School of the Environment, Laurentian University, Sudbury, ON P3E 2C6, Canada.
Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow 117 997, Russia.
Mar Pollut Bull. 2021 May;166:112180. doi: 10.1016/j.marpolbul.2021.112180. Epub 2021 Mar 10.
As evidenced from literature, exposure to non-lethal concentrations of dissolved copper (Cu) and copper nanoparticles (CuO NPs) promotes blue mussels susceptibility to various bacterial infections. We study whether pre-exposure (3.5 h) with CuSO (100 μg Cu L) and CuO NPs (1000 μg Cu L) will result in infection of M. edulis L. with pathogenic microalga Coccomyxa sp. under field conditions. In May - September 2019, cages were installed in the site Metis-sur-Mer, St. Lawrence Estuary (QC, Canada) where the native mussel population is known to be infected with the pathogen. Untreated and pre-exposed mussels were grown for up to 130 days. Only the mussels pre-exposed to copper were infected by Coccomyxa. This finding allows proposing that occurrences of Coccomyxa-infected mussels worldwide might have an association with water pollution with xenobiotics. Pre-exposure of caged mussels to copper, as a protocol monitoring for other infectious agents, can be recommended to test.
从文献中可以看出，暴露于非致死浓度的溶解铜 (Cu) 和铜纳米粒子 (CuO NPs) 会增加贻贝易受各种细菌感染的敏感性。我们研究了在野外条件下，贻贝预先暴露 (3.5 小时) 于 CuSO (100μg Cu L) 和 CuO NPs (1000μg Cu L) 是否会导致其感染致病性微藻 Coccomyxa sp.。在 2019 年 5 月至 9 月期间，在圣劳伦斯河口的梅蒂斯-苏梅尔 (QC，加拿大) 安装了笼子，在该地点，已知本地贻贝种群感染了病原体。未经处理和预先暴露的贻贝生长了长达 130 天。只有暴露于铜的贻贝被 Coccomyxa 感染。这一发现表明，全世界感染 Coccomyxa 的贻贝可能与污染水中的外来物质有关。建议对贻贝进行铜预暴露作为其他传染病原体监测的方案，以进行测试。
