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Inferring Pongo conservation units: a perspective based on microsatellite and mitochondrial DNA analyses
Sreetharan Kanthaswamy1, Jennifer D Kurushima, David Glenn Smith
1California National Primate Research Center and the Department of Anthropology, University of California, One Shields Avenue, Davis, CA 95616, USA. skanthaswamy@ucdavis.edu
Primates; Journal of Primatology
|June 20, 2006
Summary
Genetic analysis reveals two distinct clusters within Bornean orangutans, but they do not qualify as separate management units (MUs). Sumatran and Bornean orangutans are recommended as distinct MUs due to limited genetic distinction.
Area of Science:
- Primatology
- Conservation Genetics
- Molecular Ecology
Background:
- Defining evolutionarily significant units (ESUs) and management units (MUs) is crucial for effective orangutan conservation.
- Understanding genetic relationships helps assess population structure and distinctness.
Purpose of the Study:
- To determine genetic relationships among Sumatran and Bornean orangutan subpopulations.
- To test hypotheses on population structure within Borneo and genetic distinction between orangutan taxa.
Main Methods:
- Analysis of partial sequences from four mitochondrial genes.
- Genotyping of nine autosomal microsatellite loci in 70 orangutans.
Main Results:
- Bornean orangutans comprise two genetic clusters: western and eastern clades.
- Distinct mtDNA and nuclear genetic distributions observed, attributed to genetic drift.
- Bornean clusters lack demographic independence and show moderate genetic differentiation, not warranting separate MU status.
- High overall genetic diversity in Borneo, with limited impact from recent habitat fragmentation.
- Sumatran and Bornean orangutan mtDNA are not strictly reciprocally monophyletic.
Conclusions:
- Bornean orangutan clusters do not meet criteria for separate management units (MUs).
- Sumatran and Bornean orangutans should be treated as separate MUs.
- Inter-island translocation of orangutans should be minimized unless essential.
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