Article (Scientific journals)
Is it useful to view the brain as a secondary sexual characteristic?
Ball, Gregory F.; Balthazart, Jacques; McCarthy, Margaret M.
2014In Neuroscience and Biobehavioral Reviews, 46 Pt 4, p. 628-38
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Keywords :
Female competition; Organizing effects of steroids; Sex differences; Sexual differentiation; Sexual selection; Sexually differentiated gene expression
Abstract :
[en] Many sex differences in brain and behavior related to reproduction are thought to have evolved based on sexual selection involving direct competition for mates during male-male competition and female choice. Therefore, certain aspects of brain circuitry can be viewed as secondary sexual characteristics. The study of proximate causes reveals that sex differences in the brain of mammals and birds reflect organizational and activational effects of sex steroids as articulated by Young and collaborators. However, sex differences in brain and behavior have been identified in the cognitive domain with no obvious link to reproduction. Recent views of sexual selection advocate for a broader view of how intra-sexual selection might occur including such examples as competition within female populations for resources that facilitate access to mates rather than mating competition per se. Sex differences can also come about for other reasons than sexual selection and recent work on neuroendocrine mechanisms has identified a plethora of ways that the brain can develop in a sex specific manner. Identifying the brain as sexually selected requires careful hypothesis testing so that one can link a sex-biased aspect of a neural trait to a behavior that provides an advantage in a competitive mating situation.
Disciplines :
Animal psychology, ethology & psychobiology
Neurosciences & behavior
Author, co-author :
Ball, Gregory F.
Balthazart, Jacques  ;  Université de Liège > Département des sciences biomédicales et précliniques > Département des sciences biomédicales et précliniques
McCarthy, Margaret M.
Language :
English
Title :
Is it useful to view the brain as a secondary sexual characteristic?
Publication date :
2014
Journal title :
Neuroscience and Biobehavioral Reviews
ISSN :
0149-7634
eISSN :
1873-7528
Publisher :
Elsevier, United Kingdom
Volume :
46 Pt 4
Pages :
628-38
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
Copyright (c) 2014 Elsevier Ltd. All rights reserved.
Available on ORBi :
since 22 May 2015

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