棉铃虫对久效磷抗性和敏感性品系的生物适合度  

Biological fitness of monocrotophos resistant and susceptible strains of Helicoverpa armigera (Hübner)

作　　者：任晓霞[1] 韩召军[1] 王荫长[1] 

机构地区：[1]南京农业大学农业部病虫监测与治理重点开放实验室,南京210095

出　　处：《南京农业大学学报》2001年第2期41-44,共4页Journal of Nanjing Agricultural University

基　　金：国家"973"基础研究项目 (J2 0 0 0 0 162 0 7) ;江苏省重点攻关项目 (BE96370 )

摘　　要：通过构建种群生命表 ,观察比较了棉铃虫 [Helicoverpaarmigera (H櫣ｂｎｅｒ) ]对久效磷抗性品系和敏感性品系的一系列生长发育和繁殖特征。结果表明 ,两品系的适合度差异显著。相对于敏感品系 ,抗性品系生长发育上表现为幼虫期和蛹期延长 ,蛹重减轻 ,化蛹率和羽化率降低 ;繁殖上表现为交配率、产卵量和卵孵化率降低。用种群数量趋势指数 (I)来确定两个品系的相对适合度 ,抗性品系对敏感品系的相对适合度仅为 0 14。The effects of monocrotophos resistance on fitness of cotton bollworm, Helicoverpa armigera (Hübner),were evaluated in terms of developmental and reproductive characteristics by constructing life table of resistant strain(LC R)and susceptible strain(XJ S).The results indicated that the LC-R strain possessed developmental disadvantages including prolonged larva and pupa duration,lighter pupa body weight,lower pupation and emergence rate,and reproductive disadvantages including lower copulation rate,effective fecundity and hatchability when compared with the XJ-S strain.Relative fitness was determined by population growth tendency index( I ).The LC-R strain was calculated to have a fitness value of 0 14 relative to the XJ-S strain,which could be contributed to the slow development of organophosphate resistance in field population of this pest.

关 键 词：棉铃虫 久效磷 抗药性 适合度 

分 类 号：S435.622[农业科学—农业昆虫与害虫防治] S481.4[农业科学—植物保护]