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Riesgo L, Sanpera C, García-Barcelona S, Sánchez-Fortún M, Coll M, Navarro J. Understanding the role of ecological factors affecting mercury concentrations in the blue shark (Prionace glauca). CHEMOSPHERE 2023; 313:137642. [PMID: 36572364 DOI: 10.1016/j.chemosphere.2022.137642] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 12/21/2022] [Accepted: 12/22/2022] [Indexed: 06/17/2023]
Abstract
Human activities have increased environmental concentrations of pollutants in marine ecosystems, which can cause harmful effects on marine organisms. Top predators are particularly susceptible to bioaccumulation and biomagnification of pollutants through the food webs and are described as good sentinels for monitoring metal accumulation such mercury (Hg) in marine ecosystems. However, to be used as sentinels, it is important to understand the main ecological factors affecting the concentrations of pollutants in these organisms. In the present study, our main objective was to investigate the effect of body size, sex, trophic niche and geographic area on Hg concentrations in a top marine top predator, the blue shark (Prionace glauca). We analysed Hg in muscle samples from male and female blue sharks of different body sizes collected from the waters surrounding the Canary Islands and the South of Portugal, in the Atlantic Ocean, to waters of the north-western Mediterranean Sea. The results revealed that the sampling area was an important factor explaining Hg concentrations, showing higher values in the Mediterranean blue sharks. We also found a positive relationship between Hg concentrations and body size of blue sharks, indicating a bioaccumulation process of this pollutant in relation with body size. Moreover, we observed a relationship between Hg concentrations and δ13C values, a proxy of the use of inshore-offshore marine habitats. Individuals with depleted δ13C values that potentially foraged in offshore waters showed higher Hg values. Importantly, most of the analysed blue sharks presented Hg concentrations that exceeded the limits established by the European Union for human consumption.
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Affiliation(s)
- Lola Riesgo
- Institut de Ciències Del Mar (ICM), CSIC, Barcelona, Spain; Departament de Biologia Evolutiva, Ecologia I Ciències Ambientals, Universitat de Barcelona, Barcelona, Spain
| | - Carola Sanpera
- Departament de Biologia Evolutiva, Ecologia I Ciències Ambientals, Universitat de Barcelona, Barcelona, Spain
| | | | - Moisès Sánchez-Fortún
- Departament de Biologia Evolutiva, Ecologia I Ciències Ambientals, Universitat de Barcelona, Barcelona, Spain
| | - Marta Coll
- Institut de Ciències Del Mar (ICM), CSIC, Barcelona, Spain
| | - Joan Navarro
- Institut de Ciències Del Mar (ICM), CSIC, Barcelona, Spain.
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2
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Alves LMF, Lemos MFL, Moutinho AB, Ceia FR, Muñoz-Arnanz J, Jiménez B, Cabral H, Novais SC. Assessment of contaminants in blue sharks from the Northeast Atlantic: Profiles, accumulation dynamics, and risks for human consumers. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 316:120467. [PMID: 36273690 DOI: 10.1016/j.envpol.2022.120467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 10/14/2022] [Accepted: 10/15/2022] [Indexed: 06/16/2023]
Abstract
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.
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Affiliation(s)
- Luís M F Alves
- MARE- Marine and Environmental Sciences Centre & ARNET - Aquatic Research Infrastructure Network Associated Laboratory, ESTM, Polytechnic of Leiria, Peniche, Portugal.
