Experimental assessment of the feeding effort of three scleractinian coral species during a thermal stress: Effect on the rates of photosynthesis
Experimental assessment of the feeding effort of three scleractinian coral species during a thermal stress: Effect on the rates of photosynthesis
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DOI：
10.1016/j.jembe.2010.05.007
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发表时间：
2010-07-31
影响因子：
2
通讯作者：
Levy, Oren
中科院分区：
文献类型：
--
作者：
Ferrier-Pages, Christine;Rottier, Cecile;Levy, Oren
本研究旨在调查三种石珊瑚（Stylophora pistillata、Turbinaria reniformis 和 Galaxea fasciulousis）在对照（26 摄氏度）和短期应激条件（31 摄氏度）之间摄食率的变化，并评估摄食对珊瑚光合作用效率的影响。摄食率根据珊瑚的摄食努力而变化，而珊瑚的摄食努力本身又取决于环境条件。事实上，S. pistillata 在 31 摄氏度时显着降低了其摄食率，而 T. reniformis 和 G. fasciculis 的摄食率在 26 至 31 摄氏度之间有所增加。与摄食率无关，食物供应有助于防止虫黄藻光合机构受损。事实上，在叶绿素数量减少和光系统 II 受到光抑制后，这三个物种的饥饿珊瑚的电子传输速率和光合作用速率均显着下降。然而，在加热喂养的珊瑚中没有观察到白化现象，其光合作用效率或性能也没有下降。 (C) 2010 爱思唯尔 ay。版权所有。
This study aimed at investigating changes in feeding rates of three scleractinian coral species (Stylophora pistillata, Turbinaria reniformis and Galaxea fascicularis) between control (26 degrees C) and short-term stress conditions (31 degrees C), and to assess the effect of feeding on the photosynthetic efficiency of the corals. Feeding rates varied according to the feeding effort of the corals, itself depending on the environmental conditions. Indeed, S. pistillata significantly decreased its feeding rates at 31 degrees C, while rates of T. reniformis and G. fascicularis were increased between 26 and 31 degrees C. Independently of the feeding rates, food supply helped in preventing damage to the photosynthetic apparatus of the zooxanthellae. Indeed, starved corals from the three species showed significant decrease in both the electron transport rates and in the photosynthetic rates, following a loss in the amount of chlorophyll and experiencing photoinhibition of the photosystem II. However, no bleaching was observed in heated fed corals, with no decrease in their photosynthetic efficiency or performance. (C) 2010 Elsevier ay. All rights reserved.