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Podgorski DC, Bekins BA. Comment on "Complex mixture toxicology: Evaluation of toxicity to freshwater aquatic receptors from biodegradation metabolites in groundwater at a crude oil release site, recent analogous results from other authors, and implications for risk management". Aquat Toxicol 2023; 265:106744. [PMID: 37951746 DOI: 10.1016/j.aquatox.2023.106744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 10/31/2023] [Indexed: 11/14/2023]
Affiliation(s)
- David C Podgorski
- Pontchartrain Institute for Environmental Sciences, Chemical Analysis & Mass Spectrometry Facility, Department of Chemistry, University of New Orleans, New Orleans, LA, USA; Department of Chemistry, University of Alaska Anchorage, Anchorage, AK, USA.
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Claro RO, Rivero-Wendt CLG, Miranda-Vilela AL, Grisolia CK, Facco GG, Moreira DDL, Matias R, Guilhermino JDF. Toxicological effects of aqueous extract of Genipa americana L. leaves on adult zebrafish (Danio rerio): Chemical profile, histopathological effects and lack of genotoxicity. Toxicon 2023; 235:107305. [PMID: 37839738 DOI: 10.1016/j.toxicon.2023.107305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/27/2023] [Accepted: 09/27/2023] [Indexed: 10/17/2023]
Abstract
Genipa americana is a native plant of Brazil with potential applications in folk medicine. Whereas most of the phytochemical and pharmacological studies on this plant have focused on its fruits, the crude extracts of its leaves contain chemical metabolites that may have toxicity to organisms, which have yet to be investigated. This study aimed to determine the main groups of secondary metabolites in the aqueous extract of the leaves of G. americana by phytochemistry and qualitative HPLC, and to evaluate the possible toxicological effects and histopathological changes caused by this extract in zebrafish (Danio rerio) adults, through micronucleus test, nuclear abnormalities and histopathological analyses of gills and liver. While three metabolites of high intensity (phenolic compounds, flavonoids and triterpenes) were found in the phytochemical evaluation, the HPLC showed results compatible with flavonoids and iridoids, all belonging to common classes for this species and the Rubiaceae family. The acute toxicity test did not induce mortality or genotoxicity in zebrafish, but after exposure for 96 h, it was possible to observe injuries to the fish gill tissue, such as lamellar fusion, vasodilation and telangiectasia; in the liver, necrosis was visualized at 40 mg/L, and at higher concentrations (80 and 100 mg/L) induced sinusoidal widening was identified. In conclusion, the results demonstrated the toxic potential of this plant for aquatic species.
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Affiliation(s)
- Raquel Oliveira Claro
- Graduate Program in Environment and Regional Development, Universidade Anhanguera -Uniderp. Rua Alexandre Herculano, 1400, Jardim Veraneio, 79037-280, Campo Grande, Mato Grosso do Sul, Brazil.
| | - Carla Letícia Gediel Rivero-Wendt
- Graduate Program in Animal Biology, Federal University of Mato Grosso do Sul. Av. Costa e Silva, Pioneiros, 79070-900, Campo Grande, Mato Grosso do Sul, Brazil.
| | | | - Cesar Koppe Grisolia
- Biological Sciences Institute, University of Brasília. Campus Universitário Darcy Ribeiro, Bloco E, Asa Norte, 70910-900, Brasília, Distrito Federal, Brazil.
| | - Gilberto Golçalves Facco
- Graduate Program in Environment and Regional Development, Universidade Anhanguera -Uniderp. Rua Alexandre Herculano, 1400, Jardim Veraneio, 79037-280, Campo Grande, Mato Grosso do Sul, Brazil.
| | - Davyson de Lima Moreira
- Natural Products Department, Far-Manguinhos, Fundação Oswaldo Cruz, Rua Sizenando Nabuco 100, 21041-250, Rio de Janeiro, RJ, Brazil.
| | - Rosemary Matias
- Graduate Program in Environment and Regional Development, Universidade Anhanguera -Uniderp. Rua Alexandre Herculano, 1400, Jardim Veraneio, 79037-280, Campo Grande, Mato Grosso do Sul, Brazil.
| | - Jislaine de Fátima Guilhermino
- Natural Products Department, Far-Manguinhos, Fundação Oswaldo Cruz, Rua Sizenando Nabuco 100, 21041-250, Rio de Janeiro, RJ, Brazil
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Nahrgang J, Granlund C, Bender ML, Sørensen L, Greenacre M, Frantzen M. No observed developmental effects in early life stages of capelin (Mallotus villosus) exposed to a water-soluble fraction of crude oil during embryonic development. J Toxicol Environ Health A 2023; 86:404-419. [PMID: 37171367 DOI: 10.1080/15287394.2023.2209115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The rise in offshore oil and gas operations, maritime shipping, and tourism in northern latitudes enhances the risk of oil spills to sub-Arctic and Arctic coastal environments. Therefore, there is a need to understand the potential adverse effects of petroleum on key species in these areas. Here, we investigated the effects of oil exposure on the early life stages of capelin (Mallotus villosus), an ecologically and commercially important Barents Sea forage fish species that spawns along the coast of Northern Norway. Capelin embryos were exposed to five different concentrations (corresponding to 0.5-19 µg/L total PAHs) of water-soluble fraction (WSF) of crude oil from 6 days post fertilization (dpf) until hatch (25 dpf), and development of larvae in clean seawater was monitored until 52 dpf. None of the investigated endpoints (embryo development, larval length, heart rate, arrhythmia, and larval mortality) showed any effects. Our results suggest that the early life stages of capelin may be more robust to crude oil exposure than similar life stages of other fish species.
