两个海物种的生理和生育能力与塑料添加剂的暴露有关
S N Veríssimo1, V H Paiva1, S C Cunha2
1University of Coimbra, MARE - Marine and Environmental Sciences Centre/ARNET - Aquatic Research Network, Department of Life Sciences, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal.
The Science of the total environment
|July 31, 2024
概括
像PBDE和MeO-BDE这样的塑料添加剂会伤害海,影响它们的神经功能,免疫系统和氧化平衡. 海鸟积累这些化合物,在物种和息地之间观察到不同的影响.
科学领域:
- 环境科学 环境科学
- 生态毒理学 生态毒理学
- 海洋生物学 海洋生物学
背景情况:
- 聚二乙烯 (PBDE) 是受限制的阻燃剂,仍然存在于环境中.
- 来自PBDE的甲氧化PBDE (MeO-BDE) 具有类似的毒理风险.
- 由于其生态和行为,猫容易受到塑料添加剂的影响.
研究的目的:
- 评估海组织中PBDE和MeO-BDE的积累情况.
- 评估这些污染物对海的生理和生殖影响.
- 为了比较不同息地的黄腿 (YLG) 和奥杜恩 (AG) 之间的污染负担和影响.
主要方法:
- 在海组织中分析PBDE和MeO-BDE度.
- 评估包括神经功能,免疫反应和氧化应激在内的生理参数.
- 评估生殖参数,例如精子计数.
- 在物种 (YLG,AG) 和息地 (自然与城市) 之间进行比较.
主要成果:
- 成年奥德温海 (AG) 在自然息地积累了更多的MeO-BDE,而黄腿海 (YLG) 在城市地区的PBDE水平更高.
- 来自自然息地的YLG比AG的PBDE度更高.
- 观察到的生理影响包括神经功能和免疫系统抑制 (较高的MeO-BDE),潜在的基因毒性 (YLG小,较高的MeO-BDE),以及抗氧化防御和免疫系统受损 (YLG成年人,高的PBDE).
- 在具有高MeO-BDE的自然息地中的YLG小中观察到氧化应激和炎症.
- 生育率参数显示精子数量存在显著差异,但建议存在潜在的补偿机制.
结论:
- 与塑料相关的化合物,特别是MeO-BDE,广泛存在,对海种群产生有害影响.
- 污染物的积累和影响因海物种,年龄和环境环境 (息地) 而异.
- 关键影响包括神经毒性,免疫毒性,氧化压力和潜在的基因毒性,突出了塑料污染对野生鸟类种群的风险.
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