Assessment of contaminants in blue sharks from the Northeast Atlantic: Profiles, accumulation dynamics, and risks for human consumers
Chemical pollution is a major threat to marine ecosystems, and top predators such as most shark species are extremely vulnerable to being exposed and accumulating contaminants such as metals and persistent organic pollutants (POPs). This work aimed to study the degree, composition, and the sources o...
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Online Access: | http://hdl.handle.net/10261/310200 https://doi.org/10.1016/j.envpol.2022.120467 |
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ftcsic:oai:digital.csic.es:10261/310200 2024-02-11T10:07:01+01:00 Assessment of contaminants in blue sharks from the Northeast Atlantic: Profiles, accumulation dynamics, and risks for human consumers Alves, Luís M.F. Lemos, Marco F. L. Moutinho, Ariana B. Ceia, Filipe R. Muñoz-Arnanz, Juan Jiménez, Begoña Cabral, Henrique Novais, Sara C. Fundação para a Ciência e a Tecnologia (Portugal) 2023 http://hdl.handle.net/10261/310200 https://doi.org/10.1016/j.envpol.2022.120467 unknown Elsevier Publisher's version http://dx.doi.org/10.1016/j.envpol.2022.120467 Sí doi:10.1016/j.envpol.2022.120467 issn: 1873-6424 Environmental pollution (Barking, Essex : 1987) 316 (2023) http://hdl.handle.net/10261/310200 open Elasmobranchs human risk analysis Marine biomonitoring TXRF Metals Pollution artículo 2023 ftcsic https://doi.org/10.1016/j.envpol.2022.120467 2024-01-16T11:42:25Z Chemical pollution is a major threat to marine ecosystems, and top predators such as most shark species are extremely vulnerable to being exposed and accumulating contaminants such as metals and persistent organic pollutants (POPs). This work aimed to study the degree, composition, and the sources of contamination in the blue shark (Prionace glauca) inhabiting the Northeast Atlantic, as well as the potential risk faced by human consumers. A total of 60 sharks were sampled in situ aboard fishing vessels, and the concentrations of a set of metals and POPs were analysed in various tissues and complemented with stable isotope analyses. High levels of contaminants were found in most sharks sampled. The concentrations of most metals were higher in the muscle when compared with the liver. Regarding the dangers to consumers posed by the concentrations of arsenic (As), mercury (Hg), and lead (Pb), over 75% of the sharks presented muscle concentrations of at least one contaminant above the legal limits for human consumption, and a risk assessment determined that consumption of meat of these sharks exceeding 0.07 Kg per week could potentially expose human consumers to dangerous amounts of methylmercury (MeHg). Additionally, the assessment of single contaminants may lead to an underestimation of the risk for the human health. Finally, the overall accumulation of contaminants seems to be mostly influenced by the sharks’ geographical distribution, rather than sex, size, or trophic level of their prey. This study had the support of Fundaçao ˜ para a Ciˆencia e a Tecnologia (FCT) through the project BLUESHARKER (PTDC/CTAAMB/29136/ 2017), co-financed by COMPETE2020 (POCI-01-0145-FEDER-029136), the grant to MARE – Marine and Environmental Sciences Centre (UIDB/ 04292/2020 and UIDP/04292/2020) and the Associate Laboratory ARNET (LA/P/0069/2020), the grant awarded to Luís Alves (SFRH/BD/ 122082/2016), and the transitory norm contract to Filipe Ceia (DL57/ 2016/CP1370/CT90). Sara Novais is funded by national funds (OE), through ... Article in Journal/Newspaper Northeast Atlantic Digital.CSIC (Spanish National Research Council) Environmental Pollution 316 120467 |
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Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Elasmobranchs human risk analysis Marine biomonitoring TXRF Metals Pollution |
spellingShingle |
Elasmobranchs human risk analysis Marine biomonitoring TXRF Metals Pollution Alves, Luís M.F. Lemos, Marco F. L. Moutinho, Ariana B. Ceia, Filipe R. Muñoz-Arnanz, Juan Jiménez, Begoña Cabral, Henrique Novais, Sara C. Assessment of contaminants in blue sharks from the Northeast Atlantic: Profiles, accumulation dynamics, and risks for human consumers |
