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Genetic diversity and genetic structure of an endemic Mexican Dusky Rattlesnake (Crotalus triseriatus) in a highly modified agricultural landscape: implications for conservation.

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      Abstract

      It is necessary to determine genetic diversity of fragmented populations in highly modified landscapes to understand how populations respond to land-use change. This information will help guide future conservation and management strategies. We conducted a population genetic study on an endemic Mexican Dusky Rattlesnake (Crotalus triseriatus) in a highly modified landscape near the Toluca metropolitan area, in order to provide crucial information for the conservation of this species. There was medium levels of genetic diversity, with a few alleles and genotypes. We identified three genetically differentiated clusters, likely as a result of different habitat cover type. We also found evidence of an ancestral genetic bottleneck and medium values of effective population size. Inbreeding coefficients were low and there was a moderate gene flow. Our results can be used as a basis for future research and C. triseriatus conservation efforts, particularly considering that the Trans-Mexican Volcanic Belt is heavily impacted by destructive land-use practices.

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      Affiliations
      [1 ] Centro de Investigación en Ciencias Biológicas Aplicadas, Universidad Autónoma del Estado de México, Instituto literario # 100, Colonia Centro, CP 50000, Toluca, Estado de México, Mexico.
      [2 ] Centro de Investigación en Ciencias Biológicas Aplicadas, Universidad Autónoma del Estado de México, Instituto literario # 100, Colonia Centro, CP 50000, Toluca, Estado de México, Mexico. tavomonroyvilchis@gmail.com.
      [3 ] Departamento de Producción Agrícola y Animal, Universidad Autónoma Metropolitana Xochimilco, Calz. Del Hueso 1100, 04960, Col. Villa Quietud, Mexico.
      Journal
      Genetica
      Genetica
      Springer Nature
      1573-6857
      0016-6707
      Dec 2015
      : 143
      : 6
      26497875
      10.1007/s10709-015-9868-8
      10.1007/s10709-015-9868-8

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