Rodent

The effects of short-term isolation on systolic blood pressure and heart rate in rats

Rats in metabolic cages develop hypertension within five days.

Year Published: 1977Animal Type: Rat, Rodent

Citation: Gardiner, S. M., Bennett, T. 1977. The effects of short-term isolation on systolic blood pressure and heart rate in rats. Medical Biology 55, 325-329.

Effects of the duration of individual or group housing on behavioral and adrenocortical reactivity in male mice

Basal corticosterone levels did not show a significant difference between single-housed and group-housed animals. 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, indicating an increased...

Year Published: 1978Animal Type: Mouse, Rodent

Citation: Goldsmith, J. F., Brain, P. F., Benton, D. 1978. Effects of the duration of individual or group housing on behavioral and adrenocortical reactivity in male mice. Physiological Psychology 21, 757-760.

Factors affecting the development of isolation-induced hypertension in rats

Housing rats in groups seems to be less stressful for the animals than housing them alone.

Year Published: 1978Animal Type: Rat, Rodent

Citation: Gardiner, S. M., Bennet, T. 1978. Factors affecting the development of isolation-induced hypertension in rats. Medical Biology 56, 277-281.

Drug-modulated behavioural responses to environmental enrichment

The home-cage activity of mice housed in either social or enriched sensory environments was continuously recorded for 23 days. During this period the mice were given daily injections of either strychnine, chlorpromazine, or saline. Both chlorpromazine and social rearing depressed...

Year Published: 1978Topics: Environmental EnrichmentAnimal Type: Mouse, Rodent

Citation: Cummins, R. A., Carlyon, T. N., Walsh, R. N. 1978. Drug-modulated behavioural responses to environmental enrichment. Psychopharmacology 58(2), 197-199.

Behavior adaptation to fixed-interval and fixed-time food delivery in golden hamster

Food-deprived golden hamsters in a large enclosure received food every 30 sec contingent on lever pressing, or free while their behavior was continuously recorded in terms of an exhaustive classification of motor patterns. As with other species in other situations,...

Year Published: 1977Animal Type: Hamster, Rodent

Citation: Anderson, M. C., Shettleworth, S. T. 1977. Behavior adaptation to fixed-interval and fixed-time food delivery in golden hamster. Journal of the Experimental Analysis of Behavior 25, 33-49.

The behaviour of Mongolian gerbils in a semi-natural environment with special reference to ventral marking, dominance and sociability

Gerbils do not show stereotyped bar-gnawing in cages which are provided with a lid [dark areas in cage].

Year Published: 1977Animal Type: Gerbil, Rodent

Citation: Roper, T. J., Polioudakis, E. 1977. The behaviour of Mongolian gerbils in a semi-natural environment with special reference to ventral marking, dominance and sociability. Behaviour 61, 207-237.

Genetics, Environment and Intelligence

Social grouping versus isolation aids subsequent learning and retention. ... Enriched-experienced rats perform better than colony - or impoverished-experience rats.

Year Published: 1977Animal Type: Rat, Rodent

Citation: Oliverio, A. 1977. Genetics, Environment and Intelligence. Elsevier, Amsterdam, Netherlands.

Behavioral persistence following switchovers between environmental enrichment and impoverishment in mice

Early life experiences in a particular level of environmental complexity need not permanently modify behavior.

Year Published: 1978Animal Type: Mouse, Rodent

Citation: Klippel, J. A. 1978. Behavioral persistence following switchovers between environmental enrichment and impoverishment in mice. Developmental Psychobiology 11, 541-557.

Influence of visible light on organ weights of mice

Light affected the weights of the pituitary, adrenals, kidneys and prostate in male mice and the adrenals, thyroid and pineal glands in females. The weight of adrenal glands of both males and females were most sensitive to changes in lighting.

Year Published: 1979Animal Type: Mouse, Rodent

Citation: Saltarelli, C. G., Coppola, C. P. 1979. Influence of visible light on organ weights of mice. Laboratory Animal Science 29, 319-322.

Effects of prior housing on endocrine responses to differential caging in male TO-strain mice

The results support the suggestion that changing the housing condition of mice [e.g., from single-housing to pair-housing and vice versa] is stressful as measured in elevated corticosterone levels.... The influence of re-housing was sufficient to produce higher basal corticosteroide titers...

Year Published: 1979Animal Type: Mouse, Rodent

Citation: Benton, D., Brain, P. F., Goldsmith, J. F. 1979. Effects of prior housing on endocrine responses to differential caging in male TO-strain mice. Physiological Psychology 7, 89-92.