Author/Editor		Valentinčič, T; Caprio, J
Title		Visual and chemical release of feeding behavior in adult rainbow trout
Type		članek
Source		Chem Senses
Vol. and No.		Letnik 22
Publication year		1997
Volume		str. 375-82
Language		eng
Abstract		Feeding behavior of adult rainbow trout (Oncorhynchus mykiss) is released by visual and/or chemical stimuli. Detection of either a conditioned visual or a conditioned chemical stimulus creates an excitatory feeding state within the central nervous system which tourns on feeding behavior composed of swimming, turning and biting/snapping actions. Particular amino acids that are highly effective physiological taste stimuli that are also detected through olfaction (e.g. L-proline, L-alanine, L-leucine) release the intial sequence of food searching and biting/snapping behaviors; however, an effective olfaxtory, but poor gustatory, stimulus (e.g. l-arginine) is rarely effective behaviorally. After bilateral removal of the paired olfactory organs, visual stimuli alone release the entire set of feeding behavior patterns. Since amino acids that are highly potent physiological taste stimuli do not release either feeding behavior or reflex biting/snapping actions inadult anosmic rainbow trout, it is postulated that the olfactory system detects potent taste stimuli and provides the afferent input for arousal and the release of all feeding activity patterns.
Descriptors		FISHES FEEDING BEHAVIOR TASTE STIMULATION, CHEMICAL