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Kuciński M, Jakubowska-Lehrmann M, Góra A, Mirny Z, Nadolna-Ałtyn K, Szlinder-Richert J, Ocalewicz K. Population Genetic Study on the European Flounder ( Platichthys flesus) from the Southern Baltic Sea Using SNPs and Microsatellite Markers. Animals (Basel) 2023; 13:ani13091448. [PMID: 37174485 PMCID: PMC10177365 DOI: 10.3390/ani13091448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/14/2023] [Accepted: 04/19/2023] [Indexed: 05/15/2023] Open
Abstract
The European flounder (Platichthys flesus), which is closely related to the recently discovered Baltic flounder (Platichthys solemdali), is currently the third most commercially fished species in the Baltic Sea. According to the available data from the Polish Fisheries Monitoring Center and fishermen's observations, the body condition indices of the species in the Baltic Sea have declined in recent years. The aim of the present study was to obtain information on the current patterns of genetic variability and the population structure of the European flounder and to verify whether the Baltic flounder is present in the southern Baltic Sea. Moreover, we aimed to verify whether the observed decline in the body condition indices of the species in the Baltic Sea might be associated with adaptive alterations in its gene pool due to increased fishing pressure. For this purpose, 190 fish were collected from four locations along the central coastline of Poland, i.e., Mechelinki, Władysławowo, the Vistula Lagoon in 2018, and the Słupsk Bank in 2020. The fish were morphologically analyzed and then genetically screened by the application of nineteen microsatellite DNA and two diagnostic SNP markers. The examined European flounder specimens displayed a high level of genetic diversity (PIC = 0.832-0.903, I = 2.579-2.768). A lack of significant genetic differentiation (Fst = 0.004, p > 0.05) was observed in all the examined fish, indicating that the European flounder in the sampled area constitutes a single genetic cluster. A significant deficiency in heterozygotes (Fis = 0.093, p < 0.05) and overall deviations from Hardy-Weinberg expectations (H-WE) were only detected in fish sampled from the Słupsk Bank. The estimated effective population size (Ne) among the sampled fish groups varied from 712 (Słupsk Bank) to 10,115 (Władysławowo and Mechelinki). However, the recorded values of the Garza-Williamson indicator (M = 0.574-0.600) and the lack of significant (p > 0.05) differences in Heq > He under the SMM model did not support the species' population size changes in the past. The applied SNP markers did not detect the presence of the Baltic flounder among the fish sampled from the studied area. The analysis of an association between biological traits and patterns of genetic diversity did not detect any signs of directional selection or density-dependent adaptive changes in the gene pool of the examined fish that might be caused by increased fishing pressure.
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Affiliation(s)
- Marcin Kuciński
- Department of Marine Biology and Ecology, Institute of Oceanography, University of Gdansk, Piłsudskiego Ave. 46, 81-378 Gdynia, Poland
| | - Magdalena Jakubowska-Lehrmann
- Department of Fisheries Oceanography and Marine Ecology, National Marine Fisheries Research Institute, Kołłątaja 1 Street, 81-332 Gdynia, Poland
| | - Agnieszka Góra
- Department of Food and Environmental Chemistry, National Marine Fisheries Research Institute, Kołłątaja 1 Street, 81-332 Gdynia, Poland
| | - Zuzanna Mirny
- Department of Fisheries Resources, National Marine Fisheries Research Institute, Kołłątaja 1 Street, 81-332 Gdynia, Poland
| | - Katarzyna Nadolna-Ałtyn
- Department of Fisheries Resources, National Marine Fisheries Research Institute, Kołłątaja 1 Street, 81-332 Gdynia, Poland
| | - Joanna Szlinder-Richert
- Department of Food and Environmental Chemistry, National Marine Fisheries Research Institute, Kołłątaja 1 Street, 81-332 Gdynia, Poland
| | - Konrad Ocalewicz
- Department of Marine Biology and Ecology, Institute of Oceanography, University of Gdansk, Piłsudskiego Ave. 46, 81-378 Gdynia, Poland
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Quina AS, Durão AF, Mathias MDL. Evidence of micro-evolution in Crocidura russula from two abandoned heavy metal mines: potential use of Cytb, CYP1A1, and p53 as gene biomarkers. ECOTOXICOLOGY (LONDON, ENGLAND) 2021; 30:1969-1982. [PMID: 34505200 DOI: 10.1007/s10646-021-02472-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/19/2021] [Indexed: 06/13/2023]
Abstract
