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Koné DCE, Jacob S, Huet M, Philippe H, Legrand D. The phenotypic and demographic response to the combination of copper and thermal stressors strongly varies within the ciliate species, Tetrahymena thermophila. ENVIRONMENTAL MICROBIOLOGY REPORTS 2024; 16:e13307. [PMID: 39344497 PMCID: PMC11440147 DOI: 10.1111/1758-2229.13307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 06/08/2024] [Indexed: 10/01/2024]
Abstract
Copper pollution can alter biological and trophic functions. Organisms can utilise different tolerance strategies, including accumulation mechanisms (intracellular vacuoles, external chelation, etc.) to maintain themselves in copper-polluted environments. Accumulation mechanisms can influence the expression of other phenotypic traits, allowing organisms to deal with copper stress. Whether copper effects on accumulation strategies interact with other environmental stressors such as temperature and how this may differ within species are still unsolved questions. Here, we tested experimentally whether the combined effect of copper and temperature modulates traits linked to demography, morphology, movement and accumulation in six strains of the ciliate Tetrahymena thermophila. We also explored whether copper accumulation might modulate environmental copper concentration effects on phenotypic and demographic traits. Results showed high intraspecific variability in the phenotypic and demographic response to copper, with interactive effects between temperature and copper. In addition, they suggested an attenuation effect of copper accumulation on the sensitivity of traits to copper, but with great variation between strains, temperatures and copper concentrations. Diversity of responses among strains and their thermal dependencies pleads for the integration of intraspecific variability and multiple stressors approaches in ecotoxicological studies, thus improving the reliability of assessments of the effects of pollutants on biodiversity.
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Affiliation(s)
| | - Staffan Jacob
- Centre National de la Recherche ScientifiqueStation d'Ecologie Théorique et Expérimentale, UAR2029MoulisAriègeFrance
| | - Michèle Huet
- Centre National de la Recherche ScientifiqueStation d'Ecologie Théorique et Expérimentale, UAR2029MoulisAriègeFrance
| | - Hervé Philippe
- Centre National de la Recherche ScientifiqueStation d'Ecologie Théorique et Expérimentale, UAR2029MoulisAriègeFrance
| | - Delphine Legrand
- Centre National de la Recherche ScientifiqueStation d'Ecologie Théorique et Expérimentale, UAR2029MoulisAriègeFrance
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2
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Koll R, Theilen J, Hauten E, Woodhouse JN, Thiel R, Möllmann C, Fabrizius A. Network-based integration of omics, physiological and environmental data in real-world Elbe estuarine Zander. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 942:173656. [PMID: 38830414 DOI: 10.1016/j.scitotenv.2024.173656] [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: 03/04/2024] [Revised: 05/28/2024] [Accepted: 05/28/2024] [Indexed: 06/05/2024]
Abstract
Coastal and estuarine environments are under endogenic and exogenic pressures jeopardizing survival and diversity of inhabiting biota. Information of possible synergistic effects of multiple (a)biotic stressors and holobiont interaction are largely missing in estuaries like the Elbe but are of importance to estimate unforeseen effects on animals' physiology. Here, we seek to leverage host-transcriptional RNA-seq and gill mucus microbial 16S rRNA metabarcoding data coupled with physiological and abiotic measurements in a network analysis approach to decipher the impact of multiple stressors on the health of juvenile Sander lucioperca along one of the largest European estuaries. We find mesohaline areas characterized by gill tissue specific transcriptional responses matching osmosensing and tissue remodeling. Liver transcriptomes instead emphasized that zander from highly turbid areas were undergoing starvation which was supported by compromised body condition. Potential pathogenic bacteria, including Shewanella, Acinetobacter, Aeromonas and Chryseobacterium, dominated the gill microbiome along the freshwater transition and oxygen minimum zone. Their occurrence coincided with a strong adaptive and innate transcriptional immune response in host gill and enhanced energy demand in liver tissue supporting their potential pathogenicity. Taken together, we show physiological responses of a fish species and its microbiome to abiotic factors whose impact is expected to increase with consequences of climate change. We further present a method for the close-meshed detection of the main stressors and bacterial species with disease potential in a highly productive ecosystem.
