(Incorporating the OSR & Pollen Beetle Groups)
Pyrethroid resistance has been recorded in European populations of the pollen beetle (Meligethes aeneus) since 1999, when it was first reported in Eastern France. Pyrethroid insecticides have long been favoured as the method of control for insect pests of oilseed rape and a lack of alternative insecticides with different modes of action, has ensured a continued high selection pressure for pyrethroid resistance.
This has lead to the spread of resistant pollen beetle across much of the oilseed rape growing regions of Europe. In 2007 an IRAC Pollen Beetle Team was established to bring together expertise from agrochemical companies and independent researchers in order to monitor the development of insecticide resistance in oilseed rape pests and to provide guidance and advice on the best practices to prevent further insecticide resistance development. In 2010 the team adopted a wider role looking at resistance issues in oilseed rape and as a result changed their team name to the Oilseed Rape WG.
The Coleoptera WG was formed in 2011 initially made up from the previous Pollen Beetle WG and the Oilseed Rape WG. The team has been responsible for coordinating the collection and analysis of resistance monitoring data from Europe and for developing an agreed European IRM strategy for the chemical control of pollen beetles and other pests of Oilseed Rape. The new Coleoptera WG has an expanded remit and the team membership is gradually reflecting the new global focus of the team.
Published paper with IRAC pollen beetle monitoring results:
Slater R. et al, Pyrethroid resistance monitoring in European populations of pollen beetle (Meligethes spp.): a coordinated approach through the Insecticide Resistance Action Committee (IRAC). Pest Manag Sci. 2011 Jun;67(6):633-8.
- To expand the remit of the team to include prioritised activties against a wider range of coleoptera pests.
- To provide researchers, validated methods for measuring the susceptibility of coleopteran pests.
- To provide summarised information to growers and influencers on available control options and strategies for controlling key coleoptera pests (posters, leaflets, etc).
- To co-ordinate oilseed rape coleoptera sensitivity monitoring in European oilseed rape crops, using validated methodologies.
- To provide oilseed rape pest sensitivity information to growers and regulators, so that informed decisions on oilseed rape pest control and resistance managment can be made.
The application of an insecticide to the soil, either as a seed treatment or as a direct application, is designed to either control soil borne insect pests or provide systemic control of pests above the ground. The general principles of resistance management apply to seed and soil treatments, as with foliar applied insecticides, however there are some additional factors that should be considered as outlined the the latest statement from IRAC titled: IRAC International statement on the resistance management considerations of utilizing soil & seed applied insecticides