Evolution of brain size and juvenile periods in primates

Walker, Robert and Burger, Oskar F. and Wagner, John and Von Rueden, Christopher R. (2006) Evolution of brain size and juvenile periods in primates. Journal of Human Evolution, 51 (5). pp. 480-489. ISSN 0047-2484. E-ISSN 1095-8606. (doi:https://doi.org/10.1016/j.jhevol.2006.06.002) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1016/j.jhevol.2006.06.002

Abstract

This paper assesses selective pressures that shaped primate life histories, with particular attention to the evolution of longer juvenile periods and increased brain sizes. We evaluate the effects of social complexity (as indexed by group size) and foraging complexity (as indexed by percent fruit and seeds in the diet) on the length of the juvenile period, brain size, and brain ratios (neocortex and executive brain ratios) while controlling for positive covariance among body size, life span, and home range. Results support strong components of diet, life span, and population density acting on juvenile periods and of home range acting on relative brain sizes. Social-complexity arguments for the evolution of primate intelligence are compelling given strong positive correlations between brain ratios and group size while controlling for potential confounding variables. We conclude that both social and ecological components acting at variable intensities in different primate clades are important for understanding variation in primate life histories.

Item Type: Article
Additional information: Unmapped bibliographic data: DA - 2006/// [EPrints field already has value set] DP - Google Scholar [Field not mapped to EPrints]
Uncontrolled keywords: Brain size; Neocortex ratio; Age at first reproduction; Comparative analysis; Juvenile primates; Life-history evolution; Socioecology
Subjects: Q Science
Divisions: Faculties > Social Sciences > School of Anthropology and Conservation > Biological Anthropology
Depositing User: Oskar Burger
Date Deposited: 11 Jan 2016 12:26 UTC
Last Modified: 12 Jan 2016 12:18 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/53662 (The current URI for this page, for reference purposes)
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