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Ašmonaitė G, Sundh H, Asker N, Carney Almroth B. Rainbow Trout Maintain Intestinal Transport and Barrier Functions Following Exposure to Polystyrene Microplastics. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:14392-14401. [PMID: 30451503 DOI: 10.1021/acs.est.8b04848] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Ingestion has been proposed as a prominent exposure route for plastic debris in aquatic organisms, including fish. While the consequences of ingestion of large plastic litter are mostly understood, the impacts resulting from ingestion of microplastics (MPs) are largely unknown. We designed a study that aimed to assess impacts of MPs on fish intestinal physiology and examined integrity of extrinsic, physical and immunological barriers. Rainbow trout were exposed to polystyrene (PS) MPs (100-400 μm) via feed for a period of 4 weeks. Fish were fed four types of diets: control, diets containing virgin PS particles, or particles exposed to two different environmental matrices (sewage or harbor effluent). Extrinsic barrier disturbance in intestinal tissue was evaluated via histology. The paracellular permeability toward ions and molecules was examined using Ussing chambers and mRNA expression analysis of tight junction proteins. Active transport was monitored as transepithelial potential difference, short-circuits current and uptake rate of amino acid 3H-lysine. Immune status parameters were measured through mRNA expression level of cytokines, lysozyme activity, and hematological analysis of immune cells. We could not show that PS MPs induced inflammatory responses or acted as physical or chemical hazards upon ingestion. No measurable effects were exerted on fish intestinal permeability, active transport or electrophysiology.
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Affiliation(s)
- Giedrė Ašmonaitė
- Department of Biological and Environmental Sciences , University of Gothenburg , Medicinaregatan 18 , 413 90 Göteborg , Sweden
| | - Henrik Sundh
- Department of Biological and Environmental Sciences , University of Gothenburg , Medicinaregatan 18 , 413 90 Göteborg , Sweden
| | - Noomi Asker
- Department of Biological and Environmental Sciences , University of Gothenburg , Medicinaregatan 18 , 413 90 Göteborg , Sweden
| | - Bethanie Carney Almroth
- Department of Biological and Environmental Sciences , University of Gothenburg , Medicinaregatan 18 , 413 90 Göteborg , Sweden
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52
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Xiao Y, Zhao P, Yang Y, Li M. Ecotoxicity evaluation of natural suspended particles using the microalga, Euglena gracilis. CHEMOSPHERE 2018; 206:802-808. [PMID: 29804002 DOI: 10.1016/j.chemosphere.2018.05.061] [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: 02/24/2018] [Revised: 04/16/2018] [Accepted: 05/11/2018] [Indexed: 06/08/2023]
Abstract
As vectors for pollutants, suspended particles (SPs) have been studied for many years. However, limited studies have focused on the ecotoxicity of natural SPs. This study examined ecotoxicity of natural SPs isolated from Gonghu Bay and its Ecological Restoration Area (ERA) water samples by Tangential Flow Filtration (TFF) using the microalga Euglena gracilis as a model organism. Effects of SPs on algae growth, photosynthesis pigment contents, superoxide dismutase (SOD) activity and DNA damage were characterized to determine the effects of ecological restoration. Additionally, SPs were separated into nanoscale (<1 μm diameter) and common-scale (≥1 μm diameter) groups by size, to compare the differences in toxicity of SPs with different sizes. We found, in naturally occurring concentrations in Gonghu Bay, nanoscale SPs were more toxic than common-scale ones. However, no significant adverse effects were detected in the nanoscale SPs from the ERA, which demonstrated that ecological restoration might reduce the toxicity of nanoscale SPs. The results were supported by the inhibition of growth, SOD activities and DNA damage, while no adverse influences were detected on pigment contents of E. gracilis in all the treated groups. Our study provides new insights into the toxic effects of SPs.
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Affiliation(s)
- Yao Xiao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Peng Zhao
- Department of Environmental Engineering, School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China
| | - Yang Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Mei Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China.
