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Shaner JT, Harrell RM, Jacobs JM, Yonkos LT, Townsend H. Modeling the importance of fish condition, overall health, and disease on the fecundity of White Perch in the Choptank River. JOURNAL OF AQUATIC ANIMAL HEALTH 2023; 35:154-168. [PMID: 37596800 DOI: 10.1002/aah.10186] [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: 11/27/2022] [Revised: 03/01/2023] [Accepted: 03/20/2023] [Indexed: 08/20/2023]
Abstract
OBJECTIVE Modeling of fecundity with allometric, nutritional, and environmental covariates has increased sensitivity of reproductive metrics in many fish species. In estuaries with heavy anthropogenic influence, resident species often experience sublethal health impacts because of increased stress, which can include increases in gonadal pathology, intersex, or potential reproductive failure. This study models the fecundity of the estuarine species White Perch Morone americana in response to health parameters identified as signals of habitat stress, including gross pathology presentation, nutritional condition, and disease presence. METHODS Subpopulation fecundity in the Choptank River (Maryland) of the Chesapeake Bay was estimated using stereological fecundity sampling methods and modeled using information-theoretic approaches of model selection. Nutritional and health parameters identified through health assessment techniques, specific somatic indices, and disease presence were selected as covariates. RESULT Nutrition demonstrated limited influence on model fit as compared to models with only conventional allometric variables such as weight and length. Of the health variables, gross pathology and somatic indices showed minimal influence on selection, but mycobacterial infection, a chronic condition in the Chesapeake Bay among temperate basses, showed measurable influence. Models with mycobacteriosis included were 40 times more likely the best fit when compared to models with only allometric parameters. CONCLUSION Whether this has a region-wide influence on all subpopulations will require further research and sampling of the magnitude of mycobacteriosis infection.
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Affiliation(s)
- Jacob T Shaner
- Maryland Department of Natural Resources, Cooperative Oxford Laboratory, Oxford, Maryland, USA
| | - Reginal M Harrell
- Department of Environmental Science and Technology, University of Maryland, College Park, Maryland, USA
| | - John M Jacobs
- National Oceanic and Atmospheric Administration, National Centers for Coastal Ocean Science, Cooperative Oxford Laboratory, Oxford, Maryland, USA
| | - Lance T Yonkos
- Department of Environmental Science and Technology, University of Maryland, College Park, Maryland, USA
| | - Howard Townsend
- National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Office of Science and Technology, Silver Spring, Maryland, USA
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Matsche MA, Pulster EL. Seasonal variation of polycyclic aromatic hydrocarbon metabolites in bile of white perch Morone americana from two Chesapeake Bay tributaries. DISEASES OF AQUATIC ORGANISMS 2021; 147:63-86. [PMID: 34854819 DOI: 10.3354/dao03637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Polycyclic aromatic hydrocarbon (PAH) accumulation in the bile is a reliable biomarker of recent exposure to environmental PAH and elevated concentrations have been identified as significant risk factors for hepatic disease in some fish species. Recent surveys (spring 2019) revealed a high incidence of hepatic lesions in white perch Morone americana from Chesapeake Bay, but this initial survey did not detect an association between PAH metabolites and lesions. Seasonal sampling of fish was extended through the winter 2020 to increase the metabolite and hepatic lesion database and better understand annual PAH exposures to white perch. Naphthalenes, phenanthrenes, and benzo[a]pyrenes (equivalents) were analyzed in bile specimens (n = 400) using high-performance liquid chromatography with fluorescence detection. Mean concentrations of metabolites were highest in fish collected from the urbanized Severn River in summer and were lowest in fish from the more rural Choptank River in winter. Variance in metabolite concentrations were primarily due to location and season. Seasonal fluctuations in water temperature, river discharge, or feeding status had little influence on the pattern of metabolite concentrations observed. The results suggest higher exposures of fish to environmental PAH in the more developed Severn River with significant increases during summer, which could correspond to a spike in seasonal recreational motor boat use or other human activities. A better understanding of the factors that contribute to variability in PAH metabolism and the enterohepatic biliary circulation in white perch will improve the usefulness of biliary metabolites as a biomarker of PAH exposure in Chesapeake Bay and elsewhere.
