Life in the slow lane revisited: Ontogenetic separation between chimpanzees and humans

Walker, Robert and Hill, Kim and Burger, Oskar F. and Hurtado, A. Magdalena (2006) Life in the slow lane revisited: Ontogenetic separation between chimpanzees and humans. American Journal of Physical Anthropology, 129 (4). pp. 577-583. ISSN 0002-9483. E-ISSN 1096-8644. (doi:https://doi.org/10.1002/ajpa.20306) (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/10.1002/ajpa.20306

Abstract

This study investigates the evolution of human growth by analyzing differences in body mass growth trajectories among three populations: the Ache of eastern Paraguay, the US (NHANES, 1999–2000), and captive chimpanzees. The relative growth statistic “A” from the mammalian growth law is allowed to vary with age and proves useful for comparing growth across different ages, populations, and species. We demonstrate ontogenetic separation between chimpanzees and humans, and show that interspecific differences are robust to variable environmental conditions. The human pattern of slow growth during the lengthened period from weaning to the beginning of the adolescent growth spurt is found among the Ache (low energy availability and high disease load) and also in the US (high energy availability and low disease load). The human growth pattern contrasts with that of the chimpanzee, where absolute growth rates and relative “A” values are faster and less prolonged. We suggest that selection has acted to decrease human growth rates to allow more time for increased cognitive development with lower body-maintenance costs.

Item Type: Article
Additional information: Unmapped bibliographic data: DA - 2006/// [EPrints field already has value set] ST - Life in the slow lane revisited [Field not mapped to EPrints] DP - Google Scholar [Field not mapped to EPrints]
Uncontrolled keywords: growth rates; Ache foragers; chimpanzees; human life history
Subjects: Q Science
Divisions: Faculties > Social Sciences > School of Anthropology and Conservation > Biological Anthropology
Depositing User: Oskar Burger
Date Deposited: 11 Jan 2016 12:22 UTC
Last Modified: 12 Jan 2016 12:29 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/53660 (The current URI for this page, for reference purposes)
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