【摘要】 在实验室条件下 ,用流水系统测定盐度和昼夜节律对菲律宾蛤仔摄食率的影响 .分别对 1 5、2 0、2 5、3 0、3 5这 5个盐度梯度 ,以及连续 2 4h的 0 0 :0 0、0 4:0 0、0 8:0 0、1 2 :0 0、1 6:0 0、2 0 :0 0这 6个时间点下菲律宾蛤仔的摄食率进行了测定 .结果表明 :在1 5～ 2 5的盐度范围内 ,蛤仔的摄食率随着盐度的升高而增大 ,在盐度 2 5时达到最大 ,而在 2 5～ 3 5盐度范围内随盐度的增加而减小 ;在一个昼夜里 ,蛤仔的摄食率存在显著的差异 ,夜间的摄食率明显高于白昼 ,0 0 :0 0和 1 2 :0 0分别是两个极值 ;菲律宾蛤仔是一个有着明显昼夜节律性的底栖动物 ,并且对盐度有一个适应范围 ,盐度 2 5～ 3 0是其最适的盐度 .本实验为以后进一步研究菲律宾蛤仔在贝类混养虾池中的作用奠定了基础 .更多还原

【Abstract】 The FR of Ruditapes philippinarum was determined at salinity of 15‰,20‰,25‰,30‰,35‰ and 00:00,04:00,08:00,12:00,16:00,20:00, in consecutive 24 hours. The results showed that the FR of Ruditapes was significantly high at salinity of 25‰ to 30‰,low at other salinity. Difference also showed in the experiments of day and night rhythm. The FR in mid-night(24:00) was extreme high and mid-noon’s(12:00) FR was the lowest. It appeared that Ruditapes philippinarum is a species of mollusk with day and night rhythm feeding behavior. That salinity of 25‰ to 30‰ was suitable to Ruditapes philippinarum’s can also be concluded. This work will do good for further research to make clear what role Ruditapes philippinarum played in composite-cultivating shrimp-ponds.更多还原