全球渔业模式扩大了人类对甲基的暴露
Mi-Ling Li1,2,3, Colin P Thackray2, Vicky W Y Lam3
1School of Marine Science and Policy, College of Earth, Ocean and Environment, University of Delaware, Newark, DE 19711.
概括
热带渔业从海洋中提取最多的甲基 (MeHg),对健康构成重大风险. 大多数全球渔业社区可能超过安全的MeHg暴露水平,突出了污染和营养方面的担忧.
科学领域:
- 环境科学 环境科学
- 公共卫生 公共卫生
- 海洋生物学 海洋生物学
背景情况:
- 全球污染增加了海鲜中的甲基 (MeHg),甲基是一种神经毒剂.
- 海鲜消费带来风险 (MeHg) 和益处 (微量营养素).
- 海洋鱼类是一般人群接触MeHg的主要来源.
研究的目的:
- 调查从全球渔业中提取的MeHg的空间来源和数量.
- 分析渔业,MeHg积累和海鲜中的营养含量之间的关系.
主要方法:
- 使用了高分辨率的全球渔业捕捞数据.
- 采用经验约束的空间模型用于海鲜MeHg.
主要成果:
- 热带和亚热带渔业占提取的MeHg的70%以上.
- 低度海鲜含有最低的有益微量营养素 (,欧米茄-3).
- 84-99%的全球自给渔业种群可能超过MeHg暴露值.
结论:
- 工业渔业,特别是在热带地区,是全球 MeHg 公共卫生问题的驱动力.
- 海洋变暖可能会进一步耗尽海鲜中必需的微量营养素.
- 迫切需要控制污染和明智的捕捞选择,考虑到人类的营养.
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