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Kljaković-Gašpić Z, Dvoršćak M, Orct T, Sekovanić A, Klinčić D, Jagić K, Šebešćen D, Klasiček E, Zanella D. Metal(loid)s and persistent organic pollutants in yellow European eel from the Raša River, Croatia. MARINE POLLUTION BULLETIN 2023; 187:114527. [PMID: 36608477 DOI: 10.1016/j.marpolbul.2022.114527] [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: 09/29/2022] [Revised: 11/25/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
The anthropogenic impact on the aquatic environment of the Raša River (Croatia) was investigated through the analysis of seven polybrominated diphenyl ethers (PBDEs), seven polychlorinated biphenyls (PCBs), three DDT isomers, and 22 major and trace elements using yellow European eel (Anguilla anguilla L.) as a biological indicator of contamination. The obtained data indicated generally low contamination status in the surrounding area. Levels of all organic contaminants in muscle significantly increased with lipid content, length, weight and body condition. In both muscle and liver, most metal(loid)s decreased or remained unchanged with increasing size, while at downstream location only several elements (Cd, Cu, Fe, Na, Se, U, V, Zn) accumulated in the liver with fish growth. Spatial analysis revealed higher pressure of Ag, Cd, Cr, Mo, Tl, U, and V at the downstream location, revealing the potentially limited impact of historical coal mining industry on the lower reaches of the Raša River.
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Affiliation(s)
- Zorana Kljaković-Gašpić
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10 000 Zagreb, Croatia
| | - Marija Dvoršćak
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10 000 Zagreb, Croatia.
| | - Tatjana Orct
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10 000 Zagreb, Croatia
| | - Ankica Sekovanić
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10 000 Zagreb, Croatia
| | - Darija Klinčić
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10 000 Zagreb, Croatia
| | - Karla Jagić
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10 000 Zagreb, Croatia
| | - Dora Šebešćen
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10 000 Zagreb, Croatia; University of Zagreb, Faculty of Science, Department of Biology, Rooseveltov trg 6, 10 000 Zagreb, Croatia
| | - Elena Klasiček
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10 000 Zagreb, Croatia; University of Zagreb, Faculty of Science, Department of Biology, Rooseveltov trg 6, 10 000 Zagreb, Croatia
| | - Davor Zanella
- University of Zagreb, Faculty of Science, Department of Biology, Rooseveltov trg 6, 10 000 Zagreb, Croatia
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Pérez-Vegas A, Pérez-López M, Barcala E, Romero D, Muñoz P. Organochlorine residues in muscle of European eels (Anguilla anguilla) from four Spanish Mediterranean wetlands and coastal lagoons. MARINE POLLUTION BULLETIN 2023; 186:114408. [PMID: 36521362 DOI: 10.1016/j.marpolbul.2022.114408] [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: 05/05/2022] [Revised: 11/14/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
European eels (Anguilla anguilla) are an endangered species throughout their range, and chlorine organic compounds are some of the most important pollutants for marine species. Data on contaminants in eel stocks remain incomplete, so organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in muscle of European eels from four Spanish Mediterranean ecosystems were analyzed. COPs are presents in eels from all areas, but some compounds are not detected: HCH α, β and γ (lindane), endosulfan sulfate, heptachlor, and PCBs 28, 52 and 180. The high percentage of DDT 2,4' in eels from S'Albufera des Grau Natural Park, an ecosystem with good ecological status according to the Water Framework Directive, and the presence of PCBs in S'Albufereta Natural Reserve indicate the need to carry out further studies in the future. The results obtained can improve the management of this species in the studied areas.
