Cuticular hydrocarbon divergence in the jewel wasp Nasonia: Evolutionary shifts in chemical communication channels?

J. Buellesbach, Juergen Gadau, L. W. Beukeboom, F. Echinger, R. Raychoudhury, J. H. Werren, T. Schmitt

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

The evolution and maintenance of intraspecific communication channels constitute a key feature of chemical signalling and sexual communication. However, how divergent chemical communication channels evolve while maintaining their integrity for both sender and receiver is poorly understood. In this study, we compare male and female cuticular hydrocarbon (CHC) profiles in the jewel wasp genus Nasonia, analyse their chemical divergence and investigate their role as species-specific sexual signalling cues. Males and females of all four Nasonia species showed unique, nonoverlapping CHC profiles unambiguously separating them. Surprisingly, male and female phylogenies based on the chemical distances between their CHC profiles differed dramatically, where only male CHC divergence parallels the molecular phylogeny of Nasonia. In particular, N. giraulti female CHC profiles were the most divergent from all other species and very different from its most closely related sibling species N. oneida. Furthermore, although our behavioural assays indicate that female CHC profiles can generally be perceived as sexual cues attracting males in Nasonia, this function has apparently been lost in the highly divergent female N. giraulti CHC profiles. Curiously, N. giraulti males are still attracted to heterospecific, but not to conspecific female CHC profiles. We suggest that this striking discrepancy has been caused by an extensive evolutionary shift in female N. giraulti CHC profiles, which are no longer used as conspecific recognition cues. Our study constitutes the first report of an apparent abandonment of a sexual recognition cue that the receiver did not adapt to.

Original languageEnglish (US)
Pages (from-to)2467-2478
Number of pages12
JournalJournal of Evolutionary Biology
Volume26
Issue number11
DOIs
StatePublished - Nov 2013

Keywords

  • Evolution of chemical communication
  • Gas chromatography-mass spectrometry
  • Mate choice
  • Sex pheromones
  • Signal receiver co-evolution
  • Speciation
  • Species discrimination

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

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    Buellesbach, J., Gadau, J., Beukeboom, L. W., Echinger, F., Raychoudhury, R., Werren, J. H., & Schmitt, T. (2013). Cuticular hydrocarbon divergence in the jewel wasp Nasonia: Evolutionary shifts in chemical communication channels? Journal of Evolutionary Biology, 26(11), 2467-2478. https://doi.org/10.1111/jeb.12242