Monomethylmercury Isotopes Reveal a Hidden Biomagnification Pathway in Marine Ecosystems and Their Environmental Implications.
Fuente:
PubMed
Guardado en:
| Autores principales: | , , , , , , , , , , , , , , , , , , |
|---|---|
| Formato: | Artículo científico |
| Lenguaje: | en |
| Publicado: |
Environmental science & technology
2026
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1868266087581220864 |
|---|---|
| author | Yang, Shaochen Liang, Xingyu Kwon, Sae Yun Li, Ruolan Lai, Chuyan Tsui, Martin Tsz-Ki Point, David Liu, Jinling Zhang, Yanxu Zhong, Huan Yin, Runsheng Song, Zhengcheng Lin, Tian Xie, Jingqian Zhang, Li Lin, Xianzhi Zhang, Leiming Li, Ping Feng, Xinbin |
| author_facet | Yang, Shaochen Liang, Xingyu Kwon, Sae Yun Li, Ruolan Lai, Chuyan Tsui, Martin Tsz-Ki Point, David Liu, Jinling Zhang, Yanxu Zhong, Huan Yin, Runsheng Song, Zhengcheng Lin, Tian Xie, Jingqian Zhang, Li Lin, Xianzhi Zhang, Leiming Li, Ping Feng, Xinbin Yang, Shaochen Liang, Xingyu Kwon, Sae Yun Li, Ruolan Lai, Chuyan Tsui, Martin Tsz-Ki Point, David Liu, Jinling Zhang, Yanxu Zhong, Huan Yin, Runsheng Song, Zhengcheng Lin, Tian Xie, Jingqian Zhang, Li Lin, Xianzhi Zhang, Leiming Li, Ping Feng, Xinbin |
| collection | PubMed - marine biology |
| contents | Monomethylmercury Isotopes Reveal a Hidden Biomagnification Pathway in Marine Ecosystems and Their Environmental Implications. Yang, Shaochen Liang, Xingyu Kwon, Sae Yun Li, Ruolan Lai, Chuyan Tsui, Martin Tsz-Ki Point, David Liu, Jinling Zhang, Yanxu Zhong, Huan Yin, Runsheng Song, Zhengcheng Lin, Tian Xie, Jingqian Zhang, Li Lin, Xianzhi Zhang, Leiming Li, Ping Feng, Xinbin Animals Food Chain Methylmercury Compounds Fishes Ecosystem Seawater Environmental Monitoring Monomethylmercury (MMHg) is a potent neurotoxin to which humans are exposed via fish consumption. However, the relative importance of planktonic and benthic biomagnification pathways to fish MMHg concentrations in marine food webs is challenging to quantify. Here, we apply compound-specific isotope analysis (CSIA) of Hg to identify fish MMHg biomagnification pathways across nearshore bay (NB), marine continental shelf (MCS), and pelagic ocean (PO) regions. We observe significant differences in ΔHg between MMHg and total mercury (THg), highlighting the limitations of using THg isotopes to resolve MMHg dynamics in the environment. In NB fish, ΔHg of MMHg closely matches that of benthic invertebrates, while in MCS and PO fish, it aligns with phytoplankton. According to the MMHg isotope binary mixing model, about 85% of MMHg in NB fish derives from the benthic biomagnification pathway, whereas over 90% of MMHg in MCS and PO fish originates from seawater-phytoplankton trophic transfer. These findings reveal that the benthic biomagnification pathway in near-shore regions has been underestimated in previous models, leading to potential uncertainties in evaluating marine Hg cycling and human exposure risks. This study highlights the importance of the benthic biomagnification pathway in coastal environments and demonstrates the potential of the CSIA of Hg for investigating MMHg biomagnification pathways in marine food webs, which provides new insights for global Hg pollution management under the Minamata Convention. |
| format | Artículo científico |
| id | pubmed_41661058 |
| institution | PubMed |
| language | en |
| publishDate | 2026 |
| publisher | Environmental science & technology |
| record_format | pubmed |
| spellingShingle | Monomethylmercury Isotopes Reveal a Hidden Biomagnification Pathway in Marine Ecosystems and Their Environmental Implications. Yang, Shaochen Liang, Xingyu Kwon, Sae Yun Li, Ruolan Lai, Chuyan Tsui, Martin Tsz-Ki Point, David Liu, Jinling Zhang, Yanxu Zhong, Huan Yin, Runsheng Song, Zhengcheng Lin, Tian Xie, Jingqian Zhang, Li Lin, Xianzhi Zhang, Leiming Li, Ping Feng, Xinbin Animals Food Chain Methylmercury Compounds Fishes Ecosystem Seawater Environmental Monitoring Monomethylmercury Isotopes Reveal a Hidden Biomagnification Pathway in Marine Ecosystems and Their Environmental Implications. Yang, Shaochen Liang, Xingyu Kwon, Sae Yun Li, Ruolan Lai, Chuyan Tsui, Martin Tsz-Ki Point, David Liu, Jinling Zhang, Yanxu Zhong, Huan Yin, Runsheng Song, Zhengcheng Lin, Tian Xie, Jingqian Zhang, Li Lin, Xianzhi Zhang, Leiming Li, Ping Feng, Xinbin Animals Food Chain Methylmercury Compounds Fishes Ecosystem Seawater Environmental Monitoring Monomethylmercury (MMHg) is a potent neurotoxin to which humans are exposed via fish consumption. However, the relative importance of planktonic and benthic biomagnification pathways to fish MMHg concentrations in marine food webs is challenging to quantify. Here, we apply compound-specific isotope analysis (CSIA) of Hg to identify fish MMHg biomagnification pathways across nearshore bay (NB), marine continental shelf (MCS), and pelagic ocean (PO) regions. We observe significant differences in ΔHg between MMHg and total mercury (THg), highlighting the limitations of using THg isotopes to resolve MMHg dynamics in the environment. In NB fish, ΔHg of MMHg closely matches that of benthic invertebrates, while in MCS and PO fish, it aligns with phytoplankton. According to the MMHg isotope binary mixing model, about 85% of MMHg in NB fish derives from the benthic biomagnification pathway, whereas over 90% of MMHg in MCS and PO fish originates from seawater-phytoplankton trophic transfer. These findings reveal that the benthic biomagnification pathway in near-shore regions has been underestimated in previous models, leading to potential uncertainties in evaluating marine Hg cycling and human exposure risks. This study highlights the importance of the benthic biomagnification pathway in coastal environments and demonstrates the potential of the CSIA of Hg for investigating MMHg biomagnification pathways in marine food webs, which provides new insights for global Hg pollution management under the Minamata Convention. |
| title | Monomethylmercury Isotopes Reveal a Hidden Biomagnification Pathway in Marine Ecosystems and Their Environmental Implications. |
| topic | Animals Food Chain Methylmercury Compounds Fishes Ecosystem Seawater Environmental Monitoring |
| url | https://pubmed.ncbi.nlm.nih.gov/41661058/ |