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Affiliation(s)
- Mark A Matsche
- Cooperative Oxford Laboratory, Oxford, Maryland 21654, USA
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Matsche MA, Blazer VS, Pulster EL, Mazik PM. High prevalence of biliary neoplasia in white perch Morone americana: potential roles of bile duct parasites and environmental contaminants. DISEASES OF AQUATIC ORGANISMS 2020; 141:195-224. [PMID: 33150869 DOI: 10.3354/dao03510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Recent surveys of white perch Morone americana from Chesapeake Bay, USA, revealed a high prevalence of hepatic and biliary lesions, including neoplasia, and bile duct parasites. Here, we describe lesions in the liver and gallbladder and evaluate for statistical associations among lesions, parasites, and biomarkers of chemical exposure in fish from 2 tributaries of Chesapeake Bay. Fish were collected from an estuarine site in the Choptank River (n = 122, ages 3-11), a tributary with extensive agriculture within the watershed, and the Severn River (n = 131, ages 2-16), a tributary with extensive urban development. Passive integrative samplers were deployed at the fish collection site and an upstream, non-tidal site in each river for 30 d. Intrahepatic biliary lesions observed in fish from both rivers included neoplasia (23.3%), dysplasia (16.2%), hyperplasia (46.6%), cholangitis (24.9%), and dilated ducts containing plasmodia of Myxidium sp. (24.9%). Hepatocellular lesions included foci of hepatocellular alteration (FHA, 15.8%) and neoplasia in 4 Severn River fish (2.3%). Age of fish and Myxidium sp. infections were significant risk factors for proliferative and neoplastic biliary lesions, age alone was a risk factor for FHA, and Goussia bayae infections were associated with cholangitis and cholecystitis. Lesion prevalence was higher in fish from the Severn River, which contained higher concentrations of PAHs, organochlorine pesticides, and brominated diphenyl ethers. Metabolite biomarkers indicated higher PAH exposures in Severn River fish. This study suggests Myxidium sp. as a promoter of bile duct tumors, but more data are needed to evaluate the biological effects of environmental contaminants in this species.
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Affiliation(s)
- Mark A Matsche
- Cooperative Oxford Laboratory, Oxford, Maryland 21654, USA
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Urbanization Altered Bacterial and Archaeal Composition in Tidal Freshwater Wetlands Near Washington DC, USA, and Buenos Aires, Argentina. Microorganisms 2019; 7:microorganisms7030072. [PMID: 30845660 PMCID: PMC6463075 DOI: 10.3390/microorganisms7030072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 02/14/2019] [Accepted: 03/02/2019] [Indexed: 02/03/2023] Open
Abstract
Urban expansion causes coastal wetland loss, and environmental stressors associated with development can lead to wetland degradation and loss of ecosystem services. This study investigated the effect of urbanization on prokaryotic community composition in tidal freshwater wetlands. Sites in an urban, suburban, and rural setting were located near Buenos Aires, Argentina, and Washington D.C., USA. We sampled soil associated with two pairs of functionally similar plant species, and used Illumina sequencing of the 16S rRNA gene to examine changes in prokaryotic communities. Urban stressors included raw sewage inputs, nutrient pollution, and polycyclic aromatic hydrocarbons. Prokaryotic communities changed along the gradient (nested PerMANOVA, Buenos Aires: p = 0.005; Washington D.C.: p = 0.001), but did not differ between plant species within sites. Indicator taxa included Methanobacteria in rural sites, and nitrifying bacteria in urban sites, and we observed a decrease in methanogens and an increase in ammonia-oxidizers from rural to urban sites. Functional profiles in the Buenos Aires communities showed higher abundance of pathways related to nitrification and xenobiotic degradation in the urban site. These results suggest that changes in prokaryotic taxa across the gradient were due to surrounding stressors, and communities in urban and rural wetlands are likely carrying out different functions.
