled Wood Turtles from three areas in Michigan, USA, to characterize populations, quantify demographic trends, and measure the effect of declining population size on genetic diversity. Wood Turtle samples (n = 68) were collected from three rivers in the Lower Peninsula of Michigan and analyzed at nine microsatellite loci. Bayesian clustering programs identified two populations that split the three sampling sites into North and South populations. In both populations, analysis of genealogies estimated r < 0, indicating population decline. However, no evidence of a bottleneck was detected (P = 0.30 North, P = 0.29 South), and little evidence of inbreeding was observed (average North FIS = 0.25, average South FIS = 0.23), relative to other Emydidae populations. The high genetic diversity observed in the North and South populations is likely due to immigr...
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