The corallivorous flatworm Amakusaplana acroporae: an invasive species threat to coral reefs?
The corallivorous flatworm Amakusaplana acroporae: an invasive species threat to coral reefs?
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DOI：
10.1007/s00338-013-1101-6
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发表时间：
2014-03-01
期刊：
影响因子：
3.5
通讯作者：
Wiedenmann, Joerg
中科院分区：
文献类型：
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作者：
Hume, Benjamin C. C.;D'Angelo, Cecilia;Wiedenmann, Joerg
陆地上的鹿角珊瑚培养物被所谓的吃鹿角珊瑚的扁形虫（AEFW）致命侵染是一种全球现象。我们通过研究来自英国的AEFW菌株的生物学和入侵潜力来评估AEFW对珊瑚礁构成风险的假设。分子分析确定该菌株为Amakusaplana acroporae，这是一个在美国两个水族馆和澳大利亚一个自然地点描述的新物种。我们的分子数据与生活史策略一起在这里描述表明，这个物种占大多数AEFW感染的报告病例。我们发现，当地的寄生活动损害了整个宿主群体的光适应能力。A.顶孔菌通过具有光合作用能力的宿主来源的虫黄色素和绿色荧光蛋白家族的色素获得极好的伪装。它显示出对鹿角珊瑚valida的偏好，但接受广泛的主机范围。寄生虫生存隔离（5-7天）可能允许入侵时引入的非本地物种在珊瑚礁。
Fatal infestations of land-based Acropora cultures with so-called Acropora-eating flatworms (AEFWs) are a global phenomenon. We evaluate the hypothesis that AEFWs represent a risk to coral reefs by studying the biology and the invasive potential of an AEFW strain from the UK. Molecular analyses identified this strain as Amakusaplana acroporae, a new species described from two US aquaria and one natural location in Australia. Our molecular data together with life history strategies described here suggest that this species accounts for most reported cases of AEFW infestations. We show that local parasitic activity impairs the light-acclimation capacity of the whole host colony. A. acroporae acquires excellent camouflage by harbouring photosynthetically competent, host-derived zooxanthellae and pigments of the green-fluorescent protein family. It shows a preference for Acropora valida but accepts a broad host range. Parasite survival in isolation (5-7 d) potentially allows for an invasion when introduced as non-native species in coral reefs.