The effects of non‐crop habitat on spotted wing drosophila (Drosophila suzukii) abundance in fruit systems: A meta‐analysis

Abstract

1. Drosophila suzukii (SWD) poses a threat to soft and stone fruit globally. SWD inhabits non-crop areas adjacent to farms from where it moves into crops to cause damage. Effective IPM control strategies, considering both the crop and non-crop area, are needed to control this economically important pest.2. We conducted a meta-analysis to quantify the impacts of different non-crop habitats around fruit farms on SWD populations, comparing abundance of SWD trapped in crop and non-crop habitats.3. Overall, SWD abundance was greater in non-crop habitats than in cropped areas and this difference was greatest in farms adjacent to woodland, or field margins containing known SWD host plants.4. The difference in SWD abundance between crop and non-crop habitats was not affected by crop type but was greatest in the winter months and in conventional compared to organic farms, indicating conventional approaches can reduce relative SWD abundance. 5. Drosophila suzukii overwinter in non-crop habitats which provide refuge outside the cropping season. However, certain habitats support greater relative abundance of SWD than others and this is also affected by farm management. We discuss what these findings mean for effective control of SWD.

Field evaluation of glutathione and glutamic acid as host marking pheromones for control of Tephritid fruit flies in a mango orchard in Kenya

“…Salazar-Mendoza et al, 37 trapped C. capitata, various Anastrepha species and their parasitoids at this elevation while species richness changed inversely with the elevation. Similar findings were reported by Odanga and co-wokers 30 who showed 38 that elevations greater than 1500 m ASL negatively affected fruit fly richness and diversity.…”

“…[26][27][28] Indeed, fruit flies, such as C. capitata and Anastrepha spp., known to thrive in coffee fruits, migrate to other host fruits like avocado, grape, loquat, stone fruits, and oranges during the off-season. 29 Moreover, the spotted wing drosophila Drosophila suzukii has been detected in non-crop habitats such as woodlands that are adjacent to fruit farms during the fruit off-season, 30 suggesting that these habitats may provide alternate hosts for the survival of the pest. Hence, we believe that for effective management of fruit flies, HMPs and other IPM tools should be deployed both in fruit and neighboring non-fruit farms.…”

Feriez-vous du mal à une mouche ? Une introduction à Drosophila suzukii et aux méthodes alternatives pour contrôler cette espèce invasive.

“…Indeed, wild berries at the margins of fields are oviposition sites for D. suzukii, promoting its dispersal during the ripening period. In addition, forests also contain non-cultivated hosts that provide overwintering habitat for adult D. suzukii (Buck et al, 2022;Rossi-Stacconi et al, 2016;Shearer et al, 2016;Stockton et al, 2019).…”

Selección Masal de Pupas de Mayor Talla de Drosophila melanogaster1 Para Reproducir al Parasitoide Trichopria drosophilae2

“…Sus métodos de control (insecticidas y prácticas culturales) requieren una gran inversión en capital y mano de obra (Mazzi et al 2017, DiGiacomo et al 2019), y su presencia en las parcelas agrícolas puede ocasionar pérdidas de hasta 27 y 25% en cultivos convencionales y áreas orgánicas (DiGiacomo et al 2019). Los métodos para su control tienen la desventaja de que no son sustentables, porque no son aplicados en las áreas agrícolas circundantes, y estas áreas, año tras año, son una fuente constante y abundante de reinfestación hacia las áreas agrícolas (Buck et al 2023).…”