Heavy metals accumulated in the environment due to the mining industry may impact on the health of exposed wild animals with consequences at the population level via survival and selection of the most resistant individuals. The detection and quantification of shifts in gene frequencies or in the genetic structure in populations inhabiting polluted sites may be used as early indicators of environmental stress and reveal potential 'candidate gene biomarkers' for environmental health assessment. We had previously observed that specimens of the Greater white-toothed shrew (Crocidura russula) from two heavy metal mines in Southern Portugal (the Aljustrel and the Preguiça mines) carried physiological alterations compared to shrews from an unpolluted site. Here, we further investigated whether these populations showed genetic differences in genes relevant for physiological homeostasis and/or that are associated with pathways altered in animals living under chronic exposure to pollution, and which could be used as biomarkers. We analysed the mitochondrial cytochrome b (Cytb) gene and intronic and/or exonic regions of four nuclear genes: CYP1A1, LCAT, PRPF31, and p53. We observed (1) population differences in allele frequencies, types of variation, and diversity parameters in the Cytb, CYP1A1, and p53 genes; (2) purifying selection of Cytb in the mine populations; (3) genetic differentiation of the two mine populations from the reference by the p53 gene. Adding to our previous observations with Mus spretus, we provide unequivocal evidence of a population effect exerted by the contaminated environment of the mines on the local species of small mammals.
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Affiliation(s)
- Ana Sofia Quina
- CESAM - Centro de Estudos do Ambiente e do Mar, Departamento de Biologia Universidade de Aveiro Campus Universitário de Santiago, 3810-193, Aveiro, Portugal.
- CESAM - Centro de Estudos do Ambiente e do Mar, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal.
- Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal.
| | - Ana Filipa Durão
- Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal
- Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia, Facultat de Biociències, Universitat Autònoma de Barcelona, Campus de Bellaterra, Cerdanyola del Vallès, Spain
| | - Maria da Luz Mathias
- CESAM - Centro de Estudos do Ambiente e do Mar, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal
- Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal
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Elizabeth Alter S, Tariq L, Creed JK, Megafu E. Evolutionary responses of marine organisms to urbanized seascapes. Evol Appl 2021; 14:210-232. [PMID: 33519966 PMCID: PMC7819572 DOI: 10.1111/eva.13048] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 06/16/2020] [Accepted: 06/17/2020] [Indexed: 12/19/2022] Open
Abstract
Many of the world's major cities are located in coastal zones, resulting in urban and industrial impacts on adjacent marine ecosystems. These pressures, which include pollutants, sewage, runoff and debris, temperature increases, hardened shorelines/structures, and light and acoustic pollution, have resulted in new evolutionary landscapes for coastal marine organisms. Marine environmental changes influenced by urbanization may create new selective regimes or may influence neutral evolution via impacts on gene flow or partitioning of genetic diversity across seascapes. While some urban selective pressures, such as hardened surfaces, are similar to those experienced by terrestrial species, others, such as oxidative stress, are specific to aquatic environments. Moreover, spatial and temporal scales of evolutionary responses may differ in the ocean due to the spatial extent of selective pressures and greater capacity for dispersal/gene flow. Here, we present a conceptual framework and synthesis of current research on evolutionary responses of marine organisms to urban pressures. We review urban impacts on genetic diversity and gene flow and examine evidence that marine species are adapting, or are predicted to adapt, to urbanization over rapid evolutionary time frames. Our findings indicate that in the majority of studies, urban stressors are correlated with reduced genetic diversity. Genetic structure is often increased in urbanized settings, but artificial structures can also act as stepping stones for some hard-surface specialists, promoting range expansion. Most evidence for rapid adaptation to urban stressors comes from studies of heritable tolerance to pollutants in a relatively small number of species; however, the majority of marine ecotoxicology studies do not test directly for heritability. Finally, we highlight current gaps in our understanding of evolutionary processes in marine urban environments and present a framework for future research to address these gaps.