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Pinkney AE, Harshbarger JC, Rutter MA, Sakaris PC. Trends in Liver and Skin Tumor Prevalence in Brown Bullhead (Ameiurus nebulosus) from the Anacostia River, Washington, DC, and Nearby Waters. Toxicol Pathol 2019; 47:174-189. [DOI: 10.1177/0192623318823150] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The prevalence of liver and skin tumors in brown bullhead ( Ameiurus nebulosus) from the Anacostia River (Washington, DC) and nearby areas was determined in 2014, 2015, and 2016. The objectives were to (1) compare tumor prevalence across space and time; (2) analyze the 1992–2016 Chesapeake Bay Tumor Database to identify reference locations and test age, length, weight, and sex as covariates; and (3) explore whether changes in bullhead exposure to contaminants can explain the observed trends. With logistic regression, we reported large statistically significant decreases in liver tumor probabilities in bullheads from the Anacostia CSX Bridge (ANAC) area between 1996 and 2001 (merged: female, 77.8%; male, 48.6%), 2009 to 2011 (female, 42.5%; male, 16.6%), and 2014 to 2016 (female, 18.0%; male, 5.7%). Skin tumors decreased by a factor of six in both females and males. Polycyclic aromatic compounds (PAC) initiate liver neoplasms and polychlorinated biphenyls (PCBs) and DDT compounds are promoters. The causes of skin tumors in bullhead are uncertain. Biomarker and tissue data show decreases in PAC-DNA adducts and PCB and DDT contamination in ANAC bullheads. It is likely that the decreased liver tumor prevalence is associated with decreased exposure to these contaminants.
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Affiliation(s)
- Alfred E. Pinkney
- U.S. Fish and Wildlife Service, Chesapeake Bay Field Office, Annapolis, Maryland, USA
| | - John C. Harshbarger
- Department of Pathology, George Washington University Medical Center, Washington, District of Columbia, USA
| | - Michael A. Rutter
- Department of Mathematics, Penn State Behrend, Erie, Pennsylvania, USA
| | - Peter C. Sakaris
- School of Science and Technology, Georgia Gwinnett College, Lawrenceville, Georgia, USA
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Blazer VS, Walsh HL, Braham RP, Hahn CM, Mazik P, McIntyre PB. Tumours in white suckers from Lake Michigan tributaries: pathology and prevalence. JOURNAL OF FISH DISEASES 2017; 40:377-393. [PMID: 27553424 DOI: 10.1111/jfd.12520] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 05/25/2016] [Accepted: 05/25/2016] [Indexed: 05/27/2023]
Abstract
The prevalence and histopathology of neoplastic lesions were assessed in white sucker Catostomus commersonii captured at two Lake Michigan Areas of Concern (AOCs), the Sheboygan River and Milwaukee Estuary. Findings were compared to those observed at two non-AOC sites, the Root and Kewaunee rivers. At each site, approximately 200 adult suckers were collected during their spawning migration. Raised skin lesions were observed at all sites and included discrete white spots, mucoid plaques on the body surface and fins and large papillomatous lesions on lips and body. Microscopically, hyperplasia, papilloma and squamous cell carcinoma were documented. Liver neoplasms were also observed at all sites and included both hepatocellular and biliary tumours. Based on land use, the Kewaunee River was the site least impacted by human activities previously associated with fish tumours and had significantly fewer liver neoplasms when compared to the other sites. The proportion of white suckers with liver tumours followed the same patterns as the proportion of urban land use in the watershed: the Milwaukee Estuary had the highest prevalence, followed by the Root, Sheboygan and Kewaunee rivers. The overall skin neoplasm (papilloma and carcinoma) prevalence did not follow the same pattern, although the percentage of white suckers with squamous cell carcinoma exhibited a similar relationship to land use. Testicular tumours (seminoma) were observed at both AOC sites but not at the non-AOC sites. Both skin and liver tumours were significantly and positively associated with age but not sex.
