Neem oil inhibits larval and pupal development of Drosophila suzukii in feeding trials under laboratory conditions

Neem oil is widely used for biological control of nearly all kind of leaf mining and sucking pest insects. Its effects, repressing reproduction and inhibiting moulting, could be advantageous for control of Drosophila suzukii if applicable. In larval bioassay with a commercially available Neem product mortality of up to 100% could be achieved when applying a ten times higher concentration than recommended for target insects.