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Affiliation(s)
- S. Elizabeth Alter
- Department of Biology & ChemistryCalifornia State University, Monterey BayChapman Academic Science CenterSeasideCAUSA
- Department of BiologyYork CollegeCity University of New YorkJamaicaNYUSA
- Department of IchthyologyAmerican Museum of Natural HistoryNew YorkNYUSA
| | - Laraib Tariq
- Department of BiologyYork CollegeCity University of New YorkJamaicaNYUSA
| | - James Keanu Creed
- Department of BiologyYork CollegeCity University of New YorkJamaicaNYUSA
- Department of IchthyologyAmerican Museum of Natural HistoryNew YorkNYUSA
| | - Emmanuel Megafu
- Department of BiologyYork CollegeCity University of New YorkJamaicaNYUSA
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An Integrated Biomarker Approach Using Flounder to Improve Chemical Risk Assessments in the Heavily Polluted Seine Estuary. J Xenobiot 2020; 10:14-35. [PMID: 33397836 PMCID: PMC7792928 DOI: 10.3390/jox10020004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 10/16/2020] [Accepted: 10/20/2020] [Indexed: 02/07/2023] Open
Abstract
The objective of this study was to develop an integrative approach in ecotoxicology (from biomarkers to population genetics) to assess the ecological status of fish populations. Flounders (Platichthys flesus) collected after the spawning season in the heavily polluted Seine estuary were compared with the moderately polluted Bay of Douarnenez. The muscle energetic reserves were highly depleted in Seine vs. Douarnenez fish. The Seine fish displaying a reduced capacity to manage the oxidative stress and a higher energetic metabolism. An increase in the content of muscle membrane phospholipids (sphingomyelin, phosphatidylserine, free sterols) was detected in the Seine vs. Douarnenez fish. The data integration allowed to hypothesize relationships between membrane phospholipids, xenobiotic metabolism, bioenergetics, and antioxidant defence. The genetic diversity considering neutral markers was maintained in the heavily polluted Seine population compared with the Douarnenez population. Finally, we suggest that the high physiological cost of tolerance to toxicants in the Seine flounder population could compromise its capacity to respond in the future to an additional stressor like warming waters in shallow depth. Thus, this population could be submitted to an ecological risk.
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Sepp T, Ujvari B, Ewald PW, Thomas F, Giraudeau M. Urban environment and cancer in wildlife: available evidence and future research avenues. Proc Biol Sci 2019; 286:20182434. [PMID: 30963883 PMCID: PMC6367167 DOI: 10.1098/rspb.2018.2434] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 12/10/2018] [Indexed: 12/23/2022] Open
Abstract
While it is generally known that the risk of several cancers in humans is higher in urban areas compared with rural areas, cancer is often deemed a problem of human societies with modern lifestyles. At the same time, more and more wild animals are affected by urbanization processes and are faced with the need to adapt or acclimate to urban conditions. These include, among other things, increased exposure to an assortment of pollutants (e.g. chemicals, light and noise), novel types of food and new infections. According to the abundant literature available for humans, all of these factors are associated with an increased probability of developing cancerous neoplasias; however, the link between the urban environment and cancer in wildlife has not been discussed in the scientific literature. Here, we describe the available evidence linking environmental changes resulting from urbanization to cancer-related physiological changes in wild animals. We identify the knowledge gaps in this field and suggest future research avenues, with the ultimate aim of understanding how our modern lifestyle affects cancer prevalence in urbanizing wild populations. In addition, we consider the possibilities of using urban wild animal populations as models to study the association between environmental factors and cancer epidemics in humans, as well as to understand the evolution of cancer and defence mechanisms against it.
