Calling by concluding sentinels: coordinating cooperation or revealing risk?
Calling by concluding sentinels: coordinating cooperation or revealing risk?
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DOI：
10.1371/journal.pone.0025010
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发表时间：
2011
期刊：
影响因子：
3.7
通讯作者：
Radford AN
中科院分区：
文献类型：
--
作者：
Hollén LI;Bell MB;Russell A;Niven F;Ridley AR;Radford AN
有效的合作需要有效协调个人对合作行为的贡献。大多数参与合作的社会性鸟类和哺乳动物会发出一系列的声音，这可能对调节个体贡献和群体合作都很重要。在这里，我们调查的作用，一个特定的电话在调节合作的哨兵行为在红头鸫（Turdoides bicolor）。“快速查克”的叫声通常由哨兵在完成守卫回合时发出，并可能协调个体作为哨兵的轮换，最大限度地减少没有哨兵的时间，或者可能发出捕食者存在或不存在的信号，调节随后哨兵回合的开始。我们问（一）当快速卡盘调用和（二）什么影响，他们之间的哨兵回合的时间间隔。与预期相反的是，我们发现很少有证据表明，这些电话参与调节的babbler哨兵系统：观察显示，他们的话语是只轻微的风的条件，而不是在所有的栖息地，而观察和实验回放表明，这些电话的给予没有影响之间的回合间隔。我们的结论是，babblers似乎不呼吁在哨兵回合结束时，以最大限度地提高效率，这种合作行为，但可能会使用发声在这个阶段，以影响更多的个人驱动的行为。
Efficient cooperation requires effective coordination of individual contributions to the cooperative behaviour. Most social birds and mammals involved in cooperation produce a range of vocalisations, which may be important in regulating both individual contributions and the combined group effort. Here we investigate the role of a specific call in regulating cooperative sentinel behaviour in pied babblers (Turdoides bicolor). ‘Fast-rate chuck’ calls are often given by sentinels as they finish guard bouts and may potentially coordinate the rotation of individuals as sentinels, minimising time without a sentinel, or may signal the presence or absence of predators, regulating the onset of the subsequent sentinel bout. We ask (i) when fast-rate chuck calls are given and (ii) what effect they have on the interval between sentinel bouts. Contrary to expectation, we find little evidence that these calls are involved in regulating the pied babbler sentinel system: observations revealed that their utterance is influenced only marginally by wind conditions and not at all by habitat, while observations and experimental playback showed that the giving of these calls has no effect on inter-bout interval. We conclude that pied babblers do not seem to call at the end of a sentinel bout to maximise the efficiency of this cooperative act, but may use vocalisations at this stage to influence more individually driven behaviours.
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影响因子：
9.2
作者：
Hollen, Linda I.;Bell, Matthew B. V.;Radford, Andrew N.
通讯作者：
Radford, Andrew N.
影响因子：
1.7
作者：
Radford, AN
通讯作者：
Radford, AN
影响因子：
2.5
作者：
Radford, Andrew N.;Ridley, Amanda R.
通讯作者：
Ridley, Amanda R.
影响因子：
2.5
作者：
GASTON, AJ
通讯作者：
GASTON, AJ
影响因子：
2.5
作者：
METCALFE, NB
通讯作者：
METCALFE, NB