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  • Title: Genetic diversity in black howler monkeys (Alouatta pigra) from Belize.
    Author: James RA, Leberg PL, Quattro JM, Vrijenhoek RC.
    Journal: Am J Phys Anthropol; 1997 Mar; 102(3):329-36. PubMed ID: 9098502.
    Abstract:
    To assess the level of genetic variation in a threatened black howler monkey (Alouatta pigra) population, we examined 36 allozyme loci and restriction fragment profiles of mitochondrial DNA (mtDNA). Mean heterozygosity at allozyme loci was only 0.021 and 5.6 percent of the loci were polymorphic. Analyses of mtDNA also revealed low genetic diversity compared with other primates. F-statistics revealed no significant genetic heterogeneity among troops within the Bermudian Landing preserve, but did indicate a deficiency of heterozygotes at one of the two loci. We explore several explanations for this result, which is unexpected in a socially structured primate. Low genetic diversity in this population may reflect its history of demographic bottlenecks.
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