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Fluctuations in density of an outbreak species drive diversity cascades in food webs
- E. Eveleigh, K. McCann, L. Faria
- Environmental ScienceProceedings of the National Academy of Sciences
- 23 October 2007
It is shown that a complex web of interactions between insect herbivores and their natural enemies displays significant architectural flexibility over a large fluctuation in the natural abundance of the major herbivore, the spruce budworm, and it is found that this food-web flexibility tends to be greater in heterogeneous than in homogeneous forest plots.
Sequence and Organization of the Neodiprion lecontei Nucleopolyhedrovirus Genome
- H. Lauzon, C. Lucarotti, P. Krell, Q. Feng, A. Retnakaran, B. Arif
- BiologyJournal of Virology
- 1 July 2004
Gene parity plots showed limited colinearity of NeleNPV with other baculoviruses, and phylogenetic analysis indicates that Nele NPV may have existed before the lepidopteran nucleopolyhedrovirus and granulovirus divergence.
A brief review of the past use of baculoviruses for the management of eruptive forest defoliators and recent developments on a sawfly virus in Canada
An overview of the state of knowledge on the use of baculoviruses for the suppression of insect outbreaks in Canadian forests is presented, with emphasis on recent investigations using NeabNPV against the balsam fir sawfly and the pine false webworm.
Cytology of Leidyana canadensis (apicomplexa: eugregarinida) in Lambdina fiscellaria fiscellaria larvae (lepidoptera: geometridae).
- C. Lucarotti
- BiologyJournal of invertebrate pathology
- 1 February 2000
The eugregarine Leidyana canadensis infects the larval gut of the eastern hemlock looper, Lambdina fis cellaria fiscellaria, andTrophozoites emerge from the oocysts, pass through the peritrophic membrane into the ectoperitrophic space, and attach to the epithelium of the midgut by means of an apical epimerite.
Occurrence and effects of Nosema fumiferanae infections on adult spruce budworm caught above and within the forest canopy
- E. Eveleigh, C. Lucarotti, P. C. McCarthy, B. Morin, T. Royama, Anthony W. Thomas
- Environmental Science
- 1 November 2007
In populations of both sexes of spruce budworm Choristoneura fumiferana moths, collected live above the forest canopy, within the tree crown, and in drop trays (dead moths), were examined over a 5‐year period in New Brunswick, Canada.
Aerial application of nucleopolyhedrovirus induces decline in increasing and peaking populations of Neodiprion abietis
Incidence and impact of Entomophaga aulicae (Zygomycetes: Entomophthorales) and a nucleopolyhedrovirus in an outbreak of the whitemarked tussock moth (Lepidoptera: Lymantriidae)
Although cohort mortality due to disease on balsam fir was significantly correlated with between-generation reduction in mean egg-mass density, overall pathogen-induced mortality was not high enough to drive the populations into an endemic state, and a moderate infestation persisted into 2000.
Identification and sequence analyses of the granulin gene of Choristoneura fumiferana granulovirus
The secondary structure of CfGV granulin protein, including the hydrophilic (polar) and hydrophobic (basic) regions, was predicted and found to be similar to other granulins.
Comparative Genome Sequence Analysis of Choristoneura occidentalis Freeman and C. rosaceana Harris (Lepidoptera: Tortricidae) Alphabaculoviruses
Based on levels of sequence identity and phylogenetic analysis, both ChocNPV and ChroNPV fall within group I alphabaculovirus, where Choc NPV appears to be more closely related to CfMNPV than does Chro NPV.
Histology of the Larval Neodiprion abietis (Hymenoptera: Diprionidae) Digestive Tract
The alimentary canal of Neodiprion abietis larvae is a straight tube divided into foregut, midgut; the hindgut consists of the pylorus, a muscular ileum connecting to a bulbous rectum, which then opens to the anus.