Heterochrony in Hybrid Macaques

Nicole D. Taylor；Michael A. Schillaci

Ontogeny ； Growth allometry ； Hybridization ； Primates ； Heterosis

Zoological Studies

47卷6期（2008 / 11 / 01）

713 - 719

英文

In this report, we examine the effects of hybridization on growth allometry and the heterochronic growth process in a sample of hybrids of Macaca mulatta. Comparisons of regression parameters describing the linear relationships of age with body weight and body length, and the allometric relationship between body weight and body length indicate that hybridization may be associated with predisplacement (body weight and length to age) and hypermorphosis (length to weight) in males. Only the comparison of the male weight-to-age regression was statistically significant. Female hybrids exhibited a visible pattern of acceleration (body weight and length to age), or slight acceleration coupled with slight hypermorphosis (length to weight). None of the female patterns, however, were statistically significant. The results of our study indicate hybridization can affect growth patterns, although the magnitude of the difference varies and may be sex specific.

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