Cellular Basis of Temperature Dependence of the Food-Procuring Activity of the Mollusc Lymnaea stagnalis

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Neuronal correlates of temperature dependence of alimentary behavior were studied in experiments on molluscs. It was found that a decrease of temperature led to suppression of food-procuring activity of the animals: to a decrease of the consumed food amount and of the number of food holes on the substrate. These behavioral changes are associated with a fall of impulsation frequency of the motoneuron alimentary network and with decrease of efficiency of synaptic transmission within the limits of central generator of the Lymnaea stagnalis alimentary rhythm. It is suggested that change of character of intercellular interactions within the CNS limits underlies the temperature dependence of the mollusc food-procuring activity.

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