| | - Marco F L Lemos
- MARE- Marine and Environmental Sciences Centre & ARNET - Aquatic Research Infrastructure Network Associated Laboratory, ESTM, Polytechnic of Leiria, Peniche, Portugal
| | - Ariana B Moutinho
- MARE- Marine and Environmental Sciences Centre & ARNET - Aquatic Research Infrastructure Network Associated Laboratory, ESTM, Polytechnic of Leiria, Peniche, Portugal
| | - Filipe R Ceia
- University of Coimbra, MARE - Marine and Environmental Sciences Centre / ARNET - Aquatic Research Network, Department of Life Sciences, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
| | - Juan Muñoz-Arnanz
- Dept. of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, (IQOG-CSIC), Madrid, Spain
| | - Begoña Jiménez
- Dept. of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, (IQOG-CSIC), Madrid, Spain
| | | | - Sara C Novais
- MARE- Marine and Environmental Sciences Centre & ARNET - Aquatic Research Infrastructure Network Associated Laboratory, ESTM, Polytechnic of Leiria, Peniche, Portugal
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Maciel OLDC, Willmer IQ, Saint'Pierre TD, Machado W, Siciliano S, Hauser-Davis RA. Arsenic contamination in widely consumed Caribbean sharpnose sharks in southeastern Brazil: Baseline data and concerns regarding fisheries resources. MARINE POLLUTION BULLETIN 2021; 172:112905. [PMID: 34523430 DOI: 10.1016/j.marpolbul.2021.112905] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/16/2021] [Accepted: 08/22/2021] [Indexed: 06/13/2023]
Abstract
Although shark meat is consumed worldwide, elevated arsenic (As) concentrations have been increasingly reported. The Caribbean sharpnose shark (Rhizoprionodon porosus) is a widely consumed fishing resource in Brazil, with scarce information on As burdens to date. Herein, commercial-sized juvenile Caribbean sharpnose sharks from Rio de Janeiro (Brazil) were assessed in this regard, presenting significantly higher hepatic As concentrations in males (8.24 ± 1.20 mg kg-1 wet weight; n = 12) compared to females (6.59 ± 1.87 mg kg-1 w.w.; n = 8), and a positive correlation (r = 0.74) was noted between female muscle and liver As concentrations, indicating systemic inter-tissue transport not evidenced in males. Arsenic concentrations were over the maximum permissible As limit established in Brazilian legislation for seafood and calculated Target Hazard Quotients suggest consumption risks, although cancer risks were not evidenced. Therefore, Public Health concerns with regard to Caribbean sharpnose shark As burdens deserve careful attention.
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Affiliation(s)
- Oswaldo Luiz de C Maciel
- Fundação Instituto da Pesca do Estado do Rio de Janeiro (FIPERJ), 24030-020 Niterói, RJ, Brazil; Programa de Pós-Graduação em Geociências (Geoquímica), Universidade Federal Fluminense (UFF), 24020-141 Niterói, RJ, Brazil.
| | - Isabel Q Willmer
- Laboratório de Avaliação e Promoção da Saúde Ambiental, Instituto Oswaldo Cruz (Fiocruz), 21040-360 Rio de Janeiro, RJ, Brazil; Laboratório de Biologia e Tecnologia Pesqueira, Departamento de Biologia Marinha, Universidade do Rio de Janeiro (UFRJ), 21941-902 Rio de Janeiro, RJ, Brazil
| | - Tatiana D Saint'Pierre
- Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), 22453-900 Rio de Janeiro, RJ, Brazil
| | - Wilson Machado
- Programa de Pós-Graduação em Geociências (Geoquímica), Universidade Federal Fluminense (UFF), 24020-141 Niterói, RJ, Brazil; Laboratório de Geoquímica do Antropoceno, Departamento de Geoquímica, Universidade Federal Fluminense (UFF), 24020-141 Niterói, RJ, Brazil.
| | - Salvatore Siciliano
- Grupo de Estudos de Mamíferos Marinhos da Região dos Lagos (GEMM-Lagos), 28970-000 Araruama, RJ, Brazil; Fundação Oswaldo Cruz (Fiocruz), Av. Brasil, 4.365, Manguinhos, 21040-900 Rio de Janeiro, RJ, Brazil
| | - Rachel Ann Hauser-Davis
- Laboratório de Avaliação e Promoção da Saúde Ambiental, Instituto Oswaldo Cruz (Fiocruz), 21040-360 Rio de Janeiro, RJ, Brazil.
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Martins MF, Costa PG, Gadig OBF, Bianchini A. Metal contamination in threatened elasmobranchs from an impacted urban coast. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 757:143803. [PMID: 33293088 DOI: 10.1016/j.scitotenv.2020.143803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/29/2020] [Accepted: 10/31/2020] [Indexed: 06/12/2023]
Abstract
Guitarfishes and angelsharks are two of the most endangered elasmobranch groups. Despite this, limited knowledge exists regarding the effects of environmental contamination in these groups. For this reason, this study assessed the concentrations of metals in liver and muscle of three guitarfishes (Pseudobatos horkelii, P. percellens, and Zapteryx brevirostris) and one angelshark species (Squatina guggenheim) captured during the year of 2019 in one of the most impacted areas in South America: the São Paulo State coast, Brazil, Southwest Atlantic. Cadmium (Cd) Chromium (Cr) Cupper (Cu) Iron (Fe), Mercury (Hg), and Lead (Pb) were determined by atomic spectrometry, with samples being previously acid digested. Among the non-essential metals, Cd had the highest mean concentrations for all species, followed by Pb and Hg, whereas Fe had the highest mean levels among the essential metals analyzed, followed by Cu and Cr. Liver and muscle samples had different concentrations, with liver presenting the highest concentrations. Except for Cd, non-essential metals had relatively low concentrations when compared to other elasmobranch species reported in the literature, which could be explained by the efficiency in metabolizing these compounds or differential life history patterns among the species studied herein and other. Considering that all species analyzed herein are typically consumed, human health impacts must be considered, especially concerning Cd concentrations. Furthermore, Cd, Cr and Pb were above the safety limits, indicating potential hazard for human consumption. In conclusion, our results suggest that these species are exposed to metals and that concentrations above the safety limits observed for these species must be taken into consideration regarding human consumption.
