| Autor: |
Souza MT; Department of Plant Health, Federal University of Pelotas, Mailbox 354, Capão-do-Leão 96010-900, Rio Grande do Sul, Brazil., Souza MT; Department of Basic Pathology, Federal University of Parana, Mailbox 19031, Curitiba 81531-980, Parana, Brazil., Morais MC; Department of Plant Health, Federal University of Pelotas, Mailbox 354, Capão-do-Leão 96010-900, Rio Grande do Sul, Brazil., Oliveira DDC; Department of Plant Health, Federal University of Pelotas, Mailbox 354, Capão-do-Leão 96010-900, Rio Grande do Sul, Brazil., Melo DJ; Department of Chemistry, Federal University of Parana, Mailbox 19020, Curitiba 81531-990, Parana, Brazil., Figueiredo L; Department of Chemistry, Federal University of Parana, Mailbox 19020, Curitiba 81531-990, Parana, Brazil., Zarbin PHG; Department of Chemistry, Federal University of Parana, Mailbox 19020, Curitiba 81531-990, Parana, Brazil., Zawadneak MAC; Department of Basic Pathology, Federal University of Parana, Mailbox 19031, Curitiba 81531-980, Parana, Brazil., Bernardi D; Department of Plant Health, Federal University of Pelotas, Mailbox 354, Capão-do-Leão 96010-900, Rio Grande do Sul, Brazil. |
| Abstrakt: |
The spotted wing drosophila ( Drosophila suzukii ) is one of the main invasive pests of small fruits in the world. Thus, 19 essential oils (EOs) were selected to analyze the effects through toxicity and repellency on oviposition and D. suzukii adults. In addition, their lethal and sublethal effects on the pupal endoparasitoid Trichopria anastrephae were evaluated. The EOs of C. flexuosus and Mentha spp. had the highest toxicity observed in the topical application bioassay for D. suzukii . In contrast, the EOs of C. verum , C. citratus QT citratus , and C. winterianus showed the highest toxicity in the ingestion bioassay for D. suzukii . The dry residues of C. verum and C. citratus QT citratus reduced the oviposition of D. suzukii . In the repellency bioassays, the 19 EOs analyzed repelled ≅ 90% of the D. suzukii females. All EOs evaluated using the LC 90 values of the products provided mortality of less than 20% of T. anastrephae adults and did not cause a reduction in the parasitism of surviving T. anastrephae females. We conclude that the EOs evaluated have the potential to be used in the management of D. suzukii . They can also serve as selective active ingredients for the formulation and synthesis of new biopesticides. |
