Temporal stability of Symbiodinium phylotype in scleractinian coral Galaxea fascicularis from a tropical fringing reef in the South China Sea |
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Authors: | Guowei Zhou Hui Huang Zhijun Dong Ziniu Yu |
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Institution: | (1) School of Molecular and Microbial Biosciences, University of Sydney, Sydney, NSW, 2006, Australia;(2) The Centre for Marine Studies, University of Queensland, Brisbane, QLD, 4072, Australia;(3) Department of Biology, Pennsylvania State University, University Park, PA 16802, USA;(4) Present address: Hawaii Institute of Marine Biology, University of Hawaii, PO Box 1346, Kaneohe, HI 96744, USA |
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Abstract: | Symbiodinium sp. occurs in a symbiotic association with various marine invertebrates, including the scleractinian corals. Understanding
the flexibility and specificity in coral-algal symbiosis can have important implications for predicting the future of coral
reefs in the era of global climate change. In the present study, we conducted Symbiodinium phylotype analysis, based on polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP), in the scleractinian
coral, Galaxea fascicularis, from a tropical fringing reef in Hainan Island, over a 1-yr period. Our results showed that Galaxea fascicularis could associate with Symbiodinium clade C and D either individually or simultaneously. However, during the sampling period, the Symbiodinium phylotype did not change significantly in the scleractinian coral Galaxea fascicularis, although the seawater temperature decreased sharply in the winter season. This study further suggests that the shift in
Symbiodinium communities in response to seasonally fluctuating environments might not be a universal feature of coral-algal associations. |
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