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Zvekic M, Barrett H, Diamente P, Peng H, Krogh ET. Unique hepatic maternal transfer pattern of trace metals and perfluoroalkyl substances (PFAS) in a bluntnose sixgill shark (Hexanchus griseus). CHEMOSPHERE 2024; 359:142315. [PMID: 38735494 DOI: 10.1016/j.chemosphere.2024.142315] [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: 01/05/2024] [Revised: 03/28/2024] [Accepted: 05/09/2024] [Indexed: 05/14/2024]
Abstract
The fate and distribution of environmental contaminants includes bioaccumulation within marine organisms. A deceased 4-m long adult female bluntnose sixgill shark, pregnant with 72 pups, was recovered from Coles Bay on Vancouver Island, BC, Canada in 2019. This specimen provided a unique opportunity to examine maternal transfer of contaminants in a yolk-sac viviparous shark species. Liver subsamples of the adult and offspring were analyzed for 18 targeted inorganic elements by inductively coupled plasma optical emission spectroscopy (ICP-OES) and 21 targeted perfluoroalkyl substances (PFAS) by liquid chromatography-electrospray ionization-high resolution mass spectrometry (LC-ESI-Orbitrap MS). The maternal-offspring transfer efficiencies in liver tissue were subsequently examined for both contaminant classes. Concentrations of all detectable metals apart from calcium and magnesium were found to be higher in the mother compared to the offspring, including substantial levels of toxic cadmium (6 ± 2 mg kg-1 dw) and lead (7 ± 3 mg kg-1 dw). Conversely, high maternal transfer efficiencies were observed for PFAS (i.e., ΣPFAS = 71 ± 9 ng g-1 ww in offspring compared to 13 ± 9 ng g-1 ww in the mother). This study highlighted the unique maternal transfer characteristics of PFAS in bluntnose sixgill sharks depending on the structure of the polar head group, with greater liver-to-liver transfer efficiencies observed for perfluorocarboxylic acids (PFCAs) than perfluorosulfonic acids (PFSAs) of the same fluorocarbon chain length.
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Affiliation(s)
- Misha Zvekic
- Applied Environmental Research Laboratories (AERL), Department of Chemistry, Vancouver Island University, Nanaimo, V9R 5S5, British Columbia, Canada; Department of Chemistry, University of Victoria, Victoria, V8P 5C2, British Columbia, Canada
| | - Holly Barrett
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - Peter Diamente
- Applied Environmental Research Laboratories (AERL), Department of Chemistry, Vancouver Island University, Nanaimo, V9R 5S5, British Columbia, Canada
| | - Hui Peng
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada
| | - Erik T Krogh
- Applied Environmental Research Laboratories (AERL), Department of Chemistry, Vancouver Island University, Nanaimo, V9R 5S5, British Columbia, Canada; Department of Chemistry, University of Victoria, Victoria, V8P 5C2, British Columbia, Canada.
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Le Croizier G, Lorrain A, Hoyos-Padilla M, Ketchum JT, Amezcua-Martínez F, Le Loc'h F, Munaron JM, Schaal G, Point D. Do marine protected areas influence mercury exposure? Insights from a shark community in the tropical Northeast Pacific. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 336:122352. [PMID: 37562525 DOI: 10.1016/j.envpol.2023.122352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 07/12/2023] [Accepted: 08/08/2023] [Indexed: 08/12/2023]
Abstract
Biomass depletion caused by overfishing is likely to alter the structure of food webs and impact mercury transfer to marine predators. Although marine protected areas (MPAs) are spared from fishing pressure, their influence on biota mercury levels is poorly understood. Here, we used carbon and nitrogen stable isotope compositions as well as mercury concentrations in fin clips to characterize foraging habitat and mercury exposure of a shark community composed of migratory and resident species of the Revillagigedo archipelago, an offshore MPA in the Northeast Pacific off Mexico. We found that the probability of finding migratory sharks in the isotopic niche of Revillagigedo-resident sharks was low, likely reflecting the use of habitats outside the archipelago by highly mobile species. Community-wide variations in mercury were primarily explained by shark length, revealing that bioaccumulation was the main driver of Hg concentrations. We failed to detect a clear effect of foraging habitat on shark mercury exposure, which may be related to migratory species using both exploited and protected areas when moving outside the Revillagigedo MPA. More similar studies on the potential mitigation of Hg contamination by MPAs are needed in the future if fishing pressure increases to satisfy the growing global human population.
