Phytoplasma Diseases and Their Relationships with Insect and Plant Hosts in Canadian Horticultural and Field Crops
- C. Olivier, D. Lowery, L. Stobbs
- BiologyCanadian Entomologist
- 1 October 2009
Because of their cryptic nature, phytoplasmas are difficult to manage; quarantine measures and insecticide sprays remain the most common control measures; however, integrated pest management techniques using beneficial insects, biotechnology, and plant resistance are emerging.
Comparison of bioassay techniques for determining baseline susceptibilities to imidacloprid for green apple aphid (Homoptera: Aphididae).
The results demonstrated that imidacloprid does not have a direct negative effect on the reproductive physiology of this species and contributes to a better understanding of the most suitable techniques for assessing aphid mortality after exposure to these new insecticides.
Laboratory and field evaluation of neem for the control of aphids (Homoptera : Aphididae)
- D. Lowery, M. Isman, N. L. Brard
- Biology
- 1 June 1993
Under field conditions, NSO and NSE treatments were as effective as the botanical insecticide pyrethrum for control of aphids on pepper and strawberry, but ineffective for the control of Aphids on lettuce.
Susceptibilities of Apple Aphid and Spirea Aphid Collected from Apple in the Pacific Northwest to Selected Insecticides
- D. Lowery, M. Smirle, R. Foottit, E. Beers
- Biology, MedicineJournal of Economic Entomology
- 1 August 2006
Differences in LC50 levels of >10-fold suggest insecticide tolerances and the possibility of control failures in the future among aphids of A. pomi and spirea species.
Insect growth regulating effects of neem extract and azadirachtin on aphids
Neem, Azadirachta indica (A. Juss.), seed oil (NSO) applied to leaf discs at a concentration of 1.0% resulted in 94% to 100% mortality of second instar nymphs of currant‐lettuce aphid, Nasonovia…
Incidence, distribution and genetic diversity of Grapevine red blotch virus in British Columbia
- S. Poojari, D. Lowery, M. Rott, A. Schmidt, J. R. Úrbez-Torres
- Biology
- 3 April 2017
A large-scale survey was conducted across all grape-growing regions of BC to determine the incidence and distribution of GRBV, indicating a low incidence of this virus in BC vineyards and highlighting the need for domestic clean plant propagation programmes and development of long-term management strategies to minimizeGRBV spread.
Inhibition of Aphid (Homoptera: Aphididae) Reproduction by Neem Seed Oil and Azadirachtin
Dissections of treated N. ribisnigri indicate that exposure to neem seed oil or azadirachtin results in higher mortality rates for embryos just before parturition, but increased mortality during this stage does not account for the recorded decrease in fecundity.
Influence of Neem Oil on Detoxication Enzyme Activity in the Obliquebanded Leafroller,Choristoneura rosaceana
- M. Smirle, D. Lowery, C. Zurowski
- Biology
- 1 November 1996
It is indicated that neem oil affects esterase activities but not glutathione transferase activities, and that these effects are most pronounced in adult moths that were exposed to neem as larvae, and may be useful in the management of insect populations where insecticide resistance has developed as a result of elevated ester enzyme activity.
Identification, Distribution, and Molecular Characterization of the Apple Aphids Aphis pomi and Aphis spiraecola (Hemiptera: Aphididae: Aphidinae)
- R. Foottit, D. Lowery, H. Maw, M. Smirle, G. Lushai
- BiologyCanadian Entomologist
- 1 October 2009
Morphometric techniques, DNA mitochondrial cytochrome c oxidase subunit 1 gene (COI) barcoding, and microsatellite flanking region sequences were used to assess the reliability of suggested morphological characters in distinguishing the green apple aphid from the spirea aphid, and to assess variation within these species.
Baseline Susceptibilities to Imidacloprid for Green Apple Aphid and Spirea Aphid (Homoptera: Aphididae) Collected from Apple in the Pacific Northwest
- D. Lowery, M. Smirle, R. Foottit, C. Zurowski, E. Peryea
- Biology, MedicineJournal of Economic Entomology
- 1 February 2005
Differences in susceptibility to insecticides between these two anatomically similar species should be considered during the testing of new products for use on apple.
...
...