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53
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Suzuki J, Imamura M, Nakano D, Yamamoto R, Fujita M. Effects of water turbidity and different temperatures on oxidative stress in caddisfly (Stenopsyche marmorata) larvae. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 630:1078-1085. [PMID: 29554729 DOI: 10.1016/j.scitotenv.2018.02.286] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 02/03/2018] [Accepted: 02/23/2018] [Indexed: 05/12/2023]
Abstract
Anthropogenic water turbidity derived from suspended solids (SS) is caused by reservoir sediment management practices such as drawdown flushing. Turbid water induces stress in many aquatic organisms, but the effects of turbidity on oxidative stress responses in aquatic insects have not yet been demonstrated. Here, we examined antioxidant responses, oxidative damage, and energy reserves in caddisfly (Stenopsyche marmorata) larvae exposed to turbid water (0 mg SS L-1, 500 mg SS L-1, and 2000 mg SS L-1) at different temperatures. We evaluated the combined effects of turbid water and temperature by measuring oxidative stress and using metabolic biomarkers. No turbidity level was significantly lethal to S. marmorata larvae. Moreover, there were no significant differences in antioxidant response or oxidative damage between the control and turbid water treatments at a low temperature (10 °C). However, at a high temperature (25 °C), turbid water modulated the activity of the antioxidant enzymes superoxide dismutase and catalase and the oxygen radical absorbance capacity as an indicator of the redox state of the insect larvae. Antioxidant defenses require energy, and high temperature was associated with low energy reserves, which might limit the capability of organisms to counteract reactive oxygen species. Moreover, co-exposure to turbid water and high temperature caused fluctuation of antioxidant defenses and increased the oxidative damage caused by the production of reactive oxygen species. Furthermore, the combined effect of high temperature and turbid water on antioxidant defenses and oxidative damage was larger than the individual effects. Therefore, our results demonstrate that exposure to both turbid water and high temperature generates additive and synergistic interactions causing oxidative stress in this aquatic insect species.
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Affiliation(s)
- Jumpei Suzuki
- Environmental Science Research Laboratory, Central Research Institute of Electric Power Industry, Abiko1646, Abiko, Chiba 270-1194, Japan; Department of Urban and Civil Engineering, College of Engineering, Ibaraki University, Nakanarusawa4-12-1, Hitachi, Ibaraki 316-8511, Japan.
| | - Masahiro Imamura
- Environmental Science Research Laboratory, Central Research Institute of Electric Power Industry, Abiko1646, Abiko, Chiba 270-1194, Japan
| | - Daisuke Nakano
- Environmental Science Research Laboratory, Central Research Institute of Electric Power Industry, Abiko1646, Abiko, Chiba 270-1194, Japan
| | - Ryosuke Yamamoto
- Environmental Science Research Laboratory, Central Research Institute of Electric Power Industry, Abiko1646, Abiko, Chiba 270-1194, Japan
| | - Masafumi Fujita
- Department of Urban and Civil Engineering, College of Engineering, Ibaraki University, Nakanarusawa4-12-1, Hitachi, Ibaraki 316-8511, Japan
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54
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Abiotic Controls of Invasive Nonnative Fishes in the Little Colorado River, Arizona. AMERICAN MIDLAND NATURALIST 2018. [DOI: 10.1674/0003-0031-180.1.119] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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55
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Wenger AS, Rawson CA, Wilson S, Newman SJ, Travers MJ, Atkinson S, Browne N, Clarke D, Depczynski M, Erftemeijer PL, Evans RD, Hobbs JPA, McIlwain JL, McLean DL, Saunders BJ, Harvey E. Management strategies to minimize the dredging impacts of coastal development on fish and fisheries. Conserv Lett 2018. [DOI: 10.1111/conl.12572] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Affiliation(s)
- Amelia S. Wenger
- School of Earth and Environmental Sciences; University of Queensland; St. Lucia Queensland 4072 Australia
| | - Christopher A. Rawson
- School of Molecular and Life Sciences; Curtin University; Bentley Western Australia 6102 Australia
| | - Shaun Wilson
- The Western Australian Marine Science Institution; The University of Western Australia; Crawley Western Australia 6009 Australia
- Marine Science Program, Science and Conservation Division, Department of Biodiversity; Conservation and Attractions; Kensington Western Australia 6151 Australia
- School of Biological Sciences and Oceans Institute; The University of Western Australia; Crawley Western Australia 6009 Australia
| | - Stephen J. Newman
- The Western Australian Marine Science Institution; The University of Western Australia; Crawley Western Australia 6009 Australia
- School of Molecular and Life Sciences; Curtin University; Bentley Western Australia 6102 Australia