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Affiliation(s)
- V S Blazer
- Fish Health Branch, Leetown Science Center, U.S. Geological Survey, Kearneysville, WV, USA
| | - H L Walsh
- Division of Forestry and Natural Resources, West Virginia University, Morgantown, WV, USA
| | - R P Braham
- Fish Health Branch, Leetown Science Center, U.S. Geological Survey, Kearneysville, WV, USA
| | - C M Hahn
- Fish Health Branch, Leetown Science Center, U.S. Geological Survey, Kearneysville, WV, USA
| | - P Mazik
- West Virginia Cooperative Fish and Wildlife Unit, U.S. Geological Survey, West Virginia University, Morgantown, WV, USA
| | - P B McIntyre
- Center for Limnology, University of Wisconsin-Madison, Madison, WI, USA
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Hahn CM, Iwanowicz LR, Cornman RS, Mazik PM, Blazer VS. Transcriptome discovery in non-model wild fish species for the development of quantitative transcript abundance assays. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2016; 20:27-40. [PMID: 27497300 DOI: 10.1016/j.cbd.2016.07.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 06/04/2016] [Accepted: 07/08/2016] [Indexed: 12/14/2022]
Abstract
Environmental studies increasingly identify the presence of both contaminants of emerging concern (CECs) and legacy contaminants in aquatic environments; however, the biological effects of these compounds on resident fishes remain largely unknown. High throughput methodologies were employed to establish partial transcriptomes for three wild-caught, non-model fish species; smallmouth bass (Micropterus dolomieu), white sucker (Catostomus commersonii) and brown bullhead (Ameiurus nebulosus). Sequences from these transcriptome databases were utilized in the development of a custom nCounter CodeSet that allowed for direct multiplexed measurement of 50 transcript abundance endpoints in liver tissue. Sequence information was also utilized in the development of quantitative real-time PCR (qPCR) primers. Cross-species hybridization allowed the smallmouth bass nCounter CodeSet to be used for quantitative transcript abundance analysis of an additional non-model species, largemouth bass (Micropterus salmoides). We validated the nCounter analysis data system with qPCR for a subset of genes and confirmed concordant results. Changes in transcript abundance biomarkers between sexes and seasons were evaluated to provide baseline data on transcript modulation for each species of interest.
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Affiliation(s)
- Cassidy M Hahn
- West Virginia University, School of Natural Resources, 322 Percival Hall, Morgantown, WV 26506, USA; US Geological Survey, Leetown Science Center, 11649 Leetown Road, Kearneysville, WV 25430, USA.
| | - Luke R Iwanowicz
- US Geological Survey, Leetown Science Center, 11649 Leetown Road, Kearneysville, WV 25430, USA
| | - Robert S Cornman
- US Geological Survey, Leetown Science Center, 11649 Leetown Road, Kearneysville, WV 25430, USA
| | - Patricia M Mazik
- West Virginia University, School of Natural Resources, 322 Percival Hall, Morgantown, WV 26506, USA
| | - Vicki S Blazer
- US Geological Survey, Leetown Science Center, 11649 Leetown Road, Kearneysville, WV 25430, USA
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Kovács R, Csenki Z, Bakos K, Urbányi B, Horváth Á, Garaj-Vrhovac V, Gajski G, Gerić M, Negreira N, López de Alda M, Barceló D, Heath E, Kosjek T, Žegura B, Novak M, Zajc I, Baebler Š, Rotter A, Ramšak Ž, Filipič M. Assessment of toxicity and genotoxicity of low doses of 5-fluorouracil in zebrafish (Danio rerio) two-generation study. WATER RESEARCH 2015; 77:201-212. [PMID: 25889180 DOI: 10.1016/j.watres.2015.03.025] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 02/21/2015] [Accepted: 03/25/2015] [Indexed: 05/20/2023]
Abstract
