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三亚蜈支洲岛两种造礁石珊瑚的生理特征
许惠丽,冯博轩,谢敏睿,王宇彤,黄建中,肖海亮,王爱民,李秀保
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(海南大学南海海洋资源利用国家重点实验室,海南 海口 570228;海南大学海洋学院,海南 海口 570228)
摘要:
随着旅游开发和人类活动的加强,三亚蜈支洲岛南北两侧珊瑚礁区呈现出截然不同的水质环境状况和珊瑚群落分布。本研究通过分析三亚蜈支洲岛南北两侧两种造礁石珊瑚——丛生盔形珊瑚(Galaxea fascicularis)和疣状杯形珊瑚(Pocillopora verrucosa)的生理特征,旨在分析造礁石珊瑚应对水质环境变化的响应机制和应对策略。研究结果发现:两种珊瑚的生理指标表现出明显的南北区域差异。与南侧相比,北侧珊瑚的蛋白质含量显著性降低,SOD活性显著性的升高,表明北侧珊瑚抗氧化系统受到应激胁迫反应,而南侧珊瑚的生理状态更好。南、北两侧中丛生盔形珊瑚的生物量和能量物质含量有显著差异性,虫黄藻密度差异不显著;而疣状杯形珊瑚生物量和能量物质含量差异不显著,但其虫黄藻密度差异显著;表明丛生盔形珊瑚与疣状杯形珊瑚面对胁迫环境时,两者的能量代谢应激策略不同。因此,三亚蜈支洲岛南北两侧开发状况、水质环境的差异导致珊瑚生理状态呈现南北差异。
关键词:  海洋生物学  造礁石珊瑚  生理指标  珊瑚礁  蜈支洲岛  海南岛
DOI:10.3969/J.ISSN.2095-4972.2020.02.004
基金项目:国家重点研发计划资助项目 (2019YFD0901304); 广东省应用海洋生物学重点实验室开放课题及中国科学院热带海洋生物资源与生态重点实验室开放课题资助项目(2019011009); 国家自然科学基金资助项目(41476134); 海南大学引进人才启动资助项目[KYQD(ZR)1805]
Physiological characteristics of two reef building corals in Wuzhizhou Island, Sanya
XU Hui-li,FENG Bo-xuan,XIE Min-rui,WANG Yu-tong,HUANG Jian-zhong,XIAO Hai-liang,WANG Ai-min,LI Xiu-bao
(State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China;College of Marine Science, Hainan University, Haikou 570228, China)
Abstract:
With development of tourism and human activities,water environmental conditions and coral community distribution become remarkable different between the coral reefs in the north and south zones of Wuzhizhou Island, Sanya, Hainan Island. This study investigates the responsive mechanism and strategies of two species of corals (Galaxea fascicularis and Pocillopora verrucosa) to the environmental changes on the north and south zones of Wuzhizhou Island. The results demonstrate that the physiological indexes of two corals are quite different between two zones. The protein content was significantly lower and SOD activity was significantly higher in the north zone than in the south zone, indicating that the antioxidant systems of the two coral populations in the north are under stress and the southern corals are in a better physiological status. The differences are significant for biomass and energy content of G. fascicularis between the north and the south zones except for the density of zooxanthellae. However, the biomass and energy content of P. verrucosa show a little difference between the two zones while the densities of zooxanthellae are significantly different. The results suggest that the energy metabolism strategies of the corals in two zones are different under environmental stress. Therefore, the disparities of the developmental and environmental conditions are related closely to the different physiological states between the two corals in the north and the south zones of Wuzhizhou Island.
Key words:  marine biology  reef-building coral  physiological index  coral reef  Wuzhizhou Island  Hainan Island

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