Graham, M., & Letz, R. (1979). Within-species variation in the development of ultrasonic signaling of preweanling rats. Dev Psychobiol, 12(2), 129–136.
Abstract: The development of litter and individual differences in the rate of ultrasonic signaling of neonatal rats was studied. Systematic variations among litters and individuals emerged, without differential treatment. These differences were not correlated with variations in general development as indexed by body weight. Two experiments using a cross-fostering design showed that litter differences developed independently of variations in postnatal environment. These results indicate that the variations among litters in ultrasound rate have a prenatal, possibly genetic, etiology and may represent reliable indicants of response to environmental stress.
|
|
Potter Rl, H. R. (1979). Feral burro food habits and habitat relations, Grand Canyon National Park, Arizona. Symposium on the Ecology and Behavior of wild and feral Equids, Laramie, , 143–157.
|
|
Mori, U. (1979). Ecological and sociological studies of gelada baboons. Unit formation and the emergence of a new leader. Contrib Primatol, 16, 155–181.
|
Rappolt, G. A., John, J., & Thompson, N. S. (1979). Canine responses to familiar and unfamiliar humans. Aggressive Behavior, 5(2), 155–161.
Abstract: Dogs were observed during controlled approaches by their owners and by strangers. Significant differences between the dogs' responses to their owners and their responses to strangers were found. These results supported the popular belief that dogs respond differently to different persons, and not merely to different situations in which persons are usually encountered.
|
|
Gakahu Cg,. (1979). Strategies of feeding behavior in the Common zebra, Equus burchelli (Gray) in Amboseli National Park, Kenya (Abstract). Symposium on the Ecology and Behavior of wild and feral Equids, Laramie, , 158.
|
|
Mungall Ec,. (1979). Habitat preferences of Africa's recent equidae, with special reference to the extinct quagga. Symposium on the Ecology and Behavior of wild and feral Equids, Laramie, , 159–172.
|
|
Wolfe Ml,. (1979). Feral horse demography: A preliminary report (Abstract).
|
|
Keiper Rr,. (1979). Population dynamics of feral ponies. Laramie: Symposium on the Ecology and Behavior of wild and feral Equids.
|
|
Boyd L,. (1979). The mare-foal demography of feral horses in Wyoming's Red Desert. Symp Ecolo and Behav of wild and feral Equids, Laramie, , 185–204.
|
|
Boy V, D. P. (1979). Time-budgets of Camargue horses, I. Development changes in the time-budgets of foals. Behaviour, 71, 187–202.
|
