摘要
【目的】研究不同浓度环氧虫啶对多异瓢虫成虫存活及繁殖力等生命参数的影响。【方法】利用喷雾塔进行定量喷雾,测定不同浓度环氧虫啶处理24 h后多异瓢虫成虫的存活情况,计算LC20及LC50。利用这2个浓度处理多异瓢虫成虫,逐日记录成虫的存活情况以及产卵量、卵孵化率。【结果】环氧虫啶对多异瓢虫成虫的LC20及LC50分别为2.29和12.51 mg/L。经这2个浓度环氧虫啶处理后,多异瓢虫雌雄成虫寿命均显著缩短(P<0.05),产卵前期显著延长(P<0.05);对照组与LC20处理组的产卵量差异不显著(P>0.05),但LC50处理组产卵量显著降低(P<0.05);对照组卵孵化率显著高于2个处理组(P<0.05)。【结论】环氧虫啶对多异瓢虫成虫具有一定的毒杀作用与亚致死效应。
【Objective】To study the effects of different concentrations of the neonicotinoid insecticide cycloxaprid on adult survival,fecundity and other life parameters of the Hippodamia variegata(Goeze).【Method】Spray tower method was used to test the H.variegata adult survival rate after 24 h treated with different concentrations of cycloxaprid and calculate sublethal concentration LC20 and lethal intermediate concentration LC50.Then,the adult survival,fecundity and egg hatching rate of H.variegata treated with two concentrations were recorded every day.【Result】The toxicity test indicated the LC20 and LC50 concentration of cycloxaprid on H.variegata were 2.29 mg/L and 12.51 mg/L respectively.Treated with these two concentrations of cycloxaprid,the life span of female adult was significantly shortened(P<0.01),but the preoviposition period was significantly prolonged(P<0.05).The fecundity of LC20 treatment was not significantly different from that of the control group(P>0.05),but significantly different from that of LC50 treatment(P<0.05).The egg hatching rate of the control group was significantly higher than those of the LC20 and LC50 treatments(P<0.05).【Conclusion】The results show that cycloxaprid has certain toxic and sublethal effect on H.variegata adults.
作者
黄庆超
戴长春
张建萍
陈静
陆宴辉
HUANG Qingchao;DAI Changchun;ZHANG Jianping;CHEN Jing;LU Yanhui(Key Laboratory for Oasis Agricultural Pest Management and Plant Resource Utilization at Universities Level of Xinjiang Uygur Autonomous Region, College of Agronomy, Shihezi University, Shihezi Xinjiang 832000, China;State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China;College of Agriculture, Northeast Agricultural University, Harbin 150030, China)
出处
《新疆农业科学》
CAS
CSCD
北大核心
2020年第11期2050-2055,共6页
Xinjiang Agricultural Sciences
基金
国家重点研发计划(2017YFD0201900)
国家棉花产业技术体系(CARS-15-19)。
关键词
多异瓢虫
毒力作用
亚致死效应
寿命
繁殖力
Hippodamia variegata
toxic effect
sublethal effect
longevity
fecundity
