Food deprivation after weaning often has greater effects on the reproductive success of females than of males. However, if animals are deprived prenatally (that is, through food deprivation of the mother during gestation), the reproductive success of males may be more adversely affected than that of females because of a disruption in the organizational effects of testosterone in neonatal male m...

The primary aim of this study was to examine the effects of 48-h food deprivation on rat skeletal muscle fiber type, according to myosin heavy-chain (MyHC) isoform composition and some metabolism-related factors in both slow-type dominant and fast-type dominant muscle tissues. Male Wistar rats (7 wk old) were treated with 48-h food deprivation or ad libitum feeding as control. After the treatme...

Buckley, Carolyn A., and Jill E. Schneider. Food hoarding is increased by food deprivation and decreased by leptin treatment in Syrian hamsters. Am J Physiol Regul Integr Comp Physiol 285: R1021–R1029, 2003. First published May 1, 2003; 10.1152/ajpregu.00488.2002.—Compensatory increases in food intake are commonly observed after a period of food deprivation in many species, including laboratory...

Teubner BJ, Bartness TJ. Anti-ghrelin Spiegelmer inhibits exogenous ghrelin-induced increases in food intake, hoarding, and neural activation, but not food deprivation-induced increases. Am J Physiol Regul Integr Comp Physiol 305: R323–R333, 2013. First published June 26, 2013; doi:10.1152/ajpregu.00097.2013.—Circulating concentrations of the stomach-derived “hunger-peptide” ghrelin increase in...

Behavioral responses to food deprivation are a fundamental aspect of nervous system function in all animals. In humans, these behavioral responses prevent dieting from being an effective remedy for obesity. Several signaling molecules in the mammalian brain act through G proteins of the Gαi/o family to mediate responses to food restriction. The mechanisms for neural response to food deprivation...

We examined the effect of food deprivation for three days on hypothalamic arginine vasopressin (AVP) mRNA in rats. Simultaneously the effect of water deprivation for the same period was examined as a model of dehydration. Levels of AVP mRNA in the supraoptic nucleus (SON) and the paraventricular nucleus (PVN) were determined by semiquantitative in situ hybridization histochemistry. Water depriv...

Introduction: Natural rewards are essential for survival. However, drug-seeking behaviors can be maladaptive and endanger survival. The present study was conducted to enhance our understanding of how animals respond to food and morphine as natural and drug rewards, respectively, in a conditioned place preference (CPP) paradigm. Methods: We designed a protocol to induce food CPP and compare it ...

In behavioral studies, food deprivation protocols are routinely used to initiate or maintain motivational states that are required in a particular test situation. However, there is limited evidence as to when food deprivation compromises animal welfare. This study investigated the effects of different lengths of food deprivation periods and restricted (fixed-time) feeding on body weight loss as...

Balancing the acquisition, allocation and storage of energy during periods of food deprivation is critical for survival. We show that natural variation in the foraging (for) gene, which encodes a cGMP-dependent protein kinase (PKG) in the fruit fly Drosophila melanogaster, affects behavioral and physiological responses to short-term food deprivation. Rover and sitter, natural allelic variants o...

Session Information for Program Number 450C Print Close window Abstract Content Program Nr: Mutations that Cause Food-Deprived Behavior in Well-Fed Animals. , Bob Horvitz. HHMI, Dept. Biology, MIT, Cambridge, MA. Acute food deprivation causes N2 animals to modulate their locomotion differently than well-fed animals upon entering a bacterial lawn . Acutely food-deprived animals exhibit a seroton...