1 edition of Effects of the Douglas-fir tussock moth nucleopolyhedrosis virus (Baculovirus) on three species of salmonid fish found in the catalog.
Effects of the Douglas-fir tussock moth nucleopolyhedrosis virus (Baculovirus) on three species of salmonid fish
by Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station in Portland, Or
Written in English
|Statement||G. M. Banowetz ... [et al.]|
|Series||USDA Forest Service research paper PNW -- 214|
|Contributions||Banowetz, G. M, Pacific Northwest Forest and Range Experiment Station (Portland, Or.), United States. Forest Service|
|The Physical Object|
|Pagination||6 p. ;|
Treatment Options for Douglas-Fir Tussock Moth About Douglas-fir Tussock Moth Douglas-fir tussock moth (Orgyia pseudotsugata) is a defoliator of Douglas-fir, true fir (Abies spp.) and spruce (Engelmann and Colorado blue) trees. Native to Colorado’s forests, the insect also may impact Colorado blue spruce in urban settings. Orgyia pseudotsugata. Pest description and damage The adult male is brown to gray and about 1 inch across and flies during the day in search of the wingless female moth. The larvae feed on pine needles and the mature larvae are about an inch long, hairy, gray or light brown, with black heads.
Oct 01, · The Douglas-fir tussock moth is a native defoliator of Douglas-fir, true firs (such as grand fir) and spruce. For reasons unknown, a year or two prior to an outbreak of Douglas-fir tussock moth on forested land, we tend to see defoliation of ornamental trees such as blue spruce. Given the number and area of defoliated blue spruce I have been. The Douglas-fir tussock moth The Douglas-fir tussock moth is a native insect in the low-lying, dry-belt Douglas-fir regions of southern British Columbia. Its distribution ranges from the lower mainland to Cache Creek, areas of the north and south Thompson Valley and into the Okanagan and Similkameen valleys. Outbreaks of tussock moth occur.
Jul 12, · The caterpillar of the Douglas-Fir Tussock Moth (Orgyia pseudotsugata) feeds on firs, spruce, Douglas-firs, and other evergreens of the western United States and are a major cause of their defoliation. Young caterpillars feed exclusively on new growth . Orgyia pseudotsugata (Lymantriidae) the Douglas-fir tussock moth. Adults: Douglas-fir and true firs. In B.C. it feeds primarily on Douglas-fir. Outbreaks periodically develop explosively and after about 3 years subside abruptly due to a nucleopolyhedrosis virus. During outbreaks severe economic damage may occur. References and Links.
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Effects of the Douglas-fir tussock moth nucleopolyhedrosis virus (Baculovirus) on three species of salmonid fish. Portland, Or.: Pacific Northwest Forest and. Effects of the Douglas-fir tussock moth nucleopolyhedrosis virus (Baculovirus) on three species of salmonid fish / Related Titles. Series: USDA Forest Service research paper PNW ; By.
Banowetz, G. (Gary Michael). The Douglas-fir tussock moth nucleopolyhedrosis virus, as part of the safety testing required for registration by the EPA, was tested on three species of salmonid fishes to determine any adverse effects.
Effects of the Douglas-fir tussock moth nucleopolyhedrosis virus (Baculovirus) on three species of salmonid fish by Banowetz, G. (Gary Michael) ; Pacific Northwest Forest and Range Experiment Station (Portland, Or.). The Douglas-fir tussock moth (Orgyia pseudotsugata) is a moth of the subfamily Lymantriinae found in western North America.
Its population periodically irrupts in cyclical evenousaccess.com caterpillars feed on the needles of Douglas fir, true fir, and spruce in summer, and Class: Insecta. The production and persistence of the nuclear polyhedrosis virus of the Douglas-fir tussock moth, Orgyia pseudotsugata, has been determined by periodic sampling of a series of natural and induced evenousaccess.com have demonstrated that low prevalence rates during the early instars result mainly in larval mortality of older instars which ultimately leads to the greatest production and persistence Cited by: Hosts: Douglas-fir, white fir and spruce Figure 8.
Adult male (left) and femail (right) Douglas-fir moth. Symptoms/Signs: The caterpillar of the Douglas-fir tussock moth is grayish with brightly colored tufts of hair and a shiny black evenousaccess.com are also two long horns of black hairs behind the head and another at the rear of the body.
This is evidence of a recent outbreak of Douglas-fir tussock moth caterpillars. Over the course of about three years, tussock moth caterpillars defoliated almost 16, acres of white fir forests before the naturally-occurring virus that commonly controls their outbreaks spread widely enough to return populations to background levels.
