Behavioral effects of adrenaline and noradrenaline injected into the lateral ventricles of the pigeon (Columba livia).
The behavioral effects of intraventricular 1-microliter injections of adrenaline and noradrenaline (both in a concentration of 30 nmol/microliters) were examined in pigeons bearing cannulae chronically implanted into the lateral ventricles. Injections of either catecholamine evoked immediate and intense bouts of feeding behavior, followed by long-lasting increases in sleep duration (50-90% higher than vehicle-treated subjects) in pigeons given free access to food during the observation period. Pigeons treated with adrenaline or vehicle only, and placed in a cage without the feeder set (food-deprived during the observation period), exhibited late increases in exploratory and preening behaviors, and less sleep than controls (vehicle-treated pigeons with free access to food). These data suggest that post-prandial sleep in this situation may represent a by-product of feeding-related processes evoked by both catecholamines.
Ravazio
M R
MR
Departamento de Ciências Fisiológicas, Universidade Federal de Santa Catarina, Florianópolis, Brasil.
Canello
M
M
Paschoalini
M A
MA
Marino-Neto
J
J
D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects*; D010856:Columbidae; D004837:Epinephrine / Q000008:administration & dosage / Q000494:pharmacology*; D005106:Exploratory Behavior / Q000187:drug effects; D005247:Feeding Behavior / Q000187:drug effects; D005260:Female; D006120:Grooming / Q000187:drug effects; D007276:Injections, Intraventricular; D008297:Male; D009638:Norepinephrine / Q000008:administration & dosage / Q000494:pharmacology*; D014677:Pharmaceutical Vehicles / Q000008:administration & dosage; D012890:Sleep / Q000187:drug effects*
D014677:Pharmaceutical Vehicles; D009638:Norepinephrine; D004837:Epinephrine