3种滤食性贝类对塔玛亚历山大藻的摄食研究  

Filter-feeding of three bivalves on Alexandrium tamarense

作　　者：赵俊梅[1] 方建光[2] 包振民[1] 张继红[2] 王巍[2] 蒋增杰[3] 

机构地区：[1]中国海洋大学生命学院,青岛266003 [2]中国水产科学研究院黄海水产研究所,青岛266071 [3]上海水产大学生命科学与技术学院,200090

出　　处：《海洋水产研究》2004年第4期17-22,共6页Marine Fisheries Research

基　　金：国家自然科学基金项目 (30 2 71 0 2 1 );国家重点基础研究发展规划项目 (G1 9990 1 2 0 1 2 )共同资助

摘　　要：20 0 3年 4月在实验室内采用静水法 ,研究了长牡蛎、紫贻贝、栉孔扇贝对塔玛亚历山大藻的清滤率 (CR)和摄食率 (IR) ,实验时间持续 3d ,水温 17℃。实验中每 1种贝都分别投喂 :(1)叉鞭金藻 (对照藻 ) ,(2 )叉鞭金藻 +塔玛亚历山大藻去藻过滤液 1.5L ,(3)叉鞭金藻 +塔玛亚历山大藻细胞。结果表明 ,塔玛亚历山大藻过滤液 ,对 3种贝的清滤率的无明显影响 (P >0 .0 5 ) ;3种贝对塔玛亚历山大藻和叉鞭金藻混合液的清滤率与对照组相比明显降低 (P <0 .0 1) ;而对塔玛亚历山大藻的摄食率和保留率 3d间无显著变化 ;实验期间 ,随时间的变化 ,牡蛎对混合液的清滤率变化最大 ,贻贝次之 ,扇贝则无明显著变化 (P >0 .0 5 ) ;如果以摄食率作为指标 ,贻贝在控制赤潮方面的潜力较大 ,值得今后进一步研究。The CRs (Clearance rate) of three bivalves: Crassotrea gigas, Mytilus edulis and Chlamys ferreri on toxic dinoflagellate Alexandrium tamarense were continuously measured at 17℃ under laboratory conditions in April 2003. Each species was fed with (1) a reference algal Dicrateia zhanjiangnsis Hu. var. sp., (2) mixture of D. zhan -jiangsis and 1.5 L cell-free A. tamarense cultural medium, (3) mixture of A. tamarense cells and D. zhan-jiangsis. The results indicated that the cell-free medium of A. tamarense culture had no evident effect on the CRs of the above bivalves (P>0.05). All bivalves showed remarkable decline of CR a in contrast with the con- trol (P<0.01) when fed with A. tamarense cells,the effluent extent of A .tamarense on the CR a of three bivalves was in the order of oyster>mussel>scallop, whereas RE and IR of A. tamarense in the mixture had no evident variety during the 3 days. Provided with the evidence from this study, esp. ingestion rate, mussel might be a potential candidate for controlling the A. tamarense red tide and further study in this aspect is suggested.

关 键 词：塔玛亚历山大藻 清滤率 摄食率 滤食性贝类 

分 类 号：S968.31[农业科学—水产养殖] X51[农业科学—水产科学]