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Affiliation(s)
- Raphael Koll
- University of Hamburg, Institute of Cell- and Systems Biology of Animals, Molecular Animal Physiology, Germany.
| | - Jesse Theilen
- University of Hamburg, Department of Biology, Biodiversity Research, Germany
| | - Elena Hauten
- University of Hamburg, Institute of Marine Ecosystem and Fishery Science, Marine ecosystem dynamics, Germany
| | - Jason Nicholas Woodhouse
- University of Hamburg, Institute of Cell- and Systems Biology of Animals, Molecular Animal Physiology, Germany; Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Microbial and phytoplankton Ecology, Germany
| | - Ralf Thiel
- Leibniz Institute for the Analysis of Biodiversity Change (LIB) - Hamburg site, Centre for Taxonomy & Morphology, Zoological Museum, Germany; University of Hamburg, Department of Biology, Biodiversity Research, Germany
| | - Christian Möllmann
- University of Hamburg, Institute of Marine Ecosystem and Fishery Science, Marine ecosystem dynamics, Germany
| | - Andrej Fabrizius
- University of Hamburg, Institute of Cell- and Systems Biology of Animals, Molecular Animal Physiology, Germany
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3
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Gouthier L, Jacquin L, Giraud J, Jean S, Hansson SV. Metal Contaminants in Fish: Blood as a Potential Non-lethal Monitoring Tool. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2023; 111:12. [PMID: 37422515 DOI: 10.1007/s00128-023-03762-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 06/07/2023] [Indexed: 07/10/2023]
Abstract
The use of fish to monitor metal contamination is well established, but existing studies often focus on internal tissues that require the sacrifice of organisms. Developing non-lethal methods is thus a scientific challenge to enable large scale biomonitoring of wildlife health. We explored blood as a potential non-lethal monitoring tool for metal contamination in brown trout (Salmo trutta fario) as a model species. First, we investigated differences in metal contamination loads (i.e., Cr, Cu, Se, Zn, As, Cd, Pb and Sb) in different blood components (whole blood, red blood cells and plasma). Whole blood was reliable to measure most metals, implying that blood centrifugation is not necessary, thus minimizing sample preparation time. Second, we measured the within individual distribution of metals across tissues (whole blood, muscle, liver, bile, kidney and gonads) to test if blood could be a reliable monitoring tool compared to other tissues. Results show that the whole blood was reliable compared to muscle and bile to measure the levels of metals such as Cr, Cu, Se, Zn, Cd and Pb. This study opens the possibility for future ecotoxicological studies in fish to use blood instead of internal tissues to quantify some metals, thus reducing the negative impacts of biomonitoring on wildlife.
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Affiliation(s)
- Laurine Gouthier
- Laboratoire écologie fonctionnelle et environnement, CNRS/INP, Université de Toulouse, Avenue de l'Agrobiopole, 31326, Castanet Tolosan Cedex, France.
- Laboratoire Evolution & Diversité Biologique, UMR5174, Université Toulouse III - Paul Sabatier, CNRS/UPS/IRD, 118 route de Narbonne, 31062, Toulouse Cedex 9, France.
