National Center for Natural Products Research, The University of Mississippi, University, MS 38677, USA.
Biological Control of Pests Research Unit, USDA-ARS, Stoneville, MS 38776, USA.
Molecules. 2023 Jul 22;28(14):5584. doi: 10.3390/molecules28145584.
flower essential oils (EOs) blue Egyptian (EO-), chamomile German CO2 (EO-), and chamomile German (EO-) and the pure compound α-bisabolol were evaluated against red imported fire ants (RIFA), Buren, black imported fire ants, Forel (BIFA), and hybrid imported fire ants (HIFA) for their repellency and toxicity. A series of serial dilutions were tested starting from 125 µg/g until the failure of the treatment. Based on the amount of sand removed, EO- showed significant repellency at dosages of 7.8, 7.8, and 31.25 µg/g against RIFA, BIFA, and HIFA, respectively. EO- was repellent at 3.9, 7.8, and 31.25 µg/g against BIFA, RIFA, and HIFA, whereas α-bisabolol was active at 7.8, 7.8, and 31.25 µg/g against BIFA, HIFA, and RIFA, respectively. DEET (N, N-diethyl-meta-toluamide) was active at 31.25 µg/g. Toxicity of EOs and α-bisabolol was mild to moderate. For EO- LC values were 93.6 and 188.11 µg/g against RIFA and BIFA; 98.11 and 138.4 µg/g for EO-; and 142.92 and 202.49 µg/g for EO-, respectively. The LC of α-bisabolol was 159.23 µg/g against RIFA. In conclusion, EOs and α-bisabolol offer great potential to be developed as imported fire ant repellents.
评估了花精油（EO）蓝色埃及（EO-）、德国洋甘菊 CO2（EO-）和德国洋甘菊（EO-）以及纯化合物 α- 倍半萜醇对红火蚁（RIFA）、布伦、黑进口火蚁、福雷尔（BIFA）和杂交进口火蚁（HIFA）的驱避性和毒性。从 125µg/g 开始测试一系列连续稀释液，直到处理失败。根据移走的沙子量，EO-对 RIFA、BIFA 和 HIFA 的剂量分别为 7.8、7.8 和 31.25µg/g 时表现出显著的驱避性。EO-对 BIFA、RIFA 和 HIFA 的驱避剂量分别为 3.9、7.8 和 31.25µg/g，而 α- 倍半萜醇对 BIFA、HIFA 和 RIFA 的活性剂量分别为 7.8、7.8 和 31.25µg/g。DEET（N，N-二乙基-间-甲苯酰胺）在 31.25µg/g 时有效。EO 和 α- 倍半萜醇的毒性为轻度至中度。对于 EO-，LC 值分别为 93.6 和 188.11µg/g 对 RIFA 和 BIFA；98.11 和 138.4µg/g 对 EO-；和 142.92 和 202.49µg/g 对 EO-，分别。α- 倍半萜醇对 RIFA 的 LC 值为 159.23µg/g。总之，EO 和 α- 倍半萜醇具有很大的潜力开发为红火蚁驱避剂。
