dendroctonus rufipennis การใช้

The spruce beetle " Dendroctonus rufipennis"
The most important bark beetle species in the Kawuneeche Valley are mountain pine beetle ( " Dendroctonus ponderosae " ) and spruce beetle ( " Dendroctonus rufipennis " ).
Ohsawa et al . ( 2000 ) isolated fungi from " Dendroctonus rufipennis " and " Polygraphus rufipennis " and from discoloured wood around their galleries in white spruce in Canada . " Leptographium abietinum " was the most commonly isolated blue stain fungus for both beetle species.
Between 1987 and 2000 the largest known epidemic of spruce bark beetle ( " Dendroctonus rufipennis " ) caused the death of 90 % of white, Sitka, and hybrid Lutz spruce, almost all of the mature spruce trees, in a 3.2 million acre forest in the Kenai Peninsula and Copper River.