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Affiliation(s)
- Gaël Le Croizier
- Instituto de Ciencias Del Mar y Limnología, Universidad Nacional Autónoma de México, Av. Joel Montes Camarena S/N, Mazatlán, Sin, 82040, Mexico.
| | - Anne Lorrain
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280, Plouzané, France
| | - Mauricio Hoyos-Padilla
- Pelagios-Kakunjá A.C, Sinaloa 1540, Col. Las Garzas, C.P. 23070, La Paz, B.C.S., Mexico; Fins Attached: Marine Research and Conservation, 19675 Still Glen Drive, Colorado Springs, CO 80908, USA
| | - James T Ketchum
- Pelagios-Kakunjá A.C, Sinaloa 1540, Col. Las Garzas, C.P. 23070, La Paz, B.C.S., Mexico; MigraMar, Bodega Bay, CA, USA; Centro de Investigaciones Biológicas Noroeste (CIBNOR), La Paz, B.C.S., Mexico
| | - Felipe Amezcua-Martínez
- Instituto de Ciencias Del Mar y Limnología, Universidad Nacional Autónoma de México, Av. Joel Montes Camarena S/N, Mazatlán, Sin, 82040, Mexico
| | | | | | - Gauthier Schaal
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280, Plouzané, France
| | - David Point
- UMR Géosciences Environnement Toulouse (GET), Observatoire Midi Pyrénées (OMP), 14 Avenue Edouard Belin, 31400, Toulouse, France
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Martins MF, Costa PG, Guerreiro ADS, Bianchini A. Consequences of prenatal exposure to contaminants in elasmobranchs: Biochemical outcomes during the embryonic development of Pseudobatos horkelii. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 323:121276. [PMID: 36791946 DOI: 10.1016/j.envpol.2023.121276] [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: 04/22/2022] [Revised: 02/08/2023] [Accepted: 02/11/2023] [Indexed: 06/18/2023]
Abstract
Coastal elasmobranchs are vulnerable to chemicals mostly due to their k-strategic life history characteristics and high trophic positions. Embryos might be particularly exposed through the maternal offloading of contaminants, possibly leading to disruptions during critical developmental phases. Yet, knowledge on biochemical outcomes of prenatal exposure in elasmobranchs is notably limited. Therefore, we aimed to investigate the effects of prenatal exposure to contaminants in embryos of the critically endangered Brazilian guitarfish, Pseudobatos horkelii. Polybrominated diphenyl ethers (PBDEs), polycyclic aromatic hydrocarbons (PAHs), pharmaceuticals and personal care products, and metals were determined in embryos. Additionally, glutathione S-transferase activity (GST), glutathione (GSH), and metallothionein levels (MT) were analyzed. Finally, lipid peroxidation levels (LPO) and protein carbonyl groups (PCO) were assessed. Embryonic exposure depended on yolk consumption, which was conspicuous in earlier development. We observed a dilution effect of contaminants levels, potentially related to biotransformation of these compounds throughout the embryonic development. Nevertheless, GST was not correlated to contaminant concentrations. The multivariate relationship between antioxidant components (GSH and GST) and LPO and PCO was negative, suggesting the lack of efficient defense of these biomarkers in early development, leading to oxidative damage. In this context, our results indicate that prenatal exposure to contaminants might impact the redox status in embryos of P. horkelii, leading to oxidative damage. Furthermore, metal concentrations influenced MT levels, suggesting this as a potential detoxification pathway in this species.
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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, Rio Grande, RS, 96203-900, Brazil.
| | - Patrícia G Costa
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande - FURG, Av. Itália Km 8, Rio Grande, RS, 96203-900, Brazil
| | - Amanda da S Guerreiro
- Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo - USP. Rua do Matão, Trav. 14, São Paulo, SP, 05508-090, Brazil
| | - Adalto Bianchini
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande - FURG, Av. Itália Km 8, Rio Grande, RS, 96203-900, Brazil
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Baró-Camarasa I, Marmolejo-Rodríguez AJ, Cobelo-García A, Palacios MD, Murillo-Cisneros DA, Galván-Magaña F. Essential and non-essential trace element concentrations in muscle and liver of a pregnant Munk's pygmy devil ray (Mobula munkiana) and its embryo. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:61623-61629. [PMID: 34775562 DOI: 10.1007/s11356-021-17390-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 11/02/2021] [Indexed: 06/13/2023]
Abstract
During gestation, essential and non-essential trace elements are transferred from the pregnant females to embryos. This study aimed to determine and compare the concentrations of seven essential trace elements (Fe, Zn, Se, Cu, Mn, Cr, Co) and six non-essential trace elements (As, Cd, V, U, Tl, Ag) in the muscle and the liver of a Munk's pygmy devil ray pregnant female, Mobula munkiana, and its embryo. Transfer evidence of essential and non-essential trace elements was detected in M. munkiana tissues. Arsenic was found in elevated concentrations in the pregnant female and the embryo tissues. Elevated levels of Cd, V, U, and Ag were found in the pregnant female liver, but were minimal in the embryo tissue. This is the first study to investigate maternal transfer of essential and non-essential trace elements in these species and their reproductive strategy.
