Rodent

The Biology of Guinea Pigs: Behavior

Possibly related to, or derived from grooming and perhaps also involving an element of aggression is one animal grasping the hair of another in its teeth and pulling it out; the mouthful is often ingested. Hair pulling is a common...

Year Published: 1976Animal Type: Guinea Pig, Rodent

Citation: Harper, L. V. 1976. Behavior. In: The Biology of the Guinea Pig. Wagner, J. E. , Manning, P. J. (eds), 31-51. Academic Press, New York, NY.

Effects of age at differential housing and the duration of individual housing/grouping on intermale fighting behavior and adrenocortical activity in TO strain mice

When the mice were subjected to stress (e.g., open field exposure) corticosterone levels in single-housed subjects were consistently higher than in group-housed subjects.

Year Published: 1976Animal Type: Mouse, Rodent

Citation: Goldsmith, J. F., Brain, P. F., Benton, D. 1976. Effects of age at differential housing and the duration of individual housing/grouping on intermale fighting behavior and adrenocortical activity in TO strain mice. Aggressive Behavior 2, 307-323.

Home-cage wheel activity recording in mice

Laboratory mice run up to 16 km/24 h in running wheels.

Year Published: 1976Animal Type: Mouse, Rodent

Citation: Festing, M. F. W., Greenwood, R. 1976. Home-cage wheel activity recording in mice. Laboratory Animals 10, 81-85.

Habituation of object contact in socially-reared and isolated rats (Rattus norvegicus)

Rats reared in social isolation were found to contact fewer novel objects in an open-field than their socially reared litter mates. They also contacted a smaller variety of objects, and contacted them in different ways. Social animals showed more manipulatory...

Year Published: 1976Animal Type: Rat, Rodent

Citation: Einon, D., Morgan, M. 1976. Habituation of object contact in socially-reared and isolated rats (Rattus norvegicus). Animal Behaviour 24, 415-420.

Effects of environment on morphology of rat cerebral cortex andhippocampus

Cortical depth differences were found between male rats exposed to enriched or impoverished environmental conditions for successively shorter times.

Year Published: 1976Animal Type: Rat, Rodent

Citation: Diamond, M. C., Ingham, C. A., Johnson, R. E. et al. 1976. Effects of environment on morphology of rat cerebral cortex andhippocampus. Journal of Neurobiology 7, 75-85.

Impoverished rats weigh more than enriched rats because they eat more

Rats housed in barren environments consume more food due to boredom and are heavier than enriched rats.

Year Published: 1977Animal Type: Rat, Rodent

Citation: Fiala, B., Snow, F. M., Greenough, W. T. 1977. Impoverished rats weigh more than enriched rats because they eat more. Developmental Psychobiology 10, 537-541.

Activation of anterior pituitary, thyroid and adrenal glands in rats after disturbance stress

Cortisol levels increased within 5 minutes after the entry of an investigator - who moved the cages - and reached peak levels after 15 minutes.

Year Published: 1977Animal Type: Rat, Rodent

Citation: Dohler, K. D., Gartner, K., Muhlen, A. V. et al. 1977. Activation of anterior pituitary, thyroid and adrenal glands in rats after disturbance stress. Acta Endocrinologica 86, 489-497.

Burrows of wild and albino rats: Effects of domestication, outdoor raising, age, experience, and maternal state

Rats spend most of their time in burrows if given the choice.

Year Published: 1977Animal Type: Rat, Rodent

Citation: Boice, R. 1977. Burrows of wild and albino rats: Effects of domestication, outdoor raising, age, experience, and maternal state. Journal of Comparative and Physiological Psychology 91, 649-661.

Influence of gonadal hormones and social housing conditions on agonistic, copulatory, and related sociosexual behaviour in the Mongolian gerbil (Meriones unguiculatus)

The Mongolian gerbil is colonial, but its social organization within its colonies is not known. Pair formation has been suggested by breeders and has been observed under semi-natural conditions. Family units remain stable under such conditions. In the solitary-living hamster...

Year Published: 1977Animal Type: Gerbil, Rodent

Citation: Argen G, Meyerson BJ. 1977. Influence of gonadal hormones and social housing conditions on agonistic, copulatory, and related sociosexual behaviour in the Mongolian gerbil (Meriones unguiculatus). Behav Processes. 2;265-82.

Effects of various habituation procedures on pituitary-adrenal responsiveness in the mouse

Novelty of the environment is a powerful stimuli to activate the pituitary-adrenal axis.

Year Published: 1977Animal Type: Mouse, Rodent

Citation: Hennesy, M. B., Levine, S. 1977. Effects of various habituation procedures on pituitary-adrenal responsiveness in the mouse. Physiology and Behavior 18, 799-802.