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Affiliation(s)
- Alonso Pérez-Vegas
- Department of Animal Health, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100 Murcia, Spain
| | - Marcos Pérez-López
- Toxicology Unit, Veterinary School, Avda. de la Universidad s/n, 10003 Cáceres, Spain
| | - Elena Barcala
- Centro Nacional Instituto Español de Oceanografía, Centro Oceanográfico de Murcia, CSIC, C/Varadero, s/n, 30740 San Pedro del Pinatar, Spain
| | - Diego Romero
- Toxicology Department, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100 Murcia, Spain.
| | - Pilar Muñoz
- Department of Animal Health, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100 Murcia, Spain
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Kljaković-Gašpić Z, Sekovanić A, Orct T, Šebešćen D, Klasiček E, Zanella D. Potentially Toxic Elements in Water, Sediments and Fish from the Karstic River (Raša River, Croatia) Located in the Former Coal-Mining Area. TOXICS 2022; 11:42. [PMID: 36668768 PMCID: PMC9865867 DOI: 10.3390/toxics11010042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 12/27/2022] [Accepted: 12/28/2022] [Indexed: 06/17/2023]
Abstract
The assessment of the environmental quality of a sensitive karst aquatic system under the centuries-long anthropogenic influence of the coal mining industry is important for both improving the quality of water resources and protecting aquatic wildlife and human health. In this study, we investigated the anthropogenic impact on the aquatic environment of the upper and middle course of the Raša River through the analysis of a suite of metal(loid)s in three aquatic compartments (water, sediment, fish) using inductively coupled plasma mass spectrometry (ICP-MS). Concentrations of inorganic constituents in water were low, while the chemical composition of stream sediments mainly reflected the geological background of the area, indicating the origin of metal(loid)s from predominantly natural sources. Although comparison with PEC-Q values indicated that existing sediment quality conditions could pose a threat to benthic organisms with regard to Cr and Ni, the constant vertical profiles of these elements suggested their natural origin from the weathering of flysch. Element levels in the muscle of targeted fish species were in accordance with the values typical for low-contaminated freshwater systems, while levels of Cd, Pb and Hg were mostly below the European regulatory limits for toxic elements in foods, indicating that the low concentrations of most contaminants in muscles of fish from the Raša River do not present a risk to humans or other consumers. The obtained data indicated a generally low contamination status of the western part of the Raša River basin with regard to the analyzed inorganic elements.
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Affiliation(s)
- Zorana Kljaković-Gašpić
- Analytical Toxicology and Mineral Metabolism Unit, Institute for Medical Research and Occupational Health, Ksaverska Cesta 2, 10000 Zagreb, Croatia
| | - Ankica Sekovanić
- Analytical Toxicology and Mineral Metabolism Unit, Institute for Medical Research and Occupational Health, Ksaverska Cesta 2, 10000 Zagreb, Croatia
| | - Tatjana Orct
- Analytical Toxicology and Mineral Metabolism Unit, Institute for Medical Research and Occupational Health, Ksaverska Cesta 2, 10000 Zagreb, Croatia
| | - Dora Šebešćen
- Analytical Toxicology and Mineral Metabolism Unit, Institute for Medical Research and Occupational Health, Ksaverska Cesta 2, 10000 Zagreb, Croatia
- Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia
| | - Elena Klasiček
- Analytical Toxicology and Mineral Metabolism Unit, Institute for Medical Research and Occupational Health, Ksaverska Cesta 2, 10000 Zagreb, Croatia
- Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia
| | - Davor Zanella
- Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia
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Nzau Matondo B, Delrez N, Bardonnet A, Vanderplasschen A, Joaquim-Justo C, Rives J, Benitez JP, Dierckx A, Séleck E, Rollin X, Ovidio M. A complete check-up of European eel after eight years of restocking in an upland river: Trends in growth, lipid content, sex ratio and health status. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 807:151020. [PMID: 34662625 DOI: 10.1016/j.scitotenv.2021.151020] [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: 07/01/2021] [Revised: 10/11/2021] [Accepted: 10/12/2021] [Indexed: 06/13/2023]
Abstract
By combining field research and careful laboratory analysis of samples over the course of an eight-year study, we met the challenge of assessing the life history traits and health status of eels restocked in freshwater ecosystems. We found that restocked eels exhibited good growth performance; moreover, the stocks were female-dominated, showed a good Fulton's condition factor (K) and lipid stores and had high survival probability estimated using the best model of Jolly-Seber stock assessment method for open populations. A necropsy revealed the absence of internal lesions. A swim bladder examination revealed the absence of the parasite Anguillicola crassus. Polymerase chain reaction (PCR) analyses revealed an increase of Anguillid herpesvirus-1 (AngHV-1) prevalence throughout the study. Most positive subjects expressed viral loads compatible with a latent infection and correlated positively with K. All restocked eels were contaminated by at least one of the organic pollutant congeners studied, but the pollution loads corresponded to the lowest range of pollutant concentrations reported in the available literature for European eels and did not exceed the maximum residue and contaminant limits in food and feed of several national and international regulations. Pollutant loads were negatively correlated with K, lipid content and eel density for polychlorinated biphenyls PCB 138, 153 and 180 and K for pesticides p.p'-DDE, p.p'-DDD, p.p'-DDT and PBDE47. This study highlights the potential role played by upland aquatic ecosystems in enhancing riverine silver eel production from the perspective of species conservation. To be successful, restocking must be accompanied by improved ecosystem quality and migration routes for eels in inland freshwaters. We also provide some recommendations for future research to improve the management of restocking programmes.
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Affiliation(s)
- Billy Nzau Matondo
- Laboratory of Fish Demography and Hydroecology, Management of Aquatic Resources and Aquaculture Unit, Freshwater and Oceanic science Unit of Research-FOCUS, University of Liège, 22 Quai E. Van Beneden, B-4020 Liège, Belgium.
| | - Natacha Delrez
- Immunology-Vaccinology, Department of Infectious and Parasitic Diseases, Fundamental and Applied Research for Animals & Health (FARAH), Faculty of Veterinary Medicine, University of Liège, Liège, Belgium.
| | - Agnès Bardonnet
- Behavioural Ecology and Fish Population Biology-ECOBIOP (French National Institute for Agriculture, Food and Environment-INRAE, Saint-Pée-sur-Nivelle, France).
| | - Alain Vanderplasschen
- Immunology-Vaccinology, Department of Infectious and Parasitic Diseases, Fundamental and Applied Research for Animals & Health (FARAH), Faculty of Veterinary Medicine, University of Liège, Liège, Belgium.
| | - Célia Joaquim-Justo
- Laboratory of Animal Ecology and Ecotoxicology, Freshwater and Oceanic science Unit of Research-FOCUS, University of Liège, Belgium.
| | - Jacques Rives
- Immunology-Vaccinology, Department of Infectious and Parasitic Diseases, Fundamental and Applied Research for Animals & Health (FARAH), Faculty of Veterinary Medicine, University of Liège, Liège, Belgium.
| | - Jean-Philippe Benitez
- Laboratory of Fish Demography and Hydroecology, Management of Aquatic Resources and Aquaculture Unit, Freshwater and Oceanic science Unit of Research-FOCUS, University of Liège, 22 Quai E. Van Beneden, B-4020 Liège, Belgium.
| | - Arnaud Dierckx
- Laboratory of Fish Demography and Hydroecology, Management of Aquatic Resources and Aquaculture Unit, Freshwater and Oceanic science Unit of Research-FOCUS, University of Liège, 22 Quai E. Van Beneden, B-4020 Liège, Belgium.
| | - Emilie Séleck
- Laboratory of Animal Ecology and Ecotoxicology, Freshwater and Oceanic science Unit of Research-FOCUS, University of Liège, Belgium
| | - Xavier Rollin
- SPWARNE-DNF-Public Service of Wallonia - Agriculture, Natural Ressources & Environnement, Wildlife & Forestry Department, 15 Avenue Prince de Liège, B-5100 Jambes, Belgium.
| | - Michaël Ovidio
- Laboratory of Fish Demography and Hydroecology, Management of Aquatic Resources and Aquaculture Unit, Freshwater and Oceanic science Unit of Research-FOCUS, University of Liège, 22 Quai E. Van Beneden, B-4020 Liège, Belgium.
