Disease Prevalence and Snail Predation Associated with Swell-Generated Damage on the Threatened Coral, Acropora palmata (Lamarck)
Disease Prevalence and Snail Predation Associated with Swell-Generated Damage on the Threatened Coral, Acropora palmata (Lamarck)
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DOI：
10.3389/fmars.2016.00077
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发表时间：
2016-01-01
影响因子：
3.7
通讯作者：
Smith, Tyler B.
中科院分区：
文献类型：
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作者：
Bright, Allan J.;Rogers, Caroline S.;Smith, Tyler B.
热带风暴等干扰造成珊瑚死亡，珊瑚覆盖面减少，这是物理损害的直接结果。风暴可能是珊瑚礁生态系统中最重要的干扰之一，了解其对珊瑚种群的长期影响至关重要。本研究的主要目的是确定疾病的流行趋势和蜗牛捕食受损和未受损的殖民地的受威胁的珊瑚物种，鹿角珊瑚掌状，在美属维尔京群岛（美属维尔京群岛）的一段严重的海洋涌浪。在圣托马斯和圣约翰的三个地点，A.在2008年3月的一系列大涌浪之后，在1年内每月对palmata进行调查，这些涌浪使监测的珊瑚礁上30-93%的菌落破碎。2008年4月至2009年3月进行的扰动后调查显示，膨胀对A。palmata造成的负面间接影响，加剧了最初的直接影响的物理干扰。在12个月后的膨胀事件，白色痘疾病的患病率是41%，持续从膨胀损坏的殖民地比未损坏的殖民地（df = 207，p = 0.01），最大的疾病患病率的差异发生在温水月份。此外，珊瑚螺，珊瑚虫，是46%更丰富的受损珊瑚比未受损的珊瑚在12个月后的膨胀事件（df = 207，p = 0.006）。
Disturbances such as tropical storms cause coral mortality and reduce coral cover as a direct result of physical damage. Storms can be one of the most important disturbances in coral reef ecosystems, and it is crucial to understand their long-term impacts on coral populations. The primary objective of this study was to determine trends in disease prevalence and snail predation on damaged and undamaged colonies of the threatened coral species, Acropora palmate, following an episode of heavy ocean swells in the US Virgin Islands (USVI). At three sites on St. Thomas and St. John, colonies of A. palmata were surveyed monthly over 1 year following a series of large swells in March 2008 that fragmented 30-93% of colonies on monitored reefs. Post-disturbance surveys conducted from April 2008 through March 2009 showed that swell-generated damage to A. palmata caused negative indirect effects that compounded the initial direct effects of physical disturbance. During the 12 months after the swell event, white pox disease prevalence was 41% higher for colonies that sustained damage from the swells than for undamaged colonies (df = 207, p = 0.01) with greatest differences in disease prevalence occurring during warm water months. In addition, the corallivorous snail, Coralliophila abbreviata, was 46% more abundant on damaged corals than undamaged corals during the 12 months after the swell event (df = 207, p = 0.006).