摘要
在实验室模拟条件下构建养殖生态系统,设置4个镉暴露浓度(0、5、50、100μg/L),以探究镉在中华绒螯蟹体内不同可食部位(性腺、蟹身肉、蟹腿肉)的富集残留效应差异。结果表明:(1)镉在中华绒螯蟹体内的残留值为:性腺>蟹身肉>蟹腿肉,且性腺的占比均达85%以上。(2)各可食部位镉的残留量随暴露时间的增加而增加,且与水环境中镉的浓度呈正相关。同一可食部位,低、中和高浓度处理的富集系数与水环境中镉浓度呈负相关;同一浓度处理下,中华绒螯蟹体内不同可食部位的富集系数均为:性腺>蟹身肉>蟹腿肉。(3)镉在中华绒螯蟹体内的残留可能存在一定的性别差异。研究结果系统揭示水环境中镉在中华绒螯蟹体内不同可食部位的富集残留差异,为镉在中华绒螯蟹体内的分布、富集和迁移规律提供理论依据,为中国中华绒螯蟹的安全养殖和质量控制提供科学依据。
We constructed the aquaculture ecosystem under the laboratory simulation conditions,and set 4 cadmium exposure concentrations(0,5,50,100μg/L)to explore the differences of enrichment and residue effects of cadmium in different edible parts(gonad,body meat and leg meat)of Eriocheir sinensis.The results showed that:(1)the residual value of cadmium in Eriocheir sinensis was gonad>body meat>leg meat,and the proportion of gonads was more than 85%;(2)the residual amounts of cadmium in each edible part increased with the exposure time,and it was positively correlated with the cadmium concentration in the water environment;in the same edible part,the enrichment coefficient of low,medium and high concentration groups was negatively correlated with the cadmium concentration in the water environment;under the same concentration group,the enrichment coefficients of different edible parts were gonads>body meat>leg meat;(3)the residues of cadmium in Eriocheir sinensis might have gender differences.The results systematically reveal the differences of cadmium enrichment in different edible parts of Eriocheir sinensis in water environment,and provide a basis for studying the distribution,enrichment and migration of cadmium in Eriocheir sinensis,and for the safe breeding and quality control.
作者
董欣悦
宋超
张石云
张聪
邹剑敏
裘丽萍
陈家长
Dong Xinyue;Song Chao;Zhang Shiyun;Zhang Cong;Zou Jianmin;Qiu Liping;Chen Jiazhang(College of Fishery,Nanjing Agricultural University,Wuxi Jiangsu 214081;Freshwater Fisheries Research Center,ChineseAcademy of Fishery Sciences,Wuxi Jiangsu 214081;Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Environmental Factors (Wuxi),Ministry of Agriculture and Rural Affairs,Wuxi Jiangsu 214081;Key Laboratory of AquaticProducts Quality and Safety Control,Ministry of Agriculture and Rural Affairs,Beijing 100000;Tianning District AgriculturalBureau,Changzhou Jiangsu 213000)
出处
《中国农学通报》
2019年第21期141-147,共7页
Chinese Agricultural Science Bulletin
基金
中国水产科学研究院基本科研业务费重点项目“南方地区稻蟹综合种养模式下典型危害物污染特征、归趋与富集效应及防控技术研究”(2018HY-ZD0605)
国家农产品质量安全监管经费项目“国家水产品质量安全风险评估”(GJFP2018009)
关键词
中华绒螯蟹
镉
富集
可食部位
性腺
蟹身肉
蟹腿肉
Eriocheir sinensis
cadmium
enrichment
edible parts
gonad
body meat
leg meat
