Plant Protection Science (2017) 53, 108-117

Marek Seidenglanz, Jana Poslusná, Pavel Kolarík, Jirí Rotrekl, Eva Hrudová, Pavel Tóth, Jirí Havel, Eva Plachká, Ján Táncik and Kamil Hudec (2017)
Negative correlations between the susceptibilities of Czech and Slovak pollen beetle populations to lambda-cyhalothrin and chlorpyrifos-ethyl in 2014 and 2015
Plant Protection Science 53 (2), 108-117
Abstract: Sixty-five Czech Meligethes populations were tested against lambda-cyhalothrin and chlorpyrifos-ethyl in 2014. In 2015, totally sixty Meligethes populations, some of which sampled also in Slovakia, were tested against the two insecticides. Adult vial tests by IRAC (Insecticide Resistance Action Committee) were used for testing (No. 011 v. 3 for lambda-cyhalothrin and No. 025 for chlorpyrifos-ethyl). For each of the tested populations the LC₅₀, LC₉₀, and in 2015 also LC₉₅ values were determined for both these insecticides. Correlation analyses were made with transformed (log10 transformation) LC values. No significant correlation was recorded between the LC₅₀ values. Contrary to that, significant (P < 0.05) negative (r values for negative) correlations were recorded between the LC₉₀ and LC₉₅ values. Pyrethroid resistance in pollen beetle populations should indicate their slightly higher susceptibility to chlorpyrifos-ethyl.
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Database assignments for author(s): Marek Seidenglanz, Kamil Hudec

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.
	Brassicogethes aeneus		Czech Republic