Effects of Inoculation Proportions and UV-B Radiation on the Growth Competition between Two Red Tide Algae: Alezandrium tamarense and Skeletonema costatum
The potential danger from the influence and injury of UV radiation on marine organisms has been increasing. In this study, for the first time we investigated the responses of the interspecies competition between two red tide algae, Alexandrium tamarense (At) and Skeletonema costatum (Sc) to different inoculation proportions and UV-B radiation enhancement by coculture method. Our results demonstrated that the different inoculation proportions of A. tamarense and S. costatum had apparent effects on interspecies competition between the two red tide algae. When the inoculation proportion of A. tamarense and S. costatum was At:Sc=1:4, S. costatum was dominant in competition. In contrast, A. tamarense was dominant when At:Sc=1:1 and At:Sc=4:1.In addition, the UV-B radiation treatment could change the nature of the competition between A. tamarense and S. costatum, and promote the competitive dominance of S. costatum. We observed that the competitive dominance of S. costatum changed more remarkably when At:Sc=1:4, and was in predominance when At:Sc=1:1 under UV-B radiation treatment.
Different inoculation proportions UV-B radiation Interspecies competition Inhabitation Red tide algaes
Peiyu Zhang Xuexi Tang Shuanglin Dong Renjun Wang
Division of Life Science and Technology, Ocean University of China Department of Environmental Scien Division of Life Science and Technology, Ocean University of China Qingdao, China
国际会议
上海
英文
4543-4546
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）