| | - Lisa Jacquin
- Laboratoire Evolution & Diversité Biologique, UMR5174, Université Toulouse III - Paul Sabatier, CNRS/UPS/IRD, 118 route de Narbonne, 31062, Toulouse Cedex 9, France
- Institut Universitaire de France IUF, Paris, France
| | - Jules Giraud
- Laboratoire écologie fonctionnelle et environnement, CNRS/INP, Université de Toulouse, Avenue de l'Agrobiopole, 31326, Castanet Tolosan Cedex, France
| | - Séverine Jean
- Laboratoire écologie fonctionnelle et environnement, CNRS/INP, Université de Toulouse, Avenue de l'Agrobiopole, 31326, Castanet Tolosan Cedex, France
| | - Sophia V Hansson
- Laboratoire écologie fonctionnelle et environnement, CNRS/INP, Université de Toulouse, Avenue de l'Agrobiopole, 31326, Castanet Tolosan Cedex, France
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4
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Petitjean Q, Laffaille P, Perrault A, Cousseau M, Jean S, Jacquin L. Adaptive plastic responses to metal contamination in a multistress context: a field experiment in fish. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:55678-55698. [PMID: 36894734 DOI: 10.1007/s11356-023-26189-w] [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] [Accepted: 02/24/2023] [Indexed: 06/18/2023]
Abstract
Wild populations often differ in their tolerance to environmental stressors, but intraspecific variability is rarely taken into account in ecotoxicology. In addition, plastic responses to multiple stressors have rarely been investigated in realistic field conditions. In this study, we compared the responses to metal contamination of gudgeon populations (Gobio occitaniae) differing in their past chronic exposure to metal contamination, using a reciprocal transplant experiment and an immune challenge mimicking a parasite attack to test for potential effects of multiple stressors across biological levels. We measured fish survival and traits involved in metal bioaccumulation, oxidative stress, immunity, cell apoptosis, and energy management to decipher underpinning physiological mechanisms across biological levels (i.e., gene expression, cell, organism). Fish from the two replicate High Contamination sites had higher survival when transferred into contaminated sites, suggesting a local adaptation to the contaminated site, possibly explained by higher levels of detoxification and antioxidant capacity but with potential higher apoptosis costs compared to their naïve counterparts. We found no evidence of co- or maladaptation to the immune stressor, suggesting no specific costs to face pathogens. In the emerging field of evolutionary ecotoxicology, this study underlines the need to consider intraspecific variability to better understand the effects of pollution in heterogeneous populations.
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Affiliation(s)
- Quentin Petitjean
- Laboratoire Ecologie Fonctionnelle et Environnement, UMR5245 LEFE, Université de Toulouse, UPS, CNRS, INP-ENSAT, Auzeville-Tolosane, France.
- Laboratoire Evolution et Diversité Biologique, UMR5174 EDB, Université de Toulouse, UPS, CNRS, IRD, Toulouse, France.
- Long-Term Socio-Ecological Research Platform LTSER France, Zone Atelier PYGAR « Pyrénées-Garonne », Auzeville-Tolosane, France.
- Institut Sophia Agrobiotech, UMR1355 INRAE, UMR7254 CNRS, Université Côte d'Azur, Sophia-Antipolis, France.
| | - Pascal Laffaille
- Laboratoire Ecologie Fonctionnelle et Environnement, UMR5245 LEFE, Université de Toulouse, UPS, CNRS, INP-ENSAT, Auzeville-Tolosane, France
| | - Annie Perrault
- Laboratoire Ecologie Fonctionnelle et Environnement, UMR5245 LEFE, Université de Toulouse, UPS, CNRS, INP-ENSAT, Auzeville-Tolosane, France
| | - Myriam Cousseau
- Laboratoire Ecologie Fonctionnelle et Environnement, UMR5245 LEFE, Université de Toulouse, UPS, CNRS, INP-ENSAT, Auzeville-Tolosane, France
| | - Séverine Jean
- Laboratoire Ecologie Fonctionnelle et Environnement, UMR5245 LEFE, Université de Toulouse, UPS, CNRS, INP-ENSAT, Auzeville-Tolosane, France
- Long-Term Socio-Ecological Research Platform LTSER France, Zone Atelier PYGAR « Pyrénées-Garonne », Auzeville-Tolosane, France
| | - Lisa Jacquin
- Laboratoire Evolution et Diversité Biologique, UMR5174 EDB, Université de Toulouse, UPS, CNRS, IRD, Toulouse, France
- Long-Term Socio-Ecological Research Platform LTSER France, Zone Atelier PYGAR « Pyrénées-Garonne », Auzeville-Tolosane, France
- Institut Universitaire de France, Paris, France
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Salmón P, Burraco P. Telomeres and anthropogenic disturbances in wildlife: A systematic review and meta-analysis. Mol Ecol 2022; 31:6018-6039. [PMID: 35080073 PMCID: PMC9790527 DOI: 10.1111/mec.16370] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 12/10/2021] [Accepted: 01/13/2022] [Indexed: 01/31/2023]
