土壤摄入:在野生草食动物中暴露于有毒元素的重要污染途径
Andrea B Webster1, Nigel C Bennett1, Marcus Clauss2
1Mammal Research Institute, Faculty of Natural and Agricultural Sciences, University of Pretoria, Cnr Lynwood and University Roads, 0083, South Africa.
The Science of the total environment
|December 20, 2025
概括
放牧和挖掘的食草动物摄入更多的土壤,导致更高的有毒元素摄入量. 牙冠高度 (hypsodonty) 可以预测物种对土壤污染的脆弱性.
科学领域:
- 环境科学 环境科学
- 生态毒理学 生态毒理学
- 动物学 动物学
背景情况:
- 人类活动在全球范围内提高了土壤污染和有毒元素度.
- 野生动物食用土壤对动物健康和人类动物蛋白质消费者构成风险.
- 大型草食动物通过土壤摄入对有毒元素的特定物种脆弱性仍未得到充分研究.
研究的目的:
- 为了测试地面食的食草动物是否摄入的土壤比浏览物种多.
- 为了评估非洲草食动物的有毒元素摄入量和同化.
- 为了确定物种对土壤有毒元素的脆弱性的可靠代理.
主要方法:
- 研究了16种非洲草食动物物种的土壤摄入.
- 通过土壤摄入量化的有毒元素 (,,锡,,,,) 的摄入.
- 分析了便和毛皮元素的度.
- 在类动物中,土壤摄入率与hypsodonty (牙冠高度) 相相关.
主要成果:
- 在放牧 (蓝色野兽,白犀牛,水牛) 和化石 (白猪,) 物种中,土壤摄入量最高.
- 这些物种对特定有毒元素的总摄入量高出20-60%.
- 在便和毛皮中元素度升高证实了它们被体内组织同化.
- 类动物的土壤摄入率与hypsodonty相关.
结论:
- 在地面上食的草食动物面临着更高的毒素元素暴露的土壤摄入.
- 低体作为一种有用的代理物来识别易受土壤有毒元素影响的物种.
- 开发的非侵入性框架有助于监测野生动物暴露,并支持污染地区的保护工作.
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