INFLUENCE OF THE NURTURE DIFFERENCE ON THE PHYSIOLOGICAL CONDITION OF AMERICAN WHITE BUTTERFLY HYPHANTRIA CUNEA DRURY (LEPIDOPTERA, ARCTIIDAE)

The influence of distinction of forage on a physiological condition of specimens of the Apsheron population of the American white butterfly is studied for the first time. It was proved that the beginning and duration of the pupate process doesn’t depend on the systematic position of a fodder plant on which the American white butterfly caterpillars develop. The physiological condition, i.e. metabolism level depends on the forage composition. In the physiological context, the 2nd generation pupae are much stronger than the 1st and if conditions allow to be formed, even the 3rd generation. It is established that depression level in the American white butterfly population dynamics is defined by the physiological condition of wintering pupae, in particular the quantity of reserve substances in a adipose body.