BODY-SIZE OF CHILEAN FOXES - A NEW PATTERN IN LIGHT OF NEW DATA

By using body measurements and weight data of culpeo fox Dusicyon culp aeus Molina, 1782 and chilla fox D. griseus Gray, 1837 from the Chinch illa National Reserve (north-central Chile) and Torres del Paine Natio nal Park (southern Chile), the body size distribution of Chilean foxes was analyzed and compared to data previously published by Fuentes and Jaksic (1979). Contrary to those authors, our data show that not only the larger but both species increase in size in southern Chile. Thus, latitudinal size distribution of D. culpaeus and D. griseus may not b e the result of character displacement through exploitation competitio n, as previously interpreted, but of bioenergetic adaptations.