Abstract
Human-driven environmental changes are affecting wildlife across the globe. These challenges do not influence species or populations to the same extent and therefore a comprehensive evaluation of organismal health is needed to determine their ultimate impact. Evidence suggests that telomeres (the terminal chromosomal regions) are sensitive to environmental conditions and have been posited as a surrogate for animal health and fitness. Evaluation of their use in an applied ecological context is still scarce. Here, using information from molecular and occupational biomedical studies, we aim to provide ecologists and evolutionary biologists with an accessible synthesis of the links between human disturbances and telomere length. In addition, we perform a systematic review and meta-analysis on studies measuring telomere length in wild/wild-derived animals facing anthropogenic disturbances. Despite the relatively small number of studies to date, our meta-analysis revealed a significant small negative association between disturbances and telomere length (-0.092 [-0.153, -0.031]; n = 28; k = 159). Yet, our systematic review suggests that the use of telomeres as a biomarker to understand the anthropogenic impact on wildlife is limited. We propose some research avenues that will help to broadly evaluate their suitability: (i) further causal studies on the link between human disturbances and telomeres; (ii) investigating the organismal implications, in terms of fitness and performance, of a given telomere length in anthropogenically disturbed scenarios; and (iii) better understanding of the underlying mechanisms of telomere dynamics. Future studies in these facets will help to ultimately determine their role as markers of health and fitness in wildlife facing anthropogenic disturbances.
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Affiliation(s)
- Pablo Salmón
- Institute of Biodiversity, Animal Health and Comparative MedicineUniversity of GlasgowGlasgowUK,Department of Plant Biology and EcologyFaculty of Science and TechnologyUniversity of the Basque Country (UPV/EHU)LeioaSpain
| | - Pablo Burraco
- Institute of Biodiversity, Animal Health and Comparative MedicineUniversity of GlasgowGlasgowUK
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Lebigre C, Aminot Y, Munschy C, Drogou M, Le Goff R, Briant N, Chouvelon T. Trace metal elements and organic contaminants are differently related to the growth and body condition of wild European sea bass juveniles. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2022; 248:106207. [PMID: 35635982 DOI: 10.1016/j.aquatox.2022.106207] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 04/28/2022] [Accepted: 05/22/2022] [Indexed: 06/15/2023]
Abstract
Chemical contaminants are one of the causes of the ongoing degradation of coastal and estuarine nurseries, key functional habitats in which the juveniles of many marine species grow. As chemical contaminants can cause a decrease in the energy available and induce defence mechanisms reducing the amount of energy allocated to life history traits, quantifying their effect on the fitness of juvenile fish is key to understand their population-level consequences. However, these effects are primarily estimated experimentally or in the wild but on a limited number of contaminants or congeners that do not reflect the wide variety of chemical contaminants to which juvenile fish are exposed. To address this issue, we measured concentrations of 14 trace metal elements (TMEs) and bioaccumulative organic contaminants (OCs) in European sea bass juveniles (1-year-old) from three major French nurseries (Seine, Loire and Gironde estuaries). We tested the hypotheses that (i) levels and profiles of contaminants differed among studied nurseries, and ii) fish growth and body condition (based on morphometric measurements and muscle C:N ratio) were lower in individuals with higher contaminant concentrations. Multivariate analyses showed that each nursery had distinct contaminant profiles for both TMEs and OCs, confirming the specific contamination of each estuary, and the large array of contaminants accumulated by sea bass juveniles. Increasing concentrations in some TMEs were associated to decreased growth, and TMEs were consistently related to lower fish body condition. The effect of OCs was more difficult to pinpoint possibly due to operational constraints (i.e., analyses on pooled fish) with contrasting results (i.e., higher growth and decreased body condition). Overall, this study shows that chemical contaminants are related to lower fish growth and body condition at an early life stage in the wild, an effect that can have major consequences if sustained in subsequent ages and associated with a decline in survival and/or reproductive success.
