Efficiency of Attractors and Traps for Capture of Spotted-Wing Drosophila in Vineyards1

Abstract

Pest monitoring is a practice that enables the estimation of populational density of insect-pests in crops. However, it requires the use of attractors and traps that present high efficiency. The objective of this work was to evaluate the efficiency of food attractors using different trap models for the capture of spotted-wing drosophila (Drosophila suzukii) insects, and the capture selectivity of these models in vineyards of Cabernet Sauvignon. The experiment was conducted in the 2018-2019 crop season, in São Joaquim, SC, Brazil. A randomized block design was used, in a 2 × 4 factorial arrangement consisted of two types of traps (PET bottle and plastic container), three attractors (SuzukiTrap®, Droskidrink, and Yeast), and distilled water as a control. The traps were distributed in a minimum distance of 15 m and fixed in the middle third of the plants. The collections and replacing of attractors were done with 21-day intervals. The data were analyzed through generalized linear models, using the Poisson distribution or Poisson with a dispersion parameter. All attractors tested captured adult D. suzukii insects. No significant differences were found between the trap types used. The findings of the present work showed that the trap plastic container with the Droskidrink attractor is the most suitable capture method to be used in monitoring programs for D. suzukii insects in commercial vineyards.

Feriez-vous du mal à une mouche ? Une introduction à Drosophila suzukii et aux méthodes alternatives pour contrôler cette espèce invasive.

“…D. suzukii uses visual signals to orient itself at long distance and olfactory stimuli at short distance (Cha et al, 2012;Little et al, 2019). Although several commercial products exist for the capture of D. suzukii, their efficacy and selectivity are highly variable depending on the crop and the time of the season (Brilinger et al, 2021;Larson et al, 2021;Whitener et al, 2022).…”

Integrated management of Drosophila suzukii

“…However, the efficacy of mass trapping depends strongly on the attractiveness of the lure used (Lee et al, 2013). A study conducted in Cabernet Sauvignon vineyards in the highland area of Santa Catarina state, testing a combination of traps and food attractants, showed that the attractive Droskidrink (red wine, apple cider vinegar, and sugar), provided the highest capture rates of D. suzukii (Brilinger et al, 2021).This was the same attractant that we used in Chapters II and III. This food attractant proved also to have the lowest non-target effects and selective against hymenopteran and coleopterans.…”

“…Females of D. suzukii can infest and cause damage to fruits in ornamental, wild, and economically important fruit trees (Mitsui, Beppu, & Kimura, 2010;Poyet et al, 2014). In Brazil, during the past decade, D. suzukii has already been detected in southern and southeastern regions, in peach orchards (Prunus persica) (Foppa et al, 2018), apple (Malus domestica) (Oliveira, Amaral Neto, & Santos, 2015) and vineyards (Vitis vinifera) (Brilinger, Arioli, Werner, Rosa, & Boff, 2021). It was also identified infesting strawberry fruits (Fragaria x ananassa) (R. S. S. dos Santos, 2014;Wollmann et al, 2020), blueberry (Vaccinium myrtillus) (Vilela & Mori, 2014), feijoa (Acca sellowiana) (Souza et al, 2017), papaya (Carica papaya), guava (Psidium cattleianum) (Wollmann et al, 2020;Zanuncio-Junior et al, 2018), blackberry (Rubus spp.)…”