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Calboli FCF, Delahaut V, Deflem I, Hablützel PI, Hellemans B, Kordas A, Raeymaekers JAM, Bervoets L, De Boeck G, Volckaert FAM. Association between Chromosome 4 and mercury accumulation in muscle of the three-spined stickleback ( Gasterosteus aculeatus). Evol Appl 2021; 14:2553-2567. [PMID: 34745343 PMCID: PMC8549617 DOI: 10.1111/eva.13298] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 08/18/2021] [Accepted: 08/29/2021] [Indexed: 11/29/2022] Open
Abstract
Anthropogenic stressors, such as pollutants, act as selective factors that can leave measurable changes in allele frequencies in the genome. Metals are of particular concern among pollutants, because of interference with vital biological pathways. We use the three-spined stickleback as a model for adaptation to mercury pollution in natural populations. We collected sticklebacks from 21 locations in Flanders (Belgium), measured the accumulated levels of mercury in the skeletal muscle tissue, and genotyped the fish by sequencing (GBS). The spread of muscle mercury content across locations was considerable, ranging from 21.5 to 327 ng/g dry weight (DW). We then conducted a genome-wide association study (GWAS) between 28,450 single nucleotide polymorphisms (SNPs) and the accumulated levels of mercury, using different approaches. Based on a linear mixed model analysis, the GWAS yielded multiple hits with a single top hit on Chromosome 4, with eight more SNPs suggestive of association. A second approach, a latent factor mixed model analysis, highlighted one single SNP on Chromosome 11. Finally, an outlier test identified one additional SNP on Chromosome 4 that appeared under selection. Out of all ten SNPs we identified as associated with mercury in muscle, three SNPs all located on Chromosome 4 and positioned within a 2.5 kb distance of an annotated gene. Based on these results and the genome coverage of our SNPs, we conclude that the selective effect of mercury pollution in Flanders causes a significant association with at least one locus on Chromosome 4 in three-spined stickleback.
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Affiliation(s)
- Federico C. F. Calboli
- Laboratory of Biodiversity and Evolutionary GenomicsKU LeuvenLeuvenBelgium
- Present address:
Natural Resources Institute Finland (Luke)HelsinkiFinland
| | - Vyshal Delahaut
- Department of BiologySystemic Physiological and Ecotoxicological Research (SPHERE)University of AntwerpAntwerpenBelgium
| | - Io Deflem
- Laboratory of Biodiversity and Evolutionary GenomicsKU LeuvenLeuvenBelgium
| | | | - Bart Hellemans
- Laboratory of Biodiversity and Evolutionary GenomicsKU LeuvenLeuvenBelgium
| | - Anna Kordas
- Laboratory of Biodiversity and Evolutionary GenomicsKU LeuvenLeuvenBelgium
| | | | - Lieven Bervoets
- Department of BiologySystemic Physiological and Ecotoxicological Research (SPHERE)University of AntwerpAntwerpenBelgium
| | - Gudrun De Boeck
- Department of BiologySystemic Physiological and Ecotoxicological Research (SPHERE)University of AntwerpAntwerpenBelgium
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Lyons K, Adams DH, Bizzarro JJ. Evaluation of muscle tissue as a non-lethal proxy for liver and brain organic contaminant loads in an elasmobranch, the Bonnethead Shark (Sphyrna tiburo). MARINE POLLUTION BULLETIN 2021; 167:112327. [PMID: 33873040 DOI: 10.1016/j.marpolbul.2021.112327] [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: 11/27/2020] [Revised: 03/25/2021] [Accepted: 03/27/2021] [Indexed: 06/12/2023]
Abstract
Elasmobranch ecotoxicological investigations are complicated because accessing organs that accumulate organic contaminants is usually lethal. Several metrics among liver, muscle, and brain were evaluated to determine their relative organic contaminant loads and the efficacy of using muscle as a non-lethal proxy for liver. Liver contained the highest concentrations (368-4020 ng/g wet weigth [ww]) and greatest estimated total load of contaminants. Brain had higher toxin concentrations than muscle (4.18-84.2 ng/g ww versus 0.94-4.73 ng/g ww). Liver and brain were similar to each other in terms of contaminant detection occurrence and signature overlap, whereas muscle poorly reflected those of liver and brain. However, the identity of contaminants detected in muscle constituted those that substantially contributed to summed liver and brain concentrations. Thus, studies utilizing muscle as a non-lethal liver alternative to study organic contaminant exposure in elasmobranchs should craft questions with care, considering its limited ability to serve as an accurate proxy.
