Store-bought strawberries may also be affected, particularly if they are sourced from areas with known SWD populations. However, many commercial growers implement rigorous pest management strategies to minimize the impact of SWD and deliver clean, healthy fruit to consumers.
The Science Behind Infestation: When and How Flies Lay Their Eggs
The SWD is known for its ability to lay eggs in ripening fruit rather than overripe or damaged fruit, which is typical of other fruitflies. Female SWD flies use their specialized ovipositors to puncture the skin of the fruit and deposit eggs just beneath the surface.
Ripe strawberries still attached to stems in a garden bed
Ripe strawberries still attached to stems in a garden bed
The oviposition process can occur rapidly, with a single female capable of laying hundreds of eggs over her lifespan. This prolific reproductive capacity, combined with a short life cycle—eggs can hatch within a few days—means that SWD populations can grow quickly, particularly in warm, humid conditions.
