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Monday, July 27, 2020 | History

2 edition of cartographic representation of spruce budworm, Choristoneura fumiferana (Clem.), infestation in eastern Canada, 1909-1966 found in the catalog.

cartographic representation of spruce budworm, Choristoneura fumiferana (Clem.), infestation in eastern Canada, 1909-1966

C. E. Brown

cartographic representation of spruce budworm, Choristoneura fumiferana (Clem.), infestation in eastern Canada, 1909-1966

Cartons montrant les infestations de la tordeuse des bourgeons de l"épinette Choristoneura fumiferana (Clem.), dans l"est du Canada, de 1909 à 1966 / préparé par C.E. Brown.

by C. E. Brown

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  • 38 Currently reading

Published by Dept. of Fisheries and Forestry in Ottawa .
Written in English

    Subjects:
  • Spruce budworm -- Canada, Eastern -- Maps.

  • Edition Notes

    Other titlesCartons montrant les infestations de la tordeuse des bourgeons de l"épinette Choristoneura fumiferana (Clem.), dans l"est du Canada, de 1909 à 1966.
    Statementcompiled by C.E. Brown =
    SeriesCanadian Forestry Service publication -- no. 1263, Publication (Canadian Forestry Service) -- no. 1263.
    Classifications
    LC ClassificationsSD13 .P8 no.1263
    The Physical Object
    Pagination4 p., [1] folded leaf of plates :
    ID Numbers
    Open LibraryOL15512396M

    The purpose of this study was to develop a cell culture process in a bioreactor for the production of a viral insecticide for the spruce budworm, Choristoneura fumiferana. Several cell lines were tested for their growth in serum-free medium suspension cultures.   Spruce budworm (SBW; Choristoneura fumiferana (Clem.)) is the primary forest defoliator in North America. SBW defoliation has affected tens of millions ha of forests during its periodic outbreaks and caused severe growth reduction and mortality of spruce-fir (Picea-Abies) species. Evaluating these damaging effects of SBW defoliation requires understandings of the variation and .

    COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus. Nitrogen (N) content and mass of sections of whole needles and mined needles created by spruce budworm, Choristoneura fumiferana, feeding on balsam fir, Abies balsamea, and white spruce.

    At least 12 taxa of conifer-feeding Choristoneura are currently recognized in North America, with the greatest diversity west of the Rocky Mountains. Five closely related species, the (eastern) spruce budworm, C. fumiferana (Clem.), the jack pine budworm, C. pinus pinus Free., the western spruce budworm, C. occidentalis Free., the 2-year-cycle spruce budworm, C. biennis Free., and the coastal. Laboratory rearing of spruce budworm, Choristoneura fumiferana, in conjunction with field rearing, gravimetric analyses, a transfer experiment, and foliage chemical analyses at six dates during the period of budworm feeding activity indicated that the age of balsam fir, Abies balsamea, trees (year-old mature trees or year-old juvenile trees) affected tree suitability for the spruce.


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Cartographic representation of spruce budworm, Choristoneura fumiferana (Clem.), infestation in eastern Canada, 1909-1966 by C. E. Brown Download PDF EPUB FB2

Choristoneura fumiferana, the eastern spruce budworm, is a species of moth of the family is also commonly referred to as the spruce budworm. It is one of the most destructive native insects in the northern spruce and fir forests of the eastern United States and range is also the widest of all the budworm species.

Eastern spruce budworm populations can experience Family: Tortricidae. Presents a series of maps showing Spruce budworm infestations from to Areas that have been sprayed are indicated.

It is suggested that budworm outbreaks occur over very large areas (up tosq. miles), and that only one complete () and one partial () outbreak have occurred during the DS: Abies balsamea \ insect pests \ Lepidoptera \ Choristoneura Cited by: he spruce budworm, Choristoneura fumiferana (Clemens), is the most destructive and widely distributed forest defoliator in North America.

The destructive phase of this pest is the larval or caterpillar stage. Massive budworm outbreaks occur periodically, destroying hundreds.

The historical pattern of outbreaks of the spruce budworm, Choristoneura fumiferana (Clem.), in white spruce stands in the Fort Nelson Forest District of northeastern British Columbia was reconstructed with the use of dendrochronology.

Outbreaks occurred on an average every 26 years, with 5–6 outbreaks in the past century in the northern regions of the district, while southern regions Cited by: I used the eastern spruce budworm, Choristoneura fumiferana (Lepidoptera: Tortricidae) as a model system for exploring local adaptation and phenotypic plasticity of insect cold-hardiness.

