Exposure to legacy and alternative flame retardants in two harbor seal populations and the association with blubber fatty acid profiles
Copyright © 2023 Elsevier B.V. All rights reserved..
Flame retardants (FRs) are ubiquitously present in various environmental compartments due to widespread application. However, there have been few reports on the alternative FRs in harbor seals, and their relationship with fatty acid (FA) profiles have largely been overlooked. Here, we investigated the levels of legacy and alternative FRs and FA profiles in the blubber of harbor seals from the coasts of South Sweden (2009-2016) and Northeastern US (NE US) (1999-2010). We observed different proportions of mono- and poly-unsaturated FAs (MUFAs and PUFAs) between the two populations, which may reflect variations in the diet. Significantly higher concentrations of ΣPBDE were also observed in harbor seals from US compared to those from Sweden, both dominated by BDE 47. By comparison, the levels of alternative FRs, noticeably HBBZ and PBEB were much lower compared to those of PBDEs. Moreover, we found a positive correlation between BDE 99 and Σn-6/Σn-3 PUFA in harbor seals from Sweden. In addition, BDE 153 and BDE 154 were positively correlated with ΣUFA/ΣSFA in seals from Sweden and US, respectively. Our results imply the influence of diet in FA profiles and FR concentrations in top predators, as well as the importance of blubber FA characteristics in indicating FR exposure. Further investigations are required to assess the risk of exposure in these harbor seals, as well as to elucidate the underlying mechanisms associating FA profiles with FR exposure.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2023 |
|---|---|
| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:874 |
|---|---|
| Enthalten in: |
The Science of the total environment - 874(2023) vom: 20. Mai, Seite 162170 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Zhang, Long [VerfasserIn] |
|---|
| Links: |
|---|
| Anmerkungen: |
Date Completed 29.03.2023 Date Revised 29.03.2023 published: Print-Electronic Citation Status MEDLINE |
|---|
| doi: |
10.1016/j.scitotenv.2023.162170 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM353642037 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM353642037 | ||
| 003 | DE-627 | ||
| 005 | 20231226060458.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231226s2023 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1016/j.scitotenv.2023.162170 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1178.xml |
| 035 | |a (DE-627)NLM353642037 | ||
| 035 | |a (NLM)36858217 | ||
| 035 | |a (PII)S0048-9697(23)00786-6 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Zhang, Long |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Exposure to legacy and alternative flame retardants in two harbor seal populations and the association with blubber fatty acid profiles |
| 264 | 1 | |c 2023 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Completed 29.03.2023 | ||
| 500 | |a Date Revised 29.03.2023 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Copyright © 2023 Elsevier B.V. All rights reserved. | ||
| 520 | |a Flame retardants (FRs) are ubiquitously present in various environmental compartments due to widespread application. However, there have been few reports on the alternative FRs in harbor seals, and their relationship with fatty acid (FA) profiles have largely been overlooked. Here, we investigated the levels of legacy and alternative FRs and FA profiles in the blubber of harbor seals from the coasts of South Sweden (2009-2016) and Northeastern US (NE US) (1999-2010). We observed different proportions of mono- and poly-unsaturated FAs (MUFAs and PUFAs) between the two populations, which may reflect variations in the diet. Significantly higher concentrations of ΣPBDE were also observed in harbor seals from US compared to those from Sweden, both dominated by BDE 47. By comparison, the levels of alternative FRs, noticeably HBBZ and PBEB were much lower compared to those of PBDEs. Moreover, we found a positive correlation between BDE 99 and Σn-6/Σn-3 PUFA in harbor seals from Sweden. In addition, BDE 153 and BDE 154 were positively correlated with ΣUFA/ΣSFA in seals from Sweden and US, respectively. Our results imply the influence of diet in FA profiles and FR concentrations in top predators, as well as the importance of blubber FA characteristics in indicating FR exposure. Further investigations are required to assess the risk of exposure in these harbor seals, as well as to elucidate the underlying mechanisms associating FA profiles with FR exposure | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Brominated and chlorinated flame retardants | |
| 650 | 4 | |a Ecotoxicology | |
| 650 | 4 | |a Lipid metabolism | |
| 650 | 4 | |a Marine mammals | |
| 650 | 4 | |a Metabolism disrupting chemicals | |
| 650 | 7 | |a Fatty Acids |2 NLM | |
| 650 | 7 | |a Flame Retardants |2 NLM | |
| 650 | 7 | |a Fatty Acids, Unsaturated |2 NLM | |
| 650 | 7 | |a Halogenated Diphenyl Ethers |2 NLM | |
| 700 | 1 | |a Zheng, Xiaoshi |e verfasserin |4 aut | |
| 700 | 1 | |a Shaw, Susan |e verfasserin |4 aut | |
| 700 | 1 | |a Berger, Michelle |e verfasserin |4 aut | |
| 700 | 1 | |a Roos, Anna |e verfasserin |4 aut | |
| 700 | 1 | |a Bäcklin, Britt-Marie |e verfasserin |4 aut | |
| 700 | 1 | |a Sun, Jiachen |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Xiaotu |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Da |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t The Science of the total environment |d 1972 |g 874(2023) vom: 20. Mai, Seite 162170 |w (DE-627)NLM000215562 |x 1879-1026 |7 nnns |
| 773 | 1 | 8 | |g volume:874 |g year:2023 |g day:20 |g month:05 |g pages:162170 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1016/j.scitotenv.2023.162170 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 874 |j 2023 |b 20 |c 05 |h 162170 | ||