. Advances in the study of mammalian behavior. Mammals. Case Studies 437 PUPSITTING lOOi 4-l3th WEEK N=ll 90 80 70 uj 60 a H SO < - 30 20 10. A MALE O FEMALE D HELPER LEFT ALONE NUMBER OF ADULTS Fig. 6. Mean pupsitting time by silverbacked jackal families with varying num- ber of helpers during weeks 4 to 13 (n = 11; 622 h of observations). From weeks 4 to 13 both parents averaged about 40% of the time at the den and 60% foraging (Fig. 5). By contrast, when a helper was present, the pups were left alone on average only 15% of the time (Fig. 6). Mothers spent slightly less time at the den an
. Advances in the study of mammalian behavior. Mammals. Case Studies 437 PUPSITTING lOOi 4-l3th WEEK N=ll 90 80 70 uj 60 a H SO < - 30 20 10. A MALE O FEMALE D HELPER LEFT ALONE NUMBER OF ADULTS Fig. 6. Mean pupsitting time by silverbacked jackal families with varying num- ber of helpers during weeks 4 to 13 (n = 11; 622 h of observations). From weeks 4 to 13 both parents averaged about 40% of the time at the den and 60% foraging (Fig. 5). By contrast, when a helper was present, the pups were left alone on average only 15% of the time (Fig. 6). Mothers spent slightly less time at the den and fathers slightly more, but helpers averaged 60% time at the den, ensuring that the pups were seldom left alone. With two helpers the pattern was more complicated. The mother spent more time at the den and presumably less time foraging. But, because the mother was fed by the mate and helpers during this period, her need to forage for the pups and for herself may have been reduced. The father spent less time at the den and presumably more time foraging. In 12-h tracking of parents, the majority of resting behavior was at the den, while most time away from the den was spent foraging. On average the two helpers continued to spend in total about 55% of the time at the den, and pups were left. 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: 1625px × 1538px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectmammals
