ABS 2022
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Influence of parental genotype and reproductive environment on offspring reproductive behavior
Robert A. S. Laroche1, Kelly L. Weinersmith1, Lisa Angeloni2, Jeffrey Baylis3, Scott P. Egan1, Daniel D. Wiegmann4. 1Rice University, Houston, TX, United States; 2Colorado State University, Fort Collins, CO, United States; 3University of Wisconsin Madison, Madison, WI, United States; 4Bowling Green State University, Bowling Green, OH, United States

How traits are inherited informs how selection may act on these traits. In addition to genetic inheritance, ecological inheritance–the passing of environmental conditions to offspring–shapes offspring traits. Labile traits such as behaviors, life history traits or physiological responses are strongly influenced by the environment and thus may be particularly subject to ecological inheritance. In smallmouth bass, there is evidence that–through ecological inheritance–reproductive timing of parents can even result in an inverse relationship between parental and offspring reproductive phenotype. Using genomic data from a 10 year study on smallmouth bass, we construct a pedigree for a closed-lake population. We employ a mixed-effect model to estimate the portion of variation in reproductive phenotype–size, age and within-season timing of reproduction–explained by additive genetic variance versus parental-environmental effect. Thus, we test the hypothesis that reproductive phenotype is influenced both by genetic inheritance and ecological-inheritance, and that these two mechanisms relating traits of parents and offspring can differ in the direction of their impact on offspring phenotype.