Research on among individual variation in behavior has increased rapidly in recent years. It
is intuitively appealing that variation in the behavior of individuals has ecological …

Identifying phenotype-specific selective landscapes within populations continues to
challenge evolutionary biologists in studies of adaptive variation. We explore here the …

Animal populations are often comprised of both foraging specialists and generalists. For
instance, some individuals show higher foraging site fidelity (spatial specialization) than …

Questions: To what extent does intra-sex variation in size-corrected feeding structures
covary with stable isotopic values and genotype within Threespine stickleback populations …

Despite many similarities and intuitive links between individual dietary specialization and
behavioral inter‐individual variation, these phenomena have been studied in isolation, and …

Fluctuating asymmetry (FA) is often, but controversially, viewed as an indicator of fitness and
a target of selection. In the brook stickleback, Culaea inconstans (Kirtland), FA of the …

Background: The extent and importance of sexual dimorphism in non-sexually selected traits
has received considerable attention in studies of birds and reptiles but similar studies in …

Assortative mating–correlation between male and female traits–is common within
populations and has the potential to promote genetic diversity and in some cases speciation …

Ecological character displacement (ECD) provides opportunities to test how resource
competition generates diversifying selection that results in adaptive divergence. We quantify …

Stable isotope data are often used to assess diet, trophic level, trophic niche width and the
extent of omnivory. Notwithstanding ongoing discussions about the value of these …