Hu Haoyuan, Xi Yilong, Geng Hong
College of Life Science, Anhui Normal University, Wuhu 241000.
Ying Yong Sheng Tai Xue Bao. 2002 Jul;13(7):875-8.
With the food Chlorella pyrenoidosa and the method of population accumulative culture, the effects of food concentration on the population growth, body size, and egg size of the freshwater rotifer Brachionus angularis were studied. The results showed that there were very significant effects of food concentrations on the population growth rate, body size and egg size. The relationship between the population growth rate and the food concentration was curvilinear correlation. When the food concentration was 8.2453 x 10(6) cells.ml-1, the population growth rate reached it's maximum, 0.6085 d-1. Body size tended to enlarge with increasing food concentration. At the intermediate range of food levels between 6.0 x 10(6) cells.ml-1 and 9.0 x 10(6) cells.ml-1, the egg volume was larger than those at the other food concentrations.
以蛋白核小球藻为食物，采用种群累积培养方法，研究了食物浓度对淡水角突臂尾轮虫种群增长、个体大小和卵大小的影响。结果表明，食物浓度对种群增长率、个体大小和卵大小有极显著影响。种群增长率与食物浓度之间呈曲线相关。当食物浓度为8.2453×10⁶个细胞·ml⁻¹时，种群增长率达到最大值，为0.6085 d⁻¹。个体大小随食物浓度增加而趋于增大。在食物水平的中间范围6.0×10⁶个细胞·ml⁻¹至9.0×10⁶个细胞·ml⁻¹之间，卵体积大于其他食物浓度下的卵体积。