- Western Australian Fisheries and Marine Research Laboratories, Department of Primary Industries and Regional Development; Government of Western Australia; North Beach Western Australia 6920 Australia
| | - Michael J. Travers
- The Western Australian Marine Science Institution; The University of Western Australia; Crawley Western Australia 6009 Australia
- School of Molecular and Life Sciences; Curtin University; Bentley Western Australia 6102 Australia
- Western Australian Fisheries and Marine Research Laboratories, Department of Primary Industries and Regional Development; Government of Western Australia; North Beach Western Australia 6920 Australia
| | - Scott Atkinson
- Centre for Biodiversity and Conservation Science; University of Queensland; St. Lucia Queensland 4072 Australia
| | - Nicola Browne
- School of Molecular and Life Sciences; Curtin University; Bentley Western Australia 6102 Australia
| | | | - Martial Depczynski
- The Western Australian Marine Science Institution; The University of Western Australia; Crawley Western Australia 6009 Australia
- The Oceans Graduate School; The University of Western Australia; Crawley Western Australian 6009 Australia
- Australian Institute of Marine Science; University of Western Australia; Crawley Western Australia 6009 Australia
| | - Paul L.A. Erftemeijer
- The Western Australian Marine Science Institution; The University of Western Australia; Crawley Western Australia 6009 Australia
- The Oceans Graduate School; The University of Western Australia; Crawley Western Australian 6009 Australia
| | - Richard D. Evans
- Marine Science Program, Science and Conservation Division, Department of Biodiversity; Conservation and Attractions; Kensington Western Australia 6151 Australia
- The Oceans Graduate School; The University of Western Australia; Crawley Western Australian 6009 Australia
| | - Jean-Paul A. Hobbs
- School of Molecular and Life Sciences; Curtin University; Bentley Western Australia 6102 Australia
| | - Jennifer L. McIlwain
- The Western Australian Marine Science Institution; The University of Western Australia; Crawley Western Australia 6009 Australia
- School of Molecular and Life Sciences; Curtin University; Bentley Western Australia 6102 Australia
| | - Dianne L. McLean
- The Oceans Graduate School; The University of Western Australia; Crawley Western Australian 6009 Australia
| | - Benjamin J. Saunders
- The Western Australian Marine Science Institution; The University of Western Australia; Crawley Western Australia 6009 Australia
- School of Molecular and Life Sciences; Curtin University; Bentley Western Australia 6102 Australia
| | - Euan Harvey
- The Western Australian Marine Science Institution; The University of Western Australia; Crawley Western Australia 6009 Australia
- School of Molecular and Life Sciences; Curtin University; Bentley Western Australia 6102 Australia
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56
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Ali JM, D'Souza DL, Schwarz K, Allmon LG, Singh RP, Snow DD, Bartelt-Hunt SL, Kolok AS. Response and recovery of fathead minnows (Pimephales promelas) following early life exposure to water and sediment found within agricultural runoff from the Elkhorn River, Nebraska, USA. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 618:1371-1381. [PMID: 29054649 DOI: 10.1016/j.scitotenv.2017.09.259] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/16/2017] [Accepted: 09/24/2017] [Indexed: 06/07/2023]
Abstract
Agricultural runoff is a non-point source of chemical contaminants that are seasonally detected in surface water and sediments. Agrichemicals found within seasonal runoff can elicit endocrine disrupting effects in organisms as adults, juveniles and larvae. The objectives of this study were (1) to determine if exposure to water, sediment or the water-sediment combination collected from an agricultural runoff event was responsible for changes in endocrine-responsive gene expression and development in fathead minnow larvae, and (2) whether such early life exposure leads to adverse effects as adults. Larvae were exposed during the first month post-hatch to water and sediment collected from the Elkhorn River and then allowed to depurate in filtered water until reaching sexual maturity, exemplifying a best-case recovery scenario. Gas chromatography mass spectrometry (GC/MS) analysis of the water and sediment samples detected 12 pesticides including atrazine, acetochlor, metolachlor and dimethenamid. In minnow larvae, exposure to river water upregulated androgen receptor gene expression whereas exposure to the sediment downregulated estrogen receptor α expression. Adult males previously exposed to both water and sediment were feminized through the induction of an ovipositor structure whereas no impacts were observed in other reproductive or sex characteristic endpoints for either sex based on exposure history. Results from this study indicate that both water and sediments found in agricultural runoff elicit responses from minnow larvae, and larvae can recover following early life exposure under a best-case scenario.
