| Author/Editor | Valentinčič, Tine | |
| Title | Taste and olfactory stimuli and behavior in fishes | |
| Type | članek | |
| Source | In: Von der Emde G, Mogdans J, Kapoor BG, editors. The senses of fish: adaptations for the reception of natural stimuli. New Delhi: Narosa publishing house, | |
| Publication year | 2004 | |
| Volume | str. 90-108 | |
| Language | eng | |
| Abstract | When searching for food different fish species use the same sensory mechanisms differentially. At one extreme there are omnivorous fishes such as catfish and carp that, in addition to vision, use the taste system to excite and release reflex responses and Ihe olfactory system to excite and discriminate chemical stimuli. On the other extreme are predatory fishes that detect prey visually and, if not conditioned differentially at fry and flngerling stages, do not use chemosensory information for food finding at ali. Depending on the mechanisms that they use to detect and collect food, the fishes that have been studied to date occupy the following ecological niches. (1) Bullhead catfish (Amelurus melas) type omnivorous niche: bullhead cattishes use chemical and tactile senses to release appetitive and consummatory phases of (ceding behavior. They also detect prey by the passive electric sense. (2) Channel catfish (Ictalurus puncf.rtus) type omnivorous niche: channel catfish use vision for predation and, in addition, chemical and tactile senses. (3) Carp (Cyprinus carpio) and goldfish (Carrasius auratus) type omnivorous niche: carp use visual and chemical senses for food colleclion, they have tastecontrolled reflex snapping/biting mechanisms and, in addition, they use oral food sorting to separate edible from inedible objects. (4) Rainbow trout (Oncorhyncus mykiss) type visual hunters niche farmraised rainbow trout use vision and/or olfaction to get excited and search for food. (5) Exclusively visual hunters niche. In nature, European huchen (Hucho hucho) and waileye (Stizostedion vitreum) consume exclusively living prey such as fish and crustaceans that they locate by vision. (Abstract truncated at 2000 characters) | |
| Descriptors | BEHAVIOR, ANIMAL FEEDING BEHAVIOR TASTE CHEMORECEPTORS SMELL RECEPTORS, ODORANT OLFACTORY PATHWAYS PREDATORY BEHAVIOR FISHES |