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首页> 外文期刊>Coral reefs: journal of the International Society for Reef Studies >Climate-driven coral reorganisation influences aggressive behaviour in juvenile coral-reef fishes
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Climate-driven coral reorganisation influences aggressive behaviour in juvenile coral-reef fishes

机译：气候驱动的珊瑚重组影响了幼小的珊瑚礁鱼类的攻击行为

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摘要

Globally, habitat degradation is altering the abundance and diversity of species in a variety of ecosystems. This study aimed to determine how habitat degradation, in terms of changing coral composition under climate change, affected abundance, species richness and aggressive behaviour of juveniles of three damselfishes (Pomacentrus moluccensis, P. amboinensis and Dischistodus perspicillatus, in order of decreasing reliance on coral). Patch reefs were constructed to simulate two types of reefs: present-day reefs that are vulnerable to climate-induced coral bleaching, and reefs with more bleaching-robust coral taxa, thereby simulating the likely future of coral reefs under a warming climate. Fish communities were allowed to establish naturally on the reefs during the summer recruitment period. Climate-robust reefs had lower total species richness of coral-reef fishes than climate-vulnerable reefs, but total fish abundance was not significantly different between reef types (pooled across all species and life-history stages). The nature of aggressive interactions, measured as the number of aggressive chases, varied according to coral composition; on climate-robust reefs, juveniles used the substratum less often to avoid aggression from competitors, and interspecific aggression became relatively more frequent than intraspecific aggression for juveniles of the coral-obligate P. moluccensis. This study highlights the importance of coral composition as a determinant of behaviour and diversity of coral-reef fishes.
机译：在全球范围内，栖息地退化正在改变各种生态系统中物种的丰富度和多样性。本研究旨在确定气候变化下珊瑚组成的变化对栖息地的退化如何影响三只雀鲷（Pomacentrus moluccensis，P。amboinensis和Dischistodus perspicillatus）的幼鱼的丰度，物种丰富度和侵略行为，从而减少对珊瑚的依赖）。斑块礁的建造可模拟两种类型的礁石：当今易受气候引起的珊瑚白化影响的礁石，以及具有更强漂白性的珊瑚类群的礁石，从而模拟了气候变暖下珊瑚礁的未来可能。在夏季招募期间，允许鱼类群落在珊瑚礁上自然建立。与气候脆弱的珊瑚礁相比，气候稳健的珊瑚礁具有较低的珊瑚礁鱼类总物种丰富度，但是不同种类的珊瑚礁（在所有物种和生活史阶段都有所聚集）的总鱼类丰度没有显着差异。侵略性互动的性质（以侵略性追逐的数量来衡量）根据珊瑚的组成而有所不同;在气候稳健的珊瑚礁上，幼鱼较少使用基层以避免竞争者的侵略，而对于专性珊瑚的小白僵菌，种间侵害比种内侵害相对频繁。这项研究强调了珊瑚组成作为决定珊瑚礁鱼类行为和多样性的重要性。

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