昆虫对生物杀虫剂的耐药性 昆虫对生物杀虫剂的耐药性 Bacillus thuringiensis 昆虫的耐药性
Science (New York, N.Y.)
|July 12, 1985
概括
印度面粉 (Plodia interpunctella) 可以迅速发展出对Bacillus thuringiensis (Bt) 微生物杀虫剂的耐药性. 这种稳定和遗传的耐药性可以在几代人内出现,影响储存的谷物保护.
科学领域:
- 农业昆虫学 农业昆虫学
- 抗虫剂耐药性 抗虫剂耐药性 抗虫剂耐药性
- 微生物害虫控制 微生物害虫控制
背景情况:
- 菌 (Bacillus thuringiensis) 是一种广泛使用的微生物杀虫剂.
- 以前认为对Bt毒素的耐药性不太可能.
- 普洛迪亚间点虫 (Plodia interpunctella) 是储存的谷物产品的重要害虫.
研究的目的:
- 调查Plodia interpunctella可能对Bt产生抗药性的可能性.
- 量化P. interpunctella中Bt耐药性的水平和遗传性.
主要方法:
- 在用Bt.治疗的饮食中养P. interpunctella.
- 测量多代的阻力水平.
- 评估耐药性稳定性和遗传模式.
主要成果:
- 在几代人内,P. interpunctella对Bt产生了显著的耐药性.
- 耐药性在两代人中增加了30倍,在15代人后达到100倍的高原.
- 在选择停止后,抗性是稳定的,并且作为衰退性特征被遗传.
- 从经过处理的容器中采集的现场菌株比未经处理的容器中采集的菌株具有更高的耐药性.
结论:
- 在P. interpunctella中可能出现Bt耐药性的快速发展.
- 田野种群可以很快发展出对Bt杀虫剂的耐药性.
- 这一发现对Bt在储存产品保护方面的长期疗效有影响.
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