Journal of Tropical Oceanography >
Comparative research of Symbiodinium diversity associated with two color morphs of reef-building coral Galaxea fascicularis
Received date: 2010-03-30
Revised date: 2010-07-08
Online published: 2011-05-04
Supported by
国家自然科学基金项目(40830850); 中国科学院知识创新工程重要方向项目(KZCX2-YW-227)
The symbiotic association between corals and Symbiodinium is a major contributing factor in the success of coral reef ecosystem with high biodiversity. Under stressful environmental conditions, such as abnormally high water temperatures, this symbiosis can break down and the zooxanthellae are lost in a process known as “bleaching”, which can cause the death of corals if stresses are severe or persistent. Reef-building corals have diverse colors even in different colonies within the same species, and the color plays a key role in acclimation of coral to environment. Galaxea fascicularis is a common reef-building coral in the Indo-Pacific area, including the coral reef areas in Sanya, Hainan Island, and displays a variety colors even with different colonies. The authors used PCR-RFLP to investigate whether or not variation in color is associated with Symbiodin-ium differentiation. The results reveal that G. fascicularis can be associated with Symbiodinium clade C and D either individu-ally or simultaneously. In addition, there is no correlation between the composition of Symbiodinium and the color morphs of the coral G. fascicularis. These results highlight the complexity of coral color such as GFP-like protein of coral and symbiont pigments, and need further research.
Key words： reef building coral; Symbiodinium; color; coral bleaching
ZHOU Guo-wei,HUANG Hui,YU Zi-niu,YOU Feng,LI Xiu-bao . Comparative research of Symbiodinium diversity associated with two color morphs of reef-building coral Galaxea fascicularis[J]. Journal of Tropical Oceanography, 2011 , 30(2) : 51 -56 . DOI: 10.11978/j.issn.1009-5470.2011.02.051
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