Primate population studies at Polonnaruwa. II. Heritability of body measurements in a natural population of toque macaques (Macaca sinica)

American Journal of Primatology - Tập 27 Số 2 - Trang 145-154 - 1992
James M. Cheverud1, Wolfgang P. J. Dittus2
1Department of Anatomy and Neurobiology, Washington University School of Medicine, St. Louis, Missouri
2Department of Zoological Research, National Zoological Park, Smithsonian Institution, Washington, D.C. and Institute of Fundamental Studies, Kandy, Sri Lanka.

Tóm tắt

AbstractThe heritability of quantitative traits, or the proportion of phenotypic variation due to additive genetic or heritable effects, plays an important role in determining the evolutionary response to natural selection. Most quantitative genetic studies are performed in the laboratory, due to difficulty in obtaining genealogical data in natural populations. Genealogies are known, however, from a unique 20‐year study of toque macaques (Macaca sinica) at Polonnaruwa, Sri Lanka. Heritability in this natural population was, therefore, estimated.Twenty‐seven body measurements representing the lengths and widths of the head, trunk, extremities, and tail were collected from 270 individuals. The sample included 172 offspring‐mother pairs from 39 different matrilineal families. Heritabilities were estimated using traditional mother‐offspring regression and maximum likelihood methods which utilize all genealogical relationships in the sample.On the common assumption that environmental (including social) factors affecting morphology were randomly distributed across families, all but two of the traits (25 of 27) were significantly heritable, with an average heritability of 0.51 for the mother‐offspring analysis and 0.56 for the maximum likelihood analysis. Heritability estimates obtained from the two analyses were very similar. We conclude that the Polonnaruwa macaques exhibit a comparatively moderate to high level of heritability for body form. © 1992 Wiley‐Liss, Inc.

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American Journal of Primatology

Tập 27 Số 2

145-154

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