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Affiliation(s)
- Christophe Lebigre
- UMR DECOD (Ecosystem Dynamics and Sustainability), IFREMER, INRAE, Institut Agro, ZI Pointe du Diable, Plouzané F-29280, France.
| | - Yann Aminot
- IFREMER, CCEM Contamination Chimique des Écosystèmes Marins, Nantes F-44000, France
| | - Catherine Munschy
- IFREMER, CCEM Contamination Chimique des Écosystèmes Marins, Nantes F-44000, France
| | - Mickaël Drogou
- UMR DECOD (Ecosystem Dynamics and Sustainability), IFREMER, INRAE, Institut Agro, ZI Pointe du Diable, Plouzané F-29280, France
| | - Ronan Le Goff
- UMR DECOD (Ecosystem Dynamics and Sustainability), IFREMER, INRAE, Institut Agro, ZI Pointe du Diable, Plouzané F-29280, France
| | - Nicolas Briant
- IFREMER, CCEM Contamination Chimique des Écosystèmes Marins, Nantes F-44000, France
| | - Tiphaine Chouvelon
- IFREMER, CCEM Contamination Chimique des Écosystèmes Marins, Nantes F-44000, France; Observatoire Pelagis, UAR 3462, La Rochelle Université - CNRS, La Rochelle F-17000, France
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7
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Makaras T, Razumienė J, Gurevičienė V, Sauliutė G, Stankevičiūtė M. Technical suitability and reliability of an in vivo and non-invasive biosensor-type glucose assessment as a potential biomarker for multiple stressors in fishes: an evaluation on Salmonids. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:41187-41206. [PMID: 35089518 DOI: 10.1007/s11356-022-18546-y] [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: 08/23/2021] [Accepted: 01/03/2022] [Indexed: 06/14/2023]
Abstract
Regardless of the wide use of glucose measurements in stress evaluation, there are some inconsistencies in its acceptance as a stress marker. To meet the challenge and test the reliability/suitability of glucose measurement in practice, we simulated different environmental/anthropogenic exposure scenarios in this study. We aimed to provoke stress in fish followed by a 2-week stress recovery period and under the cumulative effect of leachate fish exposed to pathogenic oomycetes (Saprolegnia parasitica) to represent a possible infection in fish. We selected stream-resident and anadromous brown trout ecotypes (Salmo trutta) representing salmonids with different migratory behaviour strategies. Here, we analysed glucose content in fish-holding water, blood and gills to determine glucose suitability as a potential biomarker of fish response to environmental challenges. Additionally, swimming behavioural parameters and haematocrit were measured. The results indicated that the quantity of glucose released in the holding water of stressed fish increased considerably and remained substantially higher throughout the stress recovery period than the control level. Correspondingly, the circulating levels of glucose in blood and gills decreased over time in fish exposed to different stressors. A significant decrease in swimming activity of fish was observed during the first hours of leachate exposure and increased in fish exposed to S. parasitica compared to control. Our study is the first to ensure the validity and reliability of glucose response in evaluating physiological stress in fish under chemical and biological stimuli, indicating its sensitivity and response range of glucose measurement in fish-holding water.
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Affiliation(s)
- Tomas Makaras
- Nature Research Centre, Akademijos St. 2, 08412, Vilnius, Lithuania.
