Farias Elizeu S, Silva Eliete M P, Teixeira Milena G, Ferreira Jhulyana S, Alvarenga Elson S, Picanço Marcelo C
a Departamento de Entomologia , Universidade Federal de Viçosa , Viçosa , Minas Gerais , Brazil.
b Departamento de Química , Universidade Federal de Viçosa , Viçosa , Minas Gerais , Brazil.
J Environ Sci Health B. 2018 Jan 2;53(1):49-56. doi: 10.1080/03601234.2017.1371556. Epub 2017 Oct 16.
In this study, the insecticide potential of eight phthalides derived from furan-2(5H)-one was evaluated against Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) larvae. The potency of the most active phthalides and the susceptibility of six different T. absoluta populations to these compounds were determined. The toxicity of these molecules to two non-target species (Solenopsis saevissima Smith and Tetragonisca angustula Latreille) was also evaluated. Two phthalides (3 and 4) presented insecticide potential against T. absoluta. Phthalide 4 was as toxic as piperine (positive control) and both phthalides exhibited rapid action (LT < 2 hours). The variation in the susceptibility of T. absoluta populations to the phthalides 3 and 4 was low. Neither phthalide presented physiological selectivity for non-target species. Therefore, the phthalides 3 and 4 are promising molecules, or at least, a starting point for a chemical optimization program leading to formulations for the management of the tomato leafminer. The application of such products should be conducted according to the principles of ecological selectivity.
在本研究中，评估了八种源自呋喃 - 2(5H)-酮的邻苯二甲酸酯对番茄潜叶蛾（Tuta absoluta (Meyrick)，鳞翅目：麦蛾科）幼虫的杀虫潜力。测定了活性最高的邻苯二甲酸酯的效力以及六个不同番茄潜叶蛾种群对这些化合物的敏感性。还评估了这些分子对两种非靶标物种（红火蚁Solenopsis saevissima Smith和小方头蚁Tetragonisca angustula Latreille）的毒性。两种邻苯二甲酸酯（3和4）对番茄潜叶蛾具有杀虫潜力。邻苯二甲酸酯4与胡椒碱（阳性对照）毒性相当，且两种邻苯二甲酸酯均表现出快速作用（LT<2小时）。番茄潜叶蛾种群对邻苯二甲酸酯3和4的敏感性差异较小。两种邻苯二甲酸酯对非靶标物种均无生理选择性。因此，邻苯二甲酸酯3和4是有前景的分子，或者至少是化学优化计划的起点，该计划旨在开发用于防治番茄潜叶蛾的制剂。此类产品的应用应按照生态选择性原则进行。
