. Advances in the study of mammalian behavior. Mammals. Adafjlivi'ness <jJ lii'liavwr 693. ESTIMATED PREDATOR GROUP MASS (kg) Fig. 11. Mean prey mass as a function of the estimated predator group mass. Data taken from Kruuk (1966), Kruuk, and Turner (1967), and Nudds (1978). (Fig. 10), solitary and social hunters alike kill prey whose mass is equal to, or less than, the mass of the solitary predator or the summed mass of the social predator (Fig. 11). This observation suggests that one difficulty with a large group size in social pred- ators is that the amount of food obtained by collective
. Advances in the study of mammalian behavior. Mammals. Adafjlivi'ness <jJ lii'liavwr 693. ESTIMATED PREDATOR GROUP MASS (kg) Fig. 11. Mean prey mass as a function of the estimated predator group mass. Data taken from Kruuk (1966), Kruuk, and Turner (1967), and Nudds (1978). (Fig. 10), solitary and social hunters alike kill prey whose mass is equal to, or less than, the mass of the solitary predator or the summed mass of the social predator (Fig. 11). This observation suggests that one difficulty with a large group size in social pred- ators is that the amount of food obtained by collective action may be inadequate to satisfy all of the members of the group. There appears to be an optimal group size judged from the amount of food provided by group hunting to the members of the group. Both Caraco and Wolf (1975) and Nudds (1978) showed that the amount of food provided per individual participating in a hunt attains a maximum at some "optimal" group size; it decreases in smaller groups, presumably because of their inability to kill large prey, and it decreases in larger groups, because of the limited amount of food obtained from a particular prey (Fig. 12). Thus, not only is a larger pack size required of wolves to kill elk and moose than is required to kill deer, the larger size of elk and moose can fulfill the energy requirements of many more wolves (up to 14) compared to deer. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Eisenberg, John Frederick; Kleiman, Devra G; American Society of Mammalogists. [Shippensburg, Pa?] : American Society of Mammalogists
Size: 1917px × 1304px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectmammals
