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Susceptibility of immature and adult stages of Trialeurodes vaporariorum (Hom., Aleyrodidae) to selected insecticides
Author(s) -
Wang K.Y.,
Kong X.B.,
Jiang X.Y.,
Yi M.Q.,
Liu T.X.
Publication year - 2003
Publication title -
journal of applied entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.795
H-Index - 60
eISSN - 1439-0418
pISSN - 0931-2048
DOI - 10.1111/j.1439-0418.2003.00778.x
Subject(s) - trialeurodes , abamectin , biology , imidacloprid , greenhouse whitefly , nymph , acetamiprid , toxicology , instar , whitefly , larva , homoptera , pesticide , horticulture , botany , agronomy , pest analysis
Susceptibility of eggs, nymphs and adults of the greenhouse whitefly, Trialeurodes vaporariorum (Westwood) (Hom., Aleyrodidae), to six insecticides, abamectin, buprofezin, imidacloprid, acetamiprid, fenpropathrin and profenofos, was determined in the laboratory. All insecticides were most toxic to the 6‐day‐old eggs and the first instar nymphs, and decreased with successive stages. Of the three ages of the eggs, all insecticides were significantly more toxic to the older eggs (6‐day old) than to the young (2‐day old) and mid‐aged eggs (4‐day old). Abamectin was most toxic to eggs and nymphs, followed by imidacloprid, acetamiprid, buprofezin, fenpropathrin, and profenofos. Susceptibilities of the three stages of the fourth instar nymphs to the six insecticides varied greatly, and the first stage (17‐day old) was most susceptible, followed by the second stage (20‐day old), and the third stage (21‐day old). Imidacloprid was the most toxic insecticide to T. vaporariorum adults, followed by acetamiprid, buprofezin, abamectin, fenpropathrin and profenofos. The results from this study can not only serve as baselines for resistance monitoring programmes, but also have significant implications for development T. vaporariorum management programmes, including accurate timing of the applications of insecticides that target the most susceptible late egg and early nymphal stages.