Exposure to male-dominated environments during development influences sperm sex ratios at sexual maturity.

ABSTRACT: Different stages during development are important when it comes to phenotypic adjustments in response to external stimuli. Critical stages in mammals are the prenatal phase, where embryos are exposed to a milieu of sex steroid hormones, and the early-postnatal phase, where littermates interact and experience their incipient social environment. Further, the postmaternal environment will influence the development of traits that are linked to reproductive success in adulthood. Accumulated evidence of male-driven sex allocation establishes the currently untested hypothesis that the sperm sex ratio is a plastic trait that can be mediated to align with prevailing social conditions. Here, we used natural variation in the maternal environment and experimentally manipulated the postmaternal environ

SUBMITTER: Lavoie MD 

PROVIDER: S-EPMC6675145 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature