the objective of this study was to evaluate the impact of short-term starvation and re-feeding on oxidative stress in mesopotamichthys sharpeyi (günther, 1874). after two weeks adaptation to new conditions, a total number of 270 fingerlings were distributed into nine 300-l fiberglass tanks, equipped with aeration system in three treatments including 4, 8 and 16 days starvation (each in 3 replic...

Food deprivation, as well as treatment with metabolic inhibitors, suppress steroid hormone-induced estrous behavior in ovariectomized (OVX) Syrian hamsters. Previous work indicates that 48 h of food deprivation decreases the number of detectable estrogen receptor immunoreactive (ERIR) cells in the ventromedial hypothalamus (VMH) and the area just lateral to it (VLH), increases the number of ERI...

Eretmocerus warrae (Naumann and Schimdt) is a thelytokous aphelinid parasitoid of the greenhouse whitefly, Trialeurodes vaporariorum (Westwood). It was first detected in New Zealand in 1997 during a survey of greenhouses in Auckland. We investigated the effects of certain duration of food and host deprivation after emergence on feeding, oviposition behavior and egg resorption of E. warrae with ...

Goal-directed behavior is governed by internal physiological states and external incentives present in the environment (e.g. hunger and food). While the role of the mesocorticolimbic dopamine (DA) system in behavior guided by environmental incentives has been well studied, the effect of relevant physiological states on the function of this system is less understood. The current study examined t...

Around one billion people live in extreme poverty, suffering from economic deprivation so severe that they must struggle daily for survival. Extreme poverty is sometimes defined as living on under $1 a day, but more accurately it is the lack of reliable access to basic needs, including adequate food, basic health services, safe drinking water and connectivity with the wider world (via roads, po...

Food hoarding plays an important role in the energetic repertoire of a variety of mammalian species. Both food hoarding and food intake have been examined in rodents using several energetic challenges including food deprivation, treatment with metabolic fuel blockers, and enhancement of fuel storage. In the present experiment, we examined food hoarding by female jirds (Meriones shawi), a desert...

Avian kidneys have loopless and looped nephrons; a countercurrent multiplier mechanism operates in the latter by NaCl recycling. We identified an aquaporin-2 (AQP2) homolog in apical/subapical regions of cortical and medullary collecting duct (CD) cells in kidneys of Japanese quail (q), Coturnix japonica. We investigated whether undernutrition during the embryonic/maturation period retards kidn...

Ma huang, the dried plant stem of ephedra intermedia Schrenk et C.A., contains an ephedrine-type alkaloid and has been used for weight loss. Neuropeptide Y (NPY), a 36-amino acid peptide, is concentrated in the hypothalamus and stimulates feeding desire. In this study, the effect of ma huang on the expressions of NPY in the hypothalamus of rats was investigated using immunohistochemistry. Food-...