Abstract
Our study aimed to determine the capture efficiency of bottle traps with different colours, number of entry holes and bait liquids. For this purpose, yellow, blue, green, red, black, white and transparent (colourless) traps were tested. Apple cider vinegar, grape vinegar, white wine, yeast and water (control) were used as bait liquid. The number of entry holes was 2, 4, 6 and 8 holes/trap on the side of the bottle traps. The experiments were conducted in a randomised block design with three replicates in a fig orchard (variety Bursa Siyahi) in Aydın province from September 2018 to March 2019, by weekly performed trap controls. Red-coloured traps attracted the highest number of drosophilid individuals, followed by yellow colour. Regarding different baits, grape vinegar attracted the most drosophilid individuals, followed by white wine. Regarding the number of trap entry holes, the highest number of individuals were caught in traps with the highest number of holes (8). In all traps, Zaprionus tuberculatus was the species caught in the highest numbers, followed by Drosophila subobscura and Drosophila suzukii. Z. tuberculatus was mostly caught in traps containing grape vinegar, while D. subobscura and D. suzukii were mainly caught in traps containing white wine. In our study, the red-coloured traps containing vinegar with eight entry holes were the most effective in monitoring drosophilid populations.
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