ARNOLD, Stevan J.; Oregon State University: Multivariate stabilizing selection on morphology and performance

Theoretical discussions of morphology, performance and fitness have treated only the case of directional (linear) selection. Under a variety of circumstances it seems likely that (1) morphology has a curvilinear relationship to performance and (2) performance has a curvilinear relationship to fitness. I will discuss the estimation of curvilinear performance and fitness gradients and their implications for the study of morphology, performance and fitness.