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不同的饮食成分导致了北大西洋的杀手的遗传和新兴污染物度的显著差异

Anaïs Remili¹, Rune Dietz², Christian Sonne²

¹Department of Natural Resource Sciences, McGill University, Sainte-Anne-de-Bellevue, Quebec H9X 3V9, Canada.

Environmental science & technology

|October 11, 2023

概括

持久性有机污染物 (POPs) 在杀手的食物链中生物放大. 西北大西洋杀手由于饮食而不是环境而导致了较高的POPs,强调了健康风险和废物管理需求.

科学领域:

环境科学环境科学
海洋生物学海洋生物学
毒理学毒理学毒理学

背景情况:

脂友性持久性有机污染物 (POPs) 在食物链中生物放大.
杀手鱼 (Orcinus orca) 摄入海洋哺乳动物会积累更高的POP度.
饮食研究正在使用诸如定量脂肪酸特征分析 (QFASA) 等技术取得进展.

研究的目的:

评估北大西洋 (NA) 虎中遗留和新出现的POP度.
调查NA鱼种群内和之间POP水平的变化.
为了确定饮食与环境变化的作用在POP积累中.

主要方法:

在NA的162只杀手中分析了POP度.
使用定量脂肪酸特征分析 (QFASA) 来推断饮食成分.
污染物水平与饮食数据的统计相关性.

主要成果:

与东部NA同类相比,在西部NA杀手中发现了比较高的PCB,有机农药和阻燃剂的平均水平.
平均PCB含量在西部NA的脂质重量约100mg/kg至东部NA的脂质重量约10mg/kg之间.
POP变化与饮食组成有很强的相关性,表明饮食是主要的驱动因素,而不是环境污染物水平.

结论:

饮食成分是影响杀手污染物相关健康风险的关键因素.
需要采取紧急措施来处理污染了POP的废物,并防止进一步污染环境.
缓解新污染物释放对于杀手的健康至关重要.

关键词:

鱼 (Orcinus orcaca) 是一个鱼.在PCB中,PCB是指PCB.生物放大生物放大这就是blubber的意思.饮食的专业化饮食的专业化危害健康的风险海洋哺乳动物海洋哺乳动物最顶级的捕食者掠食者

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