Objective: To determine the synergists action of piperonyl butoxide(PBO) and S,S,Stributyl phosphorotrithioate(DEF) on toxicity of carbamate insecticides against Blattella germanica in Tehran city.Methods: In the curr...Objective: To determine the synergists action of piperonyl butoxide(PBO) and S,S,Stributyl phosphorotrithioate(DEF) on toxicity of carbamate insecticides against Blattella germanica in Tehran city.Methods: In the current study, German cockroach strains were collected from several hospitals and dormitories in Tehran.At the beginning, different concentrations of bendiocarb and carbaryl(insecticides belong to carbamate group) were determined by surface contact on a susceptible strain.Then, the level of susceptibility and type of resistance mechanisms in the collected strains from contaminated sites to the aforementioned insecticides were studied by using PBO and DEF synergists with different insecticide ratios to synergist(1:0, 1:1, 1:2, 1:3).Results: The DEF synergist along with bendiocarb and carbaryl completely eliminated the resistance in all strains but PBO did not completely eliminate the resistance in the strains of Mofid, Alvand, Valiasr hospitals and Shariati dormitory.Generally, the impact of DEF was observed in the removing resistance more than PBO.Conclusions: In most of these strains, resistance to bendiocarb and carbaryl is completely eliminated by DEF, showing a very high role of estraze enzymes in resistance to bendiocarb and carbaryl.But in most strains PBO does not remove the resistance because other mechanisms, such as reduced cuticle penetration and insensitivity to the acetylcholine esterase enzyme, may be involved.展开更多
我们关于 Blattella germanica 男性的表皮、内部的类脂化合物的研究的结果在 B 的表皮、内部的类脂化合物的作文在变化上提供新信息。在到杀虫药剂的存在的暴露以后的 germanica 男性。煤气的层析和煤气的层析团 spectrometry 分析被...我们关于 Blattella germanica 男性的表皮、内部的类脂化合物的研究的结果在 B 的表皮、内部的类脂化合物的作文在变化上提供新信息。在到杀虫药剂的存在的暴露以后的 germanica 男性。煤气的层析和煤气的层析团 spectrometry 分析被用来鉴别在男性和男性的表皮、内部的类脂化合物作文暴露了到杀虫药剂并且确定。有显著地有碳原子的一个偶数的更多的酸在里面分子，和这些通常也在更高的集中。下列酸在更高的集中：C16:0 和 C18:1， C18:2， C18:0。在暴露于杀虫药剂的男性和男性， 24 丰满的酸从 C6 到 C22 是坚定的。然而，有在 B 的表面类脂化合物的丰满的酸的一个显著地更高的内容。在到杀虫药剂的暴露以后的 germanica 男性。我们的结果显示 n 链烷的一个更高的内容，甾醇，特别地胆固醇，丰满的酸，和在 B 的丰满的酸甲基酉旨。在到 chlorpyrifos 的暴露以后的 germanica 表面比在男性，那没被暴露。展开更多
文摘Objective: To determine the synergists action of piperonyl butoxide(PBO) and S,S,Stributyl phosphorotrithioate(DEF) on toxicity of carbamate insecticides against Blattella germanica in Tehran city.Methods: In the current study, German cockroach strains were collected from several hospitals and dormitories in Tehran.At the beginning, different concentrations of bendiocarb and carbaryl(insecticides belong to carbamate group) were determined by surface contact on a susceptible strain.Then, the level of susceptibility and type of resistance mechanisms in the collected strains from contaminated sites to the aforementioned insecticides were studied by using PBO and DEF synergists with different insecticide ratios to synergist(1:0, 1:1, 1:2, 1:3).Results: The DEF synergist along with bendiocarb and carbaryl completely eliminated the resistance in all strains but PBO did not completely eliminate the resistance in the strains of Mofid, Alvand, Valiasr hospitals and Shariati dormitory.Generally, the impact of DEF was observed in the removing resistance more than PBO.Conclusions: In most of these strains, resistance to bendiocarb and carbaryl is completely eliminated by DEF, showing a very high role of estraze enzymes in resistance to bendiocarb and carbaryl.But in most strains PBO does not remove the resistance because other mechanisms, such as reduced cuticle penetration and insensitivity to the acetylcholine esterase enzyme, may be involved.
文摘我们关于 Blattella germanica 男性的表皮、内部的类脂化合物的研究的结果在 B 的表皮、内部的类脂化合物的作文在变化上提供新信息。在到杀虫药剂的存在的暴露以后的 germanica 男性。煤气的层析和煤气的层析团 spectrometry 分析被用来鉴别在男性和男性的表皮、内部的类脂化合物作文暴露了到杀虫药剂并且确定。有显著地有碳原子的一个偶数的更多的酸在里面分子，和这些通常也在更高的集中。下列酸在更高的集中：C16:0 和 C18:1， C18:2， C18:0。在暴露于杀虫药剂的男性和男性， 24 丰满的酸从 C6 到 C22 是坚定的。然而，有在 B 的表面类脂化合物的丰满的酸的一个显著地更高的内容。在到杀虫药剂的暴露以后的 germanica 男性。我们的结果显示 n 链烷的一个更高的内容，甾醇，特别地胆固醇，丰满的酸，和在 B 的丰满的酸甲基酉旨。在到 chlorpyrifos 的暴露以后的 germanica 表面比在男性，那没被暴露。
