低浓度悬浮颗粒物对缢蛏清滤率和吸收效率的影响  

Effects of low concentration of suspended particles on clearance rate and absorption efficiency of Sinonovacula constricta

作　　者：郭凯[1] 张晨[1] 赵文[1] 蔡志龙[1] 

机构地区：[1]大连海洋大学辽宁省水生生物学重点实验室,辽宁大连116023

出　　处：《大连海洋大学学报》2014年第4期369-372,共4页Journal of Dalian Ocean University

基　　金：国家"十二五"科技支撑计划项目(2011BAD13B03)

摘　　要：采用实验生态学方法，在室内模拟研究了不同浓度（50、60、80、160 mg/L）悬浮颗粒物对螠蛏Sinonovacula constricta （壳长为71.15 mm±3.66 mm）清滤率和吸收效率的影响。结果表明：悬浮颗粒物对螠蛏清滤率有显著影响（P〈0.05），当悬浮颗粒物浓度由低到高时，螠蛏的清滤率呈上升趋势，试验6 h时，悬浮物浓度为160 mg/L时个体清滤率达到最高，悬浮物浓度为50 mg/L时个体清滤率最低，随着试验时间的延长，相同悬浮物浓度下个体清滤率呈下降趋势，试验6 h时螠蛏清滤率要高于12-24 h；悬浮颗粒物对螠蛏的吸收率有极显著影响（P〈0.01），当悬浮颗粒物浓度由低到高时，螠蛏的吸收效率呈下降趋势，悬浮物浓度为50 mg/L时吸收效率最高，悬浮物浓度为160 mg/L时吸收效率最低。Effects of suspended particles concentration （50,60,80,and 160 mg/L） on clearance rate（Rc） and ab-sorption efficiency were investigated in Sinonovacula constricta with shell length of （71. 15 mm±3. 66 mm） by ex-perimental ecological method in a laboratory. The results showed that the clearance rate of S. constricta was in-creased with the suspended particle concentration increase（P〈0. 05）,the maximum value at the suspended particle concentration of 160 mg/L for 6 h, and the minimum value at a concentration of 50 mg/L. There was higher clear-ance rate of S. constricta at 6 h than at 12-24 h under the same concentration of suspended particles. The absorp-tion efficiency of S. constricta was decreased with increase in suspended particle concentration （P〈0. 01）,the mini-mum value at concentration of 160 mg/L, and the maximum value at concentration of 50 mg/L.

关 键 词：缢蛏 悬浮颗粒物 清滤率 吸收效率 

分 类 号：S968.3[农业科学—水产养殖]