Evaluation on Biocontrol Efficacy of Episyrphus balteatus De Geer (Diptera: Syrphidae) Against Aphis craccivora, Myzus persicae, and Megoura crassicauda
文献类型: 外文期刊
作者: Shanshan Jiang;Hui Li;Kongming Wu
作者机构:
关键词: aphid;biocontrol efficacy;Episyrphus balteatus;functional response;preference
期刊名称: Insects
ISSN: 2075-4450
年卷期: 2025 年 16 卷 8 期
页码:
收录情况: SCIE(2025版)
摘要: Larvae of Episyrphus balteatus De Geer (Diptera: Syrphidae) are important natural enemies of common agricultural pests such as aphids (Hemiptera: Aphididae). This well-known aphidophagous flower fly is used as a biological control agent. The predatory functional responses, control efficacy, and oviposition and predatory preferences of E. balteatus against Aphis craccivora Koch, Myzus persicae Sulzer, and Megoura crassicauda Mordvilko were systematically determined through controlled laboratory experiments. The best functional response model of both second- and third-instar E. balteatus larvae to these three aphid species was the Holling type III model, except for the third-instar larvae to A. craccivora, for which the Holling type II model was superior. The A. craccivora population decline rates for ratios of 1:500 and 1:1000 were 94.67% and 100.00% on day 12 after inoculation; the M. persicae population decline rates for ratios of 1:2000 and 1:4000 reached 96.67% and 95.42% by day 12, and the M. crassicauda population at a ratio of 1:250 was completely eliminated by day 9, achieving a 100.00% population decline rate. The oviposition and predatory preferences of E. balteatus were consistent, in that it preferred M. crassicauda for oviposition and had a positive predatory preference for this aphid species. These results provide scientific evidence for the biological control strategy of E. balteatus against these aphids.
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