Web of Science: 20 citations, Scopus: 23 citations, Google Scholar: citations,
Environmental variation and the evolution of large brains in birds
Sayol i Altarriba, Ferran (Centre de Recerca Ecològica i Aplicacions Forestals)
Maspons, Joan (Centre de Recerca Ecològica i Aplicacions Forestals)
Lapiedra i González, Oriol (Harvard University. Department of Organismic and Evolutionary Biology)
Iwaniuk, Andrew N. (University of Lethbridge. Department of Neuroscience)
Székely, Tamás (University of Bath. Department of Biology and Biochemistry)
Sol, Daniel (Centre de Recerca Ecològica i Aplicacions Forestals)

Date: 2016
Abstract: Environmental variability has long been postulated as a major selective force in the evolution of large brains. However, assembling evidence for this hypothesis has proved difficult. Here, by combining brain size information for over 1,200 bird species with remote-sensing analyses a to estimate temporal variation in ecosystem productivity, we show that larger brains (relative to body size) are more likely to occur in species exposed to larger environmental variation throughout their geographic range. Our reconstructions of evolutionary trajectories are consistent with the hypothesis that larger brains (relative to body size) evolved when the species invaded more seasonal Regions. However, the alternative—that the species already possessed larger brains when they invaded more seasonal regions—cannot be completely ruled out. Regardless of the exact mechanism, our findings provide strong empirical support for the association between large brains and environmental variability.
Note: Número d'acord de subvenció MINECO/CGL2013-47448-P
Rights: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. Creative Commons
Language: Anglès.
Document: article ; recerca ; publishedVersion
Subject: Animal migration ; Behavioural ecology ; Macroecology ; Phylogenetics
Published in: Nature communications, Vol. 7 (des. 2016) , art. 13971, ISSN 2041-1723

DOI: 10.1038/ncomms13971
PMID: 28004733


8 p, 752.8 KB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (scientific output) > Experimental sciences > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Articles > Research articles
Articles > Published articles

 Record created 2018-01-09, last modified 2019-02-13



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