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应用正交设计方法, 研究了水温分别为(17.8±1.3 )℃和( 23.3±1.9 )℃条件下, 不同饵料和接种密度对褶皱臂尾轮虫(Brachionusplicatilis) 种群增长的影响. 结果表明: 1) 当水温为( 17.8 ±1.3 )℃时, 轮虫密度随接种密度的增加而提高, 而轮虫种群增长率则随接种密度的增加而下降; 2) 当水温为(17.8±1.3)℃时, 饵料和接种密度均对轮虫种群增长具显著影响, 水温为( 23.3 ±1.9)℃时, 饵料对轮虫种群增长具显著影响, 而接种密度对种群增长影响不显著; 3) 这3种生态因子的最佳组合为:水温为( 23.3 ±1.9 )℃、接种密度为轮虫100只/mL、饵料为酵母60g/ (亿个·d).
The effects of different diets and inoculation density on the population growth of Brachionus plicatilis were studied under the conditions of water temperature of (17.8 ± 1.3) ℃ and (23.3 ± 1.9) ℃, respectively, using orthogonal design method.The results showed that: 1 When the water temperature was (17.8 ± 1.3) ℃, the density of rotifers increased with the increase of inoculation density, while the growth rate of rotifers decreased with the increase of inoculation density. (2) When water temperature was (17.8 ± 1.3) ℃ Both feeding and inoculation density had significant effects on population growth of rotifers. At the water temperature of (23.3 ± 1.9) ℃, the feed had a significant effect on the population growth of rotifers, but the inoculation density had no significant effect on population growth. (3) The best combination of ecological factors was as follows: the water temperature was (23.3 ± 1.9) ℃, the inoculation density was 100 rotifers / mL and the feed was 60g / (100 million d · d) of yeast.