Mutual visual signalling between the cleaner shrimp Ancylomenes pedersoni and its client fish
Mutual visual signalling between the cleaner shrimp Ancylomenes pedersoni and its client fish
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DOI：
10.1098/rspb.2018.0800
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发表时间：
2018-06-27
影响因子：
4.7
通讯作者：
Johnsen, Sonke
中科院分区：
文献类型：
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作者：
Caves, Eleanor M.;Green, Patrick A.;Johnsen, Sonke
清洁虾和它们的珊瑚鱼是一种由信号介导的种间相互作用，是研究种间信号动力学的一个有用系统。为了证明信号，必须证明所声称的信号至少(a)导致接收方状态的一致变化，(b)包含有关发送方固有状态或未来行为的可靠信息。此外，信号必须能被接收器感知。在这里，我们记录了清洁虾Ancylomenes pedersoni及其客户之间信号系统的基本属性。首先，我们使用原位行为相互作用的序列分析来表明清洁天线振荡可靠地预测后续清洁。如果虾没有通过天线摆动发出信号，客户在几秒钟内采用更深的颜色来清洁的可能性增加了三倍，这与深色变化表明客户想要清洁一致。通过实验操作，我们发现视觉刺激足以引起天线抖动，并且虾更有可能“清洁”黑暗而不是明亮的视觉刺激。最后，我们表明，当考虑到预期接收器的视觉敏锐度和光谱灵敏度时，天线抖动和颜色变化是可察觉的，这在清洁工和客户之间存在显著差异。我们的研究结果表明，清洁工和客户的信号都可以启动和调解他们的相互作用。
Cleaner shrimp and their reef fish clients are an interspecific mutualistic interaction that is thought to be mediated by signals, and a useful system for studying the dynamics of interspecific signalling. To demonstrate signalling, one must show that purported signals at minimum (a) result in a consistent state change in the receiver and (b) contain reliable information about the sender's intrinsic state or future behaviour. Additionally, signals must be perceptible by receivers. Here, we document fundamental attributes of the signalling system between the cleaner shrimp Ancylomenes pedersoni and its clients. First, we use sequential analysis of in situ behavioural interactions to show that cleaner antenna whipping reliably predicts subsequent cleaning. If shrimp do not signal via antenna whipping, clients triple their likelihood of being cleaned by adopting darker coloration over a matter of seconds, consistent with dark colour change signalling that clients want cleaning. Using experimental manipulations, we found that visual stimuli are sufficient to elicit antenna whipping, and that shrimp are more likely to 'clean' dark than light visual stimuli. Lastly, we show that antenna whipping and colour change are perceptible when accounting for the intended receiver's visual acuity and spectral sensitivity, which differ markedly between cleaners and clients. Our results show that signalling by both cleaners and clients can initiate and mediate their mutualistic interaction.