Fig. 4From: Influence of female cuticular hydrocarbon (CHC) profile on male courtship behavior in two hybridizing field crickets Gryllus firmus and Gryllus pennsylvanicusPrincipal component analysis of CHC for all individuals. a Relative peak proportion and b composition. Green represents G. pennsylvanicus and orange represents G. firmus. Sex is shown with male and female symbolsBack to article page