摘要
所测 9个淡水轮虫池和 6个混盐水轮虫池的浮游植物生物量 ,在轮虫发生高峰前期平均分别为 1 1 7 8mg/L和 1 56 5mg/L ;在轮虫高峰期平均为 39 0mg/L和 82 3mg/L ,即高峰期浮游植物生物量只为前期的 1 /3～ 1 /2。在种类组成上 ,前期均以小球藻、蓝隐藻、小环藻等小型种类为主 ,高峰期则以衣藻、扁藻等鞭毛藻类及角毛藻、螺旋藻、颤藻等丝状群体占优势。淡水池和混盐水池浮游动物生物量平均分别为 66 0mg/L和 1 1 5 7mg/L ,其中以轮虫为主 ,分别占总量的 82 9%和 84 3%,主要有萼花臂尾轮虫、壶状臂尾轮虫和褶皱臂尾轮虫等。浮游植物多样性指数 ,前期淡水池和混盐水池分别为 1 2 7和1 52 ,高峰期为 2 67和 3 0 4 ;浮游动物多样性指数分别为 1 66和 0 84。同时还讨论了轮虫池浮游生物种量的特点及浮游植物。
The average phytoplankton biomasses in 9 freshwater rotifer ponds and 6 brackish water ponds were 117 8 mg/L and 156 5 mg/L respectively in the prophase of the peak of rotifer, and 39 0 mg/L and 82 3 mg/L during the peak of rotifer biomass,i e 1/3～1/2 of the phytoplankton biomasses Microalges such as \%Chlorella, Chroomonas\% and \%Cyclotella\% were dominant in the prophase, however, flagellate such as \%Chlamydomonas\% and \%Platymonas\% and so on and filmentous populations such as \%Chaetoceros, Spirulina\% and \%Oscillatoria\% were dominant in the period of the peak The average zooplankton biomasses were 66 0 \{mg/L\} and 115 7 mg/L in freshwater and brackish water ponds,respectively. For zooplankton, rotifera \%Brachionus Calyciflorus\% (Pallas) \%B Urceus linnaeus\% and \%B Plicatilis muller\% were of importance components, their biomasses comprising 82 9% and 84 3% in the total zooplankton biomass, respectively In the prophase, variety index of phytoplankton was 1 27 in the freshwater ponds and 1 52 in the brackish water ponds. During the peak, hoiwever, it was 2 67 and 3 04, respectively. The variety indexes of zooplankton were 1 66 and 0 84 in the freshwater ponds and in the brackish water ponds, respectively. Properties of the plankton species composition and biomass in the rotifer ponds and the feed supply capacity of phytoplankton and rotifera were discussed
出处
《大连水产学院学报》
CSCD
2000年第3期186-192,共7页
Journal of Dalian Fisheries University
基金
农业部"九五"重点科研项目!(渔 95-B -96-0 7-0 5)
关键词
种类组成
生物量
浮游生物
轮虫培育池
species composition
biomass
plankton
rotifer breeding ponds
