RT Journal Article
SR Electronic
T1 Sexual antagonism in sequential hermaphrodites
JF bioRxiv
FD Cold Spring Harbor Laboratory
SP 2023.03.01.530720
DO 10.1101/2023.03.01.530720
A1 Thomas J. Hitchcock
A1 Andy Gardner
YR 2023
UL http://biorxiv.org/content/early/2023/03/02/2023.03.01.530720.abstract
AB Females and males may have distinct phenotypic optima, but share essentially the same complement of genes, potentially leading to trade-offs between attaining high fitness through female versus male reproductive success. Such sexual antagonism may be particularly acute in hermaphrodites, whereby both reproductive strategies are housed within a single individual. Whilst previous models have focused on simultaneous hermaphroditism, we lack theory for how sexual antagonism may play out under sequential hermaphroditism, which have the additional complexities of age-structure. Here we develop a formal theory of sexual antagonism in sequential hermaphrodites. First, we develop a general theoretical overview of the problem, then consider different types of sexually antagonistic and life-history trade-offs, under different modes of genetic inheritance (autosomal or cytoplasmic), and different forms of sequential hermaphroditism (protogynous, protoandrous or bi-directional). Finally, we provide a concrete illustration of these general patterns by developing a two-stage two-sex model, which yields conditions for both invasion of sexually antagonistic alleles and maintenance of sexually antagonistic polymorphisms.Competing Interest StatementThe authors have declared no competing interest.