Toxicity of fluralaner against vegetable pests and its sublethal impact on a biocontrol predatory ladybeetle
| Autor: | Muhammad Musa Khan, Yueyin Chen, Liu Zhuoqi, Bao-Li Qiu, Guo Mujuan, Chunxiao Yang, Chen Shimin, A Fajar, Huipeng Pan, Jianhui Wu, Xuguo Zhou |
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| Rok vydání: | 2021 |
| Předmět: |
Fluralaner
Megalurothrips usitatus Insecticides Health Toxicology and Mutagenesis Henosepilachna vigintioctopunctata Biological pest control Biology Japonica Environmental pollution Toxicology chemistry.chemical_compound Propylaea japonica Vegetables Animals Humans GE1-350 Larva Public Health Environmental and Occupational Health General Medicine Isoxazoles Pesticide biology.organism_classification Fecundity Pollution United States Environmental sciences Coleoptera chemistry TD172-193.5 Predatory Behavior Instar Phyllotreta striolata Sublethal effect |
| Zdroj: | Ecotoxicology and Environmental Safety, Vol 225, Iss, Pp 112743-(2021) |
| ISSN: | 1090-2414 |
| Popis: | Fluralaner, a systemic pesticide, was originally registered with the US Food and Drug Administration in 2014 under the trade name Bravecto for flea treatment for pets. As a GABA antagonist, the footprint of fluralaner has expended beyond medical and veterinary pests in recent years. In this study, we examined the acute toxicity of fluralaner against three pests of Henosepilachna vigintioctopunctata, Megalurothrips usitatus, and Phyllotreta striolata in the Solanaceae, Fabaceae, and Cruciferae families, respectively, and the sublethal impact of fluralaner on Propylaea japonica, a widely distributed predatory ladybeetle. Based on LC50, fluralaner was effective against H. vigintioctopunctata (0.098 mg a.i. L−1 for the second instar larvae), M. usitatus (0.134 mg a.i. L−1 for adult females), and P. striolata (0.595 mg a.i. L−1 for adults). For P. japonica, however, fluralaner was substantially less effective (1.177 mg a.i. L−1 for the third instar larvae). Furthermore, the LC10 and LC30 of P. japonica were also consistently higher than the LC50 of the three pests. In addition, we did not observe any significant impacts of fluralaner at LC10 and LC30 on the life history traits, including body weight, developmental time, pre-oviposition period, and fecundity of P. japonica. Based on our results from acute toxicities and sublethal impacts, fluralaner is effective against vegetable pests, while potentially friendly to P. japonica when employed as a biological control agent. |
| Databáze: | OpenAIRE |
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