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<p>Burton’s mouthbrooder <i>Astatotilapia burtoni</i> is an African cichlid fish exhibiting dramatic reversible phenotypic plasticity, used as a model species in neuroscience. Males engage in dyadic confrontations to establish and defend territory. Third-party males occasionally intervene in these conflicts. We examine the hypothesis that a winner effect could motivate especially high-ranking males to suppress other conflicts, preventing rivals from emerging. Using visual observation we recorded hierarchical interactions (aggression and fleeing behaviors) and third party disruptions. Consistent with this hypothesis, we found that relatively dominant males were most likely to engage dyadic conflict, as well as to intervene in third party interventions.</p>

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Third party intervention in conflict behavior among male African cichlid fish Astatotilapia burtoni

  • 期刊论文

  • 发表日期：

    2026年5月23日

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  • Andrew G. Fulmer,
  • E. deKay,
  • M. L.G. Ferrell

摘要

Burton’s mouthbrooder Astatotilapia burtoni is an African cichlid fish exhibiting dramatic reversible phenotypic plasticity, used as a model species in neuroscience. Males engage in dyadic confrontations to establish and defend territory. Third-party males occasionally intervene in these conflicts. We examine the hypothesis that a winner effect could motivate especially high-ranking males to suppress other conflicts, preventing rivals from emerging. Using visual observation we recorded hierarchical interactions (aggression and fleeing behaviors) and third party disruptions. Consistent with this hypothesis, we found that relatively dominant males were most likely to engage dyadic conflict, as well as to intervene in third party interventions.