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Affiliation(s)
- Jasmine Nahrgang
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, Norway
| | - Cassandra Granlund
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, Norway
| | - Morgan Lizabeth Bender
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, Norway
- Akvaplan-niva, Fram Centre, Tromsø, Norway
- Owl Ridge Natural Resource Consultants, Inc, Anchorage, USA
| | | | - Michael Greenacre
- Department of Economics and Business, Universitat Pompeu Fabra, and Barcelona School of Management, Barcelona, Spain
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Viganò L, Guzzella L, Marziali L, Mascolo G, Bagnuolo G, Ciannarella R, Roscioli C. The last 50 years of organic contamination of a highly anthropized tributary of the Po River (Italy). J Environ Manage 2023; 326:116665. [PMID: 36423407 DOI: 10.1016/j.jenvman.2022.116665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 10/11/2022] [Accepted: 10/29/2022] [Indexed: 06/16/2023]
Abstract
We examined the temporal profiles of many organic micropollutants analysed in a sediment core sampled from a highly anthropized tributary of the Po River, the Lambro River. Analysed for extractable organic halogens (EOX), total petroleum hydrocarbons (C10-C40TPH), polycyclic aromatic hydrocarbons (PAHs), common legacy pollutants (DDTs, PCBs), halogenated flame retardants (PBDEs, DBDPE, TBBPA-bis, TCBPA, TBBPA, HBCDs), organotins (TBT, TPhT), antimicrobials (TCS, TCC), fragrances (AHTN, HHCB) and phthalates (DMP, DEP, DnBP, BBP, DEHP, DnOP), the dated sediment core revealed the historical record of 50 years of chemical contamination discharged into the Lambro and thereby the Po River. In this regard, the peak levels of PCBs and DDTs found in Lambro sediments were also identified in other sediment cores collected from the Po River prodelta in the Adriatic Sea, thus hundreds of kilometres downstream (Combi et al., 2020). The highest risk to aquatic organisms was associated with decades of high levels of C10-C40 TPH, PBDEs, PCBs, PAHs, DDTs, EOX, TCC, AHTN and DEHP, which in different periods of the contamination history, showed exceedances of guideline/threshold values. C10-C40 TPH and TCC, for example, were very high in the 1960s, whereas PCBs, DDTs, and PBDEs, peaked from the 1980s onward. The corresponding sums of PEC quotients ranged between 0.48 and 28.63, with a mean value (±SD) for the entire recording period of 10.62 ± 9.83. Environmental legislations and improved wastewater treatments were the main drivers of the recent downward trends observed for most of the chemicals investigated. Floods in turn resulted in macroscopic yet temporary improvements in the chemical quality of the tributary, conveying contaminated sediments into the Po River.
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Affiliation(s)
- Luigi Viganò
- Water Research Institute, National Research Council, (IRSA - CNR), Via del Mulino 19, 20861, Brugherio, MB, Italy.
| | - Licia Guzzella
- Water Research Institute, National Research Council, (IRSA - CNR), Via del Mulino 19, 20861, Brugherio, MB, Italy
| | - Laura Marziali
- Water Research Institute, National Research Council, (IRSA - CNR), Via del Mulino 19, 20861, Brugherio, MB, Italy
| | - Giuseppe Mascolo
- Water Research Institute, National Research Council, (IRSA - CNR), Via De Blasio 5, 70132, Bari, Italy
| | - Giuseppe Bagnuolo
- Water Research Institute, National Research Council, (IRSA - CNR), Via De Blasio 5, 70132, Bari, Italy
| | - Ruggero Ciannarella
- Water Research Institute, National Research Council, (IRSA - CNR), Via De Blasio 5, 70132, Bari, Italy
| | - Claudio Roscioli
- Water Research Institute, National Research Council, (IRSA - CNR), Via del Mulino 19, 20861, Brugherio, MB, Italy
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Bulbul M, Bhattacharya S, Ankit Y, Yadav P, Anoop A. Occurrence, distribution and sources of phthalates and petroleum hydrocarbons in tropical estuarine sediments (Mandovi and Ashtamudi) of western Peninsular India. Environ Res 2022; 214:113679. [PMID: 35714689 DOI: 10.1016/j.envres.2022.113679] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 04/28/2022] [Accepted: 06/10/2022] [Indexed: 06/15/2023]
Abstract
The present study provides baseline information on the concentration levels, distribution characteristics and pollution sources of environmental contaminants, such as phthalic acid esters (PAEs or phthalates) and petroleum hydrocarbons in surface sediments of the tropical estuaries (Mandovi and Ashtamudi) from western Peninsular India. Total PAEs (∑5PAEs), hopanes, steranes and diasteranes concentrations from Ashtamudi estuary ranged from 7.77 to 1478.2 ng/g, n.d.-363.2 ng/g, n.d.-121.5 ng/g and n.d.-116.6 ng/g, respectively. Likewise, PAEs (∑6PAEs), steranes and diasteranes concentrations from Mandovi estuary ranged from 60.1 to 271.9 ng/g, 2.33-40.1 ng/g and 2.28-23.0 ng/g, respectively. The PAEs comprising di-isobutyl phthalate (DIBP), dibutyl phthalate (DBP), an isomer peak for DBP, di(2-ethylhexyl) phthalate (DEHP), di-isononyl phthalate were dominant in Ashtamudi estuary sediments, while PAEs including diethyl phthalate, DIBP, DBP and its isomer, DEHP, di(2-ethylhexyl) terephthalate were detected in the Mandovi sediment samples. The results of this study show an insignificant correlation of TOC with PAEs, and indicates that the varying spatial distributions of the PAEs in both the estuaries can be the result of discharge sources. The higher concentration of PAE congeners was noticed in Ashtamudi, a Ramsar wetland site, that can be attributed to land-based plastic waste. The petroleum biomarkers were abundantly present in Mandovi estuary due to anthropogenic activities such as boating and spillage from oil tankers. The findings of the present study will serve as a reference point for future investigation of organic contaminants in Indian estuaries, and calls for attention towards implementing effective measures in controlling the pervasion of the PAEs and petroleum biomarkers.
