Moreno Shaiene C, Silvério Flaviano O, Lopes Mayara C, Ramos Rodrigo S, Alvarenga Elson S, Picanço Marcelo C
a Federal Institute of Education, Science and Technology of Rio de Janeiro , Pinheiral , RJ , Brazil.
b Institute of Agrarian Sciences, Universidade Federal de Minas Gerais , Montes Claros , MG , Brazil.
J Environ Sci Health B. 2017 Apr 3;52(4):237-243. doi: 10.1080/03601234.2016.1270681. Epub 2017 Jan 17.
There is increasing demand for new products for vegetable pest management. Thus, the aim of this study was to assess the toxicity of pyrethroids with acid moiety modifications to measure the insecticidal activity of these compounds on the lepidopteran vegetable pests Diaphania hyalinata (L.) (Lepidoptera: Pyralidae) and Asciamonuste (Latreille) (Lepidoptera: Pieridae) and evaluate their selectivity for the predatory ant Solenopsis saevissima (F. Smith) (Hymenoptera: Formicidae) and pollinator Tetragonisca angustula (Latreille) (Hymenoptera: Apidae: Meliponinae). Racemic mixtures of five new pyrethroids (30 µg molecule mg insect body weight) resulted in high (100%) and rapid (stable LD after 12 h) mortality in D. hyalinata and A. monuste. In A. monuste, the trans-pyrethroid [12] isomer showed similar toxicity to permethrin. For D. hyalinata, the trans-pyrethroid [9] isomer and cis-pyrethroid [10] isomer were as toxic as permethrin. Due to their low selectivity, these new pyrethroids should be applied on the basis of ecological selectivity principles to minimize impacts on nontarget organisms S. saevissima and T. angustula.
对蔬菜害虫管理新产品的需求日益增加。因此，本研究的目的是评估带有酸部分修饰的拟除虫菊酯的毒性，以测定这些化合物对鳞翅目蔬菜害虫透明绢野螟（Diaphania hyalinata (L.)，鳞翅目：螟蛾科）和窄翅稻弄蝶（Asciamonuste (Latreille)，鳞翅目：粉蝶科）的杀虫活性，并评估它们对捕食性蚂蚁凶猛收获蚁（Solenopsis saevissima (F. Smith)，膜翅目：蚁科）和传粉者窄胸方头蚁（Tetragonisca angustula (Latreille)，膜翅目：蜜蜂科：无刺蜂亚科）的选择性。五种新拟除虫菊酯的外消旋混合物（30 µg分子/毫克昆虫体重）导致透明绢野螟和窄翅稻弄蝶出现高死亡率（100%）且迅速（12小时后LD稳定）。在窄翅稻弄蝶中，反式拟除虫菊酯[12]异构体显示出与氯菊酯相似的毒性。对于透明绢野螟，反式拟除虫菊酯[9]异构体和顺式拟除虫菊酯[10]异构体与氯菊酯毒性相当。由于这些新拟除虫菊酯的选择性较低，应基于生态选择性原则应用它们，以尽量减少对非靶标生物凶猛收获蚁和窄胸方头蚁的影响。
