Current status of resistance in pollen beetle (Meligethes aeneus F.) to selected active substances of insecticides in Poland

Abstract

Chemical plant protection is still an indispensable method in effective oilseed rape protection against the pollen beetle (Meligethes aeneus F.) in Poland. This species is able to develop strong resistance against active substances used in synthetic insecticides. The phenomenon of pollen beetle resistance is currently found in many European countries. Therefore the objective of the study was to determine the present susceptibility level of Polish populations of pollen beetle to the main groups of insecticides recommended in Poland for pollen beetle control. The research showed high resistance of most tested Polish pollen beetle populations to many active substances of all chemical groups of insecticides applied in Poland.

Baseline susceptibility and insecticide resistance monitoring in European populations of Meligethes aeneus and Ceutorhynchus assimilis collected in winter oilseed rape

“…After the ban of organophosphates, the major insecticide class for pollen beetle and weevil control until 2006 was the pyrethroids (Nauen, 2005;M€ uller et al, 2008;Heimbach & M€ uller, 2013). Selection pressure by pyrethroids on pollen beetle populations was enormous, so that widespread resistance to this chemical class of insecticides nowadays is a major problem (Ekbom & Kudsk, 2001;Hansen, 2003Hansen, , 2008Nauen, 2005Nauen, , 2007Richardson, 2008b;Wegorek & Zamoyska, 2008). Large-scale pyrethroid resistance monitoring campaigns in pollen beetle in as many as 20 countries between 2007 and 2011 revealed high resistance to pyrethroids resulting in limited control and field failure (Slater et al, 2011;Zimmer & Nauen, 2011a), whereas resistance in weevils such as cabbage seed weevil is still either absent or limited to just a few regions in Germany (M€ uller et al, 2008;Heimbach & M€ uller, 2013).…”

Pyrethroid resistance monitoring in European populations of pollen beetle (Meligethes spp.): a coordinated approach through the Insecticide Resistance Action Committee (IRAC)

“…However, the first cases of resistance to pyrethroids were recorded during 1999 in north‐eastern France,6, 7 but pyrethroid‐resistant beetles may have been present in significant numbers as early as 1997 1. Subsequently they have been located in many of the oilseed‐rape‐growing parts of Europe by many researchers using a variety of methods to measure pyrethroid susceptibility 8, 9…”

Species of the genus Meligethes occurring in oil-seed crop fields in the Czech Republic

“…In the Czech Republic M. aeneus causes significant losses in rapeseed crops every year and together with Ceutorhynchus napi Gyllenhal, 1837, Ceutorhynchus pallidactylus (Marsham, 1802), and Dasineura brassicae (Winertz, 1853) is usually controlled by insecticides (Kazda 2007). The importance of M. aeneus for oil seed rape in the Czech Republic is quite similar as it is in Germany (Glattkowski et al 2008) and Poland (Wegorek & Zamojska 2008). Not only one but usually more species of the genus Meligethes have occurred in winter oilseed rape crops (Thieme et al 2008).…”