Arts Michael T, Evans Marlene S, Robarts Richard D
Environmental Sciences Division, National Hydrology Research Institute, 11 Innovation Boulevard, S7N 3H5, Saskatoon, Saskatchewan, Canada.
Oecologia. 1992 Jul;90(4):560-571. doi: 10.1007/BF01875451.
Seasonal patterns of lipid reserves and lipid classes of dominant zooplankton in a hyper-eutrophic lake were examined in relation to algal food resources. Triacylglycerol was the principle lipid energy reserve in all five species examined. During the height of the yearlyAphanizomenon flos-aquae bloom, lipid levels of the principle herbivores (Daphnia pulex andLeptodiaptomus sicilis) and an omnivore (Diacyclops bicuspidatus thomasi), were at their lowest concentration, suggesting that this cyanobacterium is nutritionally inadequate. As the cyanobacterial bloom began to collapse, bacterial numbers increased rapidly. The increase in bacterial numbers coincided with a large increase in areal lipid energy reserves ofDiaphanosoma leuchtenbergianum andChydorus sphaericus. Examination of seasonal patterns in the biomass of different algal species suggested thatRhodomonas minuta andCryptomonas erosa played a key role in nutrition, lipid deposition, and reproduction ofD. pulex andL. sicilis.
研究了富营养化湖泊中优势浮游动物的脂质储备和脂质类别季节性模式与藻类食物资源的关系。三酰甘油是所有五个被研究物种的主要脂质能量储备。在每年水华鱼腥藻大量繁殖的高峰期，主要食草动物（大型溞和中华哲水蚤）和一种杂食动物（双尖细巧华哲水蚤）的脂质水平处于最低浓度，这表明这种蓝藻营养不充足。随着蓝藻水华开始衰退，细菌数量迅速增加。细菌数量的增加与透明溞和球形盘肠溞的单位面积脂质能量储备大幅增加同时出现。对不同藻类物种生物量季节性模式的研究表明，微小红胞藻和隐藻在大型溞和中华哲水蚤的营养、脂质沉积和繁殖中起关键作用。
