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首页> 外文期刊>Marine ecology progress series >Coral mutualists enhance fish abundance and diversity through a morphology-mediated facilitation cascade
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Coral mutualists enhance fish abundance and diversity through a morphology-mediated facilitation cascade

机译：珊瑚互惠主义者通过形态学介导的促进级联反应提高鱼类的丰度和多样性

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摘要

Taxa that alter the morphology of foundation species have the potential to indirectly affect organisms that use the foundation species for habitat. On tropical reefs, coral morphology can be altered by epibiotic symbionts, potentially affecting fish populations that use coral as refuge. In the lagoons of Moorea, French Polynesia, mutualistic gammarid amphipods and chaetopterid polychaetes induce the growth of branch-like 'fingers' on corals of the genus Mon-tipora. I tested whether these fingers create habitat for reef fish, and found that juvenile and adult fish sheltered and larvae settled among fingers on both natural and experimental reefs. While the habitat structure induced by the mutualists appears to be of lower quality than that provided by branching corals such as Pocillopora sp., the presence of these structures in areas of the reef devoid of branching corals likely means that mutualist-induced structures increase the abundance and diversity of reef fish at the landscape scale.
机译：改变基础物种形态的类群有可能间接影响将基础物种用于栖息地的生物。在热带珊瑚礁上，表观生物共生体可以改变珊瑚的形态，从而可能影响以珊瑚为避难所的鱼类种群。在法属波利尼西亚的莫雷阿岛的泻湖中，互利共生的γ足类两足纲动物和opter翅类多足动物在Mon-tipora属的珊瑚上诱导了分支状“手指”的生长。我测试了这些手指是否为珊瑚礁鱼类提供了栖息地，并发现庇护和幼体的幼鱼和成年鱼在天然和实验珊瑚礁之间的手指间定居。尽管由共生者诱导的栖息地结构似乎质量低于分支珊瑚（如Pocillopora sp。）所提供的栖息地结构，但是在没有分支珊瑚的礁石区域中存在这些结构可能意味着由共生者诱导的结构会增加丰度和珊瑚礁鱼类在景观尺度上的多样性。

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