Residues of anti-neoplastic drugs represent new and emerging pollutants in aquatic environments. Many of these drugs are genotoxic, and it has been postulated that they can cause adverse effects in aquatic ecosystems. 5-Fluorouracil (5-FU) is one of the most extensively used anti-neoplastic drugs in cancer therapy, and this article describes the results of the first investigation using a two-generation toxicity study design with zebrafish (Danio rerio). Exposure of zebrafish to 5-FU (0.01, 1.0 and 100 μg/L) was initiated with adult zebrafish (F0 generation) and continued through the hatchings and adults of the F1 generation, and the hatchings of the F2 generation, to day 33 post-fertilisation. The exposure did not affect survival, growth and reproduction of the zebrafish; however, histopathological changes were observed in the liver and kidney, along with genotoxic effects, at all 5-FU concentrations. Increases in DNA damage determined using the comet assay were significant in the liver and blood cells, but not in the gills and gonads. In erythrocytes, a significant, dose-dependent increase in frequency of micronuclei was observed at all 5-FU concentrations. Whole genome transcriptomic analysis of liver samples of F1 generation zebrafish exposed to 0.01 μg/L and 1 μg/L 5-FU revealed dose-dependent increases in the number of differentially expressed genes, including up-regulation of several DNA-damage-responsive genes and oncogenes (i.e., jun, myca). Although this chronic exposure to environmentally relevant concentrations of 5-FU did not affect the reproduction of the exposed zebrafish, it cannot be excluded that 5-FU can lead to degenerative changes, including cancers, which over long-term exposure of several generations might affect fish populations. The data from this study contribute to a better understanding of the potential consequences of chronic exposure of fish to low concentrations of anti-neoplastic drugs, and they demonstrate that further studies into multi-generation toxicity are needed.
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Affiliation(s)
- Róbert Kovács
- Department of Aquaculture, Institute of Aquaculture and Environmental Safety, Faculty of Agricultural and Environmental Sciences, Szent István University, 1. Pater Károly St., H-2100 Gödöllo, Hungary
| | - Zsolt Csenki
- Department of Aquaculture, Institute of Aquaculture and Environmental Safety, Faculty of Agricultural and Environmental Sciences, Szent István University, 1. Pater Károly St., H-2100 Gödöllo, Hungary
| | - Katalin Bakos
- Department of Aquaculture, Institute of Aquaculture and Environmental Safety, Faculty of Agricultural and Environmental Sciences, Szent István University, 1. Pater Károly St., H-2100 Gödöllo, Hungary
| | - Béla Urbányi
- Department of Aquaculture, Institute of Aquaculture and Environmental Safety, Faculty of Agricultural and Environmental Sciences, Szent István University, 1. Pater Károly St., H-2100 Gödöllo, Hungary
| | - Ákos Horváth
- Department of Aquaculture, Institute of Aquaculture and Environmental Safety, Faculty of Agricultural and Environmental Sciences, Szent István University, 1. Pater Károly St., H-2100 Gödöllo, Hungary
| | - Vera Garaj-Vrhovac
- Mutagenesis Unit, Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10000 Zagreb, Croatia
| | - Goran Gajski
- Mutagenesis Unit, Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10000 Zagreb, Croatia
| | - Marko Gerić
- Mutagenesis Unit, Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10000 Zagreb, Croatia
| | - Noelia Negreira
- Water and Soil Quality Research Group, Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Jordi Girona 18-26, E-08034 Barcelona, Spain
| | - Miren López de Alda
- Water and Soil Quality Research Group, Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Jordi Girona 18-26, E-08034 Barcelona, Spain
| | - Damià Barceló
- Water and Soil Quality Research Group, Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Jordi Girona 18-26, E-08034 Barcelona, Spain; Catalan Institute for Water Research (ICRA), H(2)O Building, Scientific and Technological Park of the University of Girona, Emili Grahit 101, 17003 Girona, Spain
| | - Ester Heath
- Institute Jožef Stefan, Jadranska 29, 1000 Ljubljana, Slovenia
| | - Tina Kosjek
- Institute Jožef Stefan, Jadranska 29, 1000 Ljubljana, Slovenia
| | - Bojana Žegura
- National Institute of Biology, Večna pot 111, 1000 Ljubljana, Slovenia
| | - Matjaž Novak
- National Institute of Biology, Večna pot 111, 1000 Ljubljana, Slovenia; Ecological Engineering Institute, Ljubljanska 9, 2000 Maribor, Slovenia; Jozef Stefan International Postgraduate School, Jamova cesta 39, 1000 Ljubljana, Slovenia
| | - Irena Zajc
- National Institute of Biology, Večna pot 111, 1000 Ljubljana, Slovenia
| | - Špela Baebler
- National Institute of Biology, Večna pot 111, 1000 Ljubljana, Slovenia
| | - Ana Rotter
- National Institute of Biology, Večna pot 111, 1000 Ljubljana, Slovenia
| | - Živa Ramšak
- National Institute of Biology, Večna pot 111, 1000 Ljubljana, Slovenia
| | - Metka Filipič
- National Institute of Biology, Večna pot 111, 1000 Ljubljana, Slovenia.
