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Author
S.A. Hosseini
M. van Wijk
G. Ke
S.H. Goldansaz
C. Schal
A.T. Groot
Date
9-12-2016
Title
Experimental evidence for chemical mate guarding in a moth
Journal
Scientific Reports
Volume
6
Article number
38567
Number of pages
6
Document type
Article
Faculty
Faculty of Science (FNWI)
Institute
Institute for Biodiversity and Ecosystem Dynamics (IBED)
Abstract
In polyandrous species, males seek to maximize their reproductive output by monopolizing their mate. Often the male transfers substances to the female that suppress her sexual receptivity or antagonize the behavior of competing males; both are usually transferred in seminal fluids and represent forms of chemical mate guarding. In moths, more long-range female sex pheromones have been identified than in any other animal group, and males often display with close-range sex pheromones, yet odor-based post-copulatory mate guarding has not been described in moths so far. We tested the hypothesis that the male sex pheromone in the noctuid moth Heliothis virescens perfumes the female and functions as an anti-aphrodisiac. Indeed, virgin females perfumed with male pheromone extract, or with its main component, mated significantly less than control virgin females, and this effect persisted for two successive nights. This chemical mate guarding strategy was disadvantageous for H. virescens females, because the reproductive output of twice-mated females was significantly higher than that of once-mated females. Since the female and male sex pheromones are biosynthetically related in this and other moth species, chemical mate guarding may also impose selection pressure on the long-range female sex pheromone channel and consequently affect the evolution of sexual communication.
URL
go to publisher's site
Language
English
Permalink
http://hdl.handle.net/11245.1/42ce9f74-43eb-4566-9a05-6ca3d66b2be6
Downloads
  • srep38567

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