不同温度下刺参对贝类生物性沉积物的摄食与吸收

以常规实验生态方法 ,研究了不同温度下不同规格刺参对贝类生物性沉积物的摄食与吸收 ,得出了实验过程中 ,平均水温为 13.2 0～ 2 2 .30℃时 ,不同规格刺参对贝类生物沉积物平均摄食率 (g/ g .h)依次为大 (0 .0 0 32 4 )、中 (0 .0 0 6 4 8)、小 (0 .0 0 95 9)。另外 ,不同规格刺参对贝类生物沉积物平均吸收率依大(7.32 % )、中 (13.4 9% )、小 (17.6 1% )。其中 ,温度在 15 .13℃时 ,大规格刺参的吸收率达最大 ,为15 .32 % ;当温度上升到 2 3.2 0℃ ,中、小两种规格刺参吸收率达最高 ,依次为中 (2 3.5 6 % )、小 (2 6 .4 9% )。刺参对沉积物中有机物的吸收与利用 ,降低了水底有机物的含量 ,可有效抑制水体有害物质的积累及产生。

The ingestion activity and the abosorption efficiency of A.japonicus on biodeposition under the different temperature

Experiment the ecosystem method with the normal regulations,we studied the ingestion activity and the abosorption efficiency of the different specification A.japonicus on biodeposition under the different temperature.we draw a result,The average ingestion rates of A.japonicus on biodepositon were 0.00324,0.00648 and 0.00959 respectively for macro-,meso-and micro of A.japonicus under the mean water temperature of 13.20-22.30℃.Another,the average absorption rates of A japonicus on biodepositon are 7.32%,13.49% and 17.61% for macro-,meso and micro-size A japonicus.Highest absorption rates of macro-size of A.japonicus were 15.32% at the temperature of 15.13℃.The highest absorption rates of meso-and micro-size of A.japonicus were 20.35% and 23.00% respectively under the temperature of 17.36℃.Absorption and utilization of biodeposition by A.japonicus reduced the content of organic matter in the bottom,and restrained the accumulation and production of deleterious substances.