Oriented responses of grapevine moth larvae Lobesia botrana to volatiles from host plants and an artificial diet on a locomotion compensator
Oriented responses of grapevine moth larvae Lobesia botrana to volatiles from host plants and an artificial diet on a locomotion compensator
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DOI：
10.1016/j.jinsphys.2009.01.006
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发表时间：
2009-04-01
影响因子：
2.2
通讯作者：
Guerin, Patrick M.
中科院分区：
文献类型：
--
作者：
Becher, Paul G.;Guerin, Patrick M.
葡萄藤蛾Lobesia botrana（鳞翅目：卷蛾科）是葡萄属葡萄的主要害虫。由于幼虫的能量储备有限，并处于干燥和捕食的危险之中，因此可以预期对植物挥发物的有效反应将引导它们寻找食物和住所。饥饿的第2或第3龄幼虫的挥发性排放物从他们的人工饲料和单一的寄主植物挥发物的反应记录在运动补偿器。将测试产品添加到通过30 cm直径伺服球的气流中。幼虫在单独的气流中表现出低直立度的非定向行走，但当人工饲料和水杨酸甲酯、1-己醇、（Z）-3-己烯-1-醇、松油烯-4-醇、1-辛烯-3-醇、（E）-4，8-二甲基-1，3，将7-壬三烯和（Z）-3-己烯基乙酸酯加入到空气流中。这种有针对性的化学趋化位移说明饥饿Lobesia幼虫对食物中某些挥发性线索的食欲。幼虫行为的分析表明，对一些测试的寄主植物挥发物的剂量依赖性反应，对水杨酸甲酯的反应在1纳克（测试的最低源剂量）时已经可见。这些行为反应表明，Lobesia幼虫可以有效地定位混合物的挥发性产品释放的食物来源，以及单一的挥发性成分，其寄主植物。这种以目标为导向的反应，更短的旅行时间和减少能量损失可能是幼虫生存的重要性，因为它减少了时间，他们暴露于生物和非生物的危害。(C)2009爱思唯尔有限公司版权所有。
Larvae of the grapevine moth Lobesia botrana (Lepidoptera: Tortricidae) are a major pest of vine, Vitis vinifera. As larvae have limited energy reserves and are in danger of desiccation and predation an efficient response to plant volatiles that would guide them to food and shelter could be expected. The responses of starved 2nd or 3rd instar larvae to volatile emissions from their artificial diet and to single host plant volatiles were recorded on a locomotion compensator. Test products were added to an air stream passing over the 30 cm diameter servosphere. The larvae showed non-directed walks of low rectitude in the air stream alone but changed to goal-oriented upwind displacement characterised by relatively straight tracks when the odour of the artificial diet and vapours of methyl salicylate, 1-hexanol, (Z)-3-hexen-1-ol, terpinen-4-ol, 1-octen-3-ol, (E)-4,8-dimethyl-1,3,7-nonatriene and (Z)-3-hexenyl acetate were added to the air stream. This chemoanemotactic targeted displacement illustrates appetence for certain volatile cues from food by starved Lobesia larvae. Analysis of the larval behaviour indicates dose dependent responses to some of the host plant volatiles tested with a response to methyl salicylate already visible at 1 ng, the lowest source dose tested. These behavioural responses show that Lobesia larvae can efficiently locate mixtures of volatile products released by food sources as well as single volatile constituents of their host plants. Such goal-oriented responses with shorter travel time and reduced energy loss are probably of importance for larval survival as it decreases the time they are exposed to biotic and abiotic hazards. (C) 2009 Elsevier Ltd. All rights reserved.