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引用本文:任晶晶,林秋奇,韩博平.热带水库敞水区轮虫种类组成与数量结构—基于海南7座典型水库的分析.湖泊科学,2010,22(2):272-280. DOI:10.18307/2010.0218
REN Jingjing,LIN Qiuqi,HAN Boping.Species diversity and community structure of rotifers in pelagic zones of seven reser-voirs,Hainan Province. J. Lake Sci.2010,22(2):272-280. DOI:10.18307/2010.0218
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热带水库敞水区轮虫种类组成与数量结构—基于海南7座典型水库的分析
任晶晶, 林秋奇, 韩博平
暨南大学水生生物研究所, 广州 510632
摘要:
海南省是我国典型的热带区域,目前对该地区浮游动物的研究和报道极少.为了解该地区轮虫的群落组成,于2006年12月和2007年5月对分布于海南省7座典型的水库敞水区进行了采样调查.共采集到轮虫32种,多为营浮游性生活的广温性和嗜温性种类.在不同时期,水库具体优势种类及其相对优势度有-定差别,主要优势种个体较小且有被甲.在丰水期,剪形臂尾轮虫和镰状臂尾轮虫为主要优势种,在枯水期则以柬隐三肢轮虫为主要优势种.海南省7座水库的平均丰度和生物量分别为66.8ind./L和21.6μg/L,均远低于亚热带和温带地区.总体上,海南省水库敞水区轮虫呈现出种类少、个体小、丰度低的特点.尽管两次采样期间的轮虫优势种的相对丰度存在-定变化,但轮虫的种类组成结构相对-致,反映出该地区水库轮虫的群落结构具有较高稳定性.
关键词:  轮虫  群落  结构  水库  热带
DOI:10.18307/2010.0218
分类号:
基金项目:国家自然科学基金项目(U0733007,30670345)资助
Species diversity and community structure of rotifers in pelagic zones of seven reser-voirs,Hainan Province
REN Jingjing, LIN Qiuqi, HAN Boping
Institute of Hydrobiology,Jinan University,Guangzhou 510632,P.R.China
Abstract:
Hatpin Province is at a tropical zone in South China. Zooplankton diversity there has rarely been investigated. 1n orderto collect basic data and understand the community structure of rotifers in Hainan Province, seven typi;al reservoirs were sampledin December of 2006 and May of 2007. 32 species were identified, among which the majority was eurythermal or mesophilic spe-cies. In the two sampling periods, the dominant species and their relative dominance in abundance varied between different reser-voirs, almost all the dominant species were small sized ones with armor. The dominant species were Brachionus fofcula and Bra-chionus falcatus in the early flood season and Filinia cama.secla in the late dry season. The average abundance and biomass of roti-fers were 66. Bind/L and 21.6ug/L, respectively, which both were lower than those in the subtropics and temperate zones. Ingeneral, the rotifers were characterized by low species diversity, small body size and low abundance. Although the relative abun-dance of the dominant rotifers varied slightly between the dry and flood seasons, the consistent species composition indicates thatthe rotifers keep a steadily community structure in the tropical reservoirs.
Key words:  Rotifer  c:ommunity  structure  reservoir  tropic
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