Overrun with Cabbage Stem Flea Beetle larvae? Send CHAP your samples
Inspired by previous work conducted at Rothamsted research, we are currently investigating the efficiency of pyrethroid pesticides on larvae of the Cabbage Stem Flea Beetle (Psylliodes chrysocephala), a major insect pest of members in the Brassica family (including Oilseed rape). This project is being conducted in collaboration with consortium partners at FERA, and asks whether or not larval resistance to pyrethroids is linked to known modifications in the sequence of the gene encoding the protein target of the pesticide, and/or to heightened metabolic processes in the insect that could reduce efficiency of the control agent. Identifying such genetic changes in resistant larvae will help us understand if pyrethroids are effective at managing Cabbage Stem Flea Beetle larvae.
We have so far analysed numerous insect samples that were collected from various regions of England during the 2016/2017 growing season, however, to enable us to better associate particular genetic traits with pyrethroid resistance, we are planning on collecting more samples from across the UK in the upcoming season. We are very keen to talk to growers of Oilseed rape and other brassica plants, to discuss the possibility of being sent samples of stems infected with Cabbage Stem Flea Beetle larvae, or indeed us being able to visit your farm to collect samples.