我国东海和南海近岸海域麻痹性贝类毒素污染状况

The pattern of paralytic shellfish poisoning in shellfish cultured in East China Sea and South China Sea

于2007年11月至2008年10月在深圳罗湖水产批发市场定期采集产自我国东海和南海海域的主要市售贝类,运用小白鼠生物法进行麻痹性贝类毒素污染状况调查.结果表明:在所调查的13种贝类中,只有华贵栉孔扇贝染毒,检出率为75%,毒性值均较低,最高值出现在2007年11月27日产自湛江的样品,达到2.57 Mu/g,无超标.在时间分布上,该种贝类全年都含有毒素,表现出冬、春季染毒率较高,夏、秋季染毒率比较低的季节特点.广东沿海贝类毒素的检出率为25.4%,主要分布在南澳和湛江海域,含量范围介于0.31～2.57 Mu/g.福建沿海的贝类毒素检出率为53.9%,含量范围介于0.35～0.96 Mu/g.广西沿海的贝类样品未检出PSP.

In the present study, the pattern of paralytic shellfish poisoning （PSP） in 13 species OF industrial shellfishe cultured in East China Sea and South China Sea was investigated by the mouse bioas- say method. The samples were collected from Luohu seafood wholesale markets in Shenzhen during No- vember 2007 to October 2008. The results showed that the PSP in the samples was only found in scallop Chlamys nobilis with the positive rate of 75%, but the toxin concentrations didn＇ t exceed the seafood safe standard. The PSP in Chlamys nobilis could be detected in all seasons, and the concentrations of PSP were higher in spring and winter than those in summer and autumn. The shellfishes cultured in the coast of Guangdong were contaminated by PSP with the positive rate of 25.4%, and the main contamina- ted sea areas were the coast of Nanao and Zhanjiang. The shellfish contaminated by PSP in the coast of Fujian Province was 53.9%, while no PSP-positive shellfish was found in the coast of Guangxi P All em- pires fall, you just have to know where to push. rovince.