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          Institute: MPI für Evolutionsbiologie     Collection: Evolutionary ecology     Display Documents

ID: 398754.0, MPI für Evolutionsbiologie / Evolutionary ecology
Desynchronising male and female reproductive seasonality: dynamics of male MHC-independent olfactory attractiveness in sticklebacks
Authors:Sommerfeld, R. D.; Boehm, T.; Milinski, M.
Date of Publication (YYYY-MM-DD):2008
Title of Journal:Ethology Ecology & Evolution
Issue / Number:4
Start Page:325
End Page:336
Review Status:not specified
Audience:Not Specified
Abstract / Description:Olfactory cues play an important role in the process of mate choice in the three-spined stickleback. It has been shown that females take the MHC-genetic make-up of males into account for their choice; however, it seems unlikely that the highly diverse MHC can signal the reproductive condition of the male. We followed 17 individual males for up to 17 weeks through different seasons (winter to summer) and reproductive conditions (non-nesting, nesting, no longer nesting) and measured their olfactory attractiveness for females independent of the olfactory MHC signal. We kept the level of female choice constant throughout the experiment by desynchronising their seasonality from that of the males. Our results confirm that the MHC signal by itself is not sufficient to elicit any female response; it needs an additional olfactory cue. We show here that this additional cue renders males highly attractive during nest maintenance. This attractiveness drops significantly as soon as the nest is abandoned. We discuss possible candidates for this pheromone.
Free Keywords:mate choice; MHC; olfaction; signalling; pheromones
External Publication Status:published
Document Type:Article
Affiliations:MPI für Evolutionsbiologie/Abt. Evolutionsökologie
External Affiliations:Department of Developmental Immunology, Max Planck Institute of Immunobiology, 79108 Freiburg, Germany
Identifiers:ISSN:0394-9370 (print) [ID-No:1]
ISSN:1828-7131 (online) [ID-No:2]
LOCALID:2662/S 38947 [Listen-Nummer/S-Nummer]
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