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Acaricide resistance and resistance mechanisms in Tetranychus urticae populations from rose greenhouses in the Netherlands
Author(s) -
Khajehali Jahangir,
Van Nieuwenhuyse Pieter,
Demaeght Peter,
Tirry Luc,
Van Leeuwen Thomas
Publication year - 2011
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.2191
Subject(s) - tetranychus urticae , acaricide , rose (mathematics) , resistance (ecology) , biology , greenhouse , pesticide resistance , insecticide resistance , abamectin , botany , horticulture , pest analysis , toxicology , pesticide , agronomy
BACKGROUND: Spider mites are important crop pests that rapidly develop resistance to acaricides. To investigate whether acaricide resistance is a threat to greenhouse rose culture in the Netherlands, the susceptibility of 15 strains of Tetranychus urticae was tested to several currently used acaricides, and resistance mechanisms were investigated. RESULTS: Although the observed levels of susceptibility differed between strains and acaricides, resistance was detected in most strains. The activity of detoxifying enzymes was significantly increased in most field‐collected strains, and a number of amino acid substitutions known to be involved in resistance were detected. CONCLUSIONS: Resistance levels to traditional acaricides such as bifenthrin and abamectin were prominent, and might result in control failure under field conditions. Resistance to more recently registered compounds was detected in several populations. Resistance levels were generally unstable in the laboratory without selection pressure. The toxicological, biochemical and genetic data in this study will be essential in devising an efficient resistant management for Dutch rose culture. Copyright © 2011 Society of Chemical Industry