Abstract
The accumulation of polybrominated diphenyl ethers (PBDEs) and benzotriazole UV stabilizers (BZT-UVs) were examined in the hadal amphipod Hirondellea gigas caught from a near-land trench off the Japan island (9200 m). H. gigas were collected from two distinct sites: one is located at the outlet of submarine canyons directly connected to land and the other is apart from the outlet and geographically isolated from the first site. The level of the PBDEs in H. gigas at the canyon outlet (mean 219 ng/g lipid weight (l.w.)) was significantly higher than that in the isolated site (mean 42 ng/g l.w.) and BZT-UVs were only detected within the first site (mean 1.5 ng/g wet weight). In addition to vertical transport from the surface water, near-land trenches associated with submarine canyons and troughs may have more complex influx of contaminants through horizontal transportation from the land, resulting in more severe contamination.
| Originalsprog | Engelsk |
|---|---|
| Artikelnummer | 107054 |
| Tidsskrift | iScience |
| Vol/bind | 26 |
| Udgave nummer | 7 |
| Antal sider | 15 |
| ISSN | 2589-0042 |
| DOI | |
| Status | Udgivet - 21. jul. 2023 |
Bibliografisk note
Funding Information:The authors thank the captains and crew of the R/V Yokosuka, and A. Yabuki and M. Tsuchiya (JAMSTEC) for their efforts to make the research cruise possible. The authors also thank Y. Inaba, J. Yamamoto, and M. Suzuki (IDEA) for constructive comments, A. Jamieson (University of Western Australia) for providing raw data of PBDEs of H. gigas in the Marina Trench, the anonymous reviewers for their comments that improved the manuscript, and N. Singh for proofreading. This study was partially funded by the Japan Society for the Promotion of Science (JSPS) KAKENHI grant number 19H04262 .
Funding Information:
The authors thank the captains and crew of the R/V Yokosuka, and A. Yabuki and M. Tsuchiya (JAMSTEC) for their efforts to make the research cruise possible. The authors also thank Y. Inaba, J. Yamamoto, and M. Suzuki (IDEA) for constructive comments, A. Jamieson (University of Western Australia) for providing raw data of PBDEs of H. gigas in the Marina Trench, the anonymous reviewers for their comments that improved the manuscript, and N. Singh for proofreading. This study was partially funded by the Japan Society for the Promotion of Science (JSPS) KAKENHI grant number 19H04262. R.N.: Conceptualization, Methodology, Writing – original draft, Visualization, Funding acquisition. T.I.: Investigation, Writing-review & editing. K.O.: Methodology, Investigation, Writing-review & editing. H.R.: Investigation, Writing – review & editing. The authors declare no competing interests. We support inclusive, diverse, and equitable conduct of research.
Publisher Copyright:
© 2023 The Author(s)