污染对鱼捕 (Macrochelys temminckii) 的物种内变异
David Rosenbaum1, Carmen G Montaña2, Yanli Zhang1
1Arthur Temple College of Forestry and Agriculture, Stephen F. Austin State University, Nacogdoches, Texas, USA.
Environmental toxicology and chemistry
|May 28, 2024
概括
来自德克萨斯州的鱼捕中的总 (THg) 超过了人类消费的安全水平. 指甲组织可以作为肌肉组织中含量的可靠指标.
科学领域:
- 环境毒理学环境毒理学
- 野生动物生态生态学
- 保护生物学 保护生物学
背景情况:
- 鱼 (Macrochelys temminckii) 是一个令人担忧的物种,被提议将其列入危物种法.
- 污染是影响水生生态系统和人类健康的重大环境问题.
- 了解M.temminckii等顶级捕食者的生物积累对于生态和人类风险评估至关重要.
研究的目的:
- 为了评估来自德克萨斯东部的M.temminckii的各种组织中的总 (THg) 度.
- 为了确定骨肌肉,尾巴剪贴和指甲组织中含量之间的相关性.
- 评估生态因素对THg度的影响,并评估对人类消费者的潜在风险.
主要方法:
- 从93M. temminckii.的骨肌肉,尾部剪贴和指甲组织中分析总度 (THg).
- 在美国德克萨斯州东部的14个水体中进行了采样.
- 统计分析以评估组织之间的相关性和生态因素的影响,如大小和地点.
主要成果:
- 平均THg度在肌肉中为1.16±0.08μg/g,在指甲 (干重) 中为4.21±0.24μg/g.
- THg度在很大程度上取决于采样地点.
- 指甲THg度与肌肉度有很强的相关性 (R2 = 0.56,p < 0.001).
- 身体尺寸对THg的影响因地点而异,使其成为不同地点不可靠的预测指标.
结论:
- 根据美国环保署的指导方针,德克萨斯州东部鱼捕的含量足够高,对人类健康构成潜在风险.
- 指甲组织作为一个可靠的,非致命的指标来评估M. temminckii肌肉中的负担.
- 特定地点的因素在积中起着至关重要的作用,突显了局部环境监测的必要性.
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