深圳市海域贝类腹泻性毒素的污染状况分析

Analysis of diarrhetic shellfish poisoning of bivalves in sea of Shenzhen

目的：了解深圳市海域贝类腹泻性毒素的污染状况。方法：于2007年8月～2008年7月间,逐月采集深圳市大亚湾、大鹏湾海域的贝类,分别采用酶联免疫测定法和小鼠生物法对其腹泻性贝类毒素含量进行分析。结果：两种方法一致性较好,其中酶联免疫测定法灵敏度较高,所调查的168份样品共有25份超出限量标准;腹泻性毒素存在一定的分布特征,夏秋季含量高,消化腺的含量高于贝肉,但两海域分布差异不明显。结论：深圳市大亚湾、大鹏湾海域的贝类存在一定程度的腹泻毒素污染,应加强对水产品的监测和毒素危害的宣传,确保食用安全。

Objective：To investigate the pollution of diarrhetic shellfish poisoning（DSP） of bivalves in sea of Shenzhen.Methods：Bivalves was collected from Daya bay and Dapeng bay of Shenzhen from August 2007 to July 2008.Enzyme-linked immunosorbent assay（ELISA） and mouse bioassay were conducted to investigate the level of DSP.Results：The sensitivity of ELISA was higher than MBA,but both had a better consistency.DSP was detected in 168 samples,and 25 samples were found DSP exceeded the threshold.The level of DSP in bivalves was higher in Summer and Autumn,and glands was higher than muscles,but there was no difference between the two places.Conclusion：There is a certain degree of DSP in bivalves of Daya bay and Dapeng bay of Shenzhen.It is necessary to detect DSP of fishery product in the future and to ensure the safety.