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Affiliation(s)
- Mehta Bulbul
- Indian Institute of Science Education and Research, Mohali, 140306, India.
| | | | - Yadav Ankit
- Indian Institute of Science Education and Research, Mohali, 140306, India
| | - Pushpit Yadav
- Indian Institute of Science Education and Research, Mohali, 140306, India
| | - Ambili Anoop
- Indian Institute of Science Education and Research, Mohali, 140306, India
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Choi B, Yu J, Kang G, Jeong T, Jho EH, Lee S. Pyrolytic Remediation and Ecotoxicity Assessment of Fuel-Oil-Contaminated Soil. Toxics 2022; 10:245. [PMID: 35622658 PMCID: PMC9144531 DOI: 10.3390/toxics10050245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 05/07/2022] [Accepted: 05/10/2022] [Indexed: 11/24/2022]
Abstract
Oil-contaminated soil is a major societal problem for humans and the environment. In this study, the pyrolysis method was applied to oil-contaminated soil used as a landfill and gas station site in Korea. The removal efficiency of the main components of oil-contaminated soils, such as total petroleum hydrocarbons (TPH), polyaromatic hydrocarbons (PAHs), unresolved complex mixture (UCM), and alkylated PAHs (Alk-PAHs) were measured, and the effect of temperature, treatment time, and moisture content on pyrolysis efficiency was studied. In order to evaluate the risk of soil from which pollutants were removed through pyrolysis, integrated ecotoxicity was evaluated using Daphnia magna and Allivibrio fischeri. The chemical and biological measurements in this study include contaminants of emerging concerns (CECs). Results showed that the pyrolysis was more efficient with higher treatment temperatures, moisture content, and treatment times. In addition, toxicity was reduced by 99% after pyrolysis, and the degree of toxicity was evaluated more sensitively in Allivibrio fischeri than in Daphnia magna. This study shows that weathered oil-contaminated soil can be effectively treated in a relatively short time through pyrolysis, as well as provides information on efficient conditions and the assessment of ecotoxicity.
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André C, Pilote M, Gagnon C, Gagné F. Ecotoxicological impacts of oil sand mining activity to endemic caged mussels Pyganodon grandis. Comp Biochem Physiol C Toxicol Pharmacol 2022; 251:109193. [PMID: 34597779 DOI: 10.1016/j.cbpc.2021.109193] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 09/03/2021] [Accepted: 09/20/2021] [Indexed: 11/03/2022]
Abstract
The intense mining extraction of oil sand (OS) has increased over the last few decades, raising concerns about the release of OS contaminants and toxicity in resident aquatic organisms in the Athabasca River (Alberta, Canada). To address this, endemic Pyganodon grandis mussels were caged for 6 weeks at various upstream and downstream sites of industrial OS mining activities. Post-exposure mussels were then analyzed for light/medium/heavy polyaromatic hydrocarbons (PAHs) in tissues, general health (weight to length ratio, growth rate, air survival time), biotransformation (cytochrome P4501A and 3A and glutathione S-transferase activities), oxidative stress/inflammation (lipid peroxidation-LPO and arachidonate cyclooxygenase-COX), genotoxicity (DNA strand breaks), and gonad status (triglycerides, GSI and vitellogenin-like proteins). The following effects significantly differed between OS mining area and natural/background sites: health condition, growth rate, air survival time, COX (immune/inflammation) activity, P4501A/GST activity, LPO and DNA breaks in the digestive gland and vitellogenin-like proteins in the gonad. Correlation analysis revealed that the biochemical responses were scaled to at least one of the following impacts at the individual level: air survival time, weight to length ratio, growth rate and vitellogenin-like proteins. These indices were therefore identified as key adverse outcome pathways of mussels impacted by OS mining activities. Based on the relative levels of light/medium/heavy PAHs in tissues, the observed effects appears to be associated rather to the disturbance of OS in this area than contamination from OS tailing ponds leaching into the aquatic environment.
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Affiliation(s)
- C André
- Aquatic Contaminants Research Division, Environment and Climate Change Canada, 105 McGill, Montréal, Québec, Canada
| | - M Pilote
- Aquatic Contaminants Research Division, Environment and Climate Change Canada, 105 McGill, Montréal, Québec, Canada
| | - C Gagnon
- Aquatic Contaminants Research Division, Environment and Climate Change Canada, 105 McGill, Montréal, Québec, Canada
| | - F Gagné
- Aquatic Contaminants Research Division, Environment and Climate Change Canada, 105 McGill, Montréal, Québec, Canada.
