Chinese Journal of Rice Science

• 研究报告 • Previous Articles     Next Articles

Influence of High Temperature on Yeast-like Endosymbiotes and Pesticide Resistance of Small Brown Planthopper, Laodelphax striatellus

ZHANG Xiao-jie; YU Xiao-ping*; CHEN Jian-ming   

  • Received:1900-01-01 Revised:1900-01-01 Online:2008-07-10 Published:2008-07-10

高温对灰飞虱体内类酵母共生菌和耐药性的影响

张晓婕1,2 ;俞晓平1,* ;陈建明1   

  1. 1浙江省农业科学院 植物保护与微生物研究所, 浙江 杭州 310021; 2杭州师范大学 生命与环境科学学院, 浙江 杭州 310036

Abstract: Newly-hatched nymphs of the small brown planthopper (SBPH, Laodelphax striatellus), including field and sensitive populations, were subjected to high-temperature (35℃) for 1 d, 2 d and 3 d, respectively. The number of yeast-like endosymbiotes in the 3rd instar SBPH reduced by 23.47%-34.23%, 57.86%-61.51% and 88.96%-90.71% after treated with high temperature for 1 d, 2 d, and 3 d, respectively. However, the size of yeast-like endosymbiotes was not obviously affected. Resistance of SBPH to three insecticides (midacloprid, chlorpyrifos and fipronil) decreased with increasing treatment time, with the order of resistance as follows: 1 d>2 d>3 d.

Key words: Laodelphax striatellus, yeast-like endosymbiote, high temperature, pesticide resistance

摘要: 利用35℃高温分别处理灰飞虱田间种群和敏感品系初孵若虫1~3 d,然后移至25℃下饲养至3龄。经1、2和3 d 处理后,灰飞虱体内类酵母共生菌数量分别减少了23.47%~34.23%、57.86%~61.51%和88.96%~90.71%;而类酵母共生菌的个体大小并无显著变化。进一步测定这些灰飞虱种群对杀虫剂吡虫啉、毒死蜱和锐劲特的耐药性,结果表明,高温处理时间越长,灰飞虱对这3种农药的耐药性越弱,即耐药性顺序为1 d>2 d>3 d。

关键词: 灰飞虱, 类酵母共生菌, 高温, 耐药性