- Life Sciences Center, Vilnius University, Saulėtekio Ave 7, 10257, Vilnius, Lithuania.
| | - Julija Razumienė
- Life Sciences Center, Vilnius University, Saulėtekio Ave 7, 10257, Vilnius, Lithuania
| | - Vidutė Gurevičienė
- Life Sciences Center, Vilnius University, Saulėtekio Ave 7, 10257, Vilnius, Lithuania
| | - Gintarė Sauliutė
- Nature Research Centre, Akademijos St. 2, 08412, Vilnius, Lithuania
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8
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Segner H, Rehberger K, Bailey C, Bo J. Assessing Fish Immunotoxicity by Means of In Vitro Assays: Are We There Yet? Front Immunol 2022; 13:835767. [PMID: 35296072 PMCID: PMC8918558 DOI: 10.3389/fimmu.2022.835767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 02/01/2022] [Indexed: 11/28/2022] Open
Abstract
There is growing awareness that a range of environmental chemicals target the immune system of fish and may compromise the resistance towards infectious pathogens. Existing concepts to assess chemical hazards to fish, however, do not consider immunotoxicity. Over recent years, the application of in vitro assays for ecotoxicological hazard assessment has gained momentum, what leads to the question whether in vitro assays using piscine immune cells might be suitable to evaluate immunotoxic potentials of environmental chemicals to fish. In vitro systems using primary immune cells or immune cells lines have been established from a wide array of fish species and basically from all immune tissues, and in principal these assays should be able to detect chemical impacts on diverse immune functions. In fact, in vitro assays were found to be a valuable tool in investigating the mechanisms and modes of action through which environmental agents interfere with immune cell functions. However, at the current state of knowledge the usefulness of these assays for immunotoxicity screening in the context of chemical hazard assessment appears questionable. This is mainly due to a lack of assay standardization, and an insufficient knowledge of assay performance with respect to false positive or false negative signals for the different toxicant groups and different immune functions. Also the predictivity of the in vitro immunotoxicity assays for the in vivo immunotoxic response of fishes is uncertain. In conclusion, the currently available database is too limited to support the routine application of piscine in vitro assays as screening tool for assessing immunotoxic potentials of environmental chemicals to fish.
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Affiliation(s)
- Helmut Segner
- Centre for Fish and Wildlife Health, Department of Pathobiology and Infectious Diseases, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Kristina Rehberger
- Centre for Fish and Wildlife Health, Department of Pathobiology and Infectious Diseases, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | | | - Jun Bo
- Laboratory of Marine Biology and Ecology, Third Institute of Oceanography, Xiamen, China
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Molbert N, Angelier F, Alliot F, Ribout C, Goutte A. Fish from urban rivers and with high pollutant levels have shorter telomeres. Biol Lett 2021; 17:20200819. [PMID: 33465329 DOI: 10.1098/rsbl.2020.0819] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Environmental pressures, such as urbanization and exposure to pollutants may jeopardize survival of free-living animals. Yet, much remains to be known about physiological and ecological responses to currently-released pollutants, especially in wild vertebrate ectotherms. We tested the effect of urbanization and pollution (phthalates, organochlorine and pyrethroid pesticides, polychlorobiphenyls, polybromodiphenylethers, polycyclic aromatic hydrocarbons, and some of their metabolites) on telomere length, a suggested biomarker of life expectancy, in the European chub, Squalius cephalus, from urban and agricultural rivers of the Marne hydrographic network, France. We showed that telomere length was reduced in chub from urban rivers. Moreover, among the wide range of anthropogenic contaminants investigated, high levels of phthalate metabolites in liver were associated with shorter telomeres. This study suggests that urbanization and chemical pollution may compromise survival of wild fish, by accelerating telomere attrition.
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Affiliation(s)
- Noëlie Molbert
- Sorbonne Université, CNRS, EPHE, UMR METIS, 75005 Paris, France
| | - Frédéric Angelier
- Centre d'Etudes Biologiques de Chizé (CEBC), UMR 7372 CNRS, La Rochelle Université, 79360 Villiers en Bois, France
| | - Fabrice Alliot
- Sorbonne Université, CNRS, EPHE, UMR METIS, 75005 Paris, France.,EPHE, PSL Research University, 75005 Paris, France
| | - Cécile Ribout
- Centre d'Etudes Biologiques de Chizé (CEBC), UMR 7372 CNRS, La Rochelle Université, 79360 Villiers en Bois, France
| | - Aurélie Goutte
- Sorbonne Université, CNRS, EPHE, UMR METIS, 75005 Paris, France.,EPHE, PSL Research University, 75005 Paris, France
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