Field survey of ryanodine receptor mutations (G4946E and I4790K) and their effects on biotic performance in the diamondback moth

This study examined changes in the proportions of ryanodine receptor mutations (G4946E and I4790K) for Plutella xylostella populations in the field. Results show that the proportion of G4946E decreased during the survey years without diamide application and that insects with I4790K were observed les...

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Bibliographic Details
Published in:Journal of Pesticide Science 2020/05/20, Vol.45(2), pp.114-118
Main Authors: Fukada, Megumi, Itagaki, Yuki, Nagayoshi, Atsuko, Sonoda, Shoji
Format: Article
Language:English
Subjects:
cyantraniliprole
diamide
Fecundity
fitness cost
Hatchability
insecticide resistance
Insects
Larval development
Mutation
Pest resistance
Plutella xylostella
Polls & surveys
Receptors
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Summary:This study examined changes in the proportions of ryanodine receptor mutations (G4946E and I4790K) for Plutella xylostella populations in the field. Results show that the proportion of G4946E decreased during the survey years without diamide application and that insects with I4790K were observed less frequently during the survey period. This study also examined the biotic performances of diamide-resistant P. xylostella strains. The results show that the diamide-resistant strains exhibited hatchability, larval development, and fecundity equivalent to those of diamide-susceptible strains.
ISSN:1348-589X
1349-0923
DOI:10.1584/jpestics.D20-011