对西施舌稚贝的摄食率及藻类选择性变化进行研究.结果表明,西施舌稚贝对直径11.2μm四爿藻具有较高的选择性,而对云霄微型藻和牟氏角毛藻的摄食率均偏低.西施舌稚贝对四爿藻的摄食率在第5h时达到最高值(174.928×10-5m g.-h 1).当西施舌稚贝分别摄食3种藻类时,在适宜的藻类密度范围内,摄食率均随着藻类密度的增大而迅速增加,当藻类密度达到一定值后,摄食率呈下降趋势.西施舌稚贝摄食率与藻类密度之间关系适用二次多项式表示. The feeding rates and the selective changes of algae of juvenile Xylogram were studied.The results showed that the juveniles of Xylogram were highly selective to Tetraselmisculum size of 11.2 μm, The rates of feeding to Siniperca chuatsi reached the highest value at 5h (174.928 × 10-5m g-h 1) .While when 3 species of algae were fed on juvenile Of the algae density range, the feeding rate increased rapidly with the increase of algae density, when the algae density reaches a certain value, the feeding rate showed a downward trend.Establis japonicus feeding rate and algae density relationship between the second quadratic polynomial Said.