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Zito P, Smith DF, Cao X, Ghannam R, Tarr MA. Barium ion adduct mass spectrometry to identify carboxylic acid photoproducts from crude oil-water systems under solar irradiation. Environ Sci Process Impacts 2020; 22:2313-2321. [PMID: 33150906 DOI: 10.1039/d0em00390e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Petroleum derived dissolved organic matter (DOMHC) samples were successfully cationized with barium, revealing many [M-H + Ba]+ peaks in both dark and simulated sunlight treatments. The DOMHC samples generated after light exposure exhibited a greater number of [M-H + Ba]+ peaks compared to the dark control. Multiple [M-H + Ba]+ peaks were investigated in the irradiated DOMHC using low resolution MS/MS in order to confirm the presence of diagnostic fragment ions, m/z 139, 155 and 196 in each treatment. Due to the high complexity of the bariated DOMHC mixture, Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS/MS) was employed to obtain molecular level information for both irradiated and dark treatments. The irradiated DOMHC treatments had more bariated oxygenated species over a wide range of H/C and O/C when compared to the dark controls. Doubly bariated species were also observed in DOMHC, which provides evidence that photochemistry transforms DOMHC to even more complex mixtures with multiple oxygenations per molecule. This study provides evidence that barium adduct mass spectrometry can be successfully applied to DOMHC screening for the presence of COOHs, both in dark samples and solar irradiated samples. Furthermore, direct evidence and molecular composition of aqueous phase crude oil photoproducts is provided by this technique.
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Affiliation(s)
- Phoebe Zito
- Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148, USA. and Pontchartrain Institute for Environmental Sciences, Chemical Analysis & Mass Spectrometry Facility, University of New Orleans, New Orleans, Louisiana 70148, USA
| | - Donald F Smith
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
| | - Xian Cao
- Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148, USA.
| | - Rana Ghannam
- Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148, USA. and Pontchartrain Institute for Environmental Sciences, Chemical Analysis & Mass Spectrometry Facility, University of New Orleans, New Orleans, Louisiana 70148, USA
| | - Matthew A Tarr
- Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148, USA.
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Beyer J, Goksøyr A, Hjermann DØ, Klungsøyr J. Environmental effects of offshore produced water discharges: A review focused on the Norwegian continental shelf. Mar Environ Res 2020; 162:105155. [PMID: 32992224 DOI: 10.1016/j.marenvres.2020.105155] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/15/2020] [Accepted: 09/17/2020] [Indexed: 06/11/2023]
Abstract
Produced water (PW), a large byproduct of offshore oil and gas extraction, is reinjected to formations or discharged to the sea after treatment. The discharges contain dispersed crude oil, polycyclic aromatic hydrocarbons (PAHs), alkylphenols (APs), metals, and many other constituents of environmental relevance. Risk-based regulation, greener offshore chemicals and improved cleaning systems have reduced environmental risks of PW discharges, but PW is still the largest operational source of oil pollution to the sea from the offshore petroleum industry. Monitoring surveys find detectable exposures in caged mussel and fish several km downstream from PW outfalls, but biomarkers indicate only mild acute effects in these sentinels. On the other hand, increased concentrations of DNA adducts are found repeatedly in benthic fish populations, especially in haddock. It is uncertain whether increased adducts could be a long-term effect of sediment contamination due to ongoing PW discharges, or earlier discharges of oil-containing drilling waste. Another concern is uncertainty regarding the possible effect of PW discharges in the sub-Arctic Southern Barents Sea. So far, research suggests that sub-arctic species are largely comparable to temperate species in their sensitivity to PW exposure. Larval deformities and cardiac toxicity in fish early life stages are among the biomarkers and adverse outcome pathways that currently receive much attention in PW effect research. Herein, we summarize the accumulated ecotoxicological knowledge of offshore PW discharges and highlight some key remaining knowledge needs.
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Affiliation(s)
- Jonny Beyer
- Norwegian Institute for Water Research (NIVA), Oslo, Norway.
| | - Anders Goksøyr
- Department of Biological Sciences, University of Bergen, Norway; Institute of Marine Research (IMR), Bergen, Norway
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Dey S, Ballav P, Mandal A, Samanta P, Patra A, Das S, Mondal AK, Ghosh AR. Blood Biochemical and Erythrocytic Morpho-pathological Consequences of Naphthalene Intoxication in Indian Teleost, Anabas testudineus (Bloch). Environ Toxicol Pharmacol 2020; 80:103490. [PMID: 32911098 DOI: 10.1016/j.etap.2020.103490] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 08/24/2020] [Accepted: 09/06/2020] [Indexed: 06/11/2023]
Abstract
Anabas testudineus (Bloch) was exposed to 0.71 mg/L and 1.42 mg/L (25 and 50% of LC50 value respectively) naphthalene, a polycyclic aromatic hydrocarbon (PAH), for 21 days. Blood biochemical parameters and erythrocytic morphological alterations were assessed to describe the naphthalene toxicity. Biochemical analysis showed a significant increase in glutamic pyruvic transaminase, GPT (576.7 ± 11.79 and 608.9 ± 12.08 U/L, respectively) and alkaline phosphatase, ALP (12.9 ± 0.69 and 13.4 ± 0.64 U/L, respectively) activities under two doses compared with control. Protein and albumin (ALB) content in blood decreased significantly, in comparison with control value in the tune of 22.67 ± 1.04 and 23.97 ± 1.24 g/dl, respectively and 10.7 ± 0.79 and 11.1 ± 0.67 g/dl, respectively. Erythrocytes showed varied symptomatic morphological changes under naphthalene exposure, which included severe denaturation, swelling in cells, appearance of sickle and tear drop cells, and cellular vacuolation. In particularly, the changes were more prominent under higher naphthalene exposure. Following the results, it has been able to establish that GPT, ALP, protein and ALB, and the morphological manifestations of erythrocytes would be good tools of biomarker in monitoring toxicological paradigm, especially to naphthalene exposure in aquatic bodies.
