Maternal-by-environment but not genotype-by-environment interactions in a fish without parental care.

ABSTRACT: The impact of environmental conditions on the expression of genetic variance and on maternal effects variance remains an important question in evolutionary quantitative genetics. We investigate here the effects of early environment on variation in seven adult life history, morphological, and secondary sexual traits (including sperm characteristics) in a viviparous poeciliid fish, the mosquitofish Gambusia holbrooki. Specifically, we manipulated food availability during early development and then assessed additive genetic and maternal effects contributions to the overall phenotypic variance in adults. We found higher heritability for female than male traits, but maternal effects variance for traits in both sexes. An interaction between maternal effects variance and rearing environment affec

SUBMITTER: Vega-Trejo R 

PROVIDER: S-EPMC5837127 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature