Abstract
The adjustment of Calomys callosus (Rodentia, Cricetidae) to intermittent food deprivation was investigated. Animals subjected either to 24-hr or to 48-hr repeated periods of deprivation successfully compensated, showing (1) increases in post-fast intake relatively to the intake by control animals; (2) rapid recovery of the baseline levels of body wieght. The regulatory ability of C. callosus is comparable, in such respects, to the ability of the common rat and some other rodents but it is remarkably different from the hamster's.
The adjustment of Calomys callosus (Rodentia, Cricetidae) to food deprivation
César Ades; Renate Edla Kolde
Departamento de Psicologia Experimental, Instituto de Psicologia, USP. Av. Prof. Mello Moraes, 1721, 05508 São Paulo, Brasil
ABSTRACT
The adjustment of Calomys callosus (Rodentia, Cricetidae) to intermittent food deprivation was investigated. Animals subjected either to 24-hr or to 48-hr repeated periods of deprivation successfully compensated, showing (1) increases in post-fast intake relatively to the intake by control animals; (2) rapid recovery of the baseline levels of body wieght. The regulatory ability of C. callosus is comparable, in such respects, to the ability of the common rat and some other rodents but it is remarkably different from the hamster's.
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ACKNOWLEDGEMENTS
This research was supported by FINEP grant (43.86.0779.00) and by CNPq fellowship (30.5618/78) given to the first author. We are grateful to Marta Szartman for the identification of the animals.
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Publication Dates
-
Publication in this collection
11 Aug 2009 -
Date of issue
1989
