Our researchers worked alongside colleagues from Government agencies including the Department of Conservation (DOC) and Ministry of Primary Industries (MPI) to eradicate the unwanted invader, great white butterfly (Pieris brassicae).
The butterfly was discovered in Nelson in 2010 and posed a significant threat to other native butterflies and brassica crops. We provided technical advice, modelling and data analysis expertise as well as experience mass rearing a parasitoid wasp biocontrol for release into the Nelson area.
The last sighting of the pest was in December 2014 and DOC discontinued the eradication programme in June 2016.