Abstract
AbstractIn urodele amphibians, the olfactory input is important in the triggering and controlling of sexual and feeding behaviours. In an aquatic environment, a water sample is drawn through the nostrils to the olfactory organs. This sampling consists of the following acts: the buccal floor is pressed down by the action of the tongue muscles and skeleton, the consequence of which is the transmission of a depression to the olfactory chambers via the choanas; water is then aspirated and flows over the sensory areas of the olfactory mucosa before entering the buccal cavity via the choanas; water is finally expelled in front of the animal, the opening of the jaws being synchronous to a fast upward movement of the buccal floor. A thermistor telemetry technique enabled us to show a relationship between smelling behaviour and feeding behaviour, particularly variations in intensity and frequency of smelling behaviour related to the chemical qualities of the surroundings.
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