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Pinkney AE, Harshbarger JC, Rutter MA. Temporal and spatial patterns in tumour prevalence in brown bullhead Ameiurus nebulosus (Lesueur) in the tidal Potomac River watershed (USA). JOURNAL OF FISH DISEASES 2014; 37:863-876. [PMID: 24974857 DOI: 10.1111/jfd.12271] [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: 01/27/2014] [Revised: 04/28/2014] [Accepted: 04/30/2014] [Indexed: 06/03/2023]
Abstract
For two decades, fish tumour surveys have been used to monitor habitat quality in the Chesapeake Bay (USA) watershed. Tributaries with sediments contaminated with polynuclear aromatic hydrocarbons (PAHs), known to cause liver neoplasia, were frequently targeted. Here, we compare surveys in brown bullhead Ameiurus nebulosus conducted in 2009-2011 in the tidal Potomac River watershed (including the Anacostia River) with previous surveys. Using logistic regression, we identified length and sex as covariates for liver and skin tumours. We reported a statistically significant decrease in liver tumour probabilities for standardized 280 mm Anacostia bullheads between the 1996 and 2001 samplings (merged collections: female-77.5%, male-43.0%) and 2009-2011 (female-42.2%, male-13.6%). However, liver tumour prevalence in bullheads from the Anacostia, Potomac River (Washington, DC) and Piscataway Creek (17 km downriver) was significantly higher than that for Chesapeake Bay watershed reference locations. The causes of skin tumours in bullheads are uncertain, requiring further research. The similar liver tumour prevalence in these three locations suggests that the problem is regional rather than restricted to the Anacostia. To monitor habitat quality and the success of pollution control actions, we recommend conducting tumour surveys on a 5-year cycle coordinated with sediment chemistry analyses.
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Affiliation(s)
- A E Pinkney
- Chesapeake Bay Field Office, U.S. Fish and Wildlife Service, Annapolis, MD, USA
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Muller A, Muller D. Analysis of nodal point pollution, variability, and sustainability in mesohaline tidal creeks. MARINE POLLUTION BULLETIN 2014; 85:204-213. [PMID: 24997875 DOI: 10.1016/j.marpolbul.2014.05.048] [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: 01/17/2014] [Revised: 05/15/2014] [Accepted: 05/19/2014] [Indexed: 06/03/2023]
Abstract
Mesohaline tidal creeks are critical since they may lie at the crossroads of aquatic habitat and urban/sub-urban pressures. The emphasis of this study was to determine the water quality stressor variations within and between tidal creeks and determine whether they serve as nodes of pollutants into the sub-estuary. Measurements of water quality stressors were conducted over a six-year period. The study revealed that characterizing the variability of individual tidal creeks is critical to understanding the process and impacts of stressors in sub-estuarine environments and that the tidal creeks are actually nodal points of sediment and nutrient pollution. This results in hypoxia being controlled within tidal creeks rather than being imported from the parent estuary. The calculated metrics were then used to create a Sustainability Characterization Map. Methods incorporated in this study would be of value to restoration managers, and in the decision-making process of urban and suburban watershed planners.
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Affiliation(s)
- Andrew Muller
- United States Naval Academy, Oceanography Department, Annapolis, MD 21402, USA.
| | - Diana Muller
- Director of Science, South River Federation, Edgewater, MD 21037, USA.
