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Massive outbreaks of mountain pine beetles in western North America after about 2005 have killed millions of acres of forest from New Mexico to British Columbia. [20] Bark beetles enter trees by boring holes in the bark of the tree, sometimes using the lenticels, or the pores plants use for gas exchange, to pass through the bark of the tree. [3]
Mountain pine beetles can damage whole regions of forest. Mountain pine beetles affect pine trees by laying eggs under the bark. The beetles introduce blue stain fungus into the sapwood that prevents the tree from repelling and killing the attacking beetles with tree pitch flow. The fungus also blocks water and nutrient transport within the tree.
In response to the unprecedented spread of bark beetles in the Rocky Mountains and other parts of the western United States, the U.S. Forest Service formed the Western Bark Beetle Research Group (WBBRG) in 2007—a collaboration between scientists from three research stations that pools knowledge and resources to better understand the threat and eventually develop a strategy to combat it. [10]
Tiny bark beetles, namely the Ips engraver and southern pine varieties, have been killing millions of trees across Louisiana and Mississippi after a severe drought last year left forests and woods ...
Like most other plants, pines come with specific insect and disease problems. One of the most common causes of pine death in Florida are bark beetles.
Still, southern pine beetle infestations in 2023 represented "the most wide-spread activity in the Southern region in the past two decades," according to the information center. Southern pine ...
The mountain pine beetle has killed large numbers of the lodgepole pine trees in the northern mountains of the US state of Colorado. The more recent outbreak of another bark beetle pest, the spruce beetle, is threatening higher-elevation forests of Engelmann spruce. [1] Chemical prevention is effective but too costly for large-scale use.
Dendroctonus brevicomis, the western pine beetle, is a species of crenulate bark beetle in the family Curculionidae. It is found in North America [ 1 ] [ 2 ] [ 3 ] and parts of Mexico. [ 4 ] It is known as a destructive pest of ponderosa and Coulter pine trees. [ 5 ]