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The paper reports on the sensitivity monitoring executed by DuPont and collaborators in Italy, Spain, Greece since 2009 in order to detect possible sensitivity shifts of T. absoluta from baseline sensitivity to the diamide insecticide chlorantraniliprole (MoA group 28). The results of the 2014 bioassays revealed the first cases of T. absoluta resistance to diamide insecticides in South-East Sicily. The potential integrated control strategies are discussed, aiming to prevent further directional selection of resistance alleles via the adoption of stringent IPM strategies inclusive of reasoned IRM/MoA alternation programmes.
A total of 93 Myzus persicae populations from stone fruit orchards and other crops in S. Europe were sampled and analysed to determine the resistance status. The results confirm the presence of neonicotinoid-resistant aphids in many of the stone fruit orchards of southern France and North East Spain as well in the Emilia-Romagna region of Italy. The surveys have yet to identify any resistant aphids in other crops. IRAC has worked with local agricultural ministry officials, and entomological experts from Spain, France, Italy and the UK, to provide resistance management advice for the 2012 season. For further information click the following links English, Spanish, Italian or French.