In a collaborative project, funded by HGCA to look at resistance to pyrethroids in CSFB, scientists at Rothamsted Research have found a mutation (kdr) that is known to confer resistance. A wide range of samples collected at various locations in the UK, mainly from East Anglia and Yorkshire, have been found to be resistant to pyrethroids.
This builds on fundamental work to identify resistance mutations in pest insects that has been ongoing at Rothamsted for many years and is strategically funded by BBSRC. These studies have allowed us to quickly develop a high-throughput DNA-based diagnostic for the mutation in CSFB.
Growers and agronomists who suspect they have CSFB resistant to pyrethroids should send samples to Rothamsted. For further information on sending samples please go to www.hgca.com/neonics
Professor Lin Field, Head of the Biological Chemistry and Crop Protection Department at Rothamsted, in which the work is being done said: "This pyrethroid resistance, coupled with the current restrictions on use of neonicotinoids in oil seed rape, will make control of CSFB a real challenge! Collection of data and evidence as described above is invaluable in order to be able to make informed decisions on the use of pesticides."
Rothamsted Research scientists in collaboration with HGCA call for samples of cabbage stem flea beetle (CSFB) for further analyses.
Caroline Nichols, HGCA
HGCA made a similar announcement 15 September 2014. Further details are available at http://www.hgca.com/press/2014/september/15/widespread-resistance-in-cabbage-stem-flea-beetle-%E2%80%93-hgca-calls-for-more-samples.aspx
Flea Beetle (Psylliodes chrysocephala)
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