Seasonal variation in the bioaccumulation of potentially toxic metals in the tissues of Astrangia poculata in the northeastern United States
Seasonal variation in the bioaccumulation of potentially toxic metals in the tissues of Astrangia poculata in the northeastern United States
复制标题
美国东北部 Astrangia poculata 组织中潜在有毒金属生物累积的季节性变化
DOI：
10.1016/j.marpolbul.2021.113180
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发表时间：
2022
影响因子：
5.8
通讯作者：
Rodrigues, Lisa J.
中科院分区：
文献类型：
--
作者：
Trumbauer, Wolfgang;Grace, Sean P.;Rodrigues, Lisa J.
海藻栖息在美国东北部人口稠密的海岸附近，可能会暴露在高浓度的污染物中。没有研究评估温带珊瑚中的重金属浓度，尽管它们接近人类活动。我们在一年中收集了四次菌落，并对珊瑚组织进行了砷、镉、铬、铅和锌的分析。与其他季节相比，夏季除As外的大多数重金属含量都降低了1.5-3.3倍。铅、砷和镉的浓度比纳拉甘西特湾其他底栖物种的浓度高出三个数量级，这表明这是一种新的污染。藻类更容易积聚和/或栖息在海湾受污染较严重的地区。锌、铅和砷的浓度与居住在人类活动污染地点的热带珊瑚相似。虽然生理上的影响尚不清楚，但这一群体的健康状况并不乐观。它对重金属污染的耐受性可能比大多数硬脊椎动物更高，这使它成为未来研究的有趣候选者。
Astrangia poculatainhabits coasts near dense human populations in the northeastern United States and may be exposed to elevated pollutants. No studies have assessed heavy metal concentration in temperate corals despite their proximity to anthropogenic activity. We collected colonies four times in one year and analyzed coral tissue for As, Cd, Cr, Pb, and Zn. Most heavy metals except for As were 1.5–3.3 times lower in summer compared to other seasons. Pb, As, and Cd were three orders of magnitude higher than concentrations for other Narragansett Bay benthic species, suggesting thatA. poculatabioaccumulates more readily and/or inhabits more contaminated areas of the Bay. Zn, Pb, and As had similar concentrations to tropical corals inhabiting anthropogenically polluted sites. While physiological impacts are unknown, this population ofA. poculatamay have a higher tolerance for heavy metal pollution than most scleractinians, making it an interesting candidate for future studies.