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食物网络结构和暴露途径在米纳马塔湾的鱼类

Kenji Yoshino¹, Katsumasa Yamada², Gen Kanaya³

¹National Institute for Minamata Disease, 4058-18 Hama, Minamata, Kumamoto, 867-0008, Japan. KENJI_YOSHINO@env.go.jp.

Archives of environmental contamination and toxicology

|November 3, 2023

概括

微生物类植物为米纳马塔湾的食物网提供燃料,导致鱼类中的生物积累. 由微藻驱动的盆地食物链是海湾鱼类的主要暴露途径.

科学领域:

环境科学环境科学
海洋生物学海洋生物学
生态毒理学生态毒理学

背景情况:

海洋生态系统中的污染对野生动物和人类健康构成风险.
了解生物积累途径对于有效的环境管理至关重要.

研究的目的:

为了调查米纳马塔湾鱼类中的暴露途径.
确定不同食物来源在生物积累中的作用.
为了阐明明明拿马塔湾食物网的结构.

主要方法:

在鱼类和巨型中分析总含量 (THg).
稳定同位素分析 (δ13C和δ15N) 鱼类,巨型植物和有机颗粒物 (POM).
在米纳马塔湾四个季节的季节性采样.

主要成果:

米纳马塔湾的食物网主要由微型植物提供燃料.
鱼类和巨的总 (THg) 含量与δ13C值正相关.
捕食盆地甲类的鱼类表现出更高的THg水平.

结论:

由微植物为燃料的盆地食物链是米纳马塔湾鱼类中生物积累的主要途径.
饮食来源,特别是盆地甲类动物,显著影响鱼类对的暴露.
微生物本在这个生态系统中的 trofhic 转移中发挥着关键作用.

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