河南农业科学2026，Vol.55Issue(6)：92-99,8.DOI:10.15933/j.cnki.1004-3268.2026.06.009
高温和草地贪夜蛾防治药剂对夜蛾黑卵蜂的影响
Effects of High Temperature and Insecticides against Spodoptera frugiperda on Telenomus remus
摘要
Abstract
To clarify the effects of high temperature and insecticides on the parasitic capacity of Telenomus remus,and to optimize its integrated use with chemical controls against Spodoptera frugiperda,the lifespan and parasitic capacity of T.remus at 26℃and 35℃were determined,and the safety of five common insecticides against T.remus was also evaluated via selective toxicity assays.Results showed that when exposed to 35℃,the survival time and parasitism of T.remus decreased,the parasitism duration of single egg and the parasitism interval of eggs increased,and the emergence rate of T.remus decreased,and the negative effect increased with the prolongation of exposure time.Compared to 26℃,exposure to 35℃for 12,24,and 48 h reduced parasitoid survival time by 13.28%,13.55%,and 32.88%,respectively;the total parasitism by 20.84%,27.13%,and 46.26%,and emergence rate by 9.22%,11.80%,and 19.26%.Concurrently,the time required to parasitize a single egg was extended by 26.98%,38.25%,and 79.71%,and the parasitism interval of eggs increased by 22.93%,46.50%,and 71.81%.The 5%lufenuron,30%chlorantraniliprole,5%emamectin benzoate,10 billion PIB S.litura nucleopolyhedrovirus,and 10 billion cfu/g Bacillus thuringiensis,all exhibited negative selectivity against both adult T.remus and parasitized eggs.The selective toxicity ratio(STR)values for adult T.remus were 0.94,0.93,0.42,0.73,and 0.78,respectively,while the STR values for parasitized eggs were 0.62,0.71,0.73,0.86 and 0.75,respectively.In conclusion,high-temperature 35℃reduces the parasitic effect of T.remus,so the release of T.remus at 35℃should be avoided.While integrated use of T.remus with 5%lufenuron shows potential for field control of S.frugiperda,insecticide applications should be withheld as much as possible during the peak period of parasitized eggs.关键词
夜蛾黑卵蜂/草地贪夜蛾/高温/农药/选择毒力指数Key words
Telenomus remus/Spodoptera frugiperda/High temperature/Insecticide/Selective toxicity ratio(STR)分类
农业科技引用本文复制引用
杨虎权,颜朝涧萍,孙淦琳,蔡浩升,谢永辉,刘正玲,顾小飞,陈斌..高温和草地贪夜蛾防治药剂对夜蛾黑卵蜂的影响[J].河南农业科学,2026,55(6):92-99,8.基金项目
云南省烟草公司昆明市公司科技计划项目(KMYC202402) （KMYC202402）
云南省烟草公司科技计划项目(2023530000241011) （2023530000241011）
国家重点研发计划项目(2021YFD1400705) （2021YFD1400705）
