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首页> 外文期刊>Coral reefs: journal of the International Society for Reef Studies >Epibiotic mutualists alter coral susceptibility and response to biotic disturbance through cascading trait-mediated indirect interactions
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Epibiotic mutualists alter coral susceptibility and response to biotic disturbance through cascading trait-mediated indirect interactions

机译：表观生物互惠生通过级联性状介导的间接相互作用改变珊瑚的敏感性和对生物干扰的反应

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摘要

Biotic disturbances are important drivers of community structure, but interactions among community members can determine trajectories of response and recovery. On coral reefs in French Polynesia, epibiotic amphipods induce the formation of branch-like "fingers" on flat colonies of encrusting Montipora coral. The fingers form as coral encrusts the amphipods' tubes and lead to significant changes in colony morphology. I tested whether the induced morphological changes affect Montipora's susceptibility to predation by pincushion (Culcita novaeguineae) and crown-of-thorns sea stars (Acanthaster planci). Montipora with fingers were less likely to be attacked and more likely to survive attack than colonies without fingers. Furthermore, the presence of fingers altered A. planci prey preference. Sea stars preferred Montipora without fingers over other common coral genera, but preferred other genera when Montipora had fingers. Amphipods indirectly affected Montipora's resistance and resilience to predation, and the susceptibility of other coral genera to predation, through induced morphological changes. Such trait-mediated indirect interactions likely play an important role in determining how species respond to periodic sea star outbreaks.
机译：生物干扰是社区结构的重要驱动力，但是社区成员之间的互动可以确定响应和恢复的轨迹。在法属波利尼西亚的珊瑚礁上，表生生物的两足纲动物会在包裹着蒙提波拉珊瑚的平坦殖民地上形成分支状的“手指”。当珊瑚包裹住两栖动物的管并导致菌落形态发生重大变化时，手指就形成了。我测试了诱导的形态学变化是否影响了枕形虫（Culcita novaeguineae）和荆棘冠海星（Acanthaster planci）对Montipora捕食的敏感性。与没有手指的菌落相比，带有手指的Montipora受到攻击的可能性较小，并且更有可能幸存下来。此外，手指的存在改变了拟南芥的猎物。与其他常见珊瑚属相比，海星更喜欢不带手指的Montipora，但是当Montipora有手指时，更喜欢其他属。两栖动物通过诱导的形态学变化间接影响了蒙提帕拉对捕食的抵抗力和复原力，以及其他珊瑚属对捕食的敏感性。这种性状介导的间接相互作用可能在确定物种对周期性海星暴发的反应中起重要作用。

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