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Sunday, July 12, 2020 | History

2 edition of Predators of the Douglas-fir beetle in western Oregon found in the catalog.

Predators of the Douglas-fir beetle in western Oregon

Bruce Dudley Cowan

Predators of the Douglas-fir beetle in western Oregon

by Bruce Dudley Cowan

  • 281 Want to read
  • 38 Currently reading

Published by Agricultural Experiment Station, Oregon State University in Corvallis, Or .
Written in English

    Subjects:
  • Cleridae -- Oregon.,
  • Douglas fir beetle -- Predators of -- Oregon.,
  • Predatory insects -- Oregon.,
  • Douglas fir beetle -- Parasites -- Oregon.

  • Edition Notes

    Statement[B.D. Cowan and W.P. Nagel].
    SeriesTechnical bulletin -- 86., Technical bulletin (Oregon State University. Agricultural Experiment Station) -- 86.
    ContributionsNagel, William P. 1929-
    Classifications
    LC ClassificationsQL596.C62 C68 1965
    The Physical Object
    Pagination32 p. :
    Number of Pages32
    ID Numbers
    Open LibraryOL18204139M

    Anobiids are typically pests of softwoods (e.g., Douglas-fir, hemlock, cedar), but certain species occasionally are found in hardwoods such as maple, walnut, and oak. The western deathwatch beetle, Hemicoelus gibbicollis, is responsible for most of the beetle-related damage to wooden structures along coastal areas. Although common in older. Predicting post-fire Douglas-fir beetle attacks and tree mortality in the Northern Rocky Mountains. Canadian Journal of Forest Research. We also developed a guide to predicting post-fire Douglas-fir mortality and Douglas-fir beetle attacks. It is a two-part GTR.

    The Douglas-fir beetle prefers felled trees, slash, stumps, and windfall as well as trees that have been damaged or stressed by factors such as the urban environ-ment, defoliators, or root disease. Adult Douglas-fir beetles are small, 4—7 mm, cylindrical, and usually brown or black. They bore into the bark of trees and lay eggs in galleriesFile Size: 1MB. Black Bear Damage to Forest Trees in Northwest Oregon 2 METHODS Aerial Survey The aerial survey was flown between June 11 and J at approximately feet above the forest canopy in the Oregon Department of Forestry twin-engine Partenavia aircraft with a pilot and two observers. Average air speed was 90 miles per hour.

    The Douglas-fir beetle (Dendroctonus pseudotsugae Hopk.) is an important native pest throughout the range of its principal host, Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco). Western larch (Larix occidentalis Nutt.) is also occa-sionally attacked. Damage caused by this beetle has been most extensive in the interior of British Columbia File Size: KB. Abstract. The fir engraver beetle, Scolytus ventralis LeConte (Coleoptera: Scolytidae), was first described from two specimens collected at Vancouver, Washington, but the species has been subsequently recorded throughout the western United States and British Columbia. 20,55 Its primary hosts are true firs, Abies; specifically white fir (A. concolor), California red fir (A. magnifica), and Cited by:


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Predators of the Douglas-fir beetle in western Oregon by Bruce Dudley Cowan Download PDF EPUB FB2

Douglas -fir Beetle Richard F. Schmitz and Kenneth E. Gibson The Douglas-fir beetle (Dendroctonus pseudotsuqae Hopk.) infests and kills Douglas-fir throughout most of its range in western United States British Columbia and Mexico.

Occasionally western larch trees are infested when growing among Douglas-fir under attack. Attacks in stand-File Size: KB. The Douglas -fir beetle, Dendroctonus pseudotsugae Hopkins (Coleoptera: Scolytidae), is one of the most destructive insects of Douglas -fir, Pseudotsuga menziesii (Mirb.) Franco, throughout its range.

In western Oregon the Douglas -fir beetle normally infests only windthrown timber, and is usually able to attack standing trees only. Douglas-fir beetle (Dendroctonus pseudotsugae), another close relative of the spruce beetle and mountain pine beetle, is an important native bark beetle of mature Douglas-fir (Pseudotsuga menziesii) forests across most of the aks tend to be associated with mature Douglas-fir forests (average stand diameters greater than 14 inches at feet from the forest floor) coupled with.

Progress 01/01/01 to 12/31/01 Outputs Results from a study of the kairomonal response of Douglas-fir beetle predators to selected semiochemicals in eastern Oregon were published.

These results confirmed that Thanasimus undatulus (Cleridae) uses seudenol to locate its prey habitat and Temnochila chlorodia uses exo-brevicomin for the same purpose. Forest Insect and Disease Identification and Management Training Manual, USDA, Forest Service, R-1, Timber, Coop.

Forestry and Pest Management, Idaho Department of Lands, Bureau of Private Forestry - Insect and Disease Section, Montana Department of State Lands, Division of Forestry Douglas-fir beetle is the most destructive bark beetle attacking Douglas-fir in the Northern Region. Using MCH to Protect Trees and Stands from Douglas-fir Beetle Infestation Darrell W.

