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Int J Primatol. 2008;29(5):1295-1311.

INTERSPECIES HYBRIDIZATION AND THE STRATIFICATION OF NUCLEAR GENETIC VARIATION OF RHESUS (MACACA MULATTA) AND LONG-TAILED MACAQUES (MACACA FASCICULARIS).

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  • 1Department of Anthropology, University of California-Davis, Davis, California.

Abstract

Genotypes for 13 short tandem repeats (STRs) were used to assess the genetic diversity within and differentiation among populations of rhesus macaques (Macaca mulatta) from mainland Asia and long-tailed macaques (M. fascicularis) from mainland and insular Southeast Asia. These animals were either recently captured in the wild or derived from wild-caught founders maintained in captivity for biomedical research.A large number of alleles is shared between the two macaque species but a significant genetic division between them persists. This distinction is more clear-cut among populations that are not, or are unlikely to have recently been, geographically contiguous. Our results suggest there has been significant interspecies nuclear gene flow between rhesus macaques and long-tailed macaques on the mainland. Comparisons of mainland and island populations of long-tailed macaques reflect marked genetic subdivisions due to barriers to migration. Geographic isolation has restricted gene flow, allowing island populations to become subdivided and genetically differentiated. Indonesian long-tailed macaques show evidence of long-term separation and genetic isolation from the mainland populations, while long-tailed macaques from the Philippines and Mauritius both display evidence of founder effects and subsequent isolation, with the impact from genetic drift being more profound in the latter.

PMID:
19122840
[PubMed]
PMCID:
PMC2583101
Free PMC Article

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