1 edition of Western spruce budworm in the Northern Region found in the catalog.
Western spruce budworm in the Northern Region
|Statement||[prepared by Cooperative Forestry & Pest Management, Planning, Programming, & Budgeting, and Timber Management, in cooperation with the Lolo and Gallatin National Forests.|
|Series||Report -- 86-12., Report (United States. Forest Service. Northern Region) -- no.86-12.|
|Contributions||United States. Forest Service. Northern Region. Cooperative Forestry & Pest Management., United States. Forest Service. Timber Management., United States. Forest Service. Planning, Programming, and Budgeting.|
|LC Classifications||SB945.W539 W47 1986|
|The Physical Object|
|Pagination||42 p. :|
|Number of Pages||42|
Journal article: Report, Northern Region, State and Private Forestry, USDA Forest Service No pp pp. ref Abstract: Choristoneura occidentalis in Cited by: 9. Western spruce budworm feeding and oviposition behavior and the implications for host plant resistance. Northern Arizona University: M.S. Thesis. 93 p. Chen, Zhong; Kolb, Thomas E.; Clancy, Karen M. Effects of artificial and western spruce budworm (Lepidoptera: Tortricidae) defoliation of growth and biomass allocation of Douglas-fir.
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Western spruce budworm is the most widely distributed forest defoliator in western North America. Budworms have a one-year life cycle and are actually a small moth at full maturity. Here in the West, there can be severe infestations in healthy Douglas-fir, white fir and spruce.
Figure 3.—Egg mass of the western spruce budworm laid on Douglas-fir needle. Figure 4.— Fourth-stage western spruce budworm larva feeding on Douglas-fir needles. Figure 5.— Female pupa of the western spruce budworm Western spruce budworm in the Northern Region book among dead needles and larval frass and webbing.
Life History Throughout most of its range, the western spruce budworm File Size: KB. Since that year, infestations have frequently been reported in western Canada. The budworm was first recorded in in the United States, in Oregon. However, it was not initially recognized as a serious threat to coniferous forests in the western U.S.
In Atlantic Canada, the spruce budworm problem was noted as early as Class: Insecta. Throughout most of its range, the western spruce budworm completes one cycle of development from egg to adult within 12 months.
Moths emerge from pupal cases usually in late July or early August; in the southern Rockies, adults often begin emerging in early July. The adults mate, and within 7 to 10 days, the female deposits her eggs and then : Insecta.
Western spruce budworm outbreaks may result in significant modification of susceptible stands by reducing tree density and cover. Losses of existing cover may degrade the quality of habitat available for some wildlife species such as the northern spotted owl, and associated fuel accumulations may increase the risk of catastrophic wildfire.
A spruce is a tree of the genus Picea / p aɪ ˈ s iː ə /, a genus of about 35 species of coniferous evergreen trees in the family Pinaceae, found in the northern temperate and boreal regions of the Earth. Picea is the sole genus in the subfamily s are large trees, from about 20–60 m (about 60– ft) tall when mature, and have whorled branches and conical : Tracheophytes.
The western spruce budworm, Choristoneura occidentalis Freeman, is the most widely distributed and destructive defoliator of coniferous forests in Western North America.
It is one of nearly a dozen Choristoneura species, subspecies, or forms found throughout much of the United States and Canada. For more information on budworm biology, view Forest Insect & Disease Leaflet Western.
Get this from a library. Western spruce budworm in Idaho and Montana, status, impacts, and control alternatives for western spruce budworm in Idaho & Montana.
[United States. Forest Service. Northern Region.]. Relative to the s Spruce Budworm Infestation When an outbreak of the eastern spruce budworm (Choristoneura fumiferana) (Clem.) began in the boreal forests of eastern Canada and the bordering United States in the late s,changes of immense consequence to the forests and their inhabitants were set in ,the vastness and isolationFile Size: 1MB.
Balsam fir and white spruce are the preferred host species of the spruce budworm. Red, black and Colorado spruce are also suitable host trees. On occasion, tamarack, pine, and hemlock may be fed upon. In Saskatchewan, spruce budworm feeds on white spruce, balsam fir and to a lesser extent black spruce, as well as the Western spruce budworm in the Northern Region book Colorado Size: KB.
