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Female polymorphisms, sexual conflict and limits to speciation processes in animals

Svensson, Erik LU ; Abbott, Jessica LU ; Gosden, Thomas LU and Coreau, Audrey (2009) In Evolutionary Ecology 23(1). p.93-108
Abstract
Heritable and visually detectable polymorphisms, such as trophic polymorphisms, ecotypes, or colour morphs, have become classical model systems among ecological geneticists and evolutionary biologists. The relatively simple genetic basis of many polymorphisms (one or a few loci) makes such species well-suited to study evolutionary processes in natural settings. More recently, polymorphic systems have become popular when studying the early stages of the speciation process and mechanisms facilitating or constraining the evolution of reproductive isolation. Although colour polymorphisms have been studied extensively in the past, we argue that they have been underutilized as model systems of constraints on speciation processes. Colouration... (More)
Heritable and visually detectable polymorphisms, such as trophic polymorphisms, ecotypes, or colour morphs, have become classical model systems among ecological geneticists and evolutionary biologists. The relatively simple genetic basis of many polymorphisms (one or a few loci) makes such species well-suited to study evolutionary processes in natural settings. More recently, polymorphic systems have become popular when studying the early stages of the speciation process and mechanisms facilitating or constraining the evolution of reproductive isolation. Although colour polymorphisms have been studied extensively in the past, we argue that they have been underutilized as model systems of constraints on speciation processes. Colouration traits may function as signalling characters in sexual selection contexts, and the maintenance of colour polymorphisms is often due to frequency-dependent selection. One important issue is why there are so few described cases of female polymorphisms. Here we present a synthetic overview of female sexual polymorphisms, drawing from our previous work on female colour polymorphisms in lizards and damselflies. We argue that female sexual polymorphisms have probably been overlooked in the past, since workers have mainly focused on male-male competition over mates and have not realized the ecological sources of genetic variation in female fitness. Recent experimental evolution studies on fruit flies (Drosophila melanogaster) have demonstrated significant heritable variation among female genotypes in the fitness costs of resistance or tolerance to male mating harassment. In addition, female-female competition over resources could also generate genetic variation in female fitness and promote the maintenance of female sexual polymorphisms. Female sexual polymorphisms could subsequently either be maintained as intrapopulational polymorphisms or provide the raw material for the formation of new species. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Speciation, Sexual conflict, mating harassment, Male, Female resistance, Antagonistic coevolution, Female competition
in
Evolutionary Ecology
volume
23
issue
1
pages
93 - 108
publisher
Springer
external identifiers
  • wos:000262504800007
  • scopus:58349113023
ISSN
1573-8477
DOI
10.1007/s10682-007-9208-2
language
English
LU publication?
yes
id
4146b234-100f-41b5-94d6-e0540a3a9db8 (old id 1312676)
date added to LUP
2009-03-13 12:46:37
date last changed
2017-10-22 04:20:00
@article{4146b234-100f-41b5-94d6-e0540a3a9db8,
  abstract     = {Heritable and visually detectable polymorphisms, such as trophic polymorphisms, ecotypes, or colour morphs, have become classical model systems among ecological geneticists and evolutionary biologists. The relatively simple genetic basis of many polymorphisms (one or a few loci) makes such species well-suited to study evolutionary processes in natural settings. More recently, polymorphic systems have become popular when studying the early stages of the speciation process and mechanisms facilitating or constraining the evolution of reproductive isolation. Although colour polymorphisms have been studied extensively in the past, we argue that they have been underutilized as model systems of constraints on speciation processes. Colouration traits may function as signalling characters in sexual selection contexts, and the maintenance of colour polymorphisms is often due to frequency-dependent selection. One important issue is why there are so few described cases of female polymorphisms. Here we present a synthetic overview of female sexual polymorphisms, drawing from our previous work on female colour polymorphisms in lizards and damselflies. We argue that female sexual polymorphisms have probably been overlooked in the past, since workers have mainly focused on male-male competition over mates and have not realized the ecological sources of genetic variation in female fitness. Recent experimental evolution studies on fruit flies (Drosophila melanogaster) have demonstrated significant heritable variation among female genotypes in the fitness costs of resistance or tolerance to male mating harassment. In addition, female-female competition over resources could also generate genetic variation in female fitness and promote the maintenance of female sexual polymorphisms. Female sexual polymorphisms could subsequently either be maintained as intrapopulational polymorphisms or provide the raw material for the formation of new species.},
  author       = {Svensson, Erik and Abbott, Jessica and Gosden, Thomas and Coreau, Audrey},
  issn         = {1573-8477},
  keyword      = {Speciation,Sexual conflict,mating harassment,Male,Female resistance,Antagonistic coevolution,Female competition},
  language     = {eng},
  number       = {1},
  pages        = {93--108},
  publisher    = {Springer},
  series       = {Evolutionary Ecology},
  title        = {Female polymorphisms, sexual conflict and limits to speciation processes in animals},
  url          = {http://dx.doi.org/10.1007/s10682-007-9208-2},
  volume       = {23},
  year         = {2009},
}