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142

Processes of reproduction in mollusks are supported by many neuropeptides including the conopressin. During ethological and pharmacological investigation of reproductive functions of the conopressinergic system in the pond snail Lymnaea stagnalis we revealed its stimulating effect only on the egg laying, with no effect, however, on the copulation behavior. Exogenous conopressin provokes egg laying within 24 hours. Action of the peptide is realized through the conopressin receptors since antagonists of these receptors prevent egg laying. It is revealed that the action of conopressin is species-specific for reproduction behavior because a related peptide, namely vasopressin, does not affect the process of reproduction in Lymnaea stagnalis. Thus, one of the functions of the conopressinergic system of Lymnaea stagnalis is to start the female reproduction behavior.

Репродуктивные функции нейропептида конопрессина у пресноводного моллюска Lymnaea stagnalis
Пономарева Е. В.; Чиган Ф. -Х.;