Document Detail

Fitness cost of pheromone production in signaling female moths.
MedLine Citation:
PMID:  21644949     Owner:  NLM     Status:  In-Data-Review    
A secondary sexual character may act as an honest signal of the quality of the individual if the trait bears a cost and if its expression is phenotypically condition dependent. The cost of increasing the trait should be tolerable for individuals in good condition but not for those in a poor condition. The trait thus provides an honest signal of quality that enables the receiver to choose higher quality mates. Evidence for sex pheromones, which play a major role in shaping sexual evolution, inflicting a signaling cost is scarce. Here, we demonstrate that the amount of the major component of the pheromone in glands of Lobesia botrana (Lepidoptera) females at signaling time was significantly greater in large than in small females, that male moths preferred larger females as mates when responding to volatile signals, and small virgin females, but not large ones, exposed to conspecific pheromone, produced, when mated, significantly fewer eggs than nonexposed females. The latter indicates a condition-dependent cost of signaling. These results are in accordance with the predictions of condition-dependent honest signals. We therefore suggest that female signaling for males using sex pheromones bears a cost and thus calling may serve as honest advertisement for female quality.
Ally R Harari; Tirtza Zahavi; Denis Thiéry
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Publication Detail:
Type:  Journal Article     Date:  2011-03-16
Journal Detail:
Title:  Evolution; international journal of organic evolution     Volume:  65     ISSN:  1558-5646     ISO Abbreviation:  Evolution     Publication Date:  2011 Jun 
Date Detail:
Created Date:  2011-06-07     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0373224     Medline TA:  Evolution     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1572-82     Citation Subset:  IM    
Copyright Information:
© 2011 The Author(s). Evolution© 2011 The Society for the Study of Evolution.
Department of Entomology, the Volcani Center, Bet Dagan, 50250, Israel E-mail: Chemical Ecology, Lund University, Lund, Sweden Extension Service, Ministry of Agriculture, Kiryat Shmona, 10200, Israel E-mail: INRA, UMR 1065 Santé and Agroecologie du Vignoble (SAVE) BP 81, 33883 Villenave d'Ornon, France E-mail:
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