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Affiliation(s)
- Sukhendu Dey
- Department of Environmental Science, The University of Burdwan, Burdwan 713104, West Bengal, India.
| | - Puspita Ballav
- Department of Environmental Science, The University of Burdwan, Burdwan 713104, West Bengal, India.
| | - Arghya Mandal
- Department of Environmental Science, The University of Burdwan, Burdwan 713104, West Bengal, India.
| | - Palas Samanta
- Department of Environmental Science, Sukanta Mahavidyalaya, University of North Bengal, Dhupguri, West Bengal, India.
| | - Atanu Patra
- Department of Environmental Science, The University of Burdwan, Burdwan 713104, West Bengal, India.
| | - Subhas Das
- Department of Environmental Science, The University of Burdwan, Burdwan 713104, West Bengal, India.
| | - Arnab Kumar Mondal
- Department of Environmental Science, The University of Burdwan, Burdwan 713104, West Bengal, India.
| | - Apurba Ratan Ghosh
- Department of Environmental Science, The University of Burdwan, Burdwan 713104, West Bengal, India.
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Gofstein TR, Perkins M, Field J, Leigh MB. The Interactive Effects of Crude Oil and Corexit 9500 on Their Biodegradation in Arctic Seawater. Appl Environ Microbiol 2020; 86:e01194-20. [PMID: 32826215 DOI: 10.1128/AEM.01194-20] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 08/10/2020] [Indexed: 11/20/2022] Open
Abstract
Chemical dispersants such as Corexit 9500 are commonly used in oil spill response and are currently under consideration for use in the Arctic, where their fate and effects have not been well studied. This research was performed to determine the interactive effects of the copresence of crude oil and Corexit 9500 on the degradation of components from each mixture and the associated microbial community structure over time in Arctic seawater. These findings will help yield a better understanding of the biodegradability of dispersant components applied to an oil spill, the temporal microbial community response to dispersed oil, and the fundamental microbial ecology of organic contaminant biodegradation processes in the Arctic marine environment. The risk of petroleum spills coupled with the potential application of chemical dispersants as a spill response strategy necessitates further understanding of the fate of oil and dispersants and their interactive effects during biodegradation. Using Arctic seawater mesocosms amended with either crude oil, Corexit 9500, or both together, we quantified the chemical losses of crude oil and Corexit 9500 and identified microbial taxa implicated in their biodegradation based on shifts in the microbial community structure over a 30-day time course. Chemical analyses included total petroleum hydrocarbons (TPH), n-alkanes, branched alkanes, and polycyclic aromatic hydrocarbons (PAHs) for oil loss and the surfactant components dioctyl sodium sulfosuccinate (DOSS), Span 80, Tween 80, Tween 85, and the DOSS metabolite ethylhexyl sulfosuccinate (EHSS) for Corexit loss. Changes to the microbial communities and identification of key taxa were determined by 16S rRNA gene amplicon sequencing. The nonionic surfactants of Corexit 9500 (Span 80 and Tweens 80 and 85) biodegraded rapidly, dropping to below the limits of detection within 5 days and prior to any detectable initiation of oil biodegradation. This resulted in no observable suppression of petroleum biodegradation in the presence of Corexit compared to that of oil alone. In contrast, biodegradation of DOSS was delayed in the presence of oil, based on the prolonged presence of DOSS and accumulation of the degradation intermediate EHSS that did not occur in the absence of oil. Microbial analyses revealed that oil and Corexit enriched different overall microbial communities, with the presence of both resulting in a community composition that shifted from one more similar to that of Corexit only to one reflecting the oil-only community over time, in parallel with the degradation of predominantly Corexit and then oil components. Some microbial taxa (Oleispira, Pseudofulvibacter, and Roseobacter) responded to either oil or Corexit, suggesting that some organisms may be capable of utilizing both substrates. Together, these findings reveal interactive effects of crude oil and Corexit 9500 on chemical losses and microbial communities as they biodegrade, providing further insight into their fate when copresent in the environment. IMPORTANCE Chemical dispersants such as Corexit 9500 are commonly used in oil spill response and are currently under consideration for use in the Arctic, where their fate and effects have not been well studied. This research was performed to determine the interactive effects of the copresence of crude oil and Corexit 9500 on the degradation of components from each mixture and the associated microbial community structure over time in Arctic seawater. These findings will help yield a better understanding of the biodegradability of dispersant components applied to an oil spill, the temporal microbial community response to dispersed oil, and the fundamental microbial ecology of organic contaminant biodegradation processes in the Arctic marine environment.
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Colvin KA, Lewis C, Galloway TS. Current issues confounding the rapid toxicological assessment of oil spills. Chemosphere 2020; 245:125585. [PMID: 31855760 DOI: 10.1016/j.chemosphere.2019.125585] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 12/03/2019] [Accepted: 12/08/2019] [Indexed: 06/10/2023]
Abstract
Oil spills of varying magnitude occur every year, each presenting a unique challenge to the local ecosystem. The complex, changeable nature of oil makes standardised risk assessment difficult. Our review of the state of science regarding oil's unique complexity; biological impact of oil spills and use of rapid assessment tools, including commercial toxicity kits and bioassays, allows us to explore the current issues preventing effective, rapid risk assessment of oils. We found that despite the advantages to monitoring programmes of using well validated standardised tests, which investigate impacts across trophic levels at environmentally relevant concentrations, only a small percentage of the available tests are specialised for use within the marine environment, or validated for the assessment of crude oil toxicity. We discuss the use of rapid tests at low trophic levels in addition to relevant sublethal toxicity assays to allow the characterisation of oil, dispersant and oil and dispersant mixture toxicity. We identify novel, passive dosing techniques as a practical and reproducible means of improving the accuracy and maintenance of nominal concentrations. Future work should explore the possibility of linking this tiered testing system with ecosystem models to allow the prediction and risk assessment of the entire ecosystem.