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Affiliation(s)
- Tuul Sepp
- Institute of Ecology and Earth Sciences, University of Tartu, Vanemuise 46, 51014 Tartu, Estonia
| | - Beata Ujvari
- School of Life and Environmental Sciences, Centre for Integrative Ecology, Deakin University, Waurn Ponds, VIC, Australia
| | - Paul W. Ewald
- Department of Biology, University of Louisville, Louisville, KY 40292, USA
| | - Frédéric Thomas
- CREEC, 911 Avenue Agropolis, BP 6450134394 Montpellier Cedex 5, France
- MIVEGEC, UMR IRD/CNRS/UM 5290, 911 Avenue Agropolis, BP 6450134394 Montpellier Cedex 5, France
| | - Mathieu Giraudeau
- CREEC, 911 Avenue Agropolis, BP 6450134394 Montpellier Cedex 5, France
- MIVEGEC, UMR IRD/CNRS/UM 5290, 911 Avenue Agropolis, BP 6450134394 Montpellier Cedex 5, France
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6
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Vittecoq M, Giraudeau M, Sepp T, Marcogliese DJ, Klaassen M, Renaud F, Ujvari B, Thomas F. Turning natural adaptations to oncogenic factors into an ally in the war against cancer. Evol Appl 2018; 11:836-844. [PMID: 29928293 PMCID: PMC5999213 DOI: 10.1111/eva.12608] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 01/25/2018] [Indexed: 12/14/2022] Open
Abstract
Both field and experimental evolution studies have demonstrated that organisms naturally or artificially exposed to environmental oncogenic factors can, sometimes rapidly, evolve specific adaptations to cope with pollutants and their adverse effects on fitness. Although numerous pollutants are mutagenic and carcinogenic, little attention has been given to exploring the extent to which adaptations displayed by organisms living in oncogenic environments could inspire novel cancer treatments, through mimicking the processes allowing these organisms to prevent or limit malignant progression. Building on a substantial knowledge base from the literature, we here present and discuss this progressive and promising research direction, advocating closer collaboration between the fields of medicine, ecology, and evolution in the war against cancer.
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Affiliation(s)
- Marion Vittecoq
- Institut de Recherche de la Tour du Valat Arles France.,CREEC/MIVEGEC IRD CNRS University of Montpellier Montpellier France
| | - Mathieu Giraudeau
- School of Life Sciences Arizona State University Tempe AZ USA.,Centre for Ecology & Conservation College of Life and Environmental Sciences University of Exeter Penryn UK
| | - Tuul Sepp
- School of Life Sciences Arizona State University Tempe AZ USA.,Department of Zoology University of Tartu Tartu Estonia
| | - David J Marcogliese
- Aquatic Contaminants Research Division Water Science and Technology Directorate Environment and Climate Change Canada St. Lawrence Centre Montreal QC Canada.,Fisheries and Oceans Canada St. Andrews Biological Station St. Andrews NB Canada
| | - Marcel Klaassen
- School of Life and Environmental Sciences Centre for Integrative Ecology Deakin University Deakin Vic. Australia
| | - François Renaud
- CREEC/MIVEGEC IRD CNRS University of Montpellier Montpellier France
| | - Beata Ujvari
- School of Life and Environmental Sciences Centre for Integrative Ecology Deakin University Deakin Vic. Australia.,School of Biological Sciences University of Tasmania Hobart TAS Australia
| | - Frédéric Thomas
- CREEC/MIVEGEC IRD CNRS University of Montpellier Montpellier France
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7
