Journal of Economic Entomology (1995) 88, 763-767

A. De Cock, I. Ishaaya, M. van de Veire and D. Degheele (1995)
Response of buprofezin-susceptible and -resistant strains of Trialeurodes vaporariorum (Homoptera: Aleyrodidae) to pyriproxyfen and diafenthiuron
Journal of Economic Entomology 88 (4), 763-767
Abstract: A susceptible laboratory strain (S) and a field-collected buprofezin-resistant strain (R) of the greenhouse whitefly, Trialeurodes vaporariorum (Westwood), were examined for their susceptibility to diafenthiuron and pyriproxyfen. Based on LC₅₀ values for cumulative mortality, larvae of the R strain were >300-fold more resistant to buprofezin than larvae of the S strain. Exposure of adults of the S strain to tomato seedlings treated with 30.9 mg (AI) diafenthiuron/liter resulted in 90% mortality. The same level of response could be obtained with 63.4 mg (AI) diafenthiuron/liter with first instars. The LC₉₀ value for cumulative larval mortality until pupation with diafenthiuron was 50.4 mg (AI)/liter. For pyriproxyfen, the LC₉₀ values of the S strain for egg viability, first instar, and cumulative mortality were 0.038, 0.089, and 0.14 mg (AI)/liter, respectively. No significant cross-resistance between diafenthiuron and buprofezin was observed.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Marc Van de Veire, Isaac Ishaaya

Research topic(s) for pests/diseases/weeds:
pesticide resistance of pest

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Trialeurodes vaporariorum	Tomato (Solanum lycopersicum)