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Affiliation(s)
- Jonathan M Ali
- Department of Environmental, Agricultural and Occupational Health, University of Nebraska - Medical Center, Omaha, NE 68198-6805, United States
| | - Del L D'Souza
- Department of Biology, University of Nebraska at Omaha, Omaha, NE 68182-0040, United States
| | - Kendall Schwarz
- Department of Biology, University of Nebraska at Omaha, Omaha, NE 68182-0040, United States
| | - Luke G Allmon
- Department of Biology, University of Nebraska at Omaha, Omaha, NE 68182-0040, United States
| | - Rajeev P Singh
- Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi 221005, India
| | - Daniel D Snow
- Nebraska Water Center, University of Nebraska-Lincoln, Lincoln, NE 68583-0844, United States
| | - Shannon L Bartelt-Hunt
- Department of Civil Engineering, University of Nebraska-Lincoln, Peter Kiewit Institute, Omaha, NE 68182-0178, United States
| | - Alan S Kolok
- Department of Environmental, Agricultural and Occupational Health, University of Nebraska - Medical Center, Omaha, NE 68198-6805, United States; Department of Biology, University of Nebraska at Omaha, Omaha, NE 68182-0040, United States; Idaho Water Resources Research Institute, University of Idaho, Moscow, ID 83844-3002, United States.
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57
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Interactions of Microplastics with Freshwater Biota. THE HANDBOOK OF ENVIRONMENTAL CHEMISTRY 2018. [DOI: 10.1007/978-3-319-61615-5_8] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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58
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Ali JM, Sangster JL, Snow DD, Bartelt-Hunt SL, Kolok AS. Compensatory response of fathead minnow larvae following a pulsed in-situ exposure to a seasonal agricultural runoff event. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 603-604:817-826. [PMID: 28385422 DOI: 10.1016/j.scitotenv.2017.03.093] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 03/09/2017] [Accepted: 03/09/2017] [Indexed: 06/07/2023]
Abstract
Agriculturally-dominated waterways such as those found throughout the Midwestern United States often experience seasonal pulses of agrichemical contaminants which pose a potential hazard to aquatic organisms at varying life stages. The objective of this study was to characterize the developmental plasticity of fathead minnow larvae in a natural environment subject to a seasonal episodic perturbation in the form of a complex mixture of agricultural stressors. Fathead minnow larvae were maintained at the Elkhorn River Research Station for a 28-d in situ exposure to an agrichemical pulse event. Minnow larvae were sampled after 14 and 28days to characterize developmental plasticity through growth measures and relative gene expression. Concentrations of agrichemical contaminants measured in water using polar organic chemical integrative samplers and composite sediment samples throughout the 28-d exposure were quantified using gas chromatography-mass spectrometry. Elevated concentrations of acetochlor, atrazine, and metolachlor were indicative of inputs from agricultural sources and were associated with reductions in body mass, condition factor, and androgenic gene expression in river exposed fathead minnow larvae. However, following a 14-d in situ depuration during the post-pulse period, river exposed larvae overcompensated in previously suppressed biological endpoints. These results indicate that fathead minnow larvae are capable of compensatory responses following episodic exposure to agrichemical stressors.
