Cabbage moth update February 2015

At the moment there is no efficient biocontrol product available to control cabbage moth. Telenomus sp. parasitizes efficiently under field conditions, however, hardly anything is known about this potential biocontrol agent. Therefore, the first year of BIOCOMES has been used to collect information about the parasitoid Telenomus sp.

The Research Institute of Organic Agriculture (FiBL) has worked on the characterization of Telenomus sp. population structures. A species specific primer has been developed, because of the small size of this parasitoid (<1mm). This makes it very difficult to identify the species. Therefore the primer has been developed as a tool for species determination. The primer will also be used (2015) for population characterisation, because it is necessary to understand the potential use of Telenomus sp. as a biological control agent at a European scale.

For this part FiBL is working together with BIOCOMES partners Agro Plantarum (Sweden), ARA Testing Facility on Sicily and OpenNatur in Spain.
In 2015 each partner will expose into the field the laboratory reared lepidoptera eggs to collect naturally occurring egg parasitoids. After that the developed primer will be used to identify Telenomus sp. between all the collected egg parasitoids and in addition DNA samples belonging to Telenomus sp. will be used to determine the intraspecific variability between the different European populations.

In the meantime, FiBL experimented different rearing conditions, to improve the production of the parasitoids for large scale production.

Read more about our activities on cabbage moth

On the top picture: Telenomus sp. on cabbage moth eggs

Author

Lucius Tamm
Lucius Tamm
Cabbage moth
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