Behavior of juvenile lizards (Iguana iguana) in a conflict between temperature regulation and palatable food

Juvenile green iguanas were placed in a situation of conflict between two motivations: a thermoregulatory drive and the attraction of a palatable bait. To be able to reach the bait (lettuce), they had to leave a warm refuge, provided with standard food, and venture into a cold environment. In experi...

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Bibliographic Details
Published in:Brain, behavior and evolution Vol. 52; no. 6; p. 257
Main Authors: Balasko, M, Cabanac, M
Format: Journal Article
Language:English
Published: Switzerland S. Karger AG 1998
Subjects:
Ambient temperature
Animals
Baits
Behavior, Animal - physiology
Body Temperature Regulation - physiology
Choice Behavior
Cognition - physiology
Feeding Behavior - psychology
Food
Food Preferences
Iguanas - physiology
Lizards
Time Factors
ISSN:0006-8977, 1421-9743
Online Access:Get full text
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Summary:Juvenile green iguanas were placed in a situation of conflict between two motivations: a thermoregulatory drive and the attraction of a palatable bait. To be able to reach the bait (lettuce), they had to leave a warm refuge, provided with standard food, and venture into a cold environment. In experiment 1 the time interval between sessions with bait, ranging from 1 to 8 days, had no effect on the duration of stay on the bait. This result shows that the lettuce was not a necessary food, deprivation of which would have had to be compensated for. In experiment 2 as the ambient temperature at the bait decreased the lizards spent less time feeding on lettuce, and they visited the bait less frequently. This result shows that the lizards traded off the palatability of the bait with the disadvantage of the cold. These findings support the hypothesis that a common currency makes it possible for lizards to compare two sensory modalities.
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ISSN:0006-8977
1421-9743
DOI:10.1159/000006570