A comparison of the diets of feral cats Felis catus and red foxes Vulpes vulpes on Phillip Island, Victoria.

Abstract

THE introduction of feral cats (Felis catus) and red foxes (Vulpes vulpes) to Australia in the 1800s had a profound impact on resident ecosystems. Both predators colonised successfully and now are distributed across most of mainland Australia (Saunders et al. 1995; Abbott 2002). They consume mainly ground-dwelling mammals (Coman 1973; Croft and Hone 1978; Jones and Coman 1981; Lapidge and Henshall 2002; Hutchings 2003), but where these are scarce, birds, reptiles, insects and human refuse may become important dietary components (e.g., Bubela et al. 1998; Paltridge 2002). Although they prey on similar species, when compared at the same location differences in diet between the predators are evident (Triggs et al. 1984; Catling 1988; Risbey et al. 1999).