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Affiliation(s)
- Isis Baró-Camarasa
- Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Av. I.P.N. s/n, Colonia Playa Palo de Santa Rita, Apartado Postal 592, La Paz, 23000, Baja California Sur, Mexico
| | - Ana Judith Marmolejo-Rodríguez
- Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Av. I.P.N. s/n, Colonia Playa Palo de Santa Rita, Apartado Postal 592, La Paz, 23000, Baja California Sur, Mexico
| | | | - Marta D Palacios
- Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Av. I.P.N. s/n, Colonia Playa Palo de Santa Rita, Apartado Postal 592, La Paz, 23000, Baja California Sur, Mexico
- Pelagios Kakunjá A.C, 23060, La Paz, Baja California Sur, Mexico
- Mobula Conservation, La Paz, 23075, Mexico
| | - Daniela Alejandra Murillo-Cisneros
- Centro de Investigaciones Biológicas del Noroeste, S.C. Planeación Ambiental Y Conservación. Instituto Politécnico Nacional 195, Playa Palo de Santa Rita Sur, La Paz, 23096, Baja California Sur, Mexico
| | - Felipe Galván-Magaña
- Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Av. I.P.N. s/n, Colonia Playa Palo de Santa Rita, Apartado Postal 592, La Paz, 23000, Baja California Sur, Mexico.
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Hauser-Davis RA, Monteiro F, Willmer IQ, Lemos LS, Bordon IC, Saint'Pierre TD, Lutfi DS, Vianna M. Subcellular metal partitioning as a novel tool in ecotoxicological elasmobranch assessments: The case of lesser numbfish (Narcine brasiliensis) affected by the Mariana dam disaster in Southeastern Brazil. MARINE POLLUTION BULLETIN 2022; 177:113569. [PMID: 35334308 DOI: 10.1016/j.marpolbul.2022.113569] [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: 11/14/2021] [Revised: 02/19/2022] [Accepted: 03/12/2022] [Indexed: 06/14/2023]
Abstract
This study comprises a novel report on subcellular metal partitioning and metallothionein (MT) metal detoxification efforts in lesser numbfish (Narcine brasiliensis) electric ray specimens, as well as the first assessment on MT contents in any ray electric organ. Individuals sampled from an area in Southeastern Brazil affected by the Mariana dam rupture disaster were assessed concerning subcellular metal partitioning and MT metal-detoxification in the liver, gonads, electric organ and muscle of both adults and embryos. Yolk was also assessed when available. Relative total and heat-stable (bioavailable) metal and metalloid comparisons between adults and embryos in different developmental stages demonstrates maternal transfer of both total and bioavailable metals and significant MT associations demonstrate the detoxification of As, Ag, Mn, Ni, Cd, Co, Cu, Se and V through this biochemical pathway. Our findings expand the lacking ecotoxicological assessments for this near-threatened species and indicates significant ecological concerns, warranting further biomonitoring efforts.
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Affiliation(s)
- Rachel Ann Hauser-Davis
- Laboratório de Avaliação e Promoção da Saúde Ambiental, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Av. Brasil, 4.365, Manguinhos, Rio de Janeiro 21040-360, Brazil.
| | - Fernanda Monteiro
- Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil
| | - Isabel Quental Willmer
- Laboratório de Avaliação e Promoção da Saúde Ambiental, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Av. Brasil, 4.365, Manguinhos, Rio de Janeiro 21040-360, Brazil; Laboratório de Biologia e Tecnologia Pesqueira, UFRJ, Rio de Janeiro, Brazil
| | - Leila Soledade Lemos
- Institute of Environment, College of Arts, Sciences & Education, Florida International University, North Miami 33181, United States
| | - Isabella C Bordon
- Instituto de Ciencias Biomédicas, Universidade de São Paulo, Av. Lineu Prestes, 1524, 05508-000 São Paulo, SP, Brazil
| | | | | | - Marcelo Vianna
- Laboratório de Avaliação e Promoção da Saúde Ambiental, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Av. Brasil, 4.365, Manguinhos, Rio de Janeiro 21040-360, Brazil; IMAM - AquaRio, Rio de Janeiro Aquarium Research Center, Rio de Janeiro, Brazil
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Martins MF, Costa PG, Bianchini A. Assessing multigenerational exposure to metals in elasmobranchs: Maternal transfer of contaminants in a yolk-sac viviparous species. MARINE POLLUTION BULLETIN 2022; 175:113364. [PMID: 35093781 DOI: 10.1016/j.marpolbul.2022.113364] [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: 12/22/2021] [Revised: 01/13/2022] [Accepted: 01/16/2022] [Indexed: 06/14/2023]
Abstract
This study aimed to assess the maternal offloading of metals in the Brazilian guitarfishPseudobatos horkelii through determining essential (Cr, Cu, Fe) and non-essential (Cd, Hg, Pb) metal concentrations along two generations of this species: pregnant females and offspring. The maximum transfer capacity (ECER) and offspring/mother ratio were calculated to estimate the extent of offloading, as well as the proportion of contaminants presented in offspring related to the maternal concentrations. Transfer efficiency was element-dependent. Chromium had the highest ECER (99.7%), followed by Hg (67.7%). Other essential metals were less transferred (9.6-35.6%) and Cd and Pb were not detected in uterine content samples. The relationships between maternal length and concentration, as well as transfer capacity were not significant, indicating that females might be continuously exposed, and that offloading might not excrete metals efficiently. On the other hand, embryos are exposed to these elements which could impair embryonic development.
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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
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande-FURG, Av. Itália Km 8, 96203-900, Rio Grande, 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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