五种淡水轮虫种群增长参数的比较研究

COMPARATIVE STUDIES ON PRINCIPAL PARAMETERS OF POPULATION GROWTH OF FIVE FRESHWATER ROTIFERS

在32℃培养条件下，实验研究了5种淡水常见浮游轮虫的种群增长参数。通过编制生命表计算其内禀增长率rm（h（－1））、净生殖力（R0）和世代时间T（h）分别为：萼花臂尾轮虫－0．091、14．1和34．1；壶状臂尾轮虫－0．055、6．9和38．4；角突臂尾轮虫－0．035、4．9和50．9；臂尾水轮虫－0．038、4．3和46．1以及裂足臂尾轮虫－0．017、2．1和43．7。其中，萼花臂尾轮虫内禀增长率大，繁殖率高，可作为批量培养的首选种类。

Experiments on principal parameters of population growth of five common freshwater rotifers were conducted at 32℃ by sestiblishing their life tables. The intrinsic rates of increase (h(-1)), net reproductivity (progeny number/ind.) and generation time (h) of experimented rotifers were: 0.091, 14.1 and 34.1 for Brachionus calyciflorus; 0.055, 6.9 and 38.4 for B.urceolaris; 0.035, 4.9 and 50.9 for B.angularis;0.038, 4.3 and 46.1 for Epiphanes brachionus and 0.017, 2.1 and 43.7 for B. Schizocerca respectively. It was shown that B. calyciflorus is the most productive one and promising as a species for industrialized cultivation.