Australian subtropical white syndrome: a transmissible, temperature-dependent coral disease
Australian subtropical white syndrome: a transmissible, temperature-dependent coral disease
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DOI：
10.1071/mf09060
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发表时间：
2010-01-01
影响因子：
1.8
通讯作者：
Pereg, L.
中科院分区：
文献类型：
--
作者：
Dalton, S. J.;Godwin, S.;Pereg, L.
自 2000 年以来，在澳大利亚新南威尔士州孤岛海洋公园，观察到一种表现出白色综合症特征的疾病影响了涡轮珊瑚属的珊瑚。这种疾病最近被称为澳大利亚亚热带白色综合症，可通过直接接触和掠食性媒介传播，但尚未观察到通过水体传播。在水族箱实验中，66% 的治疗中发现，从健康的肠膜涡轮虫碎片与患病珊瑚样本直接接触的区域开始，逐渐出现组织损失。在任何对照中或当健康碎片不与患病珊瑚直接接触时，都没有发生组织损失。现场实验证实该疾病可通过直接接触传染。进一步的实验表明，当珊瑚暴露在夏季温度（26摄氏度）下时，组织损失率明显更高。这些结果表明，大多数气候变化模型中预测的温度升高可能会导致主要珊瑚物种的丧失，从而取代依赖珊瑚提供食物和庇护所的其他生物。最后，本研究表明，去除疾病边缘提供了一种管理工具，可以最大限度地减少动物流行期间珊瑚组织的损失。
Since 2000, a disease displaying white-syndrome characteristics has been observed affecting corals from the genus Turbinaria in the Solitary Islands Marine Park, New South Wales, Australia. Recently termed Australian subtropical white syndrome, this disease is transmissible through direct contact and by a predatory vector, but transmission through the water column has not been observed. In aquarium experiments, progressive tissue loss, extending from the region where healthy Turbinaria mesenterina fragments were in direct contact with samples of diseased coral, was noted in 66% of treatments. No tissue loss occurred in any of the controls or when healthy fragments were not in direct contact with diseased corals. Field experiments confirmed that the disease was infectious through direct contact. Further experiments showed that the rate of tissue loss was significantly higher when corals were exposed to summer temperatures (26 degrees C). These results suggest that temperature increases predicted in most climate change models could lead to the loss of dominant coral species, displacing other organisms that rely on corals for food and shelter. Finally, the present study showed that removal of the disease margin provides a management tool to minimise coral tissue loss during an epizootic.