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Blazer VS, Hoffman J, Walsh HL, Braham RP, Hahn C, Collins P, Jorgenson Z, Ledder T. Health of white sucker within the St. Louis River area of concern associated with habitat usage as assessed using stable isotopes. ECOTOXICOLOGY (LONDON, ENGLAND) 2014; 23:236-51. [PMID: 24370817 PMCID: PMC3920021 DOI: 10.1007/s10646-013-1167-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 12/14/2013] [Indexed: 05/21/2023]
Abstract
In Spring 2011, 200 adult white sucker were collected in four areas of the St. Louis River area of concern (AOC), located in Minnesota and Wisconsin, USA. The areas included the upper AOC as a reference area, the upper estuary, St. Louis Bay and Superior Bay. Grossly visible abnormalities were documented and preserved for microscopic analyses, as were five to eight representative pieces of liver tissue. A piece of dorsal muscle was preserved for stable isotope analyses and otoliths removed for age determination. The incidence of raised skin lesions (mucoid plaques) was high (31 %), however, microscopically only 4.5 % of the white suckers had neoplasia (papillomas). The remaining lesions were epidermal hyperplasia. Superior Bay had the lowest percentage of skin/lip lesions (10 %), while St. Louis Bay had the highest (44 %). St. Louis Bay also had the highest incidence of skin neoplasms (12 %). No hepatocellular neoplasms were documented, however bile duct tumors were observed in 4.5 % of the suckers. Foci of cellular alteration were observed in fish from all sites except the upper AOC. Stable isotope data indicated that most of the suckers relied on the St. Louis River AOC for the majority (>75 %) of their diet, indicating they were resident within the AOC and not in Lake Superior. The amount of diet obtained from the upper estuary was a significant predictor of skin lesion incidence. Hence, habitat use within the AOC appears to be an important risk factor for skin and possibly, liver lesions.
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Affiliation(s)
- V. S. Blazer
- Leetown Science Center, Fish Health Branch, U.S. Geological Survey, 11649 Leetown Road, Kearneysville, WV 25430 USA
| | - J. Hoffman
- Mid-Continent Ecology Division, U.S. Environmental Protection Agency, 6201 Congdon Blvd, Duluth, MN USA
| | - H. L. Walsh
- Leetown Science Center, Fish Health Branch, U.S. Geological Survey, 11649 Leetown Road, Kearneysville, WV 25430 USA
| | - R. P. Braham
- College of Agriculture and Forestry, West Virginia University, P.O. Box 6125, Morgantown, WV 26506 USA
| | - C. Hahn
- College of Agriculture and Forestry, West Virginia University, P.O. Box 6125, Morgantown, WV 26506 USA
| | - P. Collins
- Minnesota Department of Natural Resources, 1201 E. Hwy 2, Grand Rapids, MN USA
| | - Z. Jorgenson
- Twin Cities Ecological Services Field Office, U.S. Fish and Wildlife Service, 4101 American Boulevard East, Bloomington, MN 55425 USA
| | - T. Ledder
- Lake Superior National Estuarine Research Reserve, University of Wisconsin, Superior, WI USA
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Abstract
The veterinary literature contains scattered reports of primary tumors of the urinary tract of fish, dating back to 1906. Many of the more recent reports have been described in association with the Registry of Tumors in Lower Animals, and most of the spontaneous neoplasms of the kidney and urinary bladder are single case reports. In rare instances, such as described in nephroblastomas of Japanese eels and tubular adenomas/adenocarcinomas of Oscars, there is suggestion of a genetic predisposition of certain populations to specific renal neoplasms, environmental carcinogenesis, or potentially an unknown infectious etiology acting as a promoter. Hematopoeitic neoplasms have been infrequently described as primary to the kidney of a variety of fish species, and therefore those case reports of renal lymphoma and plasmacytic leukemia are addressed within the context of this review.
