中国农业科技导报2018，Vol.20Issue(6)：41-46,6.DOI:10.13304/j.nykjdb.2017.0873
低浓度食品级惰性粉对菜豆象发育和繁殖的影响
Effect of Low Concentrations of Food-grade Inert Dust on the Development and Reproduction of Acanthoscelides obtectus (Say)
摘要
Abstract
Acanthoscelides obtectus (Say) is the most destructive insect for leguminous crops around the world. Foodgrade inert dust is an efficient protective agent to control A. obtectus. Lethal concentrations of food-grade inert dust can cause mortality of A. obtectus. Whereas, the concentrations of inert dust may have differences in different position of the grain by mixing inert dust with the surface of grain in horizontal warehouse. It may cause the stored grain pests to be exposed to different amounts of drug. Therefore, it is of important practical guiding significance to study the effect of low inert dust concentration on the development and reproduction of A. obtectus. This paper studied the changes of its developmental duration, survival rate and fecundity after Phaseolus vulgaris treated with low concentrations of food-grade inert dust. The results showed that when A. obtectus was exposed to LC10, LC20 and LC50 of food-grade inert dust, both the hatchability and larval-pupal survival rates decreased, and there were significant differences on the larval-pupal survival rates compared with the control group (P＜0.05). Compared with the control, the adult longevity was shortened by 7.49 d, 8.74 d and 6.65 d, respectively, and the fecundity of single female was decreased significantly by 14. 55 eggs, 11. 75 eggs and 15. 40 eggs, respectively. The developmental duration of different stages were affected after treating with LC (10, LC (20 and LC (50 of food-grade inert dust. According to the survival rate and fecundity of A. obtectus treated by different concentrations of food-grade inert dust, the life table of fecundity was constructed. For LC (10, LC (20 and LC (50 treatments the intrinsic rate of increase (rm) decreased by 11. 11％, 22.22％ and 44.44％, respectively, and net reproductive rate (R0) decreased by 25.77％, 37.37％ and 69.11％, respectively, whereas the mean generation time (T) and population doubling time (t) were delayed. These results showed that low concentration of food-grade inert dust could suppress the population growth of A.obtectus.关键词
菜豆象/食品级惰性粉/低浓度/生命表/种群参数Key words
Acanthoscelides obtectus (Say)/food-grade inert dust/low concentration/life table/population parameter分类
农业科技引用本文复制引用
朱环,赵会义,戴仁怀,杨洪,江兆春,何宝玉..低浓度食品级惰性粉对菜豆象发育和繁殖的影响[J].中国农业科技导报,2018,20(6):41-46,6.基金项目
贵州省农业攻关项目(黔科合支撑[2017]2579) （黔科合支撑[2017]2579）
昆虫进化生物学和害虫控制国际科技合作基地项目(黔科合平台人才[2016]5802) （黔科合平台人才[2016]5802）
农业昆虫与害虫防治专业研究生卓越人才计划项目(黔教研合ZYRC字[2013]010)资助. （黔教研合ZYRC字[2013]010）
