Pollen Beetle
Meligethes aeneus
M. aenus is an important pest of oilseed rape particularly in Western Europe. The larvae are up to 3 mm long and white with brown sclerotised plates. Eggs are laid in the flower buds of the…
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M. aenus is an important pest of oilseed rape particularly in Western Europe. The larvae are up to 3 mm long and white with brown sclerotised plates. Eggs are laid in the flower buds of the host-plant and the larvae develop within the flowers. Oviposition damage to the buds of oilseed rape can cause the flowers to drop off. Both adults and larvae feed on the pollen and nectar in the flowers.
Resistance to pyrethroids has been reported in this species since 1999. Initial reports suggest that pyrethroid resistance first occurred in North East France and over the following years has spread to other countries in Europe. Investigations into the mechanism of resistance has primarily identified enhanced metabolism by P450 monooxygenases as the prime mechanism of resistance to pyrethroids. More recently a target site mutation has also been identified in some resistant populations from Denmark and Sweden.
Resistance status
| Insecticide group | Region | Suspected mechanism |
|---|---|---|
| Pyrethroids-PyrethrinsMoA 3AMeligethes aenus | Northern & Central Europe | P450 Metabolic |
| Pyrethroids-PyrethrinsMoA 3AMeligethes aenus | Denmark & Sweden | kdr |
Resistance to pyrethroids has been reported in this species since 1999. Initial reports suggest that pyrethroid resistance first occurred in North East France and over the following years has spread to other countries in Europe. Investigations…
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Resistance to pyrethroids has been reported in this species since 1999. Initial reports suggest that pyrethroid resistance first occurred in North East France and over the following years has spread to other countries in Europe. Investigations into the mechanism of resistance has primarily identified enhanced metabolism by P450 monooxygenases as the prime mechanism of resistance to pyrethroids. More recently a target site mutation has also been identified in some resistant populations from Denmark and Sweden.
Key resources
Key references
| Reference | Year | Authors | Publisher |
|---|---|---|---|
| Pyrethroid resistance and thiacloprid baseline susceptibility of European populations of Meligethes aeneus (Coleoptera: Nitidulidae) collected in winter oilseed rape;67(5):599-608. doi: 10.1002/ps.2137 | 2011 | Zimmer CT, Nauen R | Pest Management Science |
| Pyrethroid resistance monitoring in European populations of pollen beetle (Meligethes spp.): a coordinated approach through the Insecticide Resistance Action Committee (IRAC)67(6):633-8. doi: 10.1002/ps.2101 | 2011 | Slater R, Ellis S, Genay JP, Heimbach U, Huart G, Sarazin M, Longhurst C, Müller A, Nauen R, Rison JL, Robin F | Pest Management Science |
| Characterising metabolic resistance in pyrethroid-insensitive pollen beetle (Meligethes aeneus F.) from Poland and SwitzerlandVol. 67, Issue 2, Pg. 239-243, DOI: 10.1002/ps.2061 | 2010 | Philippou D, Field LM, Węgorek P, Zamoyska J, Andrews MC, Slater R, Moores GD | Pest Management Science |