Refining the dual olfactory hypothesis: Pheromone reward and odour experience
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Other documents of the author: Martinez-Garcia, Fernando; Martínez-Ricós, Joana; Agustín-Pavón, Carmen; Martínez-Hernández, José; Novejarque, Amparo; Lanuza, Enrique
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http://dx.doi.org/10.1016/j.bbr.2008.10.002 |
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Title
Refining the dual olfactory hypothesis: Pheromone reward and odour experienceAuthor (s)
Date
2009-06Publisher
ElsevierISSN
0166-4328Type
info:eu-repo/semantics/articlePublisher version
http://www.sciencedirect.com/science/article/pii/S016643280800555XVersion
info:eu-repo/semantics/publishedVersionSubject
Abstract
In rodents, sexual advertisement and gender recognition are mostly (if not exclusively) mediated by chemosignals. Specifically, there is ample evidence indicating that female mice are ‘innately’ attracted by male ... [+]
In rodents, sexual advertisement and gender recognition are mostly (if not exclusively) mediated by chemosignals. Specifically, there is ample evidence indicating that female mice are ‘innately’ attracted by male sexual pheromones that have critical non-volatile components and are detected by the vomeronasal organ. These pheromones can only get access to the vomeronasal organ by active pumping mechanisms that require close contact with the source of the stimulus (e.g. urine marks) during chemoinvestigation.
We have hypothesised that male sexual pheromones are rewarding to female mice. Indeed, male-soiled bedding can be used as a reinforcer to induce conditioned place preference, provided contact with the bedding is allowed. The neural mechanisms of pheromone reward seem, however, different from those employed by other natural reinforcers, such as the sweetness or postingestive effects of sucrose.
In contrast to vomeronasal-detected male sexual pheromones, male-derived olfactory stimuli (volatiles) are not intrinsically attractive to female mice. However, after repeated exposure to male-soiled bedding, intact female mice develop an acquired preference for male odours. On the contrary, in females whose accessory olfactory bulbs have been lesioned, exposure to male-soiled bedding induces aversion to male odorants. These considerations, together with data on the different properties of olfactory and vomeronasal receptors, lead us to make a proposal for the complementary roles that the olfactory and vomeronasal systems play in intersexual attraction and in other forms of intra- or inter-species communication. [-]
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Behavioural Brain Research, v. 200, n. 2Rights
© 2008 Elsevier B.V. All rights reserved
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