The spotted wing drosophila (Drosophila suzukii) is a fruit fly which originated in Japan and has spread across the world, first to the USA, then mainland Europe, before first being detected in the United Kingdom in 2012 at NIAB EMR in Kent.
It is an invasive pest of soft and stone fruit crops and if left uncontrolled, can result in complete crop loss. Unlike the common fruit fly found in the UK (Drosophila melanogaster) which is only attracted to ripe and overripe fruits, the spotted wing drosophila (SWD) is attracted to underripe fruits and therefore finds its way into fruit crops both before and during the harvesting period.
Armed with the knowledge that SWD was spreading to new countries in mainland Europe, AHDB developed an SWD Industry Working Group to alert the industry to the threat of the pest and how to monitor for it. As soon as it arrived in the UK, the Working Group initiated an industry-funded research project SF 145. This ran from 2013 until 2017 and aimed to improve our understanding of how it was spreading in UK climatic conditions, how best to monitor and sample for its presence, how to dispose of affected fruits and how to manage and control it.
SWD remains a key priority for AHDB-funded research to support the soft fruit and tree fruit industry.
This section of the website collates the most current information available on spotted wing drosophila. These dedicated SWD pages have been set up to provide the latest results of industry funded projects along with other knowledge, best practice and understanding of SWD from around the world.
A factsheet offering growers guidance on SWD has been published by AHDB. It collates all current best practice knowledge with the latest results generated from research SF 145 which concluded in March 2017.
You can download the factsheet by clicking here.
A wealth of other resources, including videos, factsheets and posters, designed to help growers manage the pest are also available.
Spotted Wing Drosophila: A guide (click on the headings below)