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Affiliation(s)
- Jonathan M Ali
- Department of Environmental, Agricultural and Occupational Health, University of Nebraska - Medical Center, Omaha, NE 68198-6805, United States
| | - Jodi L Sangster
- Department of Civil Engineering, University of Nebraska-Lincoln, Peter Kiewit Institute, Omaha, NE 68182-0178, United States; USDA-ARS, U.S. Salinity Laboratory, Riverside, CA 92507-4617, United States
| | - Daniel D Snow
- Nebraska Water Center and School of Natural Resources, University of Nebraska-Lincoln, Lincoln, NE 68583-0844, United States
| | - Shannon L Bartelt-Hunt
- Department of Civil Engineering, University of Nebraska-Lincoln, Peter Kiewit Institute, Omaha, NE 68182-0178, United States
| | - Alan S Kolok
- Department of Environmental, Agricultural and Occupational Health, University of Nebraska - Medical Center, Omaha, NE 68198-6805, United States; Department of Biology, University of Nebraska at Omaha, Omaha, NE 68182-0040, United States.
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59
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Meseck SL, Li Y, Sunila I, Dixon M, Clark P, Lipsky C, Stevens JR, Music P, Wikfors GH. Characterizing seston in the Penobscot River Estuary. MARINE ENVIRONMENTAL RESEARCH 2017; 131:43-56. [PMID: 28941643 DOI: 10.1016/j.marenvres.2017.09.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 09/12/2017] [Accepted: 09/12/2017] [Indexed: 06/07/2023]
Abstract
The Penobscot River Estuary is an important system for diadromous fish in the Northeast United States of American (USA), in part because it is home to the largest remnant population of Atlantic salmon, Salmo salar, in the country. Little is known about the chemical and biological characteristics of seston in the Penobscot River Estuary. This study used estuarine transects to characterize the seston during the spring when river discharge is high and diadromous fish migration peaks in the Penobscot River Estuary. To characterize the seston, samples were taken in spring 2015 for phytoplankton identification, total suspended matter (TSM), percent organic TSM, chlorophyll a, particle size (2 μm-180 μm), particulate carbon and nitrogen concentrations, and stable carbon and nitrogen isotopes. The estuarine profiles indicate that TSM behaved non-conservatively with a net gain in the estuary. As phytoplankton constituted only 1/1000 of the particles, the non-conservative behavior of TSM observed in the estuary was most likely not attributable to phytoplankton. Particulate carbon and nitrogen ratios and stable isotope signals indicate a strong terrestrial, allochthonous signal. The seston in the Penobscot River Estuary was dominated by non-detrital particles. During a short, two-week time period, Heterosigma akashiwo, a phytoplankton species toxic to finfish, also was detected in the estuary. A limited number of fish samples, taken after the 2015 Penobscot River Estuary bloom of H. akashiwo, indicated frequent pathological gill damage. The composition of seston, along with ichthyotoxic algae, suggest the need for further research into possible effects upon resident and migratory fish in the Penobscot River Estuary.
