Prey detection of aquatic predators: Assessing the identity of chemical cues eliciting prey behavioral plasticity
Prey detection of aquatic predators: Assessing the identity of chemical cues eliciting prey behavioral plasticity
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DOI：
10.1016/j.bse.2009.12.035
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发表时间：
2010-04-01
影响因子：
1.6
通讯作者：
Murray, Dennis L.
中科院分区：
文献类型：
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作者：
Ferland-Raymond, Bastien;March, Raymond E.;Murray, Dennis L.
通过环境传递的化学信号被认为是许多猎物对捕食风险反应的基础，但是尽管这些信号具有已知的生态和进化意义，但它们的基本组成却知之甚少。以无尾蝌蚪（猎物）和蜻蜓幼虫（捕食者）为研究对象，通过固相萃取和质谱分析确定了与捕食风险相关的化学线索。我们发现，蜻蜓幼虫捕食牛蛙（Rana catesbeiana）和水蛙（Rana septentrionalis）蝌蚪时，始终产生负离子m/z 501.3，但当蜻蜓禁食或捕食无脊椎动物猎物时，该离子不存在。当蝌蚪对蜻蜓的化学暗示做出行为反应时，蝌蚪的活动减少了，尤其是对蜻蜓捕食蝌蚪的反应。此外，在蜻蜓摄食试验中，蝌蚪活动水平与m/z 501.3化合物浓度呈负相关，表明该离子可能与蝌蚪反捕食者行为有关。(C) 2010 Elsevier Ltd.版权所有。
Chemical cues transmitted through the environment are thought to underlie many prey responses to predation risk, but despite the known ecological and evolutionary significance of such cues, their basic composition are poorly understood. Using anuran tadpoles (prey) and dragonfly larvae (predators), we identified chemical cues associated with predation risk via solid phase extraction and mass spectrometry of the extracts. We found that dragonfly larvae predators consistently produced a negative ion, m/z 501.3, when they fed on bullfrog (Rana catesbeiana) and mink frog (Rana septentrionalis) tadpoles, but this ion was absent when dragonflies were fasted or fed invertebrate prey. When tadpole behavioral responses to dragonfly chemical cues were examined, tadpoles reduced their activity, particularly in response to dragonflies feeding on tadpoles. Furthermore, a negative correlation was noted between the level of tadpole activity and the concentration of the m/z 501.3 compound in dragonfly feeding trials, indicating that this ion was possibly responsible for tadpole anti-predator behavior. (C) 2010 Elsevier Ltd. All rights reserved.