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Affiliation(s)
- Kady Lyons
- Georgia Aquarium, 225 Baker St NW, Atlanta, GA 30313, USA.
| | - Douglas H Adams
- Florida Fish and Wildlife Conservation Commission, Fish and Wildlife Research Institute, Melbourne FL, USA
| | - Joseph J Bizzarro
- Moss Landing Marine Laboratories, Moss Landing CA, USA; University of California Santa Cruz, Santa Cruz CA, USA
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Martyniuk CJ, Mehinto AC, Denslow ND. Organochlorine pesticides: Agrochemicals with potent endocrine-disrupting properties in fish. Mol Cell Endocrinol 2020; 507:110764. [PMID: 32112812 PMCID: PMC10603819 DOI: 10.1016/j.mce.2020.110764] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 02/01/2020] [Accepted: 02/18/2020] [Indexed: 12/24/2022]
Abstract
Organochlorine pesticides (OCPs) are persistent environmental contaminants that act as endocrine disruptors and organ system toxicants. These pesticides (e.g. dichlorodiphenyltrichloroethane (DDT), dieldrin, toxaphene, among others) are ranked as some of the most concerning chemicals for human health. These pesticides (1) act as teratogens, (2) are neuroendocrine disruptors, (3) suppress the immune and reproductive systems, and (4) dysregulate lipids and metabolism. Using a computational approach, we revealed enriched endocrine-related pathways in the Comparative Toxicogenomics Database sensitive to this chemical class, and these included reproduction (gonadotropins, estradiol, androgen, steroid biosynthesis, oxytocin), thyroid hormone, and insulin. Insight from the Tox21 and ToxCast programs confirm that these agrochemicals activate estrogen receptors, androgen receptors, and retinoic acid receptors with relatively high affinity, although differences exist in their potency. We propose an adverse outcome pathway for OCPs toxicity in the fish testis as a novel contribution to further understanding of OCP-induced toxicity. Organochlorine pesticides, due to their persistence and high toxicity to aquatic and terrestrial wildlife as well as humans, remain significant agrochemicals of concern.
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Affiliation(s)
- Christopher J Martyniuk
- Department of Physiological Sciences, Center for Environmental and Human Toxicology, UF, USA; Genetics Institute, College of Veterinary Medicine, University of Florida, Gainesville, FL, 32611, USA
| | - Alvine C Mehinto
- Southern California Coastal Water Research Project Authority, Costa Mesa, CA, 92626, CA, USA
| | - Nancy D Denslow
- Department of Physiological Sciences, Center for Environmental and Human Toxicology, UF, USA; Genetics Institute, College of Veterinary Medicine, University of Florida, Gainesville, FL, 32611, USA.
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An Evaluation of Restocking Practice and Demographic Stock Assessment Methods for Cryptic Juvenile European Eel in Upland Rivers. SUSTAINABILITY 2020. [DOI: 10.3390/su12031124] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Restocking of the critically endangered European eel Anguilla anguilla is widespread, but it is rarely scientifically evaluated. Methods used to assess its associated performance by estimating the survival rate and implement restocking for maximum recruitment in rivers have not yet been investigated. Based on two glass eel restocking events using a single release site/point and multiple sites per river performed in upland rivers (>340 km from the North Sea), the recruitment success of stocked eels was scientifically evaluated during a 3-year study using multiple capture-mark-recapture methods and mobile telemetry. We compared the observed data with the data estimated from the Telemetry, De Lury and Jolly-Seber stock assessment methods. For recruitment data, Telemetry was very close to Jolly-Seber, an appropriate stock assessment method for open populations. Using the best model of Jolly-Seber, survival probability was higher (>95%) in both restocking practices, but recruitment yields were higher and densities of stocked eels were lower in multiple sites compared to a single site. Our results suggest that Telemetry can help to rapidly assess cryptic juvenile eel stocks with good accuracy under a limited number of capture-mark-recapture sessions. Artificial dispersal of glass eels on several productive habitats/sites per river appears to be the better-suited practice for restocking.
