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Fitness cost of pheromone production in signaling female moths

Harari, Ally LU ; Zahavi, Tirtza and Thiery, Denis (2011) In Evolution 65(6). p.1572-1582
Abstract
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... (More)
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. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Behavior, fitness, selection-sexual
in
Evolution
volume
65
issue
6
pages
1572 - 1582
publisher
Wiley-Blackwell
external identifiers
  • wos:000291270300005
  • scopus:79958028866
ISSN
1558-5646
DOI
10.1111/j.1558-5646.2011.01252.x
language
English
LU publication?
yes
id
c6d78e09-c142-4a6c-8636-f4f16dcf7579 (old id 1985461)
date added to LUP
2011-07-06 13:50:14
date last changed
2017-11-12 03:47:40
@article{c6d78e09-c142-4a6c-8636-f4f16dcf7579,
  abstract     = {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.},
  author       = {Harari, Ally and Zahavi, Tirtza and Thiery, Denis},
  issn         = {1558-5646},
  keyword      = {Behavior,fitness,selection-sexual},
  language     = {eng},
  number       = {6},
  pages        = {1572--1582},
  publisher    = {Wiley-Blackwell},
  series       = {Evolution},
  title        = {Fitness cost of pheromone production in signaling female moths},
  url          = {http://dx.doi.org/10.1111/j.1558-5646.2011.01252.x},
  volume       = {65},
  year         = {2011},
}