Baseline susceptibilities of B- and Q-biotype Bemisia tabaci to anthranilic diamides in Arizona

• Published in: Pest management science Vol. 68; no. 1; pp. 83 - 91
• Main Authors: Li, Xianchun, Degain, Benjamin A, Harpold, Virginia S, Marçon, Paula G, Nichols, Robert L, Fournier, Alfred J., Naranjo, Steven E, Palumbo, John C, Ellsworth, Peter C
• Format: Journal Article
• Language: English
• Published: Chichester, UK John Wiley & Sons, Ltd 01-01-2012; Wiley; Wiley Subscription Services, Inc
• Subjects: Animal populations; Animals; Arizona; baseline susceptibility; Bemisia tabaci; Biological and medical sciences; Biological Assay; biotype; chlorantraniliprole; Control; cyantraniliprole; Diamide - pharmacology; Female; Fundamental and applied biological sciences. Psychology; Hemiptera - classification; Hemiptera - drug effects; Insecticide Resistance; Insecticides; Insecticides - pharmacology; Insects; Male; ortho-Aminobenzoates - pharmacology; Pest control; Phytopathology. Animal pests. Plant and forest protection; Protozoa. Invertebrates; resistance management; Resistance to control; United States; North America; Arizona; America; cyantraniliprole; Insecticide; Insecta; Pesticides; baseline susceptibility; Resistance; Pest; Homoptera; chlorantraniliprole; Arthropoda; Bemisia tabaci; resistance management; Pyrazole derivatives; Biotype; Carboxamide; Anthranilic acid derivatives; Aleyrodidae; Invertebrata
• ISSN: 1526-498X; 1526-4998
• DOI: 10.1002/ps.2227

BACKGROUND: Development of pyriproxyfen and neonicotinoid resistance in the B‐biotype whitefly and recent introduction of the Q biotype have the potential to threaten current whitefly management programs in Arizona. The possibility of integrating the novel anthranilic diamides chlorantraniliprole and cyantraniliprole into the current program to tackle these threats largely depends on whether these compounds have cross‐resistance with pyriproxyfen and neonicotinoids in whiteflies. To address this question, the authors bioassayed a susceptible B‐biotype strain, a pyriproxyfen‐resistant B‐biotype strain, four multiply resistant Q‐biotype strains and 16 B‐biotype field populations from Arizona with a systemic uptake bioassay developed in the present study.
RESULTS: The magnitude of variations in LC50 and LC99 among the B‐biotype populations or the Q‐biotype strains was less than fivefold and tenfold, respectively, for both chlorantraniliprole and cyantraniliprole. The Q‐biotype strains were relatively more tolerant than the B‐biotype populations. No correlations were observed between the LC50 (or LC99) values of the two diamides against the B‐ and Q‐biotype populations tested and their survival rates at a discriminating dose of pyriproxyfen or imidacloprid.
CONCLUSION: These results indicate the absence of cross‐resistance between the two anthranilic diamides and the currently used neonicotinoids and pyriproxyfen. Future variation in susceptibility of field populations to chlorantraniliprole and cyantraniliprole could be documented according to the baseline susceptibility range of the populations tested in this study. Copyright © 2011 Society of Chemical Industry