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Affiliation(s)
- Katherine A Colvin
- College of Life and Environmental Sciences, University of Exeter, Geoffrey Pope, Stocker Road, Exeter, EX4 4QD, UK.
| | - Ceri Lewis
- College of Life and Environmental Sciences, University of Exeter, Geoffrey Pope, Stocker Road, Exeter, EX4 4QD, UK
| | - Tamara S Galloway
- College of Life and Environmental Sciences, University of Exeter, Geoffrey Pope, Stocker Road, Exeter, EX4 4QD, UK
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Quintanilla-Mena M, Gold-Bouchot G, Zapata-Pérez O, Rubio-Piña J, Quiroz-Moreno A, Vidal-Martínez VM, Aguirre-Macedo ML, Puch-Hau C. Biological responses of shoal flounder (Syacium gunteri) to toxic environmental pollutants from the southern Gulf of Mexico. Environ Pollut 2020; 258:113669. [PMID: 31806456 DOI: 10.1016/j.envpol.2019.113669] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 10/23/2019] [Accepted: 11/21/2019] [Indexed: 06/10/2023]
Abstract
The Gulf of Mexico (GoM) is exposed to a diversity of contaminants, such as hydrocarbons and heavy metal(oid)s, either from natural sources or as a result of uncontrolled coastal urbanisation and industrialisation. To determine the effect of these contaminants on the marine biota along the Mexican GoM, the biological responses of the shoal flounder Syacium gunteri, naturally exposed, were studied. The study area included all the Mexican GoM, which was divided into three areas: West-southwest (WSW), South-southwest (SSW) and South-southeast (SSE). The biological responses included the global DNA methylation levels, the expression of biomarker genes related to contaminants (cytochrome P450 1A, glutathione S-transferase, glutathione reductase, glutathione peroxidase, catalase, and vitellogenin), histopathological lesions and PAH metabolites in bile (hydroxynaphthalene, hydroxyphenanthrene, hydroxypyrene and Benzo[a]pyrene). The correlation between the biological responses and the concentration of contaminants (hydrocarbons and metal(oid)s), present in both sediments and organisms, were studied. The shoal flounders in WSW and SSW areas presented higher DNA hypomethylation, less antioxidative response and biotransformation gene expression and a higher concentration of PAH metabolites in bile than SSE area; those responses were associated with total hydrocarbons and metals such as chromium (Cr). SSE biological responses were mainly associated with the presence of metals, such as cadmium (Cd) and copper (Cu), in the tissue of shoal flounders. The results obtained on the physiological response of the shoal flounder can be used as part of a permanent active environmental surveillance program to watch the ecosystem health of the Mexican GoM.
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Affiliation(s)
- Mercedes Quintanilla-Mena
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Departamento de Recursos del Mar, Unidad Mérida. Km. 6, Antigua Carretera a Progreso, Apdo. Postal 73-Cordemex, 97310 Mérida, Yucatán, Mexico
| | - Gerardo Gold-Bouchot
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Departamento de Recursos del Mar, Unidad Mérida. Km. 6, Antigua Carretera a Progreso, Apdo. Postal 73-Cordemex, 97310 Mérida, Yucatán, Mexico; Department of Oceanography and Geochemical and Environmental Research Group (GERG), Texas A&M University, College Station, TX, United States
| | - Omar Zapata-Pérez
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Departamento de Recursos del Mar, Unidad Mérida. Km. 6, Antigua Carretera a Progreso, Apdo. Postal 73-Cordemex, 97310 Mérida, Yucatán, Mexico
| | - Jorge Rubio-Piña
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Departamento de Recursos del Mar, Unidad Mérida. Km. 6, Antigua Carretera a Progreso, Apdo. Postal 73-Cordemex, 97310 Mérida, Yucatán, Mexico
| | - Adriana Quiroz-Moreno
- Centro de Investigación Científica de Yucatán, Calle 43 No. 130, Colonia Chuburna de Hidalgo, 97200 Mérida, Yucatán, Mexico
| | - Víctor Manuel Vidal-Martínez
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Departamento de Recursos del Mar, Unidad Mérida. Km. 6, Antigua Carretera a Progreso, Apdo. Postal 73-Cordemex, 97310 Mérida, Yucatán, Mexico
| | - Ma Leopoldina Aguirre-Macedo
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Departamento de Recursos del Mar, Unidad Mérida. Km. 6, Antigua Carretera a Progreso, Apdo. Postal 73-Cordemex, 97310 Mérida, Yucatán, Mexico
| | - Carlos Puch-Hau
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Departamento de Recursos del Mar, Unidad Mérida. Km. 6, Antigua Carretera a Progreso, Apdo. Postal 73-Cordemex, 97310 Mérida, Yucatán, Mexico.
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Zhao GZ, Wei M, Wang YJ, Wang XW, Zhao H, Shen J, Zhao B. Detection of four phenolic oestrogens by a novel electrochemical immunosensor based on a hexestrol monoclonal antibody. RSC Adv 2020; 10:8677-8684. [PMID: 35496517 PMCID: PMC9050000 DOI: 10.1039/d0ra00006j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Accepted: 02/17/2020] [Indexed: 12/20/2022] Open
Abstract
A novel HEX monoclonal antibody/MACA/nanogold electrochemical immunosensor was constructed to detect four phenolic oestrogens by a nanosized effect, layer by layer self-assembly and antigen–antibody specific immune technology.
