生态与农村环境学报 ›› 2018, Vol. 34 ›› Issue (9): 857-864.doi: 10.11934/j.issn.1673-4831.2018.09.012

• 污染控制与修复 • 上一篇    

微塑料暴露对罗非鱼肌肉中磺胺甲唑残留的影响

张石云1, 宋超2,3,4, 张敬卫1, 陈泽秋1, 张聪2,3,4, 裘丽萍2,3,4, 陈家长1,2,3,4   

  1. 1. 南京农业大学无锡渔业学院, 江苏 无锡 214081;
    2. 中国水产科学研究院淡水渔业研究中心, 江苏 无锡 214081;
    3. 农业农村部水产品质量安全环境因子风险评估实验室(无锡), 江苏 无锡 214081;
    4. 农业农村部水产品质量安全控制重点实验室, 北京 100000
  • 收稿日期:2018-03-27 出版日期:2018-09-25 发布日期:2018-10-25
  • 通讯作者: 宋超,E-mail:263523702@qq.com;陈家长,E-mail:chenjz@ffrc.cn E-mail:263523702@qq.com;chenjz@ffrc.cn
  • 作者简介:张石云(1994-),男,江西修水人,硕士生,主要从事渔业生态环境和水产品质量安全方面的研究。E-mail:1061780174@qq.com
  • 基金资助:

    国家重点研发计划(2017YFC1600704);中国水产科学研究院基本科研业务费(2017JBFM09);农业农村部财政项目(GJFP2017009)

Effects of Micro-Plastics on Sulfamethoxazole (SMZ) Residues in Tilapia (Oreochromis niloticus) Muscle

ZHANG Shi-yun1, SONG Chao2,3,4, ZHANG Jing-wei1, CHEN Ze-qiu1, ZHANG Cong2,3,4, QIU Li-ping2,3,4, CHEN Jia-zhang1,2,3,4   

  1. 1. Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China;
    2. Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China;
    3. Laboratory of Quality and Safety Risk Assessment for Aquatic Products on Environmental Factors(Wuxi), Ministry of Agriculture and Rural Affairs, Wuxi 214081, China;
    4. Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of Agriculture and Rural Affairs, Beijing 100000, China
  • Received:2018-03-27 Online:2018-09-25 Published:2018-10-25

摘要:

微塑料(micro-plastics)是我国水环境中普遍存在的污染物,磺胺甲唑(sulfamethoxazole,SMZ)是水产养殖过程中常用的抗生素。然而,微塑料对罗非鱼(Oreochromis niloticus)肌肉中饲料拌喂SMZ残留的影响尚不明确。以环境浓度微塑料和SC/T 1084-2006《磺胺类药物水产养殖使用规范》为依据,设置含无、低和高3种浓度微塑料的水环境和含无、低、中和高剂量SMZ的饲料处理,通过养殖试验来研究微塑料对罗非鱼肌肉中SMZ残留的影响。前4周投喂含SMZ饲料,后4周投喂无SMZ饲料,试验4、6和8周时测定鱼肉中SMZ含量。4周时鱼肉中SMZ残留量测定结果表明,拌料投喂相同剂量SMZ饲料时,环境浓度微塑料能显著降低鱼肉中SMZ残留量。对4、6和8周时鱼肉中SMZ残留进行显著性分析发现:4周时,投喂相同剂量SMZ饲料条件下,微塑料暴露组鱼肉中SMZ残留量均显著低于无微塑料暴露组(P<0.05),然而微塑料浓度高低对鱼肉中SMZ残留量却无显著影响(P>0.05);6周时,仅中剂量SMZ饲料投喂条件下高微塑料与无微塑料组之间存在显著差异(P<0.05),其余剂量SMZ饲料投喂条件下有无微塑料组之间鱼肉中SMZ残留量均无显著差异(P>0.05);8周时,4种SMZ饲料投喂条件下有无微塑料组之间鱼肉中SMZ残留量均无显著差异(P>0.05),表明微塑料显著降低鱼肉中SMZ残留的能力取决于是否有一定量的SMZ投入。

关键词: 微塑料, 磺胺甲唑, 残留, 罗非鱼, 肌肉

Abstract:

Micro-plastics are widely distributed pollutants in China's water environment. Sulfamethoxazole (SMZ) is frequently-used as antibiotics in aquaculture. However, the effect of micro-plastics on SMZ residues in tilapia muscle is unclear. The micro-plastics and sulfamethoxazole dosage in fishponds have been manipulated based on the ambient concentration, and the application of sulfonamides in aquaculture specified by SC/T 1084-2006. Three concentrations including:zero (NP), low (LP) and high (HP) micro-plastics in fishponds; and four doses of SMZ[zero (NS), low (LS), medium (MS) and high (HS)] in forages were fabricated. For understanding the effect of micro-plastics on SMZ residues in tilapia (Oreochromis niloticus) muscle, an 8-weeks breeding experiment was conducted. Tilapia was fed in the first four weeks on a SMZ diet, followed by non SMZ diet for the next four weeks. SMZ content in fish meat was determined during the fourth, sixth and eighth weeks. The fourth week's results of SMZ residue in fish meat reveal that environmental micro-plastics could significantly reduce the residual value of SMZ in fish-meat. Single factor analysis of variance for the residual value of SMZ in fish meat at the 4th, 6th and 8th weeks, reveal that after the 4th week, all micro-plastic exposure groups at different SMZ dosage diets were significantly lower than those in the non-micro-plastic groups (P<0.05), and there was no significant differences between the micro-plastic concentrations (P>0.05). After the 6th week, only HP and NP groups with MS diet had significant differences (P<0.05), and no significant difference was found in other SMZ feed groups of different micro-plastic treatments (P>0.05). Similarly, the results from the 8th week, show that there was no significant difference in all groups fed on SMZ diet for the different micro-plastics treatments (P>0.05). In conclusion, the findings indicate that the effect of micro-plastics on sulfamethoxazole residues in fish-meat is limited by sulfamethoxazole dosage.

Key words: micro-plastics, sulfamethoxazole, residue, tilapia, muscle

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