| 菲律宾蛤仔对镉、铜暴露的蓄积作用及其抗氧化酶系统的响应研究 |
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| 引用本文： | 张林宝,吴惠丰,孙伟,蔡文贵,贾晓平.菲律宾蛤仔对镉、铜暴露的蓄积作用及其抗氧化酶系统的响应研究[J].南方水产,2013(5):64-70. |
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| 作者姓名： | 张林宝 吴惠丰 孙伟 蔡文贵 贾晓平 |
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| 作者单位： | [1]中国水产科学研究院南海水产研究所,农业部南海渔业资源开发利用重点实验室,广东省渔业生态环境晕点实验卒,广东广州510300 [2]中国科学院烟台海岸带研究所,海岸带环境过程重点实验室,山东烟台264003 |
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| 基金项目： | 中央级公益性科研院所基本科研业务费专项资金（中国水产科学研究院南海水产研究所）资助项目（2012TS28） |
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| 摘 要： | 研究了镉（Cd）、铜（Cu）2种重金属单一暴露下菲律宾蛤仔（Ruditapes philippinarum）肝胰腺和鳃组织内的重金属富集特征和抗氧化酶活力变化特点。结果表明，蛤仔肝胰腺与鳃对Cd、Cu的富集量随重金属浓度与暴靠时间的增加而增火，具有明显的浓度效应与时间效应；菲律宾蛤仔对Cd的富集能力高于Cu，H．肝胰腺中审盖属的蓄积量高于鳃；蛤仔肝胰腺和鳃组织中超氧化物歧化酶（SOD）、谷胱廿肽过氧化物酶（（；Px）和谷胱竹肽硫转移酶（CST）活力在暴露的某些时段被显著诱导（P〈0．05），似随暴露时问延长或重金属浓度增加，SODf11GST活力则被显著抑制（P〈O．05），而CPx活力随暴露时问延K逐渐恢复至对照组水平、菲律宾蛤仔肝胰腺和鳃2种组织中SOD和GST的活性变化可作为海洋Cu^2＋Cd^2＋钙染的牛物标志物．
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| 关 键 词： | 菲律宾蛤仔 Cd^2＋ Cu^2＋ 牛物蓄积 抗氧化酶 |
Bioaccumulation and antioxidant responses in Manila clam （Ruditapes philippinarum） under cadmium and copper exposure |
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| ZHANG LinbaoI,WU Huifeng,SUN Wei,CAI WeiguiI,JIA Xiaoping.Bioaccumulation and antioxidant responses in Manila clam （Ruditapes philippinarum） under cadmium and copper exposure[J].South China Fisheries Science,2013(5):64-70. |
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| Authors: | ZHANG LinbaoI WU Huifeng SUN Wei CAI WeiguiI JIA Xiaoping |
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| Institution: | l ( I. Key Lab. of South China Sea Fishery Resources Exploitation ＆ Utilization, Ministry of Agriculture ; Key Lab. of Fistu, ry Ecology Environment, Guangdong Province; South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China ; 2. Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China ) |
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| Abstract: | We studied the bioaccumulation characteristics and antioxidant enzymes activity changes of Manila clam, Ruditapes philip- pinarum under the exposure to cadmium （Cd） and copper （Cu）. The bioconcentrations of Cd and Cu in gill and hepatopancreas of R. philippinarum showed obvious time and dose dependent responses. The clam showed higher bioaccumulation ability on Cd than that of Cu, and the heavy metal concentrations in hepatopancreas were greater than those in gill. Additionally, the acfivilies of superoxide dismutase （SOD）, glutathione peroxidases （GPx） and glutathione stransferases （GST） were significantly promoted in hepatopancreas and gill of R. philippinarum at difl＇erent concentrations and time intervals （ P 〈 0. 05 ） , while the activities of SOD and GST were sig- nificantly inhibited at high concentrations of Cd and Cu （P 〈 0. 05）. The activities of GPx recovered to the original level with the time progressed. Taken together, the changes of SOD and GST activities in hepatopancreas and gills of R. philippinarum could be consid- ered as potential biomarkers for copper and cadmium contamination in the marine environment. |
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| Keywords: | Ruditapes philippinarum copper ion cadmium ion bioaccumulation antioxidant enzymes |
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