Microsatellite Analysis of Population Structure in the Endangered Hawaiian Monk Seal

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2001
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Kretzmann, Maria B.
Gemmell, Neil J.
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The endangered Hawaiian monk seal breeds at six locations in the northwestern Hawaiian Islands. To determine whether significant genetic differentiation exists among these sites, we used microsatellite loci to examine the monk seal population structure at the five largest breeding colonies. Of 27 loci isolated from other seal species, only 3 were polymorphic in an initial screening of one individual from each breeding site. Only two alleles were found at each of these 3 loci in samples of 46 108 individuals. This extremely low variation is consistent with other measures of genetic variability in this species and is probably the result of a recent severe population bottleneck, combined with a long-term history of small population sizes. Although the smallest monk seal subpopulation in this study (Kure Atoll) showed some evidence of heterozygote deficit, possibly indicative of inbreeding, the next smallest (Pearl and Hermes Reef) had an apparent excess of heterozygous individuals. Genetic differentiation was detected between the two subpopulations at extreme ends of the range (Kure and French Frigate Shoals). This trend was significant only at the microsatellite locus for which we had the largest sample size (Hg6.3:RST= 0.206, p=0.002; allelic goodness of fit Gh=15.412, p

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ISO 690KRETZMANN, Maria B., Neil J. GEMMELL, Axel MEYER, 2001. Microsatellite Analysis of Population Structure in the Endangered Hawaiian Monk Seal. In: Conservation Biology. 2001, 15(2), pp. 457-466. ISSN 0888-8892. eISSN 1523-1739. Available under: doi: 10.1046/j.1523-1739.2001.015002457.x
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@article{Kretzmann2001Micro-7131,
  year={2001},
  doi={10.1046/j.1523-1739.2001.015002457.x},
  title={Microsatellite Analysis of Population Structure in the Endangered Hawaiian Monk Seal},
  number={2},
  volume={15},
  issn={0888-8892},
  journal={Conservation Biology},
  pages={457--466},
  author={Kretzmann, Maria B. and Gemmell, Neil J. and Meyer, Axel}
}
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