Rodent

Chronic noise stress and insulin secretion in male rats

The effect of chronic noise, followed by acute noise and forced swimming, on basal glucose and insulin levels was studied in adult male rats. Chronic noise did not modify basal levels of either measured variable before or after the exposure...

Year Published: 1985Animal Type: Rat, Rodent

Citation: Armario, A., Castellanos, J. M., Balsch, J. 1985. Chronic noise stress and insulin secretion in male rats. Physiology and Behavior 34, 359-361.

Effects of aging and housing in an enriched environment on sleep-wake patterns in rats

Rats housed in enriched versus barren cages show brain changes indicative of enhanced cerebral activity, and they spend more time sleeping.

Year Published: 1986Animal Type: Rat, Rodent

Citation: Van Gool, W. A., Mirmiran, M. 1986. Effects of aging and housing in an enriched environment on sleep-wake patterns in rats. Sleep 9, 335-347.

Facts, fiction and rational decisions

Rats showed a significant increase in plasma glucocorticosteroids after being moved by lift from one room to another, even though they remained in their home cages.

Year Published: 1986Animal Type: Rat, Rodent

Citation: Ursin, H., Murison, R. 1986. Facts, fiction and rational decisions. Acta Physiologica Scandinavica 554(Supplement 1), 234-242.

Social interactions among rats housed in grouped and enriched conditions

No evidence was found in support of the hypothesis that play is responsible for the effects of environmental enrichment.

Year Published: 1986Animal Type: Rat, Rodent

Citation: Renner, M. J., Rosenzweig, M. R. 1986. Social interactions among rats housed in grouped and enriched conditions. Developmental Psychobiology 19, 303-313.

Effect of stress on pharmocokinetics of amikacin and ticarcillin

Aberrant serum ticarcillin concentrations were measured when the animals were simply picked out, put on a laboratory bench, and wrapped in a towel to restrain them for blood collection. No aberration occurred in quasi trained rats who were handled daily...

Year Published: 1987Animal Type: Rat, Rodent

Citation: Shyu, W. C., Nightingale, C. H., Tsuji, A. et al. 1987. Effect of stress on pharmocokinetics of amikacin and ticarcillin. Journal of Pharmaceutical Sciences 76, 265-266.

The functions of urine marking in a free-living population of house mice, Mus domesticus rutty

The urine-marking behaviour of free-living house mice,Mus domesticusRutty, was investigated in a poultry house where mice defended small territories and where evidence of previous marking behaviour was extensive. Thin smears of urine were found spread over most surfaces and concentrated...

Year Published: 1987Animal Type: Mouse, Rodent

Citation: Hurst, J. L. 1987. The functions of urine marking in a free-living population of house mice, Mus domesticus rutty. Animal Behaviour 35, 1433-1442.

Non-edible material elicits chewing and reduces the plasma corticosterone response during novelty exposure in mice

If mice were placed in a novel environment with metal foil or cardboard available, they chewed these materials. These animals had lower plasma corticosterone levels in novel cages than mice in the same environment without access to these chewable items....

Year Published: 1987Animal Type: Mouse, Rodent

Citation: Hennesy, M. B., Foy, T. 1987. Non-edible material elicits chewing and reduces the plasma corticosterone response during novelty exposure in mice. Behavioral Neuroscience 101, 237-245.

Response of rats to the presence of stressed conspecifics as a function of day time

Corticosterone levels of non-handled rats increase when the animals witness stress reactions of conspecifics during forced restraint.

Year Published: 1987Animal Type: Rat, Rodent

Citation: Fuchs, E., Fluegge, G., Hutzelmeyer, H. D. 1987. Response of rats to the presence of stressed conspecifics as a function of day time. Hormones and Behavior 21, 245-252.

Intermittent stimulation and acceleration of puberty by urinary chemosignalsin female mice (Mus musculus domesticus)

A bedding of ground wood shavings was changed once each week. Pregnant females and female test mice were provided with cotton squares (Nestlets, Ancare Corp., Manhasset,NY; 4.8 X 4.8 X 0.6-cm thick) for making nests.

Year Published: 1987Animal Type: Mouse, Rodent

Citation: Drickamer, L. C. 1987. Intermittent stimulation and acceleration of puberty by urinary chemosignalsin female mice (Mus musculus domesticus). Biology of Reproduction 37, 89-95.

Transfer of effects from environmentally enriched and impoverishedfemale rats to future offspring

Experiments are described which demonstrate that manipulation of the environments of female rats even prior to pregnancy can significantly modify the behaviour of future offspring.

Year Published: 1987Animal Type: Rat, Rodent

Citation: Dell, P. A., Rose, F. D. 1987. Transfer of effects from environmentally enriched and impoverishedfemale rats to future offspring. Physiology and Behavior 39, 187-190.