Ross Richardson Hall Department of Forest Ecosystems and Safety Oregon State University Corvallis, OR Ken Gibson (Retired) USDA Forest Service throughout the western U.S.

to prevent Douglas-fir beetle attacks. To date, there have been no. QUICK GUIDE SERIES FM Douglas-fir Beetle About Douglas-fir Beetle Douglas-fir beetle (Dendroctonus pseudotsugae) is the most destructive bark beetle of mature Douglas-fir forests in western North America.

It is a native insect found throughout the range of its only host tree, Douglas-fir, from southern Canada to northern Size: KB. Douglas-fir beetle. The Douglas-fir beetle, Dendroctonus pseud ot Hopkins, is the most destructive insect pest of Douglas-fir, Pseudotsuga menziesii (Mirb.) Franco, one of the most important timber species of western North America.

The beetle is native to North America and kills saw. Douglas-Fir Beetle Biological Control. Dendroctonus pseudotsugae Hopkins. From: Bellows, Thomas S.,Carol Meisenbacher, and Richard C.

Reardon,Biological Control of Arthropod Forest Pests of the Western United States: A Review and Recommendations, USDA, FS, FHTET Origin: North America. Range in North America: Throughout the range of Pseudotsuga menziesii in western North.

Douglas-fir beetle populations were monitored before and after thinning and felling of trees to create down wood in an year-old Douglas-fir plantation in the Oregon Coast Range.

Oregon’s other state forests are also filled with these trees – the Clatsop, Santiam, Elliott – even some in the southwest corner of the Sun Pass. Forests of these trees are some of the most popular recreation areas in the state. It is the Douglas-fir, and there is no other tree like it.

Visit one of Oregon’s forests today and find out Size: KB. Characteristic pattern of Douglas fir beetle egg and larval tunnels. Photo courtesy of Oregon Department of Forestry. The Douglas fir beetle is a bark beetle that normally breeds in felled, injured, windthrown and root-diseased Douglas fir.

It may also attack western larch but can only produce its brood in downed trees. Distribution: Abundant in western North America from British Columbia to Mexico. Grows at sea level along the coast to ft. ( m) in the Cascades and Sierras, and to 11, ft.

( m) in the southern Rockies. Douglas-fir beetle definition is - a bark beetle (Dendroctonus pseudotsugae) that is very destructive to Douglas fir and sometimes to western larch. Kurt Ingeman Integrative Biology Novel predators and naïve prey: modeling suboptimal responses to introduced predators Kristen Finch Botany & Plant Pathology BULL'S EYE.

Can DART Mass Spectrometry distinguish source origin for western Oregon Douglas-fir wood cores. Break Keynote Speaker: Dr.

Jim Estes. Characteristic pattern of Douglas-fir beetle egg and larval tunnels. Photo courtesy of Oregon Department of Forestry. The Douglas-fir beetle is a bark beetle that normally breeds in felled, injured, windthrown or root-diseased Douglas-fir.

It may also attack western larch, but can only produce brood in downed trees. The Douglas-fir beetle appears to occur in two situations: apparently healthy, large-diameter, host stands where isolated, infested dead-tree groups increase to several to a few dozen trees over a few years and then decrease; and in seriously stressed stands such as those suffering from insect defoliation or exposure to fire that did not ruin the phloem tissue.

Douglas-fir is generally the most susceptible tree in western Oregon to bark beetle outbreaks after storm or wind events.

Aerial survey records indicate that there is often a direct increase in Douglas-fir mortality following significant wind events, but a similar pattern has not been observed for true firs, except in periods of sustained drought.

Beetle Bonanza Back on J while my wife and I were headed to a different destination, we passed by a logging mill operation in Black Forest, northeast of Colorado Springs.

"Predators of the Douglas-Fir Beetle in Western Oregon," Technical Bulle Agricultural Experiment Station, Oregon State University, Corvallis, Oregon. 32 pp Author: Bug Eric.

Major forest trees in the zone are Douglas-fir, western hemlock and western redcedar (Table 3). Note that, although it is called the Western Hemlock Zone after the major climax species, large areas are dominated by forests of Douglas-fir. Much of the zone has been logged, or burned, or both during the last years; and Douglas-fir is often an File Size: 8MB.

In early June the tissues of Douglas fir and western hemlock logs contained significantly higher ethanol concentrations and ambrosia beetle (Trypodendron lineatum and Gnathotrichus spp.) densities.Douglas-Fir Beetle — Biology Adult Douglas-fir beetles (Dendroctonus pseudotsugae) are dark brown to black with reddish wing covers, and measure about to 7 mm in length.

The life cycle is usually one year, and two broods may be produced. The main flight period usually occurs in May and June; a.beetle will not invade Douglas-fir, for example, and the alder bark beetle won’t invade Douglas-fir. But the host list for the causal agent of sudden oak death is over plant species!

The biggest concern is non-native invasive pests, such as emerald ash borer, Asian longhorned beetle, and Sirex wasps. Proper firewood storage.