Female choice response to artificial selection on an exaggerated male trait in a stalk-eyed fly

@article{Wilkinson1994FemaleCR,
  title={Female choice response to artificial selection on an exaggerated male trait in a stalk-eyed fly},
  author={Gerald S. Wilkinson and Paul R. Reillo},
  journal={Proceedings of the Royal Society of London. Series B: Biological Sciences},
  year={1994},
  volume={255},
  pages={1 - 6}
}
  • G. Wilkinson, P. R. Reillo
  • Published 22 January 1994
  • Biology
  • Proceedings of the Royal Society of London. Series B: Biological Sciences
Quantitative genetic models for the evolution of exaggerated male traits through female mate choice predict that selection on male ornaments should cause a correlated response in female preferences. Furthermore, female selectivity should be inversely related to costs of mate choice. Here we use a stalkeyed fly Cyrtodiopsis dalmanni (Diptera:Diopsidae), which exhibits pronounced sexual dimorphism in eye span, to evaluate these predictions. Field observations reveal that each evening females… 

Figures from this paper

Sex-linked Correlated Responses in Female Reproductive Traits to Selection on Male Eye Span in Stalk-eyed Flies1

TLDR
The absence of any change in sperm length or testis size between lines indicates that changes in female traits are unlikely due to correlated selection mediated by sperm competition, and the presence of nonadditive allelic effects on genetically correlated female traits combined with additive alleliceffects on a male ornament provides a previously unrecognized mechanism by which genetic variation could be maintained despite strong sexual selection.

Male eye span in stalk-eyed flies indicates genetic quality by meiotic drive suppression

TLDR
It is shown that females prefer ornaments that indicate genetic quality generated by transmission conflict between the sex chromosomes, and male eye span signals genetic quality by influencing the reproductive value of offspring.

Evolution of female mating preferences in stalk-eyed flies

TLDR
It is concluded that female sensory bias for males with long eye span did not exist in a common ancestor to these species, and female preference and remating propensity either coevolved with eye span dimorphism or evolved after male eye stalks elongated.

Male mate preference for female eyespan and fecundity in the stalk-eyed fly, Teleopsis dalmanni

TLDR
Results show that male mate preferences are a prevalent feature of a canonical example of female mate choice sexual selection and that males use multiple cues when they assess females as potential mates.

Direct and correlated responses to artificial selection on male mating frequency in the stalk‐eyed fly Cyrtodiopsis dalmanni

TLDR
The results suggest that costs associated with the production and maintenance of large accessory glands, although yet to be identified, are likely to be a major constraint on mating frequency in natural populations of C. dalmanni.

Female mate choice and male ornamentation in the stalk-eyed fly, diasemopsis meigenii

TLDR
It is shown that choosiness and selection, but not the preference function, are elevated in mated females, and evidence is found for the heightened condition dependence of the male sexual trait (male eyespan), and for a novel gene-by-environment interaction.

Effects of multiple mating and male eye span on female reproductive output in the stalk-eyed fly, Cyrtodiopsis dalmanni

TLDR
Examination of the effects of multiple mating and male eye span on short-term reproductive output in the stalk-eyed fly suggested that obtaining a sufficient sperm supply is an important benefit associated with multiple mating.

Condition-dependent signalling of genetic variation in stalk-eyed flies

TLDR
It is shown that genetic variation underlies the response to environmental stress of a sexual ornament (male eye span) in the stalk-eyed fly Cyrtodiopsis dalmanni, and this results strongly support the hypothesis that female mate choice yields genetic benefits for offspring.

Male sexual ornament size is positively associated with reproductive morphology and enhanced fertility in the stalk-eyed fly Teleopsis dalmanni

TLDR
Male eyespan in stalk-eyed flies is subject to strong directional mate preference and is a reliable indicator of male reproductive quality – both because males with larger eyespan have bigger accessory glands and testes, and also as they confer higher fertility on females.

No detectable genetic correlation between male and female mating frequency in the stalk-eyed fly Cyrtodiopsis dalmanni

TLDR
This study suggests that the genes which influence remating may not be the same in the sexes, and that females remate frequently in this species to gain as yet unidentified benefits.
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