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Affiliation(s)
- Mariana F Martins
- Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Av. Itália Km 8, 96203-900 Rio Grande, Brazil.
| | - Patrícia G Costa
- Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Av. Itália Km 8, 96203-900 Rio Grande, Brazil
| | - Otto B F Gadig
- Elasmobranch Research Laboratory, Instituto de Biociências, Universidade Estadual Paulista "Júlio de Mesquita Filho", Campus do Litoral Paulista, Praça Infante Dom Henrique s/n°, 11330-900 São Vicente, Brazil
| | - Adalto Bianchini
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Av. Itália Km 8, 96203-900 Rio Grande, Brazil
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Torres P, Rodrigues A, Prestes ACL, Neto AI, Álvaro N, Martins GM. The Azorean edible abalone Haliotis tuberculata, an alternative heavy metal-free marine resource? CHEMOSPHERE 2020; 242:125177. [PMID: 31677516 DOI: 10.1016/j.chemosphere.2019.125177] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 10/04/2019] [Accepted: 10/20/2019] [Indexed: 06/10/2023]
Abstract
Abalones are considered a delicacy and exploited for food worldwide. In many places, overfishing has led to the decimation of wild stocks and many are now reared in aquaculture systems. In the Azores, there is no tradition of eating abalones and Haliotis tuberculata stocks are still virtually untouched. However, as tourism in the islands grows and the stocks of other shellfish diminish, there is an increasing pressure to find alternative edible resources, leading to a rising interest in abalones. According to previous studies performed in the region, other edible species, including the local highly appreciated limpets and the giant barnacle, present high concentration levels of some heavy metals, which has been attributed to the volcanic origin of the islands. Here we analysed the metal content in the edible tissue of Haliotis tuberculata from São Miguel Island, Azores. The potential human health risks due to its consumption was assessed by estimating the average daily intake (EDI) and target hazard quotient (THQ) of metals. Similarly to other organisms in the Azores, abalones have higher than normal levels of some heavy metals, particularly cadmium, reflecting a local natural source that should be closely monitored from a public health point of view.
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Affiliation(s)
- Paulo Torres
- CIBIO, Research Centre in Biodiversity and Genetic Resources - InBIO Associate Laboratory, University of the Azores, Rua Mãe de Deus, 58, 9500-321, Ponta Delgada, Azores, Portugal.
| | - Armindo Rodrigues
- IVAR - Instituto de Investigação em Vulcanologia e Avaliação de Riscos, University of the Azores, Rua Mãe de Deus, 58, 9500-321, Ponta Delgada, Azores, Portugal; Faculty of Sciences and Technology, University of the Azores, Rua Mãe de Deus, 58, 9500-321, Ponta Delgada, Azores, Portugal
| | - Afonso C L Prestes
- Faculty of Sciences and Technology, University of the Azores, Rua Mãe de Deus, 58, 9500-321, Ponta Delgada, Azores, Portugal; CE3C, Centre for Ecology, Evolution and Environmental Changes/Azorean Biodiversity Group, University of the Azores, Rua Mãe de Deus, 58, 9500-321, Ponta Delgada, Azores, Portugal
| | - Ana I Neto
- Faculty of Sciences and Technology, University of the Azores, Rua Mãe de Deus, 58, 9500-321, Ponta Delgada, Azores, Portugal; CE3C, Centre for Ecology, Evolution and Environmental Changes/Azorean Biodiversity Group, University of the Azores, Rua Mãe de Deus, 58, 9500-321, Ponta Delgada, Azores, Portugal
| | - Nuno Álvaro
- IITAA, Institute for Investigation and Technology of Agronomy and Environment, University of the Azores, Campus de Angra do Heroísmo Rua Capitão João d'Ávlia, Pico da Urze PT, 9700-042, Angra do Heroísmo, Azores, Portugal
| | - Gustavo M Martins
- CE3C, Centre for Ecology, Evolution and Environmental Changes/Azorean Biodiversity Group, University of the Azores, Rua Mãe de Deus, 58, 9500-321, Ponta Delgada, Azores, Portugal; AQUAZOR, Marine Aquaculture and Biotechnology of the Azores, 9500-331, Ponta Delgada, Azores, Portugal
