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Keyword: Dendroctonus ponderosae

Augmenting the existing survey hierarchy for mountain pine beetle red-attack damage with satellite remotely sensed data

Publications Posted on: July 24, 2007
Estimates of the location and extent of the red-attack stage of mountain pine beetle (Dendroctonus ponderosae Hopkins) infestations are critical for forest management. The degree of spatial and temporal precision required for these estimates varies according to the management objectives and the nature of the infestation.

Genetic architecture of differences in fitness traits among geographically separated Dendroctonus ponderosae populations

Publications Posted on: May 29, 2007
The mountain pine beetle, Dendroctonus ponderosae Hopkins (Coleoptera: Curculionidae, Scolytinae) (MPB), is widely distributed across western North America spanning 25 degrees latitude and more than 2,500 m elevation.

Genetic and phenotypic resistance in lodgepole pine to attack by mountain pine beetle

Publications Posted on: May 29, 2007
The recent outbreak of mountain pine beetle (MPB) (Dendroctonus ponderosae) in British Columbia provided an opportunity to examine genetic variation of differential attack and resistance in a 20-year old lodgepole pine open-pollinated (OP) family trial.

Landscape-scale genetic variation in a forest outbreak species, the mountain pine beetle (Dendroctonus ponderosae)

Publications Posted on: April 02, 2007
The mountain pine beetle Dendroctonus ponderosae is a native species currently experiencing large-scale outbreaks in western North American pine forests. We sought to describe the pattern of genetic variation across the range of this species, to determine whether there were detectable genetic differences between D.

Temperature determines symbiont abundance in a multipartite bark beetle-fungus ectosymbiosis

Publications Posted on: April 02, 2007
In this study, we report evidence that temperature plays a key role in determining the relative abundance of two mutualistic fungi associated with an economically and ecologically important bark beetle, Dendroctonus ponderosae. The symbiotic fungi possess different optimal temperature ranges. These differences determine which fungus is vectored by dispersing host beetles as temperatures fluctuate over a season.

Mountain pine beetle infestations in relation to lodgepole pine diameters

Publications Posted on: October 06, 2006
Tree losses resulting from infestation by the mountain pine beetle (Dendroctonus ponderosae Hopkins) were measured in two stands of lodgepole pine (Pinus contorta Dougl.) where the beetle population had previously been epidemic. Measurement data showed that larger diameter trees were infested and killed first. Tree losses ranged from 1 percent of trees 4 inches (d.b.h.) to 87 percent of those 16 inches and greater d.b.h.

Testing Verbenone for reducing mountain pine beetle attacks in ponderosa pine in the Black Hills, South Dakota

Publications Posted on: September 07, 2006
In 2000 and 2002, Verbenone, a compound with anti-aggregation properties for mountain pine beetle, Dendroctonus ponderosae, was tested for reducing attacks by the insect in Ponderosa pine, Pinus ponderosae forests.

Mountain pine beetle population sampling: inferences from Lindgren pheromone traps and tree emergence cages

Publications Posted on: July 06, 2006
Lindgren pheromone traps baited with a mountain pine beetle (Dendroctonus ponderosae Hopkins (Coleoptera: Curculionidae, Scolytinae)) lure were deployed for three consecutive years in lodgepole pine stands in central Idaho. Mountain pine beetle emergence was also monitored each year using cages on infested trees. Distributions of beetles caught in pheromone traps and emergence cages were compared.

Is self-thinning in ponderosa pine ruled by Dendroctonus bark beetles?

Publications Posted on: June 20, 2006
Stand density of even-aged stands of ponderosa pine in California seems to be ruled by Dendroctonus bark beetles, rather than the suppressioninduced mortality common for other tree species. Size-density trajectories were plotted for 155 permanent plots in both plantations and natural stands.