Integrated pest management of the Douglas-fir tussock moth. l"or. Ecol, Manage., The Douglas-fir tussock moth is one of the most destructive forest defoliators in western North America. Densities of most tussock-moth populations fluctuate over time with considerable regular- evenousaccess.com by: 5.
Douglas-fir Tussock Moth Orgyia pseudotsugata Key Wildlife Value: The Douglas-fir tussock moth creates snags and down wood by severely defoliating and causing the death of all sizes of true fir and Douglas-fir trees. It also interacts with other disturbance agents, especially bark beetles, to.
Douglas-fir tussock moth (Orgyia pseudotsugata) is a native defoliator of spruce, Douglas-fir (Pseudotsuga menziesii) and true firs (Abies spp.), though will rarely feed on planted Colorado blue spruce in urban evenousaccess.com moth is a native species found throughout mixed-conifer forests in the western United States and southern British Columbia.
The Lymantriinae (formerly called the Lymantriidae) are a subfamily of moths of the family Erebidae. Many of its component species are referred to as "tussock moths" of one sort or another. The caterpillar, or larval, stage of these species often has a distinctive Class: Insecta.
Apr 01, · The long-term persistence of the nuclear polyhedrosis virus of the Douglas-fir tussock moth, Orgyia pseudotsugata (McDunnough), in forest soil has been established by bioassaying soil and duff samples from an area in which the last tussock moth outbreak took place in –Cited by: Dec 22, · Development and Evaluation of Methods To Detect Nucleopolyhedroviruses in Larvae of the Douglas-Fir Tussock Moth, The Douglas-fir tussock moth, Orgyia pseudotsugata McDunnough (Lepidoptera: Lymantriidae) How to determine the incidence of virus in egg masses.
In Douglas-fir tussock moth evenousaccess.com by: 6. Douglas-fir Tussock Moth Management Strategy Southern Interior Forest Health Program Lorraine Maclauchlan, Ph.D. Ministry of Forests, Lands and Natural Resource Operations, Thompson Okanagan Region Columbia Street Kamloops, B.C. V2C 2T3 The Douglas-fir tussock moth, Orgyia pseudotsugata, is a cyclical defoliator of Interior Douglas.
aerial application of nuclear polyhedrosis virus against douglas-fir tussock moth, orgyia pseudotsugata (mcdunnough) (lepidoptera: lymantriidae): i. impact in the year of application - volume issue - i.s. otvos, j.c. cunningham, l.m.
friskieCited by: Surviving stands are invariably in a weakened state, and very susceptible to other insects (such as the Douglas-Fir Beetle) and evenousaccess.comonally, about 20% of people and animals are allergic to Douglas-Fir Tussock Moth hairs.
These hairs are present on the larvae, the cast larval skins, the egg masses, the cocoons, and the female moth. *These products are not produced or registered in the U.S. at the present time. Pesticide Compatibility. Viruses particles per se are generally unaffected by pesticides, although some chlorine compounds should be expected to damage or destroy viruses if applied at the same time.
Baculovirus efficacy, however, can be altered in many ways by the effects of chemical pesticides on the host insect. A nucleopolyhedrosis virus in populations of the Douglas-fir tussock moth, Hemerocampa pseudotsugata, in California.
Dahlsten DL, Thomas GM. PMID: [PubMed - indexed for MEDLINE] MeSH Terms. California; Insect Viruses* Insects*Cited by: The Douglas-Fir Tussock Moth and Tussockosis Douglas-fir tussock moth mature larva (caterpillar) Male Douglas-fir tussock moth The Douglas-fir tussock moth is a native insect in the low-lying, dry belt Douglas-fir regions of southern British Columbia.
It is not an introduced species. It feeds primarily on Douglas-fir, and occasionally on. THE DOUGLAS-FIR TUSSOCK MOTH The Problem, Alternatives, and Impacts The environmental effects of Zectran tality assume an early presence of tussock moth virus disease in -These estimates were developed by the Insect and Disease Control Branch, U.S.
Forest Service, Region 6, and are based on a biologi.The Douglas-fir tussock moth, Orgyia pseudotsugata (McDunnough), is an important defoliator of spruce, Douglas-fir, true fir and other conifers in the Rocky Mountain region.
Feeding by the larvae can cause complete defoliation of heavily infested trees. Damage usually appears first in the tops of trees and progresses downward, sometimes over several years.Insect, virus, and material.
The cotton leaf worm, Spodoptera littoralis (Boisduval), was established at the laboratory conditions of 25 ± 2 °C and 65 ± 5% R.H. Newly hatched larvae were reared on semi-artificial diet (Shorey and Hale ).Pupae were collected in plastic cups until adult emergence. Adults were transferred into a chimney glass provided with sugar syrup 10% and tissue for.