Behavioural response of adult sea lamprey (Petromyzon marinus) to predator and conspecific alarm cues: evidence of additive effects
Behavioural response of adult sea lamprey (Petromyzon marinus) to predator and conspecific alarm cues: evidence of additive effects
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DOI：
10.1007/s10750-015-2508-6
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发表时间：
2016-03-01
期刊：
影响因子：
2.6
通讯作者：
Brown, Grant E.
中科院分区：
文献类型：
--
作者：
Di Rocco, Richard T.;Imre, Istvan;Brown, Grant E.
七鳃鳗是上五大湖的一种入侵害虫，它们会避开栖息地中代表危险的气味。这些气味包括相同的警报信号和捕食者信号，比如2-苯乙胺盐酸盐（PEA HCl），它存在于哺乳动物捕食者的尿液中。同种报警线索和捕食者线索混合在一起时是加性作用还是协同作用尚不清楚。本实验研究的目的是确定海七鳃鳗对PEA HCl的回避反应是否与释放浓度成正比，以及对捕食者提示（PEA HCl）和海七鳃鳗警报提示组合的回避反应是否具有加性。为了实现第一个目标，10组七鳃鳗被放置在人工河道中，并逐步提供浓度从5 9 10（-8）到5 x 10(-10) M的PEA HCl和去离子水控制。七鳃鳗的回避行为随着盐酸PEA浓度的增加而增加。为了实现第二个目标，将七鳃鳗暴露于PEA HCl，同种警报线索以及两者的组合。七鳃鳗对捕食者提示和同种警报提示的组合反应呈加性反应。
Sea lampreys Petromyzon marinus, an invasive pest in the Upper Great Lakes, avoid odours that represent danger in their habitat. These odours include conspecific alarm cues and predator cues, like 2-phenylethylamine hydrochloride (PEA HCl), which is found in the urine of mammalian predators. Whether conspecific alarm cues and predator cues function additively or synergistically when mixed together is unknown. The objectives of this experimental study were to determine if the avoidance response of sea lamprey to PEA HCl is proportional to the concentration delivered, and if the avoidance response to the combination of a predator cue (PEA HCl) and sea lamprey alarm cue is additive. To accomplish the first objective, groups of ten sea lampreys were placed in an artificial stream channel and presented with stepwise concentrations of PEA HCl ranging from 5 9 10(-8) to 5 x 10(-10) M and a deionized water control. Sea lampreys exhibited an increase in their avoidance behaviour in response to increasing concentrations of PEA HCl. To accomplish the second objective, sea lampreys were exposed to PEA HCl, conspecific alarm cue and a combination of the two. Sea lampreys responded to the combination of predator cue and conspecific alarm cue in an additive manner.