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 turns 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 initial sequence of food searching and biting/snapping behaviors; however, an effective olfactory, 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 in adult 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.
journal_name
Chem Sensesjournal_title
Chemical sensesauthors
Valentincic T,Caprio Jdoi
10.1093/chemse/22.4.375subject
Has Abstractpub_date
1997-08-01 00:00:00pages
375-82issue
4eissn
0379-864Xissn
1464-3553journal_volume
22pub_type
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