Reported Resistance Case(s)

Species: psylliodes chrysocephala

Order	Family	Common Name(s)	Group	Host
coleoptera	chrysomelidae	cabbage-stem flea beetle	AG

Active Ingredient: cyhalothrin-lambda

MOA: Sodium channel modulators, Pyrethroids, Pyrethrins, DDT
Group: PYR	CAS #: 91465086	Shaugnessy Code: 128897

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G20866	2020	Field Evolved Resistance	United Kingdom-- South East-- Berkshire	Willis, C. E., Foster, S. P., Zimmer, C. T., Elias, L., Chang, X., Field, L. M., Williamson, M. S., and Davies, T. G. M. (2020). Investigating the status of pyrethroid resistance in UK populations of the cabbage stem flea beetle (Psylliodes chrysocephala). Crop Protection, 138.
G20865	2020	Field Evolved Resistance	United Kingdom-- South East-- Surrey	Willis, C. E., Foster, S. P., Zimmer, C. T., Elias, L., Chang, X., Field, L. M., Williamson, M. S., and Davies, T. G. M. (2020). Investigating the status of pyrethroid resistance in UK populations of the cabbage stem flea beetle (Psylliodes chrysocephala). Crop Protection, 138.
G20864	2020	Field Evolved Resistance	United Kingdom-- North West-- Lancashire	Willis, C. E., Foster, S. P., Zimmer, C. T., Elias, L., Chang, X., Field, L. M., Williamson, M. S., and Davies, T. G. M. (2020). Investigating the status of pyrethroid resistance in UK populations of the cabbage stem flea beetle (Psylliodes chrysocephala). Crop Protection, 138.
G20863	2020	Field Evolved Resistance	United Kingdom-- Hertfordshire	Willis, C. E., Foster, S. P., Zimmer, C. T., Elias, L., Chang, X., Field, L. M., Williamson, M. S., and Davies, T. G. M. (2020). Investigating the status of pyrethroid resistance in UK populations of the cabbage stem flea beetle (Psylliodes chrysocephala). Crop Protection, 138.
G20861	2020	Field Evolved Resistance	United Kingdom-- East Midlands-- Nottinghamshire	Willis, C. E., Foster, S. P., Zimmer, C. T., Elias, L., Chang, X., Field, L. M., Williamson, M. S., and Davies, T. G. M. (2020). Investigating the status of pyrethroid resistance in UK populations of the cabbage stem flea beetle (Psylliodes chrysocephala). Crop Protection, 138.
G20862	2020	Field Evolved Resistance	United Kingdom-- East of England-- Essex	Willis, C. E., Foster, S. P., Zimmer, C. T., Elias, L., Chang, X., Field, L. M., Williamson, M. S., and Davies, T. G. M. (2020). Investigating the status of pyrethroid resistance in UK populations of the cabbage stem flea beetle (Psylliodes chrysocephala). Crop Protection, 138.
G19444	2015	Field Evolved Resistance	Germany-- Herts-- Harpenden	Foster, S., and Williamson, M. (2015). Investigating pyrethroid resistance in UK cabbage stem flea beetle populations and developing a PCR-based assay for detecting turnip yellows virus in aphids. Agriculture and Horticulture Development Board.
G19448	2015	Field Evolved Resistance	Germany-- Beds-- Sandy	Foster, S., and Williamson, M. (2015). Investigating pyrethroid resistance in UK cabbage stem flea beetle populations and developing a PCR-based assay for detecting turnip yellows virus in aphids. Agriculture and Horticulture Development Board.
G19447	2015	Field Evolved Resistance	Germany-- Herts-- Harpenden	Foster, S., and Williamson, M. (2015). Investigating pyrethroid resistance in UK cabbage stem flea beetle populations and developing a PCR-based assay for detecting turnip yellows virus in aphids. Agriculture and Horticulture Development Board.
G19446	2015	Field Evolved Resistance	Germany-- Herts-- Harpenden	Foster, S., and Williamson, M. (2015). Investigating pyrethroid resistance in UK cabbage stem flea beetle populations and developing a PCR-based assay for detecting turnip yellows virus in aphids. Agriculture and Horticulture Development Board.
