Efficacy of afidopyropen against soybean aphid (Hemiptera: Aphididae) and toxicity to natural enemies

Abstract

BACKGROUND Soybean aphid, Aphis glycines (Hemiptera: Aphididae), remains the most significant soybean insect pest in the North Central Region of the USA. The sustainability of reliance on only a few insecticide groups for this pest is questionable. We evaluate afidopyropen, a novel pyropene insecticide (Group 9D), for efficacy against A. glycines in field and greenhouse experiments and toxicity to common natural enemies in laboratory experiments. RESULTS Across 4 site‐years of field experiments and a greenhouse experiment, afidopyropen reduced A. glycines populations similar to commonly used broad‐spectrum [i.e. lambda‐cyhalothrin (Group 3A) and chlorpyrifos (Group 1B)] insecticides and potential selective insecticides [i.e. sulfoxaflor (Group 4C) and flupyradifurone (Group 4D)]. In the greenhouse, however, A. glycines mortality was delayed slightly for afidopyropen compared to the other insecticides. In laboratory experiments with natural enemies of A. glycines, afidopyropen was not toxic to adult or third instar Hippodamia convergens (Coleoptera: Coccinellidae) or adult Orius insidiosus (Hemiptera: Anthocoridae), and was only moderately toxic to Aphelinus certus (Hymenoptera: Aphelinidae). CONCLUSION Afidopyropen is effective against A. glycines and relatively non‐toxic to natural enemies, and appears to be an effective option for integrated pest management and insecticide resistance management programs for A. glycines. © 2019 Society of Chemical Industry

Effects of Aphicides on Pecan Aphids and Their Parasitoids in Pecan Orchards

“…A study conducted on green peach aphid and its predator, the two spotted ladybeetle (Adalia bipunctata L.) (Coleoptera: Coccinellidae), found a significant difference in green peach aphid numbers between pre-and post-treatment but found no significant difference in two spotted ladybeetle larvae under the same parameters [14]. A laboratory study with soybean aphid found low toxicity to convergent ladybeetle (Hippodamia convergens Guerin-Meneville) (Coleoptera:Coccinellidae) and moderate toxicity to Aphelinus certus Yasnosh (Hymenoptera: Aphelinidae) [32]. The results of our study are similar to these results.…”

Status and outlook for acaricide and insecticide discovery

“…It is relatively non‐toxic to natural enemies and might be considered an effective option for IPM and IRM programs for soybean aphid ( Aphis glycines ) 16 …”

Physiological and Biochemical Responses to Sublethal Concentrations of the Novel Pyropene Insecticide, Afidopyropen, in Whitefly Bemisia tabaci MED (Q Biotype)

“…It has been reported that afidopyropen can be used as an effective measure for controlling notorious sucking and piercing insect pests, such as Aphis glycines Matsumura (Hemiptera: Aphididae), Monelliopsis pecanis Bissell (Hemiptera: Aphididae), B. tabaci, Diaphorina citri Kuwayama (Hemiptera: Liviidae), and Stephanitis pyrioides Scott (Hemiptera: Tingidae) [13][14][15][16][17]. the relative lack of toxicity of afidopyropen to natural enemies means, that along with other selective chemical agents, afidopyropen can be beneficial to integrated biological and chemical pest management; for example, afidopyropen was not toxic to Hippodamia convergens Guerin-Meneville (Coleoptera: Coccinellidae) and Orius insidiosus Say (Hemiptera: Anthocoridae), which are important natural enemies of A. glycines [18,19]. Additionally, afidopyropen provides an alternative chemical control option from a novel insecticide group, beyond the three that are currently heavily relied upon and alternated, that could be employed to aid in insecticide resistance avoidance and management programs, and considering that afidopyropen displays a new mechanism of killing insect pests, the application of afidopyropen is one hopeful supplement to common insecticides.…”