ПРОУЧВАНЕ НА ПРЕДСТАВИТЕЛИТЕ ОТ СЕМЕЙСТВО COCCINELLIDAE В НАСАЖДЕНИЯ С МАСЛОДАЙНА РОЗА (ROSA DAMASCENA MILL.). (Bulgarian)

The study in the plantations of red oil-bearing rose in the area of the Institute for roses and aromatic plants established the presence of four species of family Coccinellidae. The species Coccinella septempunctata L. and Harmonia axyridis Palas have the highest density during the study period, 43.9% and 41.5%. The results show a drastic increase in the density of the introduced species Harmonia axyridis Palas in the past few years. This species appears later than the others, but has a relatively faster rate of development, and since May even outnumbers the representatives of Coccinella septempunctata L. According to these data, in the coming years the Harmonia axyridis Palas may displace the seven-spotted ladybug, as the main aphidofag in oil-bearing rose plantations, and thus can disrupt the sustainable balance of ladybug density. [ABSTRACT FROM AUTHOR]

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