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New set of candidate gene SNPs and microsatellites to disentangle selective and neutral processes shaping population responses of European flounder (Platichthys flesus) to anthropogenic stress and contrasted environments. CONSERV GENET RESOUR 2015. [DOI: 10.1007/s12686-015-0492-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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8
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Galland C, Dupuy C, Loizeau V, Danion M, Auffret M, Quiniou L, Laroche J, Pichereau V. Proteomic analysis of the European flounder Platichthys flesus response to experimental PAH-PCB contamination. MARINE POLLUTION BULLETIN 2015; 95:646-657. [PMID: 25912264 DOI: 10.1016/j.marpolbul.2015.04.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 03/28/2015] [Accepted: 04/15/2015] [Indexed: 06/04/2023]
Abstract
Platichthys flesus is often used as a sentinel species to monitor the estuarine water quality. In this study, we carried out an experimental contamination of fish using a PAHs/PCBs mixture, which was designed to mimic the concentrations found in the Seine estuary (C1) and 10 times these concentrations (C2). We used a proteomic approach to understand the molecular mechanisms implied in the response of P. flesus to these xenobiotics. We showed that 54 proteins were differentially accumulated in one or several conditions, which 34 displayed accumulation factors higher than two. 18 of these proteins were identified by MALDI TOF-TOF mass spectrometry. The results indicated the deregulation of oxidative stress- and glutathione metabolism-(GST, GPx) proteins as well as of several proteins belonging to the betaine demethylation pathway and the methionine cycle (BHMT, SHMT, SAHH), suggesting a role for these different pathways in the P. flesus response to chemical contamination.
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Affiliation(s)
- Claire Galland
- Université de Brest, Laboratoire des Sciences de l'Environnement Marin, LEMAR, UMR 6539 UBO/CNRS/IRD/Ifremer, Institut Universitaire Européen de la Mer (IUEM), 29280 Plouzané, France
| | - Célie Dupuy
- Université de Brest, Laboratoire des Sciences de l'Environnement Marin, LEMAR, UMR 6539 UBO/CNRS/IRD/Ifremer, Institut Universitaire Européen de la Mer (IUEM), 29280 Plouzané, France
| | - Véronique Loizeau
- Unité de Biogéochimie et Ecotoxicologie, IFREMER, Centre de Brest, BP70, 29280 Plouzané, France
| | - Morgane Danion
- ANSES, Agence nationale de sécurité sanitaire de l'alimentation et de l'environnement et du travail, site de Ploufragan-Plouzané-Technopole Brest Iroise, 29280 Plouzané, France
| | - Michel Auffret
- Université de Brest, Laboratoire des Sciences de l'Environnement Marin, LEMAR, UMR 6539 UBO/CNRS/IRD/Ifremer, Institut Universitaire Européen de la Mer (IUEM), 29280 Plouzané, France
| | - Louis Quiniou
- Université de Brest, Laboratoire des Sciences de l'Environnement Marin, LEMAR, UMR 6539 UBO/CNRS/IRD/Ifremer, Institut Universitaire Européen de la Mer (IUEM), 29280 Plouzané, France
| | - Jean Laroche
- Université de Brest, Laboratoire des Sciences de l'Environnement Marin, LEMAR, UMR 6539 UBO/CNRS/IRD/Ifremer, Institut Universitaire Européen de la Mer (IUEM), 29280 Plouzané, France
| | - Vianney Pichereau
- Université de Brest, Laboratoire des Sciences de l'Environnement Marin, LEMAR, UMR 6539 UBO/CNRS/IRD/Ifremer, Institut Universitaire Européen de la Mer (IUEM), 29280 Plouzané, France.