The species is one of the most destructive forest pests in North America, therefore accurately predicting its range and population growth is essential for Author: Skye Butterson. Jacques Régnière, Diapause termination and changes in thermal responses during postdiapause development in larvae of the spruce budworm, Choristoneura fumiferana, Journal of Insect Physiology, /(90)I, 36, 10, (), ().

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. However, recent theoretical and technical. Sarcophaga aldrichi Park.

is a native parasite which has been reared continually, though in small numbers, from Choristoneura fumiferana (Clem.) in British Columbia. It is also an important parasite of Malacosoma disstria Hbn. and is apparently widely distributed throughout North America. The parasite can be reared in the laboratory on pork liver, or on a mixture of liver and fish, from larvae.

The history of spruce budworm (Choristoneurafumiferana (Clem.)) outbreaks for the past to years, for nine regions in eastern Canada, indicates that outbreaks have occurred more frequently in the 20th century than ally, 21 outbreaks took place in the past 80 years compared with 9 in the preceding years.

Earlier infestations were restricted to specific regions, but. Spruce budworm (Choristoneura fumiferana) is the main defoliator of conifer trees in North American boreal forests, affecting extensive areas and causing marked losses of timberspruce budworm affected more than 7 million ha of Eastern Canadian forest.

Defoliation was particularly severe for black spruce (Picea mariana (Mill.)B.S.P.), one of the most important commercial. Genome structure characterization can contribute to a better understanding of processes such as adaptation, speciation, and karyotype evolution, and can provide useful information for refining genome assemblies.

We studied the genome of an important North American boreal forest pest, the spruce budworm, Choristoneura fumiferana, through a combination of molecular cytogenetic. A Synthetic Diet for the Spruce Budworm, Choristoneura fumiferana (Clem.) (Lepidoptera: Tortricidae)1 - Volume 97 Issue 1 - Arlene McMorran Skip to main content Accessibility help We use cookies to distinguish you from other users and.

The frequency of egg parasitism in the spruce budworm, Choristoneura fumiferana (Clem.) (Lepidoptera: Tortricidae) by Trichogramma minutum Riley (Hymenoptera: Trichogrammatidae) was recorded in several host populations during the rising phase of an outbreak in the Gatineau Valley (Quebec, Canada) in and Some of the observed spruce budworm populations were.

Biology of the western spruce budworm, Choristoneura occidentalis, from Douglas-fir, was studied in the Okanogan National Forest in north central Washington. Larval head capsules with the spruce budworm C. fumiferana (Clemens), in New Brunswick balsam fir-spruce type forests (Miller ).

We conducted a 14‐yr intensive study of spruce budworm (Choristoneura fumiferana (Clem.)) survivorship at three study plots in largely balsam fir (Abies balsamea (L.) Mill.) stands in New Brunswick, Canada, to elucidate certain key mechanisms underlying spruce budworm outbreak study covered a peak‐to‐declining phase (from and ) of the budworm outbreak cycle that had.

The eastern spruce budworm (Choristoneura fumiferana) is one of the most destructive forest insect pests in is known about its intestinal microbiota, which could play a role in digestion, immune protection, communication and/or development.

The historical pattern of outbreaks of the spruce budworm, Choristoneura fumiferana (Clem.), in white spruce stands in the Fort Nelson Forest District of northeastern British Columbia was reconstructed with the use of dendrochronology.

Outbreaks. Search: "Spruce budworm" Showing 1 - 20 of for search: '"Spruce budworm"', query time: s Sort Relevance Newest to oldest Oldest to newest Author Title Call Number.

C.E. BrownA cartographic representation of spruce budworm (Choristoneura fumiferana [Clem.]) infestation in eastern Canada, – Can. For. A cartographic representation of spruce budworm (Choristoneura fumiferana (Clem.)) infestations in eastern (). A methodology for estimating canopy disturbance frequency and intensity in dense temperate forests.

(). 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.It is argued that spruce budworm (Choristoneura fumiferana (Clemens)) (SBW) outbreaks have tended to be more frequent, severe, and spatially synchronized since the beginning of the 20th century.

However, few studies have assessed the long-term.physiological changes and cold hardiness of spruce budworm larvae, choristoneura fumiferana (clem.), during pre-diapause and diapause development under laboratory conditions - volume issue 6 - er-ning han, eric bauce.