Philopatry and reproductive success in Bornean orang-utans (Pongo pygmaeus)

B., Goossens and J., M. Setchell and S., S. Funks and L., Chikhl and A., Abulani and M., Ancrenaz and I., Lackman-Ancrenaz and M., W. Bruford (2006) Philopatry and reproductive success in Bornean orang-utans (Pongo pygmaeus). Molecular Ecology, 15 (9). pp. 2577-2588. ISSN 0962-1083

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Official URL: http://dx.doi.org/10.1111/j.1365-294X.2006.02952.x

Abstract

Behavioural observations suggest that orang-utans are semi-solitary animals with females being philopatric and males roaming more widely in search of receptive partners, leading to the prediction that females are more closely related than males at any given site. In contrast, our study presents evidence for male and female philopatry in the orang-utan. We examined patterns of relatedness and parentage in a wild orang-utan population in Borneo using noninvasively collected DNA samples from animals observed to defecate, and microsatellite markers to assess dispersal and mating strategies. Surprisingly, resident females were equally as related to other resident females (mean r(xy) = 0.303) as resident males were to other resident males (mean r(xy) = 0.305). Moreover, resident females were more related to each other and to the resident males than they were to nonresident females, and resident males were more related to each other (and resident females) than they were to nonresident males. We assigned genetic mothers to 12 individuals in the population, while sires could be identified for eight. Both flanged males and unflanged males achieved paternity, similar to findings reported for Sumatran orang-utans.

Item Type:Article
Uncontrolled Keywords:Dispersal, Faeces, Noninvasive genetics, Orang-utans, relatedness, Reproductive success
Subjects:?? QL700-739.8 ??
Divisions:SCHOOL > Institute for Tropical Biology and Conservation
ID Code:1112
Deposited By:IR Admin
Deposited On:03 Oct 2011 17:59
Last Modified:09 Jan 2017 15:20

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