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Lavergne E, Pedron N, Calves I, Claireaux G, Mazurais D, Zambonino-Infante J, Le Bayon N, Cahu C, Laroche J. Does the chronic chemical contamination of a European flounder population decrease its thermal tolerance? MARINE POLLUTION BULLETIN 2015; 95:658-664. [PMID: 25636829 DOI: 10.1016/j.marpolbul.2015.01.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 12/02/2014] [Accepted: 01/05/2015] [Indexed: 06/04/2023]
Abstract
Juvenile flounders (Platichthys flesus), collected in two estuaries with similar temperature regimes (the heavily polluted Seine and the moderately contaminated Vilaine), were submitted to a common garden experiment. After an acclimation period, both populations were challenged by a thermal stress (9-24°C for 15days, then maintenance at 24°C for 19days). The condition factor of the Vilaine fish increased in both conditions, while it decreased for the heated Seine flounders after 34days. The expression of genes related to the energetic metabolism was measured in the liver. The expression levels for ATP-F0 and COII were significantly reduced for heated vs. standard fish from both estuaries, while a decrease of the 12S expression was detected only in heated vs. standard fish from the Seine estuary. Thus, it is suggested that highly contaminated fish from Seine could display a lower tolerance to thermal stress, compared to moderately contaminated fish from Vilaine.
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Affiliation(s)
- Edouard Lavergne
- Université de Bretagne Occidentale, UMR 6539, CNRS/IRD/UBO/Ifremer, Laboratoire des Sciences de l'Environnement Marin LEMAR, Institut Universitaire Européen de la Mer IUEM, Plouzané, France.
| | - Nicolas Pedron
- Université de Bretagne Occidentale, UMR 6539, CNRS/IRD/UBO/Ifremer, Laboratoire des Sciences de l'Environnement Marin LEMAR, Institut Universitaire Européen de la Mer IUEM, Plouzané, France; Ifremer, Laboratoire d'Adaptation, Reproduction et Nutrition des Poissons ARN, Unité de Physiologie Fonctionnelle des Organismes Marins PFOM, Plouzané, France
| | - Isabelle Calves
- Université de Bretagne Occidentale, UMR 6539, CNRS/IRD/UBO/Ifremer, Laboratoire des Sciences de l'Environnement Marin LEMAR, Institut Universitaire Européen de la Mer IUEM, Plouzané, France
| | - Guy Claireaux
- Université de Bretagne Occidentale, UMR 6539, CNRS/IRD/UBO/Ifremer, Laboratoire des Sciences de l'Environnement Marin LEMAR, Institut Universitaire Européen de la Mer IUEM, Plouzané, France
| | - David Mazurais
- Université de Bretagne Occidentale, UMR 6539, CNRS/IRD/UBO/Ifremer, Laboratoire des Sciences de l'Environnement Marin LEMAR, Institut Universitaire Européen de la Mer IUEM, Plouzané, France; Ifremer, Laboratoire d'Adaptation, Reproduction et Nutrition des Poissons ARN, Unité de Physiologie Fonctionnelle des Organismes Marins PFOM, Plouzané, France
| | - José Zambonino-Infante
- Université de Bretagne Occidentale, UMR 6539, CNRS/IRD/UBO/Ifremer, Laboratoire des Sciences de l'Environnement Marin LEMAR, Institut Universitaire Européen de la Mer IUEM, Plouzané, France; Ifremer, Laboratoire d'Adaptation, Reproduction et Nutrition des Poissons ARN, Unité de Physiologie Fonctionnelle des Organismes Marins PFOM, Plouzané, France
| | - Nicolas Le Bayon
- Université de Bretagne Occidentale, UMR 6539, CNRS/IRD/UBO/Ifremer, Laboratoire des Sciences de l'Environnement Marin LEMAR, Institut Universitaire Européen de la Mer IUEM, Plouzané, France; Ifremer, Laboratoire d'Adaptation, Reproduction et Nutrition des Poissons ARN, Unité de Physiologie Fonctionnelle des Organismes Marins PFOM, Plouzané, France
| | - Chantal Cahu
- Université de Bretagne Occidentale, UMR 6539, CNRS/IRD/UBO/Ifremer, Laboratoire des Sciences de l'Environnement Marin LEMAR, Institut Universitaire Européen de la Mer IUEM, Plouzané, France; Ifremer, Laboratoire d'Adaptation, Reproduction et Nutrition des Poissons ARN, Unité de Physiologie Fonctionnelle des Organismes Marins PFOM, Plouzané, France
| | - Jean Laroche
- Université de Bretagne Occidentale, UMR 6539, CNRS/IRD/UBO/Ifremer, Laboratoire des Sciences de l'Environnement Marin LEMAR, Institut Universitaire Européen de la Mer IUEM, Plouzané, France
