
%0 Journal Article
%A Cook, D 
%T Sexual Selection in Dung Beetles .1. A Multivariate Study of the Morphological Variation in 2 Species of Onthophagus (Scarabaeidae, Onthophagini)
%J Australian Journal of Zoology
%D 1987/04/01
%V 35
%N 2
%P 123-132
%K 
%R https://doi.org/10.1071/ZO9870123
%U https://www.publish.csiro.au/paper/ZO9870123 
%X Sexual dimorphism in horned beetles reflects a history of different selection pressures operating on males and females. A multivariate morphometric analysis was carried out on two scarabaeine dung beetles, Onthophagus binodis Thunberg and O. ferox Harold. There is clear structural polymorphism within O. binodis; horned males, females and hornless males were separated on the basis of body shape. Sexual dimorphism within O. ferox was established; sexes were separated according to the size of pronotal and cephalic horns. The effect of differential selection is discussed within the context of sexual selection. 
