Metabolic acceleration and the evolution of human brain size and life history.

Details

Serval ID
serval:BIB_ABA765F7553A
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Metabolic acceleration and the evolution of human brain size and life history.
Journal
Nature
Author(s)
Pontzer H., Brown M.H., Raichlen D.A., Dunsworth H., Hare B., Walker K., Luke A., Dugas L.R., Durazo-Arvizu R., Schoeller D., Plange-Rhule J., Bovet P., Forrester T.E., Lambert E.V., Thompson M.E., Shumaker R.W., Ross S.R.
ISSN
1476-4687 (Electronic)
ISSN-L
0028-0836
Publication state
Published
Issued date
2016
Peer-reviewed
Oui
Volume
533
Number
7603
Pages
390-392
Language
english
Notes
Publication types: Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.Publication Status: epublish
Abstract
Humans are distinguished from the other living apes in having larger brains and an unusual life history that combines high reproductive output with slow childhood growth and exceptional longevity. This suite of derived traits suggests major changes in energy expenditure and allocation in the human lineage, but direct measures of human and ape metabolism are needed to compare evolved energy strategies among hominoids. Here we used doubly labelled water measurements of total energy expenditure (TEE; kcal day(-1)) in humans, chimpanzees, bonobos, gorillas and orangutans to test the hypothesis that the human lineage has experienced an acceleration in metabolic rate, providing energy for larger brains and faster reproduction without sacrificing maintenance and longevity. In multivariate regressions including body size and physical activity, human TEE exceeded that of chimpanzees and bonobos, gorillas and orangutans by approximately 400, 635 and 820 kcal day(-1), respectively, readily accommodating the cost of humans' greater brain size and reproductive output. Much of the increase in TEE is attributable to humans' greater basal metabolic rate (kcal day(-1)), indicating increased organ metabolic activity. Humans also had the greatest body fat percentage. An increased metabolic rate, along with changes in energy allocation, was crucial in the evolution of human brain size and life history.
Pubmed
Web of science
Create date
17/05/2016 18:44
Last modification date
20/08/2019 16:15
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