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Rats eating and hoarding as a function of body weight and cost of foraging

Rats eating and hoarding as a function of body weight and cost of foraging CABANAC, MICHEL, AND and hoarding as a function ARTUR of body H. SWIERGIEL. Rats eating weight and cost of foraging. Am. J. Physiol. 257 (Regulatory Integrative Comp. Physiol. 26): R952-R957, 1989.-Rats were trained to forage 2 h daily in a zigzag alley at -15°C. On experimental days food was placed in large amounts at a l-, 4-, or 16-m distance from a warm shelter. The massof food ingested and hoarded in the shelter by the rats was then recorded. The rats body weights were depressed progressivelyby spacingthe sessions access with to food, and then the animals were allowed to recover their initial body weight. The results showedthat 2-h food intake wasconstant and did not vary asa function of body weight loss or the distanceto reach the food (cost). On the other hand, the massof food hoarded was a linear increasingfunction of body weight lossbelow the hypothetical set point for body weight and a decreasinglinear function of the distance to the food. The linear regressionof the massof food hoarded on body weight with a negative slope (b) adequately depicted the rats hoarding behavior: masshoarded = a + b (body wt). The slope of this function decreased with increasingcost of http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png AJP - Regulatory, Integrative and Comparative Physiology The American Physiological Society

Rats eating and hoarding as a function of body weight and cost of foraging

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Publisher
The American Physiological Society
Copyright
Copyright © 1989 the American Physiological Society
ISSN
0363-6119
eISSN
1522-1490
Publisher site
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Abstract

CABANAC, MICHEL, AND and hoarding as a function ARTUR of body H. SWIERGIEL. Rats eating weight and cost of foraging. Am. J. Physiol. 257 (Regulatory Integrative Comp. Physiol. 26): R952-R957, 1989.-Rats were trained to forage 2 h daily in a zigzag alley at -15°C. On experimental days food was placed in large amounts at a l-, 4-, or 16-m distance from a warm shelter. The massof food ingested and hoarded in the shelter by the rats was then recorded. The rats body weights were depressed progressivelyby spacingthe sessions access with to food, and then the animals were allowed to recover their initial body weight. The results showedthat 2-h food intake wasconstant and did not vary asa function of body weight loss or the distanceto reach the food (cost). On the other hand, the massof food hoarded was a linear increasingfunction of body weight lossbelow the hypothetical set point for body weight and a decreasinglinear function of the distance to the food. The linear regressionof the massof food hoarded on body weight with a negative slope (b) adequately depicted the rats hoarding behavior: masshoarded = a + b (body wt). The slope of this function decreased with increasingcost of

Journal

AJP - Regulatory, Integrative and Comparative Physiology – The American Physiological Society

Published: Oct 1, 1989

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