Mission VNIILM Sakhalin

From 7 to 17 July VNIILM staff conducted a survey of mass outbreak of bark beetle breeding Ussuri Polygraphus proximus in silver fir forest Krasnogorsk Sakhalin Oblast. These stands in 2009 - 2012 years. were, to a large extent, damaged tracks Siberian kokonopryada Dendrolimus sibiricus , fir and partially destroyed.

In the photo: The stand Sakhalin fir, damaged tracks Siberian kokonopryada

At the outbreak of reproduction was studied faunal composition entomophages this pest. In addition, the high number of caterpillars found nun moth Lymantria monacha (photo 2), which threatens fir significant defoliation. Found that regional peculiarities phenology nuns are such that the time required for all phases of its ontogeny differ greatly from those that are common in continental populations it. This makes it impossible to use the recommendations for the examination, developed on the basis of the biology of European and Siberian populations. For peculiar conditions of Sakhalin Island to be developed regional guidelines on the management and monitoring of the implementation of forest-pathological lesions nun surveys.

In the photo: Butterfly nun moth on the trunk Sakhalin fir

This article has been translated by machine translation.