topic_facet |
Elasmobranchs human risk analysis Marine biomonitoring TXRF Metals Pollution |
description |
Chemical pollution is a major threat to marine ecosystems, and top predators such as most shark species are extremely vulnerable to being exposed and accumulating contaminants such as metals and persistent organic pollutants (POPs). This work aimed to study the degree, composition, and the sources of contamination in the blue shark (Prionace glauca) inhabiting the Northeast Atlantic, as well as the potential risk faced by human consumers. A total of 60 sharks were sampled in situ aboard fishing vessels, and the concentrations of a set of metals and POPs were analysed in various tissues and complemented with stable isotope analyses. High levels of contaminants were found in most sharks sampled. The concentrations of most metals were higher in the muscle when compared with the liver. Regarding the dangers to consumers posed by the concentrations of arsenic (As), mercury (Hg), and lead (Pb), over 75% of the sharks presented muscle concentrations of at least one contaminant above the legal limits for human consumption, and a risk assessment determined that consumption of meat of these sharks exceeding 0.07 Kg per week could potentially expose human consumers to dangerous amounts of methylmercury (MeHg). Additionally, the assessment of single contaminants may lead to an underestimation of the risk for the human health. Finally, the overall accumulation of contaminants seems to be mostly influenced by the sharks’ geographical distribution, rather than sex, size, or trophic level of their prey. This study had the support of Fundaçao ˜ para a Ciˆencia e a Tecnologia (FCT) through the project BLUESHARKER (PTDC/CTAAMB/29136/ 2017), co-financed by COMPETE2020 (POCI-01-0145-FEDER-029136), the grant to MARE – Marine and Environmental Sciences Centre (UIDB/ 04292/2020 and UIDP/04292/2020) and the Associate Laboratory ARNET (LA/P/0069/2020), the grant awarded to Luís Alves (SFRH/BD/ 122082/2016), and the transitory norm contract to Filipe Ceia (DL57/ 2016/CP1370/CT90). Sara Novais is funded by national funds (OE), through ... |
author2 |
Fundação para a Ciência e a Tecnologia (Portugal) |
format |
Article in Journal/Newspaper |
author |
Alves, Luís M.F. Lemos, Marco F. L. Moutinho, Ariana B. Ceia, Filipe R. Muñoz-Arnanz, Juan Jiménez, Begoña Cabral, Henrique Novais, Sara C. |
author_facet |
Alves, Luís M.F. Lemos, Marco F. L. Moutinho, Ariana B. Ceia, Filipe R. Muñoz-Arnanz, Juan Jiménez, Begoña Cabral, Henrique Novais, Sara C. |
author_sort |
Alves, Luís M.F. |
title |
Assessment of contaminants in blue sharks from the Northeast Atlantic: Profiles, accumulation dynamics, and risks for human consumers |
title_short |
Assessment of contaminants in blue sharks from the Northeast Atlantic: Profiles, accumulation dynamics, and risks for human consumers |
title_full |
Assessment of contaminants in blue sharks from the Northeast Atlantic: Profiles, accumulation dynamics, and risks for human consumers |
title_fullStr |
Assessment of contaminants in blue sharks from the Northeast Atlantic: Profiles, accumulation dynamics, and risks for human consumers |
title_full_unstemmed |
Assessment of contaminants in blue sharks from the Northeast Atlantic: Profiles, accumulation dynamics, and risks for human consumers |
title_sort |
assessment of contaminants in blue sharks from the northeast atlantic: profiles, accumulation dynamics, and risks for human consumers |
publisher |
Elsevier |
publishDate |
2023 |
url |
http://hdl.handle.net/10261/310200 https://doi.org/10.1016/j.envpol.2022.120467 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
Publisher's version http://dx.doi.org/10.1016/j.envpol.2022.120467 Sí doi:10.1016/j.envpol.2022.120467 issn: 1873-6424 Environmental pollution (Barking, Essex : 1987) 316 (2023) http://hdl.handle.net/10261/310200 |
op_rights |
open |
op_doi |
https://doi.org/10.1016/j.envpol.2022.120467 |
container_title |
Environmental Pollution |
container_volume |
316 |
container_start_page |
120467 |
_version_ |
1790605120734494720 |