3 years ago

Baseline susceptibility of Mediterranean strains of Trialeurodes vaporariorum (Westwood) to cyantraniliprole

Carolina Grávalos, Inmaculada Moreno, Ana Belando, Pablo Bielza
BACKGROUND Cyantraniliprole is a novel anthranilic diamide insecticide that acts on a broad-spectrum of insect pest, exclusively by activating their ryanodine receptors. Cyantraniliprole is very effective against whitefly and it presents a favorable ecotoxicological profile. In this study, the baseline susceptibility to cyantraniliprole of Trialeurodes vaporariorum populations from Mediterranen area was stablished making nymphal systemic uptake bioassays. RESULTS Bioassays data showed that the susceptibility to cyantraniliprole varied among the strains collected across the Mediterranean basin. The LC50 range of cyantraniliprole for sixteen field populations was from 0.017 to 0.194 mg L-1, a 11.4-fold natural variability between the least and most sensitive populations. These LC50 values reported are similar to those reported in previous studies of cyantraniliprol against other species of whitefly Bemisia tabaci (LC50= 0.048 (0.034-0.063) mg L-1). CONCLUSION The current study confirmed the effectiveness of cyantraniliprole against T. vaporarioum strains, becoming a promising tool in IPM programs. Future shifts in susceptibility of whitefly field populations to cyantraniliprole could be documented according to the baseline susceptibility range of the populations tested in this research.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/ps.4869

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