Budworm outbreaks may be sustained for 25 years or more. Host trees: Primarily Douglas-fir, with other tree species such as the true firs, larch and to a lesser degree, spruce, also impacted by the western spruce budworm.
Description and life cycle: The western. Outbreaks of the western spruce budworm in the American northern Rocky Mountain area from through Ogden, Utah: Intermountain Forest & Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors.
The western spruce budworm, Choristoneura occidentalis, is the most widely distributed and destructive forest defoliator in western North the Rockies, they most commonly infest Douglas-fir and white fir. Occasionally, they also attack Engelmann spruce, blue spruce and sub-alpine fir.
A.E. Hajek, K. van Frankenhuyzen, in Microbial Control of Insect and Mite Pests, Western Spruce Budworm. Western spruce budworm, Choristoneura freemani (formerly Choristoneura occidentalis), occurs west of the Continental Divide where it is most commonly associated with Douglas fir (P.
menziesii).Outbreaks are intermediate to those of the previous two species, causing severe. The spruce budworm, Choristoneura fumiferana, Clem., is the most significant defoliating pest of boreal balsam fir (Abies balsamea (L.) Mill.) and spruce (Picea sp.) in North America.
Historically, spruce budworm outbreaks have been managed via a reactive, foliage protection approach focused on keeping trees alive rather than stopping the outbreak. Region Forest Insects and Diseases Group R6–FI&D–TP–12–94 September Effects of the s Western Spruce Budworm Outbreak on the Malheur National Forest in.
range, 18 to 99 percent) than eastern spruce budworm mortality (mean budworm mortality, 17 percent; ra nge, 0 to 48 percent) follo wing temperatures of -2 to -3 °C.
This banner text can have markup. web; books; video; audio; software; images; Toggle navigation. generally known about predators of the spruce budworm. This review is restricted largely to predators of Choristoneura fumiferana, though reference is made to the jack pine budworm (C pinus Freeman) and the western spruce budworm (C occiden- talis Freeman).
We have taken the life-table approach, presenting what is known. spruce budworm is the most destructive pest of spruce and fir forests in North America the larvae are wasteful feeders as they only eat partial needles and then move on to other needles spruce budworm prefers balsam fir, but the name is associated with spruce as white spruce is a more desirable species historically to the forest industry.
Orthoptera of the Northern Great Plains Orthoptera Species File Online Pacific Northwest Moths Western Spruce Budworm Moth — Choristoneura occidentalis. Montana Field Guide. Montana Natural Heritage Program.
Retrieved on Fir (Abies)-Spruce budworm (Western) Choristoneura occidentalis. Pest description and damage Adult moths are mottled orange-brown and have a wingspan up to 1 inch.
The larvae are typically green to brown with a darker head and white tubercles in later stages. They grow to approximately 1 inch in length. Western spruce budworm outbreaks are often decades long in the interior West and defoliate extensive areas, which could give a visual impression that trees are dead and a serious fire hazard.
However, their impact on fire behavior is poorly understood, and mortality levels are low. The spruce budworm has been in the area for decades, forestry experts say.
Aroundthe population “exploded” between Sturgeon Falls and Sudbury, extending north to River Valley and beyond. Southwestern Region, USDA Forest Service, Federal Building, Gold Ave.
S.W., Albuquerque, New Mexico ABSTRACT. Western spruce budworm, Choristoneura occidentalis Freeman (Tor tricidae), is an important pest of Douglas-fir and white fir in the southwestern United States. Abstract.
The spruce budworm, Choristoneura fumiferana (Clemens), (Lepidoptera: Tortricidae) was first described from specimens collected in Virginia, 17 but this native insect occurs primarily in the northern boreal forest from Newfoundland west to the McKenzie River near 66°N.
53 The most extensive and destructive outbreaks have occurred in the maritime provinces (New Brunswick, Nova Scotia Cited by: Spruce budworm is a native moth that can have a serious impact on our spruce-fir forests in northern New Hampshire. The larvae feed on spruce and fir needles.
Typically the budworm populations increase to a peak and then collapse in a year cycle. The last New Hamsphire outbreak ended in PDF | Western spruce budworm (Choristoneura freemani Razowski; WSBW) is the most significant defoliator of coniferous trees in the western United | Find, read and cite all the research you need.
