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Primates. 2002 Oct;43(4):315-27.

Population subdivision and gene flow among wild orangutans.

Author information

1
Department of Internal Medicine, University of Iowa College of Medicine, Iowa City, Iowa 52246, USA. sreetharan-kanthaswamy@uiowa.edu

Abstract

Genetic variability among populations of orangutans from Borneo and Sumatra was assessed using seven SSR loci. Most SSR loci were highly polymorphic and their allele frequencies exhibited substantial variation across subpopulations. While significant genetic subdivision was observed among the island populations, genetic distance did not increase with geographic distance and sufficient gene flow persists to prevent marked genetic subdivision. Since it is unlikely that the Bornean Orangutans dispersed naturally among locations separated by such formidable geographic barriers, human assistance might already have altered their genetic structure. Our data suggests that there may be at least two subspecific clades of orangutans within Borneo while Central Kalimantan animals may have become more genetically related to animals in Sumatra due to human intervention.

PMID:
12426465
DOI:
10.1007/bf02629605
[Indexed for MEDLINE]

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