G19445	2015	Field Evolved Resistance	Germany-- Essex-- Ongar	Foster, S., and Williamson, M. (2015). Investigating pyrethroid resistance in UK cabbage stem flea beetle populations and developing a PCR-based assay for detecting turnip yellows virus in aphids. Agriculture and Horticulture Development Board.
G19443	2015	Field Evolved Resistance	Germany-- Herts-- Royston	Foster, S., and Williamson, M. (2015). Investigating pyrethroid resistance in UK cabbage stem flea beetle populations and developing a PCR-based assay for detecting turnip yellows virus in aphids. Agriculture and Horticulture Development Board.
G19442	2015	Field Evolved Resistance	Germany-- Herts-- Harpenden	Foster, S., and Williamson, M. (2015). Investigating pyrethroid resistance in UK cabbage stem flea beetle populations and developing a PCR-based assay for detecting turnip yellows virus in aphids. Agriculture and Horticulture Development Board.
G19441	2015	Field Evolved Resistance	Germany-- Cambs-- Tadlow	Foster, S., and Williamson, M. (2015). Investigating pyrethroid resistance in UK cabbage stem flea beetle populations and developing a PCR-based assay for detecting turnip yellows virus in aphids. Agriculture and Horticulture Development Board.
G19440	2015	Field Evolved Resistance	Germany-- Suffolk-- Barrow	Foster, S., and Williamson, M. (2015). Investigating pyrethroid resistance in UK cabbage stem flea beetle populations and developing a PCR-based assay for detecting turnip yellows virus in aphids. Agriculture and Horticulture Development Board.
G19439	2015	Field Evolved Resistance	Germany-- Cambs-- Great Wilbraham	Foster, S., and Williamson, M. (2015). Investigating pyrethroid resistance in UK cabbage stem flea beetle populations and developing a PCR-based assay for detecting turnip yellows virus in aphids. Agriculture and Horticulture Development Board.
G19438	2015	Field Evolved Resistance	Germany-- Suffolk-- Wickhambrook	Foster, S., and Williamson, M. (2015). Investigating pyrethroid resistance in UK cabbage stem flea beetle populations and developing a PCR-based assay for detecting turnip yellows virus in aphids. Agriculture and Horticulture Development Board.
G19437	2015	Field Evolved Resistance	Germany-- Suffolk-- Ousden	Foster, S., and Williamson, M. (2015). Investigating pyrethroid resistance in UK cabbage stem flea beetle populations and developing a PCR-based assay for detecting turnip yellows virus in aphids. Agriculture and Horticulture Development Board.
G19436	2015	Field Evolved Resistance	Germany-- Cambs-- Great Wilbraham	Foster, S., and Williamson, M. (2015). Investigating pyrethroid resistance in UK cabbage stem flea beetle populations and developing a PCR-based assay for detecting turnip yellows virus in aphids. Agriculture and Horticulture Development Board.
G19435	2015	Field Evolved Resistance	Germany	Hojland, D., Nauen, R., Foster, S., Williamson, M., and Kristensen, M. (2015). Incidence, Spread and Mechanisms of Pyrethroid Resistance in European Populations of the Cabbage Stem Flea Beetle, Psylliodes chrysocephala L. (Coleoptera: Chrysomelidae). PLOS ONE.
G19410	2013	Field Evolved Resistance	Germany	Heimbach, U., and Muller, A. (2013). Incidence of pyrethroid-resistant oilseed rape pests in Germany. Pest Management Science, 69 209-216.

*The population was created solely by selection and/or genetic manipulation.
**The population was selected further in the laboratory after collection.