Fig 5. Sticky Pis can monitor spotted-wing drosophila diel activity in the field.

We deployed 10 Sticky Pis in a blackberry field for 7 weeks and attached apple cider vinegar baits to half of them (blue versus red for unbaited control). This figure shows specifically the males Drosophila suzukii, the other Drosophilidae flies, and the Figitidae wasps. (A) Capture rate over time, averaged per day, showing the seasonal occurrence of insect populations. (B) Average capture rate over time of the day (note that time was transformed to compensate for changes in day length and onset—i.e., Warped ZT: 0 h and 12 h represent the sunset and sunrise, respectively, see Methods section). Both males D. suzukii and the other drosophilids were trapped predominantly on the baited devices. Both populations exhibit a crepuscular activity. In contrast, Figitidae wasps have a diurnal activity pattern and are unaffected by the bait. Error bars show standard errors across replicates (device×week). The underlying data for this figure can be found on figshare [20]. ZT, Zeitgeber time.