Intralocus sexual conflict over wing length in a wild migratory bird
Tarka, Maja LU ; Åkesson, Mikael ; Hasselquist, Dennis LU and Hansson, Bengt LU
(2014)
In American Naturalist
183(1).
p.62-73
- Abstract
- Intralocus sexual conflict (ISC) occurs when males and
females have different adaptive peaks but are constrained fromevolving
sexual dimorphism because of shared genes. Implications of this
conflict on evolutionary dynamics in wild populations have not been
investigated in detail. In comprehensive analyses of selection, heritability, and genetic correlations, we found evidence for an ISC over wing length, a key trait for flight performance and migration, in a long-term study of wild great reed warblers (Acrocephalus arundinaceus). We found moderate sexual dimorphism, high heritability,
moderate sexually antagonistic selection, and strong positive crosssex
genetic correlation in wing... (More) - Intralocus sexual conflict (ISC) occurs when males and
females have different adaptive peaks but are constrained fromevolving
sexual dimorphism because of shared genes. Implications of this
conflict on evolutionary dynamics in wild populations have not been
investigated in detail. In comprehensive analyses of selection, heritability, and genetic correlations, we found evidence for an ISC over wing length, a key trait for flight performance and migration, in a long-term study of wild great reed warblers (Acrocephalus arundinaceus). We found moderate sexual dimorphism, high heritability,
moderate sexually antagonistic selection, and strong positive crosssex
genetic correlation in wing length, together supporting the presence
of ISC. A negative genetic correlation between male wing length
and female fitness indicated that females inheriting alleles for longer wings from their male relatives also inherited lower fitness.Moreover, cross-sex genetic correlations imposed constraint on the predicted microevolutionary trajectory of wing length (based on selection gradients), especially in females where the predicted response was reversed.
The degree of sexual dimorphism in wing length did not change over time, suggesting no sign of conflict resolution. Our study provides novel insight into how an ISC over a fitness trait can affect microevolution in a wild population under natural selection. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4147136
- author
- Tarka, Maja
LU
; Åkesson, Mikael
; Hasselquist, Dennis
LU
and Hansson, Bengt
LU
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- antagonistic selection, sexual dimorphism, sexual antagonism, evolutionary constraint, pedigree, quantitative genetics, Acrocephalus arundinaceus
- in
- American Naturalist
- volume
- 183
- issue
- 1
- pages
- 62 - 73
- publisher
- University of Chicago Press
- external identifiers
-
- wos:000328241100008
- pmid:24334736
- scopus:84890424338
- pmid:24334736
- ISSN
- 0003-0147
- DOI
- 10.1086/674072
- language
- English
- LU publication?
- yes
- id
- 2c2233c3-a97e-4f94-a01c-72f54e9d424a (old id 4147136)
- date added to LUP
- 2016-04-01 09:48:31
- date last changed
- 2022-01-25 08:53:20
@article{2c2233c3-a97e-4f94-a01c-72f54e9d424a,
abstract = {{Intralocus sexual conflict (ISC) occurs when males and<br/><br>
females have different adaptive peaks but are constrained fromevolving<br/><br>
sexual dimorphism because of shared genes. Implications of this<br/><br>
conflict on evolutionary dynamics in wild populations have not been<br/><br>
investigated in detail. In comprehensive analyses of selection, heritability, and genetic correlations, we found evidence for an ISC over wing length, a key trait for flight performance and migration, in a long-term study of wild great reed warblers (Acrocephalus arundinaceus). We found moderate sexual dimorphism, high heritability,<br/><br>
moderate sexually antagonistic selection, and strong positive crosssex<br/><br>
genetic correlation in wing length, together supporting the presence<br/><br>
of ISC. A negative genetic correlation between male wing length<br/><br>
and female fitness indicated that females inheriting alleles for longer wings from their male relatives also inherited lower fitness.Moreover, cross-sex genetic correlations imposed constraint on the predicted microevolutionary trajectory of wing length (based on selection gradients), especially in females where the predicted response was reversed.<br/><br>
The degree of sexual dimorphism in wing length did not change over time, suggesting no sign of conflict resolution. Our study provides novel insight into how an ISC over a fitness trait can affect microevolution in a wild population under natural selection.}},
author = {{Tarka, Maja and Åkesson, Mikael and Hasselquist, Dennis and Hansson, Bengt}},
issn = {{0003-0147}},
keywords = {{antagonistic selection; sexual dimorphism; sexual antagonism; evolutionary constraint; pedigree; quantitative genetics; Acrocephalus arundinaceus}},
language = {{eng}},
number = {{1}},
pages = {{62--73}},
publisher = {{University of Chicago Press}},
series = {{American Naturalist}},
title = {{Intralocus sexual conflict over wing length in a wild migratory bird}},
url = {{http://dx.doi.org/10.1086/674072}},
doi = {{10.1086/674072}},
volume = {{183}},
year = {{2014}},
}