SWD protein in fruit - Ask Extension
My raspberries are loaded with delicious SWD larvae. I know that larvae in general are high in protein and other nutrients, and safe for human consump...
Knowledgebase
SWD protein in fruit #937493
Asked July 01, 2026, 1:01 PM EDT
My raspberries are loaded with delicious SWD larvae. I know that larvae in general are high in protein and other nutrients, and safe for human consumption. Does this infestation measurably affect the protein and other nutritional content of my fruit?
Washington County Oregon
Expert Response
Greetings,
Thanks for the thoughtful question. It’s a fun one, and a bit outside our usual horticulture and pest‑management wheelhouse, that being said, I can point you toward what the research does say. There’s currently no evidence that spotted‑wing drosophila (SWD) larvae increase the nutritional value of raspberries in any measurable way. While insect larvae in general are high in protein, the amount present in an infested berry is extremely small and doesn’t change the fruit’s overall nutrient profile. What has been studied is how SWD affects fruit chemistry and quality. These resources may be helpful if you’d like to dig deeper:
Thanks for the thoughtful question. It’s a fun one, and a bit outside our usual horticulture and pest‑management wheelhouse, that being said, I can point you toward what the research does say. There’s currently no evidence that spotted‑wing drosophila (SWD) larvae increase the nutritional value of raspberries in any measurable way. While insect larvae in general are high in protein, the amount present in an infested berry is extremely small and doesn’t change the fruit’s overall nutrient profile. What has been studied is how SWD affects fruit chemistry and quality. These resources may be helpful if you’d like to dig deeper:
- OSU Extension: Spotted Wing Drosophila overview
https://extension.oregonstate.edu/collection/spotted-wing-drosophila-swd - OSU Extension: Managing SWD in Berries. https://extension.oregonstate.edu/catalog/em-9262-cultural-control-strategies-manage-spotted-wing-drosophila
