罗源湾养殖区太平洋牡蛎及其海水环境中的粪大肠菌群周年变化

The annual variation of Fecal Coliform Bacteria in Crassostrea gigas in culture area of Luoyuan Bay and its seawater environment

于2008年2月至2009年2月每个月的大潮期对罗源湾内的两个主要太平洋牡蛎养殖区(下宫、迹头)海水环境中及太平洋牡蛎体内的粪大肠菌群(FCB)数量进行一周年的调查。调查结果表明:养殖区水体中的FCB数量在<20～2 400个/L之间,平均值为403个/L;海区太平洋牡蛎中的FCB数量在2.3×103～≥2.4×105个/kg之间,平均值为3.0×104个/kg。养殖区海水的达标率为92.3%,养殖区太平洋牡蛎的达标率均为26.1%。季节变化表现为:养殖区海水中FCB夏季>春季>秋季>冬季;太平洋牡蛎中FCB秋季>夏季>冬季>春季。罗源湾两个养殖区(下宫、迹头)的太平洋牡蛎体内的FCB污染较严重。应加强贝类产品,特别是生食贝类产品安全上市的管理,促进对陆源污染的治理。

Each month from February in 2008 to February in 2009, the number of Fecal Coliform Bacteria （FCB） in the two major Crassostrea gigas culture areas （ Xiagong and Jitou） of Luoyuan Bay and its seawater environment was carried out by an annual monitoring survey. The survey results showed that the number of FCB in seawater was between 〈20 to 2 400 cfu/L, the average value was 403 cfu/L; the number of FCB in Crassostrea gigas was between 2.3 ×10^3 to≥2.4 × 10^5 cfu/kg, the average value was 3.0 × 10^4 cfu/kg. The culture area seawater compliance rate was 92. 3%, the culture area Crassostrea gigas compliance rate was 26. 1%. Seasonal variation ： the number of FCB in seawater was summer 〉 spring 〉 autumn 〉 winter ; the num- ber of FCB in Crassostrea gigas was autumn 〉 summer 〉 winter 〉 spring. The FCB pollution was more serious in the two major Crassostrea gigas culture areas （Xiagong and Jitou） of Luoyuan Bay, so we should strengthen shellfish products, especially eaten raw shellfish safety listing and promote the governance of land - based sources of pollution.