spruce beetle

Comparison of endemic and epidemic populations of the spruce beetle (Ips typographus japonicus Niijima) in Hokkaido.

Forest fires in the Kenai refuge have worsened, and a vicious 15-year spruce beetle epidemic that lasted well into the 1990s wiped out huge numbers of trees.

A number of the trees were planted in Gunnison Ranger District in southwestern and south-central Colorado, where since 2010, ravages of the spruce beetle epidemic have killed nearly all of the spruce trees that are roughly more than five years old.

Use of semiochemicals of secondary bark beetles to disrupt spruce beetle attraction and survival in Alaska.

In Europe, windthrown spruce provide habitat for buildup of the bark beetle Ips typographus and in western North America for buildup of spruce beetle, Dendroctonus rufipennis (Coleoptera: Scolytidae).

Similarly, last year, the reddish-black spruce beetle infested five times as many acres in Colorado as it did in 2009.

Pathogenicity of Sitka spruce by Ceratocystis rufipenni and Leptographium abietinum, bluestain fungi associated with the spruce beetle. Canadian J.

These changing conditions have contributed to a severe outbreak of the spruce beetle (Dendroctonus rufipennis Kirby) affecting almost two-thirds of a white spruce (Picea glauca) forest in the region estimated at 600000 ha (ACIA, 2004; Garbutt, 2005; Garbutt et al., 2007; Ogden, 2007).

Recent droughts have weakened Colorado's forests, and other types of bark beetles are spreading, too, including the spruce beetle, the white pine beetle and the Ips beetle that is devastating pinon trees in southwest Colorado.

Darrel told Jody that the beetle lived "under the bark." This conversation about Darrel's spruce beetle was the beginning of Jody and Darrel's further inquiry.