Four botanical extracts are toxic to the hispine beetle, Brontispa longissima, in laboratory and semi-field trials
| Autor: | Sun Xiaodong, Chen Shaohua, Qin WeiQuan, Zhong BaoZhu, Zhong Guo-hua, Lv Chaojun, Weng Qunfang, Hu Meiying |
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| Rok vydání: | 2012 |
| Předmět: |
Male
Insecticides Catharanthus Population Article antifeedant activity Brontispa longissima Botany Animals Mikania education Mikania micrantha Ovum education.field_of_study biology Traditional medicine Apocynaceae Plant Extracts Ricinus Euphorbiaceae General Medicine Amaranthaceae Feeding Behavior ovicidal activity Catharanthus roseus biology.organism_classification Celosia Coleoptera oral toxicity Insect Science Larva Female |
| Zdroj: | Journal of Insect Science |
| ISSN: | 1536-2442 |
| Popis: | The potential of botanical extracts such as Celosia argenea L. (Caryophyllales: Amaranthaceae), Ricinus communis L. (Malpighiales: Euphorbiaceae), Mikania micrantha Humboldt, BonplandKunth (Astrales: Asteraceae), and Catharanthus roseus (L.) G. Don (Gentianales: Apocynaceae) for the control of Brontispa longissima Gestro was evaluated in a bioassay and semi-field trial. Dose-response bioassay showed no significant difference in oral-toxicity among the extracts of C. argenea, M. micrantha, and C. roseus to larvae and adult of B. longissima. All extracts tested decreased the hatchability of B. longissima eggs. In particular, the extract of M. micrantha showed higher activity than others at the concentration of 5 mg/mL. In an antifeedant bioassay, the extract of C. argenea showed higher activity against the 1(st) larvae than that of other extracts (AF50 0.03 mg/mL), and C. roseus showed higher antifeedant activity to the 2(nd) to 5(th) larvae and adult of B. longissima (AF50 0.34, 0.33, 0.11, 0.43, and 0.20 mg/mL, respectively). The semi-field trial indicated that all extracts used in this study might reduce the pest population. Extracts of C. argenea and M. micrantha showed higher activities than that of C. roseus and R communis, and the decrease in population was 75.56% and 80.00% (without Abbott's correction) after seven days of treatment, respectively, at a concentration of 20 mg/mL. Therefore, these active botanical extracts may possess potential for use in control of B. longissima. |
| Databáze: | OpenAIRE |
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