Rat

Deficits in exploratory behaviour in socially isolated rats are not accompanied by changes in cerebral cortical adrenocepter binding

Single-housing produced marked deficits in exploratory behavior.

Year Published: 1988Animal Type: Rat, Rodent

Citation: Standford, S. C., Parker, V., Morinan, A. 1988. Deficits in exploratory behaviour in socially isolated rats are not accompanied by changes in cerebral cortical adrenocepter binding. Journal of Affective Disorder 15, 175-180.

Plasma corticosterone levels during repeated presentation of two intensities of restraint stress: Chronic stress and habituation

Corticosterone levels of control rats increased when the animals witnessed stress reactions of conspecifics during forced restraint.

Year Published: 1988Animal Type: Rat, Rodent

Citation: Pitman, D. L., Ottenweller, J. E., Natelson, B. H. 1988. Plasma corticosterone levels during repeated presentation of two intensities of restraint stress: Chronic stress and habituation. Physiology and Behavior 43, 47-55.

The effects of gentling on open-field behaviour of rats

Non-gentled rats showed higher frequencies and durations of passive motionlessness and higher proportions of loose stools and rigid movements during frighting situations than rats who had been gentled for three weeks.

Year Published: 1988Topics: HandlingAnimal Type: Rat, Rodent

Citation: Hirsjarvi, P. A. , Junnila, M. A. 1988. The effects of gentling on open-field behaviour of rats. In: New Developments in Biosciences: Their Implications for Laboratory Animal Science. Beynen, A. C. , Solleveld, H. A. (eds), 399-403. Marinus Nijhoff, Dordrecht, The Netherlands.

Transportation of rats affects behavior on non-transported rats in the absence of physical contact

Exposure [visual, auditory and olfactory] to stressed conspecifics was accompanied by an increase in cortisol levels.

Year Published: 1989Animal Type: Rat, Rodent

Citation: De Laat, J. M. T., Van Tintelen, G., Beynen, A. C. 1989. Transportation of rats affects behavior on non-transported rats in the absence of physical contact. Zeitschrift f?r Versuchstierkunde 32, 235-237.

Plantar decubitus ulcers in rats and rabbits

Year Published: 1989Animal Type: Rabbit, Rat, Rodent

Citation: Honma, M., Kast, A. 1989. Plantar decubitus ulcers in rats and rabbits. Jikken Dobutsu 38, 253-248.

Individual housing does not influence the adaptation of the pituitary-adrenal axis and other physiological variables to chronic stress in adult male rats

Individually housed rats displayed a higher corticosterone stress response to 30-minute immobilization than group-housed rats.

Year Published: 1989Animal Type: Rat, Rodent

Citation: Giralt, M., Armario, A. 1989. Individual housing does not influence the adaptation of the pituitary-adrenal axis and other physiological variables to chronic stress in adult male rats. Physiology and Behavior 45, 477-481.

Restricted daily exposure to environmental enrichment increases the diversity of exploration

Two hours of daily exposure to environmental enrichment produced similar object exploration effects than 24 hours of daily exposure.

Year Published: 1989Topics: Environmental EnrichmentAnimal Type: Rat, Rodent

Citation: Widman, D. R., Rosellini, R. A. 1989. Restricted daily exposure to environmental enrichment increases the diversity of exploration. Physiology and Behavior 47, 57-62.

Measurements of core temperature in spontaneously hypertensive rats by radiotelemetry

Handling and restraint can cause significant increases in core temperature. When SH [spontaneously hypertensive] rats are not stressed or disturbed, their core temperatures are not significantly different from that of normotensive WKY [Wistar-Kyoto] rats.

Year Published: 1990Topics: Biological Sampling & Physiological MeasurementAnimal Type: Rat, Rodent

Citation: Berkey, D. L., Meeuwsen, K. W., Barney, C. C. 1990. Measurements of core temperature in spontaneously hypertensive rats by radiotelemetry. American Journal of Physiology 258, R743-749.

Activity patterns of rats (Rattus norvegicus) as a function of the cost of access to four resources

Wheel running seems to be a rewarding experience and subjects are bar pressing to obtain access to a wheel.

Year Published: 1990Animal Type: Rat, Rodent

Citation: Collier, G. H., Johnson, D. E., Cybulski, KA. et al. 1990. Activity patterns of rats (Rattus norvegicus) as a function of the cost of access to four resources. Journal of Comparative Psychology 104, 53-65.

Stress hyperthermia: Physiological arguments that it is fever

Manual restraint increases body temperature in rats.

Year Published: 1991Animal Type: Rat, Rodent

Citation: Briese, E., Cabanac, M. 1991. Stress hyperthermia: Physiological arguments that it is fever. Physiology and Behavior 49, 1153-1157.