The NIAB's recent investigations into Drosophila spotted-wing (SWD) - the invasive fly that has revolutionised the fruit industry - are explained by Dr Michelle Fountain. This small fly has a unique behaviour, preferring to lay its eggs in unripe fruit, leading to considerable crop losses, up to 90%.
The initial invasion of SWD in the UK triggered an educational effort among fruit growers, but early control attempts relied mainly on insecticides, disrupting established biological methods. New research by the NIAB, however, offers innovative perspectives. SWD was found not to be competitive with other species that lay their eggs in softer fruit, opening the way for potential future controls.
In Europe, the introduction of commercial parasitoids is one solution, but in the UK, NIAB has focused research on analysing the contribution of native parasitoids, which are often restricted in crops due to pesticide use. One interesting approach involves trapping SWD in surrounding areas during autumn and winter, taking advantage of the fly's period of activity.
The collaboration with BigSis demonstrates a promising approach, using X-rays to sterilise flies. Projects with Russell IPM and Microbiotech are developing strategies that combine reduced doses of insecticides with attractive baits, significantly reducing pesticide use and environmental impact.
Despite the challenges, research and innovation are shaping the future of SWD control in the UK fruit industry. Diversification of control strategies, including automation, is becoming crucial to address changes in pest conditions and populations.
Read the full article: Hortidaily
Image: Hortidaily
06 Dec 2024
China and other Asian markets have the capacity to absorb the increase in volumes of Chilean cherries, says Danny Guo, GM of JWM Asia. However, he cites quality control, channel diversification, and targeted marketing as key factors for success.
04 Sep 2024
As part of the Cherry Day, which took place on August 28 and 29 in Plottier (Neuquén), Chilean specialists demonstrated knowledge and experience related to the global cherry business.
13 May 2026
A Serbian study on eight sweet cherry genotypes shows how temperature, pollen germination and pollen tube growth affect fertility and fruit set. ‘Lapins’, ‘Canetova’ and ‘G-2’ stand out as more stable, resilient cultivars under changing climate trends in orchards.
13 May 2026
Chile’s cherry industry is facing increasing financial pressure after seasons marked by oversupply, lower returns and strong reliance on China. Legal, contractual and corporate risks are now growing across the export chain, affecting growers, exporters and trade stability.
