Disease incidence is related to bleaching extent in reef-building corals
Disease incidence is related to bleaching extent in reef-building corals
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DOI：
10.1890/08-0445.1
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发表时间：
2009-10-01
期刊：
影响因子：
4.8
通讯作者：
McManus, John W.
中科院分区：
文献类型：
--
作者：
Brandt, Marilyn E.;McManus, John W.
最近爆发的珊瑚白化和疾病导致造礁珊瑚的丰度大幅下降。人们对这两种现象给予了极大的关注，以确定它们对珊瑚礁轨迹的影响。虽然每一种都与高温呈正相关，但很少有研究探讨漂白和疾病之间的潜在联系。因此，在2005年加勒比漂白事件期间，对佛罗里达群岛的珊瑚进行了纵向研究，以量化珊瑚的漂白程度和疾病发生率，并确定它们是否相关或作为离散现象。这些数据表明，总的来说，漂白程度和疾病的发病率之间存在正相关。然而，这两种现象之间的特定相互作用在疾病漂白组合中有所不同。具有较大漂白强度的Montastraea faveolata菌落后来发展为白色鼠疫（WP）感染。与此同时，Siderastrea siderea菌落黑斑病（DS）漂白更广泛地比明显健康的殖民地。最后，漂白和黑带病（BB）共同发生在Colpophyllia natans整个漂白事件。WP，BB和漂白都能够通过活组织的损失改变珊瑚种群的结构，DS是珊瑚礁健康的重要指标。了解这些死亡率来源如何相互作用的动态对于了解死亡率模式和预测珊瑚礁群落如何应对未来事件至关重要。
Recent outbreaks of coral bleaching and disease have contributed to substantial declines in the abundance of reef-building coral. Significant attention has been paid to both phenomena in order to determine their effect on reef trajectories. Although each is positively correlated with high temperatures, few studies have explored the potential links between bleaching and disease. A longitudinal study of corals in the Florida Keys was therefore conducted during the 2005 Caribbean bleaching event to quantify bleaching extent and disease incidence in corals, and to determine whether they were related or if they acted as discrete phenomena. These data indicated that overall, a positive correlation exists between bleaching extent and disease incidence. However, the specific interactions between these two phenomena varied among disease bleaching combinations. Montastraea faveolata colonies with greater bleaching intensities later developed white plague (WP) infections. Meanwhile, Siderastrea siderea colonies with dark spot disease (DS) bleached more extensively than apparently healthy colonies. Finally, bleaching and black band disease (BB) co-occurred on Colpophyllia natans throughout the bleaching event. WP, BB, and bleaching are each independently capable of changing the structure of coral populations through loss of living tissue, and DS is an important indicator of reef health. Understanding the dynamics of how these mortality sources interact is critical to understanding mortality patterns and predicting how reef communities will respond to future events.