| 李琳，李晓媚，冶晓莉，李广升，林伟强，杜澄举，王偲,2026,尼泊金酯类防腐剂不影响红火蚁饵料搬运行为及茚虫威饵剂防治效果[J].环境昆虫学报,(2):580-588 |
| 尼泊金酯类防腐剂不影响红火蚁饵料搬运行为及茚虫威饵剂防治效果 |
| Paraben preservatives do not affect bait transport behavior of Solenopsis invicta and control effectiveness of indoxacarb bait |
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| DOI： |
| 中文关键词: 红火蚁 饵剂 变质 尼泊金酯 脂溶性防腐剂 |
| 英文关键词:Red imported fire ant bait contamination paraben lipid-soluble preservative |
| 基金项目:广东省林业科技计划项目（F25018） |
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| 摘要点击次数: 31 |
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| 中文摘要: |
| 【目的】饵剂法是防治红火蚁的重要方法之一。然而，商业红火蚁饵剂含有大量油脂，极易滋生微生物，导致有效成分降解和适口性降低。【方法】添加脂溶性防腐剂既可降低红火蚁饵剂的灭菌工艺成本，又能通过抑制微生物增殖延长产品货架期和使用时间。本研究假设3种可溶于油脂的尼泊金酯类防腐剂（对羟基苯甲酸甲酯、对羟基苯甲酸丙酯和对羟基苯甲酸丁酯）不会影响红火蚁饵剂的适口性和防治效果。通过野外多选择试验，分别比较了红火蚁对含有每种防腐剂（在大豆油中的浓度为0.05%、0.1%、0.2%）的饵料和对照饵料的搬运量。【结果】结果表明3种防腐剂均未干扰红火蚁的搬运行为（含各浓度防腐剂饵料的搬运量与对照无显著差异）。随后在实验室比较了添加防腐剂和未添加防腐剂的0.1%茚虫威饵剂对红火蚁的防治效果。【结论】结果表明无论是否添加防腐剂，红火蚁取食茚虫威饵剂的死亡率与致死中时间（LT50）均无显著差异，表明防腐剂对茚虫威无拮抗作用。本研究表明3种脂溶性尼泊金酯类防腐剂均可应用于红火蚁饵剂的生产。 |
| 英文摘要: |
| 【Aim】Baiting is one of the main methods for controlling red imported fire ants (Solenopsis invicta). However, commercial fire ant baits contain large amounts of lipids that may cause microbial contamination, leading to active-ingredient degradation and palatability reduction.【Methods】Adding lipid-soluble preservatives may reduce production costs associated with the sterilization processes of fire ant bait and extend product shelf life during storage and field application by inhibiting microbial proliferation. This study hypothesized that the three lipid-soluble paraben preservatives (methylparaben, propylparaben, and butylparaben) would not adversely affect palatability and effectiveness of fire ant baits. Field multiple-choice tests were conducted to compare bait transport amounts of S. invicta responding to bait containing each preservative (at concentrations of 0.05%, 0.1%, or 0.2% in soybean oil) and control baits.【Results】Results showed no significant differences in transportation among preservative-treated and control bait (the amounts of baits transported containing each preservative concentration showed no significant difference from the control). Laboratory bioassays were then conducted to evaluate the effectiveness of 0.1% indoxacarb baits with/without preservatives.【Conclusion】Mortality and medium lethal time (LT50) of fire ants were not significantly different among 0.1% indoxacarb baits containing preservative or not, indicating the absence of antagonistic effects between preservatives and the active ingredient. This study demonstrates the applicability of these three lipid-soluble paraben preservatives in fire ant bait production. |
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