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  Desynchronising male and female reproductive seasonality: dynamics of male MHC-independent olfactory attractiveness in sticklebacks

Sommerfeld, R. D., Boehm, T., & Milinski, M. (2008). Desynchronising male and female reproductive seasonality: dynamics of male MHC-independent olfactory attractiveness in sticklebacks. Ethology Ecology & Evolution, 20(4), 325-336.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D715-7 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D716-5
Genre: Journal Article

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Sommerfeld_etal_2008_EEE.pdf (Publisher version), 155KB
 
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 Creators:
Sommerfeld, R. D.1, Author              
Boehm, T., Author
Milinski, M.1, Author              
Affiliations:
1Department Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445634              

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Free keywords: mate choice; MHC; olfaction; signalling; pheromones
 Abstract: 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.

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Language(s): eng - English
 Dates: 2008
 Publication Status: Published in print
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 Identifiers: eDoc: 398754
Other: 2662/S 38947
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Title: Ethology Ecology & Evolution
Source Genre: Journal
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Pages: - Volume / Issue: 20 (4) Sequence Number: - Start / End Page: 325 - 336 Identifier: ISSN: 0394-9370 (print)
ISSN: 1828-7131 (online)