Response of the gypsy moth Lymantria dispar L. (Lepidoptera, Lymantriidae) to the content of allelochemicals in birch leaves (Betula pendula Roth) |
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| Authors: | S. A. Bakhvalov E. E. Shults V. V. Martemjanov Zh. O. Markina G. A. Tolstikov |
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| Affiliation: | (1) Institute for Systematics and Ecology of Animals, Siberian Division of Russian Academy of Sciences, 930091 Novosibirsk, Russia;(2) Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia |
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| Abstract: | Structural and functional characteristics of the gypsy moth population in a birch forest were found to be correlated with the level of defoliation and the content of allelochemicals in the foliage. One year after defoliation, the content of flavonoids, total lipid fractions, fatty alcohols, and alcohols increased in the foliage of the heavily (by 75%) damaged trees, whereas the content of free sterols and triterpenes decreased. These changes were associated with low vitality of the insects and a sharp drop in the population density. |
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