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首页> 外文期刊>Chemical Senses >Orientation behaviour of the blood-sucking bug Triatoma infestans to short-chain fatty acids: Synergistic effect of L-lactic acid and carbon dioxide
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Orientation behaviour of the blood-sucking bug Triatoma infestans to short-chain fatty acids: Synergistic effect of L-lactic acid and carbon dioxide

机译：吸血臭虫Triatoma infestans对短链脂肪酸的定向行为：L-乳酸和二氧化碳的协同作用

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摘要

The role of short-chain fatty acids in the host-seeking behaviour of Triatoma infestans larvae was investigated using a locomotion compensator. Several short-chain fatty acids were tested alone over a wide range of doses, or in combination with L-lactic acid (L-LA; 100 mug). Bugs showed no attractive response to single carboxylic acids, but when L-LA was added to airstreams carrying specific intensities of either propionic (C3; 100 mug), butyric (C4; 1 mug) or valeric acid (C5; 1 mug), these mixtures elicited an attractive response, evincing a synergistic effect. No orientation response was observed when caproic acid (C6) was offered with L-LA at the doses tested. Two blends were created: (1) C3, C4 and C5 combined at the effective doses when added with L-LA [C3C4C5 (1)], and (2) C3, C4 and C5 combined at a third of those intensities [C3C4C5 (2)]. Both blends were tested alone, with L-LA (100 mug), with a sub-threshold concentration of CO2 (300 p.p.m. above the ambient level), and combined with both compounds together. Oriented responses of bugs were only observed with the blend (2) added with L-LA and with the combination of this lure with CO2. This last combination evoked a behavioural response similar in intensity to that induced by a live mouse.
机译：使用运动补偿剂研究了短链脂肪酸在Triatoma infestans幼虫的寄主寻求行为中的作用。几种短链脂肪酸分别在大剂量范围内或与L-乳酸（L-LA; 100杯）组合测试。虫子没有表现出对单一羧酸的诱人反应，但是当将L-LA添加到携带特定强度的丙酸（C3; 100杯），丁酸（C4; 1杯）或戊酸（C5; 1杯）的气流中时，这些混合物引起了诱人的反应，显示出协同作用。当以测试剂量向L-LA提供己酸（C6）时，未观察到取向响应。创建了两种混合物：（1）当添加L-LA [C3C4C5（1）]时以有效剂量组合C3，C4和C5，以及（2）以这些强度的三分之一[C3C4C5（ 2）]。两种掺混物均使用L-LA（100杯），亚阈值浓度的CO2（高于环境水平300 p.p.m.）单独测试，并与两种化合物混合在一起。只有在掺有L-LA的混合物（2）以及这种诱饵与CO2的结合下，才能观察到虫子的定向响应。最后的组合引起了行为反应，其强度与活小鼠诱导的行为相似。

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