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Affiliation(s)
- Shannon L Meseck
- National Ocean and Atmospheric Administration, National Marine Fisheries Services, Ecosystem and Aquaculture Division, 212 Rogers Ave., Milford, CT 06460, United States.
| | - Yaqin Li
- National Ocean and Atmospheric Administration, National Marine Fisheries Services, Ecosystem and Aquaculture Division, 212 Rogers Ave., Milford, CT 06460, United States
| | - Inke Sunila
- State of Connecticut, Department of Agriculture, Bureau of Aquaculture, P.O. Box 97, 190 Rogers Avenue, Milford, CT 06460, United States
| | - Mark Dixon
- National Ocean and Atmospheric Administration, National Marine Fisheries Services, Ecosystem and Aquaculture Division, 212 Rogers Ave., Milford, CT 06460, United States
| | - Paul Clark
- National Ocean and Atmospheric Administration, National Marine Fisheries Services, Ecosystem and Aquaculture Division, 212 Rogers Ave., Milford, CT 06460, United States
| | - Christine Lipsky
- National Ocean and Atmospheric Administration, National Marine Fisheries Services, Atlantic Salmon Ecosystems Research Team, 17 Godfrey Drive - Suite 1, Orono, ME 04473, United States
| | - Justin R Stevens
- Integrated Statistics Under Contract to National Ocean and Atmospheric Administration, National Marine Fisheries Services, 17 Godfrey Drive - Suite 1, Orono, ME 04473, United States
| | - Paul Music
- Integrated Statistics Under Contract to National Ocean and Atmospheric Administration, National Marine Fisheries Services, 17 Godfrey Drive - Suite 1, Orono, ME 04473, United States
| | - Gary H Wikfors
- National Ocean and Atmospheric Administration, National Marine Fisheries Services, Ecosystem and Aquaculture Division, 212 Rogers Ave., Milford, CT 06460, United States
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60
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Occupancy and Detection of Clinch Dace Using Two Gear Types. JOURNAL OF FISH AND WILDLIFE MANAGEMENT 2017. [DOI: 10.3996/022017-jfwm-017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Abstract
The Clinch Dace Chrosomus sp. cf. saylori, discovered in 1999, is an undescribed headwater fish species of global conservation concern with a limited distribution in two counties in southwest Virginia. Highly efficient sampling gears are key to monitoring headwater fish assemblages in Appalachia, including those containing Clinch Dace. Additional information is needed regarding the habitat requirements of the species to understand responses to future mining and logging activities in the region. An occupancy modeling framework is useful to account for incomplete detection, with multiple sampling gears in presence–absence surveys for cryptic or rare species. We detected Clinch Dace at 13 of 70 sites. Occupancy corrected for imperfect detection probability did not differ from naïve occupancy estimates and was 0.19. Clinch Dace occurred in streams with higher substrate embeddedness and catchment forest cover. Backpack electrofishing had a 55% higher probability of detecting Clinch Dace in a 50-m subreach than minnow traps. Appropriate management actions for this species may focus on preserving forested cover in occupied watersheds and monitoring the future impact of surface mining activities that increase total dissolved solids. Sampling protocols for the imperiled Clinch Dace can incorporate both gears and adjust sampling effort to maximize species detection in specific habitats and with specific research goals.
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61
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Moniruzzaman M, Mukherjee J, Das D, Chakraborty SB. Impact of physical aquatic parameters on the annual rhythmicity of sex steroid and cortisol and their interrelationship in two distantly related fish population. BIOL RHYTHM RES 2017. [DOI: 10.1080/09291016.2016.1275399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - Joyita Mukherjee
- Ecological Modelling Laboratory, Department of Zoology, Visva-Bharati University, Santiniketan, India
| | - Debjit Das
- Department of Zoology, University of Calcutta, Kolkata, India
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Frémion F, Courtin-Nomade A, Bordas F, Lenain JF, Jugé P, Kestens T, Mourier B. Impact of sediments resuspension on metal solubilization and water quality during recurrent reservoir sluicing management. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 562:201-215. [PMID: 27100001 DOI: 10.1016/j.scitotenv.2016.03.178] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 03/23/2016] [Accepted: 03/24/2016] [Indexed: 06/05/2023]
