Smarter foragers do not forage smarter: a test of the diet hypothesis for brain expansion
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Smarter foragers do not forage smarter : a test of the diet hypothesis for brain expansion. / Hirsch, Ben T.; Kays, Roland; Alavi, Shauhin; Caillaud, Damien; Havmoller, Rasmus; Mares, Rafael; Crofoot, Margaret.
I: Proceedings of the Royal Society B: Biological Sciences, Bind 291, Nr. 2023, 20240138, 2024.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Smarter foragers do not forage smarter
T2 - a test of the diet hypothesis for brain expansion
AU - Hirsch, Ben T.
AU - Kays, Roland
AU - Alavi, Shauhin
AU - Caillaud, Damien
AU - Havmoller, Rasmus
AU - Mares, Rafael
AU - Crofoot, Margaret
N1 - Publisher Copyright: © 2024 The Author(s) Published by the Royal Society. All rights reserved.
PY - 2024
Y1 - 2024
N2 - A leading hypothesis for the evolution of large brains in humans and other species is that a feedback loop exists whereby intelligent animals forage more efficiently, which results in increased energy intake that fuels the growth and maintenance of large brains. We test this hypothesis for the first time with high-resolution tracking data from four sympatric, frugivorous rainforest mammal species (42 individuals) and drone-based maps of their predominant feeding trees. We found no evidence that larger-brained primates had more efficient foraging paths than smaller brained procyonids. This refutes a key assumption of the fruit-diet hypothesis for brain evolution, suggesting that other factors such as temporal cognition, extractive foraging or sociality have been more important for brain evolution.
AB - A leading hypothesis for the evolution of large brains in humans and other species is that a feedback loop exists whereby intelligent animals forage more efficiently, which results in increased energy intake that fuels the growth and maintenance of large brains. We test this hypothesis for the first time with high-resolution tracking data from four sympatric, frugivorous rainforest mammal species (42 individuals) and drone-based maps of their predominant feeding trees. We found no evidence that larger-brained primates had more efficient foraging paths than smaller brained procyonids. This refutes a key assumption of the fruit-diet hypothesis for brain evolution, suggesting that other factors such as temporal cognition, extractive foraging or sociality have been more important for brain evolution.
KW - brain size
KW - evolution
KW - foraging
KW - intelligence
KW - mammal
U2 - 10.1098/rspb.2024.0138
DO - 10.1098/rspb.2024.0138
M3 - Journal article
C2 - 38808448
AN - SCOPUS:85194881966
VL - 291
JO - Proceedings of the Royal Society B: Biological Sciences
JF - Proceedings of the Royal Society B: Biological Sciences
SN - 0962-8452
IS - 2023
M1 - 20240138
ER -
ID: 395139736