This finding contrasts with results from shorter time—scale studies conducted in northwestern U.S. and Canada (western spruce budworm) and eastern Canada (spruce budworm C.
fumiferana), where low precipitation and/or warmer temperatures were generally associated with by: The spruce budworm (Choristoneura fumiferana) is one of the most destructive native insects in the northern spruce and fir forests of the Eastern United States and of the time, the number of budworms remains at a low level.
However, every forty years or so, the population of budworms explodes to huge numbers, devastating the forest and destroying many trees, before dropping back.
The western spruce budworm is a damaging defoliator in British Columbia. Budworm feeding damage includes killing of mined buds by early-instar larvae and stripping of the current year's foliage primarily in the upper crown by mid- to late-instar larvae.
Budworms often consume only parts of needles and chew them off at their bases. This book is a synthesis of current knowledge about the insect and its hosts.
It summarizes most of the known information on the western spruce budworm and provides background for the recommendations contained in two management books: Managin f^ Trees and Stands Susceptible to Western Spruce Budworm, and. Western Spruce Budworm and Forest. Spatiotemporal dynamics of recent mountain pine beetle and western spruce budworm outbreaks across the Paciﬁc Northwest Region, USA Garrett W.
Meigsa,⇑, Robert E. Kennedyb, Andrew N. Grayc, Matthew J. Gregorya a Department of Forest Ecosystems and Society, Oregon State University, Richardson Hall, Corvallis, ORUSA bDepartment of Earth and Environment, Boston.
The Spruce Budworm Model One of the models discussed in this paper is of interest to us because it involves an insect pest found in northern Minnesota pineries, the spruce budworm (Choristoneura fumiferana).
The model was developed in Canada to describe infestations observed there, but is certainly relevant to northern Minnesota. Title. Natural mortality of the western spruce budworm, Choristoneura occidentalis, in Colorado / Related Titles. Series: USDA Forest Service research paper RM ; 81 By.
McKnight, Melvin E. Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.). No exact match for western spruce budworm washington (state). Showing nearby subjects.
Browsing Subjects: "Western Slavic languages" to "Westminster Hall (London, England)". Spruce budworm Choristoneura fumiferana Order Lepidoptera, Family Tortricidae; tortricids Native pest Host plants: Balsam fir is preferred, but white, red, and black spruces, larch, pine, and western hemlock are also susceptible.
Description: Adult moths are mostly gray, with a wing-span for males of 24 mm and for females of 26 Size: 56KB. Spruce (Picea)-Spruce budworm Choristoneura occidentalis Pest description and crop damage Green to brown larvae, up to 1 inch long, attack foliage and buds of fir and spruce.
Western spruce budworm, Choristoneura occidentalis Freeman, larvae on small Douglas-fir (Pseudotsuga menziesii var. glauca [Beissn.] Franco) and western larch (Larix occidentalis Nutt.) trees were protected from ant and bird predation during fourth instar to icantly greater budworm densities were found on protected trees than on the controls at the end of the experiment, and Cited by: 4.
Understanding the Life Cycle of the Western Spruce Budworm For more information on the western spruce budworm, please contact: British Columbia Ministry of Forests, Southern Interior Forest Region Western spruce budworm metamorphose to pupae in early to mid-July. Two weeks. Synchronous western spruce budworm outbreaks can occur over much of a host species' range, and we need a better understanding of the mechanisms driving the species’ population dynamics in order to predict climate change effects, mitigate ecological and resourceCited by: 1.The western spruce budworm (Choristoneura occidentalis) is an important native defoliator of interior Douglas-fir.P opulation levels periodically reach outbreak proportions.
Outbreaks have been recorded in British Columbia's interior forests from the early s up to the present. Inthe budworm's peak outbreak, more thanha were under attack, mostly in the southern interior.Northern Spruce Engraver (Ips perturbatus) Transparency % Pine Shoot Beetle (Tomicus piniperda) Western Spruce Budworm (Choristoneura occidentalis) Transparency % Air Pollution select a region of interest or multiple regions by using the control panel's Select tool and clicking on the map.