Abstract
In dam contexts, sluicing operations can be performed to reestablish sediments continuity, as proposed by the EU Water Framework Directive, as well as to preserve the reservoirs' water storage capacity. Such management permits the rapid release of high quantities of reservoir sediments through the opening of dam bottom valves. This work aims to study the impact of such operation on the evolution of environmental physicochemical conditions notably changes in dissolved metallic elements concentrations (Al, As, Cd, Cr, Cu, Fe, Mn, Ni, Pb, Zn) through field and laboratory investigations. Results were interpreted in terms of concentrations and fluxes, and compared with data collected on an annual basis regarding both suspended matter and metallic elements. The release of high quantities of sediments (4,500tons dry weight in 24h), with concentrations representing up to 300 times the inter-annual mean suspended sediments discharge, significantly modified water parameters, notably solid/liquid (S/L) ratio, pH and redox conditions. Despite the fact that they are mainly trapped in stable phases, a clear increase of the solubilized metals content was measured, representing up to 60 times the maximum values of current exploitation. This solubilization is related to desorption phenomena from sediments through changes in chemical equilibriums as highlighted by laboratory characterizations and experiments. These chemical modifications are mainly attributed to S/L ratio variations. Indeed, the low S/L ratios (≤1.3g·L(-1)) measured in situ are typically the ones for which metals solubilization is the highest, as shown by laboratory experiments. Additional thermodynamic modeling highlighted that the decrease in pH measured during the operation favors the release of the free forms of metallic elements (Al and Cu), and decreases the OM complexation influence. These changes, either in term of physical conditions or speciation, increasing metals long term bioavailability notably during redeposition phase, may have adverse effects on aquatic biota.
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Affiliation(s)
- Franck Frémion
- Groupement de Recherche Eau Sol Environnement, Université de Limoges, 123 avenue Albert Thomas, 87060 Limoges Cedex, France
| | - Alexandra Courtin-Nomade
- Groupement de Recherche Eau Sol Environnement, Université de Limoges, 123 avenue Albert Thomas, 87060 Limoges Cedex, France
| | - François Bordas
- Groupement de Recherche Eau Sol Environnement, Université de Limoges, 123 avenue Albert Thomas, 87060 Limoges Cedex, France.
| | - Jean-François Lenain
- Groupement de Recherche Eau Sol Environnement, Université de Limoges, 123 avenue Albert Thomas, 87060 Limoges Cedex, France
| | - Philippe Jugé
- CETU - ELMIS Ingénieries, Université François Rabelais, , 60 Rue du Plat d'Étain, 37000 Tours, France
| | - Tim Kestens
- EDF - DPIH, Unité de Production Centre, 19 bis avenue de la Révolution, BP 406, 87012 Limoges Cedex, France
| | - Brice Mourier
- Groupement de Recherche Eau Sol Environnement, Université de Limoges, 123 avenue Albert Thomas, 87060 Limoges Cedex, France
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63
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Makrinos DL, Bowden TJ. Natural environmental impacts on teleost immune function. FISH & SHELLFISH IMMUNOLOGY 2016; 53:50-57. [PMID: 26973022 DOI: 10.1016/j.fsi.2016.03.008] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Accepted: 03/07/2016] [Indexed: 06/05/2023]
Abstract
The environment in which teleosts exist can experience considerable change. Short-term changes can occur in relation to tidal movements or adverse weather events. Long-term changes can be caused by anthropogenic impacts such as climate change, which can result in changes to temperature, acidity, salinity and oxygen capacity of aquatic environments. These changes can have important impacts on the physiology of an animal, including its immune system. This can have consequences on the well-being of the animal and its ability to protect against pathogens. This review will look at recent investigations of these types of environmental change on the immune response in teleosts.
