Figure 1

Sexually mature Drosophila suzukii female (a) and male (b) choice between highbush blueberry (Vaccinium corymbosum) fruit sprayed with four different treatments: (i) sterile ionized water (‘untreated fruit’) as a control, (ii) anthracnose solution from a laboratory Colletotrichum fioriniae culture (‘colony’), (iii) anthracnose solution from field-collected infected fruit (‘fruit’), and (iv) a solution prepared by filtering the ‘colony’ solution (‘filtered’) to remove the spores. In addition, flies were given a choice between highbush blueberry fruit versus no fruit (blank control). Percentages of nonresponders are shown in parenthesis. An asterisk (*) indicates significant differences between treatments, P ≤ 0.05.