Evaluation of ten botanical insecticides against the sweet potato Weevil, Cylas formicarius (Fabricius, 1798) (Coleoptera: Brentidae)
| Autor: | Bimei Chen, Liyun Ren, Baoshan Chen, Yongmei Liao, Longfei He, Ganghui Zheng |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Brentidae Weevil fungi 030231 tropical medicine Rotenone Biology biology.organism_classification 01 natural sciences Choice test Toxicology Insect pest 010602 entomology 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine chemistry General Agricultural and Biological Sciences Cylas formicarius |
| Zdroj: | African Journal of Agricultural Research. 16:1531-1539 |
| ISSN: | 1991-637X |
| DOI: | 10.5897/ajar2020.15054 |
| Popis: | The sweet potato weevil, Cylas formicarius (Fabricius) (Coleoptera: Brentidae), is a destructive insect pest that damages sweet potatoes both in the field and during storage. To identify new environmentally friendly insecticides to control this insect pest, three assays (olfactory test, anti-feeding assay, and toxicity assay) were conducted to evaluate the efficacy and mode of action of 10 botanical insecticides against C. formicarius adults in 2015 and 2016. Of these 10 botanical insecticides, tea saponin, pyrethrins, and veratrine showed significant repellency in olfactory tests. Eight botanical insecticides showed anti-feeding effects in the feeding choice test. Five botanical insecticides had high toxicity. Among them, the lethal concentrations of rotenone were lowest followed by pyrethrins. The lethal time values of rotenone were shortest followed by nicotine. In conclusion, rotenone, pyrethrins, nicotine, and toosendanin have the potential to control C. formicarius adults. Of these, pyrethrins and toosendanin are more environmentally friendly than rotenone and nicotine and were identified as better insecticides to control C. formicarius. Key words: Toxicity, repellency, anti-feeding, Coleoptera, Brentidae, environmentally friendly insecticides. |
| Databáze: | OpenAIRE |
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