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Affiliation(s)
- Guo-zheng Zhao
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials
- Ministry of Education
- The School of Chemistry and Material Science
- Shanxi Normal University
- Linfen 041004
| | - Meng Wei
- National and Local Joint Engineering Research Center of Biomedical Functional Materials
- Jiangsu Key Laboratory of Biofunctional Materials
- School of Chemistry and Materials Science
- Nanjing Normal University
- Nanjing 210023
| | - Ya-juan Wang
- National and Local Joint Engineering Research Center of Biomedical Functional Materials
- Jiangsu Key Laboratory of Biofunctional Materials
- School of Chemistry and Materials Science
- Nanjing Normal University
- Nanjing 210023
| | - Xiu-wen Wang
- National and Local Joint Engineering Research Center of Biomedical Functional Materials
- Jiangsu Key Laboratory of Biofunctional Materials
- School of Chemistry and Materials Science
- Nanjing Normal University
- Nanjing 210023
| | - Hu Zhao
- School of Life Science and Technology
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Jian Shen
- National and Local Joint Engineering Research Center of Biomedical Functional Materials
- Jiangsu Key Laboratory of Biofunctional Materials
- School of Chemistry and Materials Science
- Nanjing Normal University
- Nanjing 210023
| | - Bo Zhao
- National and Local Joint Engineering Research Center of Biomedical Functional Materials
- Jiangsu Key Laboratory of Biofunctional Materials
- School of Chemistry and Materials Science
- Nanjing Normal University
- Nanjing 210023
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15
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Meador JP, Nahrgang J. Characterizing Crude Oil Toxicity to Early-Life Stage Fish Based On a Complex Mixture: Are We Making Unsupported Assumptions? Environ Sci Technol 2019; 53:11080-11092. [PMID: 31503459 DOI: 10.1021/acs.est.9b02889] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Numerous studies of the water-soluble fraction (WSF) from crude oil have concluded that polycyclic aromatic hydrocarbons (PAHs) are the primary causative agents for early life stage (ELS) fish toxicity. Noteworthy is the lack of studies demonstrating that the sum of PAHs are capable of causing toxic effects in ELS fish at the low levels claimed (0.1-5 μg/L) without being part of a complex crude oil mixture. Crude oil and the WSF are composed of thousands of other compounds that co-occur and likely contribute to crude oil toxicity. Based on the available data, it appears that the syndrome of effects (lower heart rate, edemas, and morphological abnormalities) for ELS fish exposed to the aqueous fraction of a crude oil mixture is commonly observed in studies exposing fish embryos to high concentrations of a variety of compounds and may be a nonspecific response. We conclude that the available data support the hypothesis that this syndrome of effects is likely the result of baseline toxicity (not receptor based) due to membrane disruption and resulting alteration in ion (e.g., calcium and potassium) homeostasis. We acknowledge the possibility of some compounds in the WSF capable of causing a specific receptor based toxicity response to ELS fish; however, such compounds have not been identified nor their receptor characterized. Concluding that PAHs are the main toxic compounds for crude oil exposure is misleading and does not result in guideline values that can be useful for environmental protection. Water quality guidelines for any single chemical or suite of chemicals must be based on a complete understanding of exposure concentrations, mechanism of action, potency, and resulting response. This review focuses on the toxic effects reported for fish embryos and the purported toxic concentrations observed in the aqueous phase of an oil/water mixture, the known levels of toxicity for individual PAHs, a toxic unit approach for characterizing mixtures, and the potential molecular initiating event for ELS toxicity in fish. This review also has implications for a large number of studies exposing ELS fish to a variety of compounds at high concentrations that result in a common baseline toxic response.
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Affiliation(s)
- James P Meador
- Environmental and Fisheries Sciences Division, Northwest Fisheries Science Center, National Marine Fisheries Service , National Oceanic and Atmospheric Administration , 2725 Montlake Boulevard East , Seattle , Washington 98112 , United States
| | - Jasmine Nahrgang
- Faculty of Biosciences, Fisheries and Economics, Department of Arctic and Marine Biology , UiT The Arctic University of Norway , N-9037 Tromsø , Norway
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16
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Nahrgang J, Bender ML, Meier S, Nechev J, Berge J, Frantzen M. Growth and metabolism of adult polar cod (Boreogadus saida) in response to dietary crude oil. Ecotoxicol Environ Saf 2019; 180:53-62. [PMID: 31071648 DOI: 10.1016/j.ecoenv.2019.04.082] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 04/11/2019] [Accepted: 04/27/2019] [Indexed: 06/09/2023]
Abstract
The increasing human presence in the Arctic shelf seas, with the expansion of oil and gas industries and maritime shipping, poses a risk for Arctic marine organisms such as the key species polar cod (Boreogadus saida). The impact of dietary crude oil on growth and metabolism of polar cod was investigated in the early spring (March-April) when individuals are expected to be in a vulnerable physiological state with poor energy stores. Adult polar cod were exposed dietarily to three doses of Kobbe crude oil during an eight weeks period and followed by two weeks of depuration. Significant dose-responses in exposure biomarkers (hepatic ethoxyresorufine-O-deethylase [EROD] activity and 1-OH phenanthrene metabolites in bile) indicated that polycyclic aromatic hydrocarbons (PAHs) were bioavailable. Condition indices (i.e. Fulton's condition factor, hepatosomatic index), growth, whole body respiration, and total lipid content in the liver were monitored over the course of the experiment. The majority of females were immature, while a few had spawned during the season and showed low hepatic lipid content during the experiment. In contrast, males were all, except for one immature individual, in a post-spawning stage and had larger hepatic energy stores than females. Most specimens, independent of sex, showed a loss in weight, that was exacerbated by exposure to crude oil and low hepatic liver lipids. Furthermore, females exposed to crude oil showed a significant elevation of oxygen consumption compared to controls, although not dose-dependent. This study highlights the importance of the energy status of individuals for their response to a crude oil exposure.
