Resistance developments in Estonia’s population of pollen beetles (Brassicogethes aeneus)

Agricultural and Food Science

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Title Resistance developments in Estonia’s population of pollen beetles (Brassicogethes aeneus)
Creator Kann, Liina
Koppel, Mati
Kaart, Tanel
Islamov, Bulat
Sooväli, Pille
Mäe, Andres
Subject Brassicogethes aeneus, oilseed rape, pyrethroid resistance, neonicotinoid resistance, organophosphates resistance, susceptibility monitoring
Description A total of 111 local pollen beetle populations were collected from both winter and spring oilseed rape fields, in the main oilseed growing regions of Estonia between 2015−2019. The objective was to analyse the insecticide-susceptibility of the pollen beetle population (in the form of Brassicogethes aeneus). The pollen beetle samples were tested for sensitivity to lambda-cyhalothrin, thiacloprid, and chlorpyrifos. The efficacy of the tested insecticides varied considerably by region. We observed a clear decrease in susceptibility to lambda-cyhalothrin and thiacloprid, but sensitivity to chlorpyrifos remained stable throughout the period between 2015 and 2019. Amongst the tested samples in that period, a total of 3% were classified as susceptible to lambda-cyhalothrin, 18% as moderately resistant, 70% as resistant, and 7% as highly resistant. In the case of thiacloprid, 21% of the samples were highly susceptible to the insecticide, 39% were susceptible, and 41% had reduced levels of susceptibility to the insecticide. The information which was presented tended to confirm the ongoing evolution of insecticide resistance in the B. aeneus population in Estonia, while also highlighting the importance of data-based decisions when optimising insecticide resistance management in the field.
Publisher The Scientific Agricultural Society of Finland
Date 2021-12-31
Type info:eu-repo/semantics/article
Peer-reviewed Article
Format application/pdf
Source Agricultural and Food Science; Vol 30 Nro 4 (2021); 166–176
Agricultural and Food Science; Vol. 30 No. 4 (2021); 166–176
Language eng
Rights Copyright (c) 2021 Liina Kann, Mati Koppel, Tanel Kaart, Bulat Islamov, Pille Sooväli, Andres Mäe

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