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Direct and indirect selection in moth pheromone evolution: population genetical simulations of asymmetric sexual interactions

Bengtsson, Bengt Olle LU and Löfstedt, Christer LU (2007) In Biological Journal of the Linnean Society 90(1). p.117-123
Abstract
Female moths generally use pheromones to attract males. Normally, all females in a population produce a specific chemical blend with only a limited variance, and the local males are highly attracted to this blend. To better understand the direct and indirect selective forces acting on this communication system, where, unusually, it is the reproductively limited sex that signals for matings, a population genetical model has been constructed and numerically analysed. Basic to the model is the assumption that the pheromone attraction system functions asymmetrically, leading to strong sexual selection between males but no direct sexual selection between females. Evolutionary simulations using the model show that sexual selection in males... (More)
Female moths generally use pheromones to attract males. Normally, all females in a population produce a specific chemical blend with only a limited variance, and the local males are highly attracted to this blend. To better understand the direct and indirect selective forces acting on this communication system, where, unusually, it is the reproductively limited sex that signals for matings, a population genetical model has been constructed and numerically analysed. Basic to the model is the assumption that the pheromone attraction system functions asymmetrically, leading to strong sexual selection between males but no direct sexual selection between females. Evolutionary simulations using the model show that sexual selection in males causes an indirect stabilizing selection on the pheromone blends produced by females. Thus, a more narrow range of pheromone variation is selected for, even in the absence of female sexual selection. The strength of the selection is analysed, and it is suggested that this indirect stabilizing selection becomes particularly important in situations where geographically adjacent populations have evolved different pheromone blends. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
computer simulation, sexual selection, evolutionary stability
in
Biological Journal of the Linnean Society
volume
90
issue
1
pages
117 - 123
publisher
Linnean Society of London
external identifiers
  • wos:000243402100010
  • scopus:33846139609
ISSN
0024-4066
DOI
10.1111/j.1095-8312.2007.00715.x
project
Evolutionary mechanisms of pheromone divergence in Lepidoptera
language
English
LU publication?
yes
id
45b3a197-ca51-407f-8caa-247ddcc88697 (old id 167226)
date added to LUP
2007-06-27 08:08:14
date last changed
2017-01-01 04:45:30
@article{45b3a197-ca51-407f-8caa-247ddcc88697,
  abstract     = {Female moths generally use pheromones to attract males. Normally, all females in a population produce a specific chemical blend with only a limited variance, and the local males are highly attracted to this blend. To better understand the direct and indirect selective forces acting on this communication system, where, unusually, it is the reproductively limited sex that signals for matings, a population genetical model has been constructed and numerically analysed. Basic to the model is the assumption that the pheromone attraction system functions asymmetrically, leading to strong sexual selection between males but no direct sexual selection between females. Evolutionary simulations using the model show that sexual selection in males causes an indirect stabilizing selection on the pheromone blends produced by females. Thus, a more narrow range of pheromone variation is selected for, even in the absence of female sexual selection. The strength of the selection is analysed, and it is suggested that this indirect stabilizing selection becomes particularly important in situations where geographically adjacent populations have evolved different pheromone blends.},
  author       = {Bengtsson, Bengt Olle and Löfstedt, Christer},
  issn         = {0024-4066},
  keyword      = {computer simulation,sexual selection,evolutionary stability},
  language     = {eng},
  number       = {1},
  pages        = {117--123},
  publisher    = {Linnean Society of London},
  series       = {Biological Journal of the Linnean Society},
  title        = {Direct and indirect selection in moth pheromone evolution: population genetical simulations of asymmetric sexual interactions},
  url          = {http://dx.doi.org/10.1111/j.1095-8312.2007.00715.x},
  volume       = {90},
  year         = {2007},
}