Pairs of Fish Resolve Conflicts over Coordinated Movement by Taking Turns
Pairs of Fish Resolve Conflicts over Coordinated Movement by Taking Turns
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DOI：
10.1016/j.cub.2009.11.045
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发表时间：
2010-01-26
期刊：
影响因子：
9.2
通讯作者：
Johnstone, Rufus A.
中科院分区：
文献类型：
--
作者：
Harcourt, Jennifer L.;Sweetman, Gemma;Johnstone, Rufus A.
当个人通过相互交流而获益，但对他们偏好的集体行动方针存在分歧时，协调可能很难实现[1-4]。在以前的工作中，我们发现成对的棘鱼更喜欢同步它们的旅行，以寻找食物[5]，可能是因为这降低了感知的捕食风险[6]。为了在群体协调上产生一定程度的冲突，我们训练个体鱼在两个备选的暴露位置之一期望食物，并配对具有不同期望的个体。与孤立的个人相比，一对成员表现出显着增加的倾向，交替觅食网站，一起轮流访问第一个人的青睐网站，然后其他个人的。使用马尔可夫链模型来推断其联合行为背后的个体规则，我们发现鱼对打破交替模式的伙伴做出反应，从而恢复到不太规则的行为。我们的研究结果证实了理论预测，即群体协调的冲突可以通过轮流解决[7-10]，并表明，在这个系统中，交替的模式被积极监测和维护。
When individuals stand to gain by interacting with one another, but disagree over their preferred course of collective action, coordination can be hard to achieve [1-4]. In previous work, we found that pairs of stickleback fish prefer to synchronize their trips out of cover to look for food [5], possibly because this reduces perceived predation risk [6]. To create a degree of conflict over group coordination, we trained individual fish to expect food at one of two alternative, exposed locations and paired individuals with different expectations. Compared with isolated individuals, members of a pair showed a significantly increased tendency to alternate between foraging sites, together taking turns to visit first one individual's favored site and then the other individual's. Using a Markov-chain model to infer the individual rules underlying their joint behavior, we found that fish respond to a partner that breaks the pattern of alternation by themselves reverting to less regular behavior. Our results confirm theoretical predictions that conflict over group coordination can be resolved by taking turns [7-10] and show that, in this system, the pattern of alternation is actively monitored and maintained.