大竹蛏稚贝滤水率的研究

TStudies on the filtration rate of juvenile Solen grandis Dunker

2008年10~11月间,采用实验生态学方法对大竹蛏（Solen grandis Dunker）稚贝进行了滤水率的研究。比较了不同饵料及浓度、规格、温度对大竹蛏稚贝滤水率（RF）的影响。结果表明：（1）在适宜浓度下,大竹蛏稚贝对5种单胞藻的滤水率均随着浓度的增大而增大;（2）大竹蛏稚贝的滤水率随着体质量的增大而增大,符合幂函数回归关系：RF=13.029WD0.730 9（R2=0.998 8）;（3）在一定温度范围内,随温度升高大竹蛏稚贝滤水率增加;超过一定温度范围,随着升高滤水率下降;当温度为23℃时,滤水率达到最大值（1.38±0.01）mL/（个？min）。

The effects of temperature,diets,diet density,and sizes on the filtration rate of Solen grandis were studies in a laboratory system from October to November 2008.It was found that the filtration rate of five species microalgae was increased with microalgae density increasing at the optimum microalgae density.The relationship between filtration rates and individual weight followed an exponential correlation,RF=13.029WD0.730 9（R2=0.998 8）.In addition,the filtration rate was increased with the increase of temperature,but was decreased if the temperature exceeded 23℃,at which the filtration rate reached the maximum of（1.38±0.01） ml /（ind？min）.