Teflubenzuron Resistance in Diamondback Moth (Lepidoptera: Plutellidae)
Teflubenzuron Resistance in Diamondback Moth (Lepidoptera: Plutellidae)
复制标题
小菜蛾（鳞翅目：小菜蛾科）的氟苯脲抗性
DOI：
10.1093/jee/81.5.1277
复制
发表时间：
1988
影响因子：
2.2
通讯作者：
C. Sun
中科院分区：
文献类型：
--
作者：
F. Perng;M. Yao;C. Hung;C. Sun
小菜蛾敏感品系和田间品系的实验室筛选20代以上的幼虫对氟虫脲（一种干扰几丁质合成的苯甲酰苯基脲（BPU））的抗性仅为8-12倍。与另一种BPU，定虫隆，或一些常规杀虫剂的交叉抗性不明显。选择幼虫与teflubenzuron造成的小菜蛾发展相当大的阻力，这种化合物的杀卵效果。微粒体氧化酶的抑制剂丁醚酮恢复了氟虫脲对所选菌株的幼虫和卵的有效性，表明微粒体氧化是主要的抗性机制。经灭幼脲筛选的幼虫艾氏剂环氧酶和芳烃羟化酶活性明显高于敏感品系和田间品系。常规杀虫剂与定虫隆、定虫隆之间以及定虫隆与定虫隆之间缺乏交叉抗性，这表明小菜蛾体内可能涉及不同的微粒体氧化酶。
Laboratory selection of susceptible and field strains of diamondback moth, Plutella xylostella (L.), larvae for 20 generations or more resulted in only 8-12-fold resistance to teflubenzuron, a benzoylphenylurea (BPU) that interferes with chitin synthesis. Cross-resistance with another BPU, chlorfluazuron, or a number of conventional insecticides was not apparent. Selection of larvae with teflubenzuron caused the diamondback moth to develop considerable resistance to the ovicidal effect of this compound. Piperonyl butoxide, an inhibitor of microsomal oxidases, restored the effectiveness of teflubenzuron against larvae and eggs of the selected strains, indicating that microsomal oxidation was the major resistance mechanism. Larvae selected with teflubenzuron exhibited much higher aldrin epoxidase and aryl hydrocarbon hydroxylase activities than those of the susceptible and field strains. Lack of cross-resistance between conventional insecticides and teflubenzuron-chlorfluazuron, and between teflubenzuron and chlorfluazuron suggested that different microsomal oxidases in diamondback moth might be involved.