Population dynamics of Drosophila suzukii across elevations in Wenchuan, China.
Cao Z, Wang H, Gregory IO, Wei B, Liu Y
Invasive Species
Cherry, raspberry, or blueberry growers: that ornamental honeysuckle or wild sour cherry growing at the edge of your planting may be quietly feeding a fruit fly population weeks before your harvest is at risk.
Spotted wing drosophila is a tiny invasive fruit fly that lays eggs inside ripe soft fruits, ruining them from the inside. Scientists tracked this pest across mountain cherry orchards at different altitudes and found a counterintuitive pattern: cooler, higher orchards actually face faster and more severe infestations once the pest shows up, even though it arrives later in the season. They also found that certain wild shrubs and trees nearby — especially an early-ripening honeysuckle — act as population launching pads before cherries are ready, and having them close can push pest damage a week or more earlier than growers expect.
Key Findings
High-elevation orchards (1910 m) hit the 40% fruit infestation threshold when fruit was 45.9% less mature than at low-elevation sites (1360 m), meaning infestation progresses far faster relative to ripeness despite cooler temperatures and delayed pest arrival.
Eleven wild non-crop plant species supported spotted wing drosophila reproduction before sweet cherry ripened; early-flowering Standish's honeysuckle was the critical population reservoir at high elevations.
Interplanting sweet cherry orchards with Chinese sour cherry advanced the pest's seasonal arrival and onset of fruit damage by 5–10 days.
chevron_right Technical Summary
A two-year study in mountain cherry orchards in China found that while the invasive spotted wing drosophila arrives later at higher elevations, it infests fruit dramatically faster once it does — making high-altitude orchards more vulnerable than their cooler climate would suggest. Wild shrubs growing nearby act as seasonal pest reservoirs that can accelerate damage by up to ten days.
Abstract Preview
Drosophila suzukii is a devastating global pest of soft-skinned fruits, yet its population dynamics in mountainous agricultural systems where cultivation extends across elevational gradients remain...
open_in_new Read full abstractAbstract copyright held by the original publisher.
Species Mentioned
Was this useful?
Want to tell us more? (optional)
Thanks for the note!
Something went wrong — please try again.
Too many submissions. Try again in an hour.
Chloroplast Genome Editing Eliminates Gluten Immunogenicity in Triticum aestivum
It could mean that people with celiac disease — roughly 1 in 100 worldwide — may one day safely eat bread made from real wheat, without sacrificing the taste...
Prunus avium, commonly called wild cherry, sweet cherry or gean, is a species of cherry, a flowering plant in the rose family, Rosaceae. It is native to western Eurasia and naturalized elsewhere. It is an ancestor of P. cerasus.