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Windsor FM, Pereira MG, Tyler CR, Ormerod SJ. River organisms as indicators of the distribution and sources of persistent organic pollutants in contrasting catchments. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 255:113144. [PMID: 31526913 DOI: 10.1016/j.envpol.2019.113144] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 08/29/2019] [Accepted: 08/29/2019] [Indexed: 06/10/2023]
Abstract
Persistent organic pollutants (POPs) continue to threaten aquatic organisms, but risk assessments are restricted by poor knowledge of the distribution and quantity of these substances in different biota. Assessments on aquatic invertebrates are particularly scarce. Here, we investigate variation in polybrominated diphenyl ethers (PBDEs), polychlorinated biphenyls (PCBs) and organochlorines (OCs) in sediments, biofilms, macroinvertebrates and fish across rivers in South Wales (UK). Persistent PCB (-118, -153, -180) and PBDE congeners (BDE-47, -99, -100), and OCs (p,p'-dichlorodiphenyldichloroethylene [p,p'-DDE] and dieldrin [HEOD]) dominated the POPs detected, indicating links to historical emissions. Low concentrations of less persistent PBDEs, PCBs and OCs, however, suggest more contemporary sources. Concentrations of POPs were 2-22 times greater in fish than invertebrates, but their detection frequency (>90%) and concentrations (0-304 ng g-1 wet weight) were higher in these organisms than in sediments or biofilms (<10%; 0-12 ng g-1 wet weight). Invertebrates and fish also contained several PCB congeners (28, 52, 77 and 105) and p,p'-dichlorodiphenyltrichloroethane (p,p'-DDT) that were not detected in the environmental samples. Concentrations of PBDEs, PCBs and OCs differed among invertebrate taxa and feeding guilds. After controlling for significant variation among sample types and taxa, PBDEs were found to increase with urban land cover, while increased PCBs were associated with urban land cover and wastewater discharge. These data illustrate how body burdens of POPs across invertebrate and fish taxa provide valuable information on the spatial variation and likely sources of persistent pollutants in freshwater ecosystems. More work is required to resolve differences in POP contamination between taxonomic groups.
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Affiliation(s)
- Fredric M Windsor
- Water Research Institute, Cardiff University, UK; Department of Biosciences, University of Exeter, UK.
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10
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Jamwal A, Saibu Y, MacDonald TC, George GN, Niyogi S. The effects of dietary selenomethionine on tissue-specific accumulation and toxicity of dietary arsenite in rainbow trout (Oncorhynchus mykiss) during chronic exposure. Metallomics 2019; 11:643-655. [DOI: 10.1039/c8mt00309b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Selenomethionine facilitated arsenic deposition in the brain and likely in other tissues, possibly via bio-complexation. Elevated dietary selenomethionine can increase the tissue-specific accumulation and toxicity of As3+ in fish during chronic dietary exposure.
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Affiliation(s)
- Ankur Jamwal
- Department of Biology
- University of Saskatchewan
- Saskatoon
- Canada
| | - Yusuf Saibu
- Toxicology Centre
- University of Saskatchewan
- Saskatoon
- Canada
| | | | - Graham N. George
- Toxicology Centre
- University of Saskatchewan
- Saskatoon
- Canada
- Department of Geology
| | - Som Niyogi
- Department of Biology
- University of Saskatchewan
- Saskatoon
- Canada
- Toxicology Centre
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Genetic population diversity of European eel Anguilla anguilla elvers in two Egyptian water bodies, Rosetta (Rachid) estuary and Burullus Lake. Genes Genomics 2017. [DOI: 10.1007/s13258-017-0572-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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