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Pairs of cooperating cleaner fish provide better service quality than singletons

机译：与单身人士相比，成对合作的清洁鱼提供更好的服务质量

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摘要

Service providers may vary service quality depending on whether they work alone or provide the service simultaneously with a partner. The latter case resembles a prisoner's dilemma, in which one provider may try to reap the benefits of the interaction without providing the service. Here we present a game-theory model based on the marginal value theorem, which predicts that as long as the client determines the duration, and the providers cooperate towards mutual gain, service quality will increase in the pair situation. This prediction is consistent with field observations and with an experiment on cleaning mutualism, in which stable male-female pairs of the cleaner wrasse Labroides dimidiatus repeatedly inspect client fish jointly. Cleaners cooperate by eating ectoparasites off clients but actually prefer to cheat and eat client mucus. Because clients often leave in response to such cheating, the benefits of cheating can be gained by only one cleaner during a pair inspection. In both data sets, the increased service quality during pair inspection was mainly due to the smaller females behaving significantly more cooperatively than their larger male partners. In contrast, during solitary inspections, cleaning behaviour was very similar between the sexes. Our study highlights the importance of incorporating interactions between service providers to make more quantitative predictions about cooperation between species.
机译：服务提供商可能会改变服务质量，具体取决于他们是单独工作还是与合作伙伴同时提供服务。后一种情况类似于囚徒的困境，其中一个提供者可能试图在不提供服务的情况下获得互动的好处。在这里，我们提出了一个基于边际价值定理的博弈模型，该模型预测，只要客户确定持续时间，并且提供商相互合作以实现互惠互利，服务质量就会在配对情况下提高。这一预测与实地观察和清洁共生的实验是一致的，在清洁实验中，稳定的雄性对雌性清洁濑鱼Labroides dimidiatus对反复共同检查client鱼。清洁工通过与客户接触吃外寄生虫来合作，但实际上更喜欢作弊和食用客户黏液。由于客户通常会因作弊而离开，因此在一对检查过程中，只有一名清洁工才能获得作弊的好处。在这两个数据集中，配对检查期间服务质量的提高主要是由于较小的女性比较大的男性伴侣表现出更多的合作精神。相反，在单独检查期间，两性之间的清洁行为非常相似。我们的研究强调了整合服务提供商之间的相互作用以对物种之间的合作做出更定量预测的重要性。

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  • 来源
    《Nature》 |2008年第7215期|p.964-966|共3页
  • 作者

    Redouan Bshary; Alexandra S. Grutter; Astrid S. T. Willener; Olof Leimar;

  • 作者单位

    University of Neuchatel, Department of Zoology, Rue Emile-Argand 11 Case postale 158, 2009 Neuchatel, Switzerland;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自然科学总论;
  • 关键词

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