Sexual Antagonism and Sex Determination in Three Syngnathid Species Alongside a Male Pregnancy Gradient.

ABSTRACT: The allocation of energy toward gamete production, parental care, mate choice, and secondary sexual signals fosters divergence in selection between the sexes, giving rise to opposing fitness strategies and sexual antagonism. The shared genetic makeup results in single genomic loci that harbor a gene or variant with varying fitness impacts on each sex. The resolution of this intralocus sexual conflict relies on intersex bias in gene expression and/or the formation of sex-linked genomic regions, which may also play a role in regulating sex determination. Shifts in the sex determination locus may happen. While the precise mechanisms driving these shifts are unknown, sexual antagonism was long believed to be a major contributor. To investigate the link between sexual antagonism and sex determi

SUBMITTER: Dubin A 

PROVIDER: S-EPMC12229468 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature