Goulder R
Department of Plant Biology, University of Hull, Hull, England.
Oecologia. 1973 Jun;13(2):177-182. doi: 10.1007/BF00345647.
The numbers of cells of the alga Scenedesmus (S. quadricauda and S. denticulatus) inside natural populations of grazing ciliated protozoa from a eutrophic pond (Loxodes magnus and L. striatus) were counted at 4 h intervals over two 24 h periods. There were no diel fluctuations in number of algal cells inside the protozoa, therefore the grazing rates were probably more or less constant over 24 h. L. magnus contained more algae than the smaller L. striatus. S. quadricauda was the more abundant Scenedesmus species in the phytoplankton and both Loxodes species contained more S. quadricauda than S. denticulatus, although the ratio S. denticulatus cells/S. quadricauda cells was greater inside the ciliates than in the phytoplankton.
在两个24小时时间段内，每隔4小时对来自富营养化池塘的食草纤毛虫（大斜管虫和条纹斜管虫）自然种群内的绿藻（四尾栅藻和齿状栅藻）细胞数量进行计数。原生动物体内藻类细胞数量没有昼夜波动，因此摄食率在24小时内可能大致恒定。大斜管虫所含藻类比体型较小的条纹斜管虫更多。四尾栅藻是浮游植物中更为丰富的栅藻物种，并且两种斜管虫体内所含的四尾栅藻都比齿状栅藻多，尽管纤毛虫体内齿状栅藻细胞与四尾栅藻细胞的比例高于浮游植物中的该比例。