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Affiliation(s)
| | - Timothy J Bowden
- School of Food & Agriculture, University of Maine, Orono, ME, USA
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64
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Ali JM, Farhat YA, Kolok AS. Biological Impacts in Fathead Minnow Larvae Following a 7-Day Exposure to Agricultural Runoff: A Microcosm Study. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2016; 96:432-437. [PMID: 26932228 DOI: 10.1007/s00128-016-1762-2] [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: 10/13/2015] [Accepted: 02/23/2016] [Indexed: 06/05/2023]
Abstract
The objective of this study was to investigate the impact of agricultural runoff on growth and development in fathead minnow larvae. Identifying these impacts in the field is difficult due to the complexity of pulsatile events and the challenge of maintaining larval fish under environmental conditions. This paper presents evidence of sublethal impacts on minnow larvae, maintained in microcosms, following a 7-day exposure to agricultural runoff. Fathead minnow larvae (5-12 dph) were exposed to agricultural runoff in the Elkhorn River, NE, USA. At 28 dph, 16 days after the field exposure, river exposed larvae showed reductions in body mass and length compared to controls. Female larvae exposed to river water also showed a reduction in the expression of cyp19a compared to controls. Further research will be necessary to separate the impact of agrichemicals from that of other stressors, such as suspended sediment and daily oscillation in water temperature.
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Affiliation(s)
- Jonathan M Ali
- Department of Environmental, Agricultural and Occupational Health, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Yasmine A Farhat
- Department of Biology, University of Nebraska at Omaha, 6001 Dodge St, Omaha, NE, 68182-0040, USA
| | - Alan S Kolok
- Department of Environmental, Agricultural and Occupational Health, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
- Department of Biology, University of Nebraska at Omaha, 6001 Dodge St, Omaha, NE, 68182-0040, USA.
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Sherriff SC, Rowan JS, Fenton O, Jordan P, Melland AR, Mellander PE, hUallacháin DÓ. Storm Event Suspended Sediment-Discharge Hysteresis and Controls in Agricultural Watersheds: Implications for Watershed Scale Sediment Management. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:1769-1778. [PMID: 26784287 DOI: 10.1021/acs.est.5b04573] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Within agricultural watersheds suspended sediment-discharge hysteresis during storm events is commonly used to indicate dominant sediment sources and pathways. However, availability of high-resolution data, qualitative metrics, longevity of records, and simultaneous multiwatershed analyses has limited the efficacy of hysteresis as a sediment management tool. This two year study utilizes a quantitative hysteresis index from high-resolution suspended sediment and discharge data to assess fluctuations in sediment source location, delivery mechanisms and export efficiency in three intensively farmed watersheds during events over time. Flow-weighted event sediment export was further considered using multivariate techniques to delineate rainfall, stream hydrology, and antecedent moisture controls on sediment origins. Watersheds with low permeability (moderately- or poorly drained soils) with good surface hydrological connectivity, therefore, had contrasting hysteresis due to source location (hillslope versus channel bank). The well-drained watershed with reduced connectivity exported less sediment but, when watershed connectivity was established, the largest event sediment load of all watersheds occurred. Event sediment export was elevated in arable watersheds when low groundcover was coupled with high connectivity, whereas in the grassland watershed, export was attributed to wetter weather only. Hysteresis analysis successfully indicated contrasting seasonality, connectivity and source availability and is a useful tool to identify watershed specific sediment management practices.
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Affiliation(s)
- Sophie C Sherriff
- Crops, Environment and Land Use Programme, Teagasc, Johnstown Castle, Wexford, Ireland
- Geography, School of Social Sciences, University of Dundee , Dundee, DD1 4HN, Scotland, U.K
| | - John S Rowan
- Geography, School of Social Sciences, University of Dundee , Dundee, DD1 4HN, Scotland, U.K
| | - Owen Fenton
- Crops, Environment and Land Use Programme, Teagasc, Johnstown Castle, Wexford, Ireland
| | - Philip Jordan
- School of Geography and Environmental Sciences, Ulster University , Coleraine, Co. Derry, BT52 1SA, U.K
| | - Alice R Melland
- National Centre for Engineering in Agriculture, University of Southern Queensland , Toowoomba, Australia
| | - Per-Erik Mellander
- Agricultural Catchments Programme, Crops, Environment and Land Use Programme, Teagasc, Johnstown Castle, Wexford, Ireland
| | - Daire Ó hUallacháin
- Crops, Environment and Land Use Programme, Teagasc, Johnstown Castle, Wexford, Ireland
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