Projects per year
Abstract
Females and males may face different selection pressures, such that
alleles conferring a benefit in one sex may be deleterious in the other.
Such sexual antagonism has received a great deal of theoretical and
empirical attention, almost all of which has focused on diploids.
However, a sizeable minority of animals display an alternative
haplodiploid mode of inheritance, encompassing both arrhenotoky, whereby
males develop from unfertilized eggs, and paternal genome elimination
(PGE), whereby males receive but do not transmit a paternal genome.
Alongside unusual genetics, haplodiploids often exhibit social ecologies
that modulate the relative value of females and males. Here, we develop
a series of evolutionary-genetic models of sexual antagonism for
haplodiploids, incorporating details of their molecular biology and
social ecology. We find that: (1) PGE promotes female-beneficial alleles
more than arrhenotoky, and to an extent determined by the timing of
elimination—and degree of silencing of—the paternal genome; (2)
sib-mating relatively promotes female-beneficial alleles, as do other
forms of inbreeding including limited male-dispersal, oedipal-mating,
and the pseudo-hermaphroditism of Icerya purchasi; (3) resource
competition between related females inhibits the invasion of
female-beneficial alleles; and (4) sexual antagonism foments conflicts
between parents and offspring, endosymbionts and hosts, and maternal-
and paternal-origin genes.
Original language | English |
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Pages (from-to) | 292-309 |
Number of pages | 18 |
Journal | Evolution |
Volume | 76 |
Issue number | 2 |
Early online date | 21 Dec 2021 |
DOIs | |
Publication status | Published - 1 Feb 2022 |
Keywords
- Arrhenotoky
- Haplodiploidy
- Inbreeding
- Intralocus sexual conflict
- Paternal genome elimination
- Sexually antagonistic alleles
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Dive into the research topics of 'Sexual antagonism in haplodiploids'. Together they form a unique fingerprint.Projects
- 2 Finished
-
SOCIOCOMPLEXITY - New Paradigms: H2020 ERC Consolidator Grant 2017
Gardner, A. (PI)
1/05/18 → 31/10/24
Project: Standard
-
NERC Fellowship: Understanding major transitions in individuality
Gardner, A. (PI)
31/03/14 → 30/04/22
Project: Standard