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Larsen PF, Nielsen EE, Hansen MM, Wang T, Meier K, Pertoldi C, Loeschcke V. Tissue specific haemoglobin gene expression suggests adaptation to local marine conditions in North Sea flounder (Platichthys flesus L.). Genes Genomics 2013. [DOI: 10.1007/s13258-013-0101-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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11
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Evrard E, Devaux A, Bony S, Cachot J, Charrier G, Quiniou L, Laroche J. Responses of juvenile European flounder (Platichthys flesus) to multistress in the Vilaine estuary, during a 6-month survey. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 20:676-689. [PMID: 22945659 DOI: 10.1007/s11356-012-1138-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2012] [Accepted: 08/23/2012] [Indexed: 06/01/2023]
Abstract
Physiological and genetic responses of age 0+ Platichthys flesus were investigated in the eutrophicated and moderately contaminated Vilaine estuary, during a 6-month survey. The main objective of this study was to explore the biological responses of fishes during their juvenile period in an estuarine system in order to detect a possible selective pressure induced by the environmental stress. Our results showed a general convergence in physiological responses along the survey: an increase in genotoxicity was associated with an increase in mRNA expression of ATPase and betaine homocysteine methyltransferase. These results could suggest an increase of cellular damage, energetic request, and detoxification rate related to the growing exposure time to stress. Considering the aging of the cohort, the genetic characteristics of the Vilaine flounder cohort came closer to the one observed in a highly stressed system, the Seine estuary, suggesting a potential selective pressure mainly induced by the chemical stress.
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Affiliation(s)
- Estérine Evrard
- CEDRE, rue Alain Colas, CS 41836, 29218 Brest Cedex 2, France
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12
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Guinand B, Durieux EDH, Dupuy C, Cerqueira F, Bégout ML. Phenotypic and genetic differentiation in young-of-the-year common sole (Solea solea) at differentially contaminated nursery grounds. MARINE ENVIRONMENTAL RESEARCH 2011; 71:195-206. [PMID: 21315443 DOI: 10.1016/j.marenvres.2011.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2010] [Revised: 01/13/2011] [Accepted: 01/17/2011] [Indexed: 05/30/2023]
Abstract
Growth-related characters, condition factor, and genetic differentiation were investigated for a single cohort of young-of-the-year (YOY) sole within and among nurseries with differing levels of heavy metals (Cd, Cu and Zn) contamination in the two Charentais Straits, Bay of Biscay, France. Analyses were performed when individuals recruited (May), then after a full summer spent in each nursery (October). Levels of phenotypic and genetic diversity were compared, together with genetic differentiation at a candidate metallothionein (MT) locus and three putatively neutral microsatellite loci. No phenotypic or genetic differentiation was detected among nurseries in May, but significant variation at each phenotypic trait and at the multilocus level in October (P < 0.001). Single locus analysis demonstrated that only the MT locus was significantly differentiated among nurseries, whether corrected for null alleles or not (θ=0.0401 and θ(corr.FreeNA)=0.0326, respectively; P < 0.001). Results indicate that phenotypic differences among YOY sole nurseries present a molecular correlate acting at identical spatio-temporal scales among nurseries, potentially reflecting differential selective pressure among nurseries in response to contamination.
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Affiliation(s)
- Bruno Guinand
- Université Montpellier II, Institut des Sciences de l'Evolution de Montpellier, Evolution des Poissons, CNRS UMR 5554, place E. Bataillon, c.c. 63, 34095 Montpellier, Cedex 5, France.
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