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Sexual selection on cuticular hydrocarbons of male sagebrush crickets in the wild

Title data

Steiger, Sandra ; Ower, Geoffrey D. ; Stökl, Johannes ; Mitchell, Christopher ; Hunt, John ; Sakaluk, Scott K.:
Sexual selection on cuticular hydrocarbons of male sagebrush crickets in the wild.
In: Proceedings of the Royal Society of London B : Biological Sciences. Vol. 280 (2013) . - No. 20132353.
ISSN 1471-2954
DOI: https://doi.org/10.1098/rspb.2013.2353

Abstract in another language

Cuticular hydrocarbons (CHCs) play an essential role in mate recognition in insects but the form and intensity of sexual selection on CHCs has only been evaluated in a handful of studies, and never in a natural population. We quantified sexual selection operating on CHCs in a wild population of sagebrush crickets, a species in which nuptial feeding by females imposes an unambiguous phenotypic marker on males. Multivariate selection analysis revealed a saddle-shaped fitness surface, suggesting a complex interplay between the total abundance of CHCs and specific CHC combinations in their influence on female choice. The fitness surface resulting from two axes of disruptive selection reflected a trade-off between short- and long-chained CHCs, suggesting that males may be sacrificing some level of desiccation resistance in favour of increased attractiveness. There was a significant correlation between male body size and total CHC abundance, suggesting that male CHCs provide females with a reliable cue for maximizing benefits obtained from males. Notwithstanding the conspicuousness of males’ acoustic signals, our results suggest that selection imposed on males via female mating preferences may be far more complex than previously appreciated and operating in multiple sensory modalities.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER147479
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Animal Ecology II - Evolutionary Animal Ecology > Chair Animal Ecology II - Evolutionary Animal Ecology - Univ.-Prof. Dr. Sandra Steiger
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Result of work at the UBT: No
DDC Subjects: 500 Science
Date Deposited: 12 Apr 2019 14:22
Last Modified: 12 Apr 2019 14:22
URI: https://eref.uni-bayreuth.de/id/eprint/48366