Journal
JOURNAL OF INVERTEBRATE PATHOLOGY
Volume 105, Issue 2, Pages 204-206Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jip.2010.06.009
Keywords
Cabbage loopers; Bacillus thuringiensis; AcMNPV; Fitness cost; Cross-resistance; Microbial control; Resistance management
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Funding
- NSERC Biological Control Network
- NSERC Discovery Grant Program
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Cabbage loopers, Trichoplusia ni, are pests in many agricultural settings including vegetable greenhouses in British Columbia (Canada), where microbial insecticides based on Bacillus thuringiensis (Bt) toxins are commonly used. Frequent use of these insecticides has led to resistance in some populations. An alternative microbial control is the multiple nucleopolyhedrovirus of the alfalfa looper (Autographa californica), AcMNPV which occurs naturally, but at low frequencies in T. ni populations. Bioassays show that T. ni resistant to Bt were twice as susceptible to AcMNPV as were individuals from the Bt-susceptible strain and AcMNPV could be complementary in a resistance management program for T. ni. (C) 2010 Elsevier Inc. All rights reserved.
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