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6
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Mirlean N, Ferraz AH, Seus-Arrache ER, Andrade CFF, Costa LP, Johannesson KH. Mercury and selenium in the Brazilian subtropical marine products: Food composition and safety. J Food Compost Anal 2019. [DOI: 10.1016/j.jfca.2019.103310] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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7
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Biton-Porsmoguer S, Bǎnaru D, Boudouresque CF, Dekeyser I, Bouchoucha M, Marco-Miralles F, Lebreton B, Guillou G, Harmelin-Vivien M. Mercury in blue shark (Prionace glauca) and shortfin mako (Isurus oxyrinchus) from north-eastern Atlantic: Implication for fishery management. MARINE POLLUTION BULLETIN 2018; 127:131-138. [PMID: 29475644 DOI: 10.1016/j.marpolbul.2017.12.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 11/17/2017] [Accepted: 12/02/2017] [Indexed: 06/08/2023]
Abstract
Pelagic sharks (blue shark Prionace glauca and shortfin mako Isurus oxyrinchus) caught by long-line Spanish and Portuguese fleets in the NE Atlantic, were sampled at Vigo fish market (Spain) for total mercury (Hg) analysis. Hg concentration in white muscle increased with size and weight in both species, but at a higher rate in shortfin mako than in the blue shark. No difference was found with sex, year and season. Spatial variation was observed in the blue shark with higher Hg values in the North of the Azorean archipelago, but not in the shortfin mako. These high-level predators are particularly susceptible to bioaccumulate contaminants (Hg) in their tissues (muscle). However, a significant positive relationship between Hg concentration and trophic level (δ15N) of individuals was observed only in the shortfin mako. Most sharks landed were juveniles which presented Hg concentration lower than the maximum limit allowed by the European Union (1mgkg-1 wet weight) for marketing. However, concentrations above this threshold were most recorded in blue sharks larger than 250cm total length (TL) and in shortfin makos larger than 190cm TL, raising the question of the commercialization of large-sized individuals.
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Affiliation(s)
- Sebastián Biton-Porsmoguer
- Aix-Marseille University, CNRS/INSU, Toulon University, IRD, Mediterranean Institute of Oceanography (MIO) UM 110, Campus de Luminy, 13288 Marseille, France
| | - Daniela Bǎnaru
- Aix-Marseille University, CNRS/INSU, Toulon University, IRD, Mediterranean Institute of Oceanography (MIO) UM 110, Campus de Luminy, 13288 Marseille, France.
| | - Charles F Boudouresque
- Aix-Marseille University, CNRS/INSU, Toulon University, IRD, Mediterranean Institute of Oceanography (MIO) UM 110, Campus de Luminy, 13288 Marseille, France
| | - Ivan Dekeyser
- Aix-Marseille University, CNRS/INSU, Toulon University, IRD, Mediterranean Institute of Oceanography (MIO) UM 110, Campus de Luminy, 13288 Marseille, France
| | - Marc Bouchoucha
- Institut Français de Recherche pour l'Exploitation de la Mer (Ifremer), Z.P. Brégaillon, CS 20203, 83507 La Seyne-sur-Mer, France
| | - Françoise Marco-Miralles
- Institut Français de Recherche pour l'Exploitation de la Mer (Ifremer), Z.P. Brégaillon, CS 20203, 83507 La Seyne-sur-Mer, France
| | - Benoît Lebreton
- Littoral Environnement et Sociétés, UMR 7266 CNRS-Université de La Rochelle, 2 Rue Olympe de Gouges, 17000 La Rochelle, France
| | - Gaël Guillou
- Littoral Environnement et Sociétés, UMR 7266 CNRS-Université de La Rochelle, 2 Rue Olympe de Gouges, 17000 La Rochelle, France
| | - Mireille Harmelin-Vivien
- Aix-Marseille University, CNRS/INSU, Toulon University, IRD, Mediterranean Institute of Oceanography (MIO) UM 110, Campus de Luminy, 13288 Marseille, France
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