Vivaswat Shastry

1 Introduction Herbivorous insects and their host plants engage in an intimate interaction where both species exert selective pressures on each other that solicit behavioural, physiological, life-history, and molecular responses (Schoonhoven et al. 2005; Birnbaum and Abbot 2020; Groen and Whiteman 2022). Past work on plant-insect interactions has demonstrated host plants effects on individual fitness and adaptation of insects (Gloss et al. 2016; Vertacnik and Linnen 2017).

Abstract Isolation-by-distance patterns in genetic variation are a widespread feature of the geographic structure of genetic variation in many species, and many methods have been developed to illuminate such patterns in genetic data. However, long-range genetic similarities also exist, often as a result of rare or episodic long-range gene flow.

Abstract For many problems in population genetics, it is useful to characterize the distribution of fitness effects (DFE) of de novo mutations among a certain class of sites. A DFE is typically estimated by fitting an observed site frequency spectrum (SFS) to an expected SFS given a hypothesized distribution of selection coefficients and demographic history.