Female-limited X-chromosome evolution effects on male pre- and post-copulatory success
Manat, Yesbol LU ; Lund-Hansen, Katrine K. LU
; Katsianis, Georgios
and Abbott, Jessica K.
LU
(2021)
In Biology letters
17(3).
- Abstract
Intralocus sexual conflict arises when the expression of shared alleles at a single locus generates opposite fitness effects in each sex (i.e. sexually antagonistic alleles), preventing each sex from reaching its sex-specific optimum. Despite its importance to reproductive success, the relative contribution of intralocus sexual conflict to male pre- and post-copulatory success is not well-understood. Here, we used a female-limited X-chromosome (FLX) evolution experiment in Drosophila melanogaster to limit the inheritance of the X-chromosome to the matriline, eliminating possible counter-selection in males and allowing the X-chromosome to accumulate female-benefit alleles. After more than 100 generations of FLX evolution, we studied the... (More)
Intralocus sexual conflict arises when the expression of shared alleles at a single locus generates opposite fitness effects in each sex (i.e. sexually antagonistic alleles), preventing each sex from reaching its sex-specific optimum. Despite its importance to reproductive success, the relative contribution of intralocus sexual conflict to male pre- and post-copulatory success is not well-understood. Here, we used a female-limited X-chromosome (FLX) evolution experiment in Drosophila melanogaster to limit the inheritance of the X-chromosome to the matriline, eliminating possible counter-selection in males and allowing the X-chromosome to accumulate female-benefit alleles. After more than 100 generations of FLX evolution, we studied the effect of the evolved X-chromosome on male attractiveness and sperm competitiveness. We found a non-significant increase in attractiveness and decrease in sperm offence ability in males expressing the evolved X-chromosomes, but a significant increase in their ability to avoid displacement by other males' sperm. This is consistent with a trade-off between these traits, perhaps mediated by differences in body size, causing a small net reduction in overall male fitness in the FLX lines. These results indicate that the X-chromosome in D. melanogaster is subject to selection via intralocus sexual conflict in males.
(Less)
- author
- Manat, Yesbol
LU
; Lund-Hansen, Katrine K.
LU
; Katsianis, Georgios
and Abbott, Jessica K.
LU
- organization
- publishing date
- 2021
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- intralocus sexual conflict, male attractiveness, male fitness, sperm competition, X-chromosome
- in
- Biology letters
- volume
- 17
- issue
- 3
- article number
- 20200915
- publisher
- Royal Society Publishing
- external identifiers
-
- pmid:33653095
- scopus:85102327712
- ISSN
- 1744-9561
- DOI
- 10.1098/rsbl.2020.0915
- language
- English
- LU publication?
- yes
- id
- 97f69628-12af-451e-ba5f-19a86b9cca0d
- date added to LUP
- 2021-03-24 13:55:41
- date last changed
- 2025-01-13 05:34:09
@article{97f69628-12af-451e-ba5f-19a86b9cca0d,
abstract = {{<p>Intralocus sexual conflict arises when the expression of shared alleles at a single locus generates opposite fitness effects in each sex (i.e. sexually antagonistic alleles), preventing each sex from reaching its sex-specific optimum. Despite its importance to reproductive success, the relative contribution of intralocus sexual conflict to male pre- and post-copulatory success is not well-understood. Here, we used a female-limited X-chromosome (FLX) evolution experiment in Drosophila melanogaster to limit the inheritance of the X-chromosome to the matriline, eliminating possible counter-selection in males and allowing the X-chromosome to accumulate female-benefit alleles. After more than 100 generations of FLX evolution, we studied the effect of the evolved X-chromosome on male attractiveness and sperm competitiveness. We found a non-significant increase in attractiveness and decrease in sperm offence ability in males expressing the evolved X-chromosomes, but a significant increase in their ability to avoid displacement by other males' sperm. This is consistent with a trade-off between these traits, perhaps mediated by differences in body size, causing a small net reduction in overall male fitness in the FLX lines. These results indicate that the X-chromosome in D. melanogaster is subject to selection via intralocus sexual conflict in males.</p>}},
author = {{Manat, Yesbol and Lund-Hansen, Katrine K. and Katsianis, Georgios and Abbott, Jessica K.}},
issn = {{1744-9561}},
keywords = {{intralocus sexual conflict; male attractiveness; male fitness; sperm competition; X-chromosome}},
language = {{eng}},
number = {{3}},
publisher = {{Royal Society Publishing}},
series = {{Biology letters}},
title = {{Female-limited X-chromosome evolution effects on male pre- and post-copulatory success}},
url = {{http://dx.doi.org/10.1098/rsbl.2020.0915}},
doi = {{10.1098/rsbl.2020.0915}},
volume = {{17}},
year = {{2021}},
}