Literaturdatenbank
Literaturdatenbank |
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Kimble, S. J. A., Burke, R. L., Green, T., & Williams, R. N. , Parentage in the eastern box turtle terrapene c. carolina (poster). Unpublished paper presented at 2013 Box Turtle Conservation Workshop.
Added by: Admin (06 Jan 2014 18:24:44 UTC) |
| Resource type: Conference Paper BibTeX citation key: Kimble2013 View all bibliographic details  |
Categories: General Keywords: Chrysemys picta, Emydidae, Emydoidea blandingii, Emys orbicularis, Genetik - genetics, Glyptemys insculpta, Habitat - habitat, Nordamerika - North America, Schildkröten - turtles + tortoises, Terrapene carolina Creators: Burke, Green, Kimble, Williams Collection: 2013 Box Turtle Conservation Workshop |
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| Abstract |
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Multiple census studies of the eastern box turtle (Terrapene c. carolina) demonstrate that this species is experiencing steep population declines. Understanding basic biology of a declining species is an indispensible first step in reversing these trends. While much of the natural history of box turtles in known, key aspects remain poorly understood, leaving management plans incomplete. These include traits that can be best assessed at the genetic level, such as the mating system. Reproductive strategies such as multiple paternity drive up reproductive variance. High reproductive variance reduces the effective size of a population because it indicates that the actual number of parents contributing to the next generation is much reduced. Specifically, it means that every individual found in a census may not reproduce successfully in a given year, and management plans must allow for this phenomenon. High reproductive variance, therefore, can compound demographic declines, a phenomenon that must be incorporated into management plans for any such species. Multiple paternity is likely in box turtles as it has been documented in several confamilial species (e.g., Glyptemys insculpta, Emys blandingii, Emys orbicularis, Chrysemys picta) but frequency can vary greatly among closely related species and even among populations. This study will help parameterize effective population size estimates, inform captive rearing efforts, and develop hypotheses about the social mating system in box turtles.
Added by: Admin |