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Affiliation(s)
- E. D. Lombardini
- Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand
| | | | - J. C. Harshbarger
- Department of Pathology, George Washington University Medical Center, Washington, DC, USA
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Durieux EDH, Connon RE, Werner I, D'Abronzo LS, Fitzgerald PS, Spearow JL, Ostrach DJ. Cytochrome P4501A mRNA and protein induction in striped bass (Morone saxatilis). FISH PHYSIOLOGY AND BIOCHEMISTRY 2012; 38:1107-1116. [PMID: 22252335 DOI: 10.1007/s10695-011-9597-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Accepted: 12/30/2011] [Indexed: 05/31/2023]
Abstract
The striped bass (Morone saxatilis) supports a valuable recreational fishery and is among the most important piscivorous fish of the San Francisco Estuary. This species has suffered a significant decline in numbers over the past decades, and there is indication that contaminants are important contributors. Polycyclic aromatic hydrocarbons (PAHs) and polyhalogenated aromatic hydrocarbons (PHAHs) including PCBs and dioxins are widespread in the estuary, they typically bioaccumulate through trophic levels, reaching highest levels in top predators and are known to affect the fish health and development. The aim of this study was to investigate the dynamics of cytochrome P4501A (Cyp1a) induction simultaneously at different levels of biological organization (RNA transcription and protein synthesis) as a biomarker of exposure to PAHs and PHAHs. We utilized β-naphthoflavone (BNF) as a model PAH to induce Cyp1a responses in juvenile striped bass in both dose-response and time-response assessments and determined Cyp1a mRNA and protein levels. Significant responses were measured in both systems at 10 mg ΒΝF kg⁻¹, a concentration used for time-response studies. Messenger RNA levels peaked at 6 h post-injection, while protein levels increased progressively with time, significantly peaking at 96 h post-injection; both remaining elevated throughout the duration of the test (8 days). Our data suggest that rapid induction of gene transcription following exposure and subsequent cumulative protein synthesis could provide a useful means of identifying temporal variants in exposure to Cyp1a inducers in Morone saxatilis. The potential application of this combined Cyp1a gene and protein biomarker in this species for field studies is discussed.
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Affiliation(s)
- Eric D H Durieux
- Pathobiology, Conservation and Population Biology Laboratory, John Muir Institute of the Environment, Center for Watershed Sciences, University of California, Davis, One Shields Avenue, Davis, CA, 95616, USA.
- UMR 6134 Sciences Pour l'Environnement, Université de Corse Pasquale Paoli, BP 52, 20250, Corte, France.
| | - Richard E Connon
- Aquatic Toxicology Laboratory, School of Veterinary Medicine, Department of Anatomy, Physiology and Cell Biology, University of California, Davis, CA, 95616, USA
| | - Inge Werner
- Aquatic Toxicology Laboratory, School of Veterinary Medicine, Department of Anatomy, Physiology and Cell Biology, University of California, Davis, CA, 95616, USA
- Swiss Centre for Applied Ecotoxicology, Eawag/EPFL, Überlandstrasse 133, 8600, Dübendorf, Switzerland
| | - Leandro S D'Abronzo
- Aquatic Toxicology Laboratory, School of Veterinary Medicine, Department of Anatomy, Physiology and Cell Biology, University of California, Davis, CA, 95616, USA
- University of California Medical Center, 10535 Hospital Way, Mather, CA, 95616, USA
| | - Patrick S Fitzgerald
- Pathobiology, Conservation and Population Biology Laboratory, John Muir Institute of the Environment, Center for Watershed Sciences, University of California, Davis, One Shields Avenue, Davis, CA, 95616, USA
| | - Jimmy L Spearow
- Pathobiology, Conservation and Population Biology Laboratory, John Muir Institute of the Environment, Center for Watershed Sciences, University of California, Davis, One Shields Avenue, Davis, CA, 95616, USA
- Department of Toxic Substances Control, 8800 Cal Center Drive, Sacramento, CA, 95826, USA
| | - David J Ostrach
- Pathobiology, Conservation and Population Biology Laboratory, John Muir Institute of the Environment, Center for Watershed Sciences, University of California, Davis, One Shields Avenue, Davis, CA, 95616, USA
- Ostrach Consulting, 18671 County Road 96, Woodland, CA, 95695, USA
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