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Affiliation(s)
- Jasmine Nahrgang
- Department of Arctic and Marine Biology, University of Tromsø, 9037, Tromsø, Norway.
| | - Morgan L Bender
- Department of Arctic and Marine Biology, University of Tromsø, 9037, Tromsø, Norway
| | | | - Jordan Nechev
- Department of Arctic and Marine Biology, University of Tromsø, 9037, Tromsø, Norway
| | - Jørgen Berge
- Department of Arctic and Marine Biology, University of Tromsø, 9037, Tromsø, Norway; University Centre in Svalbard, 9171, Longyearbyen, Norway; Centre for Autonomous Underwater Operations, Norwegian University for Science and Technology, 7491, Trondheim, Norway
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Beirão J, Baillon L, Litt MA, Langlois VS, Purchase CF. Impact of crude oil and the dispersant Corexit™ EC9500A on capelin (Mallotus villosus) embryo development. Mar Environ Res 2019; 147:90-100. [PMID: 31023559 DOI: 10.1016/j.marenvres.2019.04.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 04/02/2019] [Accepted: 04/08/2019] [Indexed: 06/09/2023]
Abstract
Marine food webs are particularly vulnerable to oil spills if keystone species are impacted. To quantify lethal and sublethal toxicity in a key Holarctic forage fish, capelin embryos were exposed to Hibernia crude oil water accommodated fraction (WAF) produced at an oil-to-water ratio of 1:9 (v:v) and chemically-enhanced WAF (CEWAF) produced with the dispersant Corexit™ EC9500A at a dispersant-to-oil ratio of 1:10 (CEWAF H) or 1:50 (CEWAF L). Corexit alone yielded similar embryotoxicity to CEWAF. 10% CEWAF H, with total polycyclic aromatic hydrocarbons of 99.2 μg/L, decreased embryo survival following 10 h of exposure, while continual exposed to 1% CEWAF L decreased hatching and heart rates. Concentrations down to 0.1% CEWAF L increased in a dose-dependent manner the transcript level of cytochrome P4501a1 (cyp1a1) in hatched larvae. These data indicate that embryo-larval survival of capelin is likely at risk if an oil spill coincides in space and time with spawning.
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Affiliation(s)
- José Beirão
- Fish Evolutionary Ecology Research Group, Biology Department, Memorial University of Newfoundland, St. John's, NL, A1B 3X9, Canada; Faculty of Biosciences and Aquaculture, Nord University, NO - 8049, Bodø, Norway.
| | - Lucie Baillon
- Institut national de la recherche scientifique (INRS), Centre Eau Terre Environnement, Quebec City, QC, G1K 9A9, Canada
| | - Margaret A Litt
- Fish Evolutionary Ecology Research Group, Biology Department, Memorial University of Newfoundland, St. John's, NL, A1B 3X9, Canada
| | - Valérie S Langlois
- Institut national de la recherche scientifique (INRS), Centre Eau Terre Environnement, Quebec City, QC, G1K 9A9, Canada
| | - Craig F Purchase
- Fish Evolutionary Ecology Research Group, Biology Department, Memorial University of Newfoundland, St. John's, NL, A1B 3X9, Canada
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Tian X, Shen Z, Han Z, Zhou Y. The effect of extracellular polymeric substances on exogenous highly toxic compounds in biological wastewater treatment: An overview. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.biteb.2018.11.009] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bautista NM, Pothini T, Meng K, Burggren WW. Behavioral consequences of dietary exposure to crude oil extracts in the Siamese fighting fish (Betta splendens). Aquat Toxicol 2019; 207:34-42. [PMID: 30513419 DOI: 10.1016/j.aquatox.2018.11.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 10/14/2018] [Accepted: 11/28/2018] [Indexed: 05/24/2023]
Abstract
Uptake by fishes of crude oil and its polycyclic aromatic hydrocarbons (PAHs) components occurs via gills, dietary intake, or diffusion through the skin. Dietary exposure to crude oil and its components is environmentally relevant, and induces physiological and morphological disruptions in fish. However, the impacts of crude oil on fish social and reproductive behaviors and thus the possible influences on reproductive success are poorly understood. As a part of their intraspecific interactions, male Siamese fighting fish (Betta splendens) exhibit highly stereotypic behavioral and territorial displays. This makes this species a tractable model for testing crude oil effects on behavior. After 2 weeks of acclimation at 29 °C, male adult betta fish were divided into three groups and fed for 4 weeks with food spiked with water (control), low oil concentrations or high oil concentrations (∑Total PAH concentrations 340, 3960 or 8820 ng/g dw, respectively) to determine subsequent alterations in behavioral displays. Compared with control fish, the aggressive display of "opercular flaring" was significantly increased (P < 0.03, n = 14-16) in oil-exposed fish. Bubble nest building, as well as testis and brain mass, were significantly reduced in treated fish (P < 0.05). Hematocrit of treated groups was increased significantly (P < 0.02) from 21% in control fish to ∼27% in both oil exposure groups. Dietary exposure over a 4-week period to low, relevant levels of crude oil thus leads to an increase in aggressive behavioral displays, a decrease in reproductive activity and additional morphological changes.
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Affiliation(s)
- Naim M Bautista
- Developmental Integrative Biology Research Group, Department of Biological Sciences, University of North Texas,1155 Union Circle #305220, Denton, TX, 76203-5017, USA.
| | - Tanushri Pothini
- Developmental Integrative Biology Research Group, Department of Biological Sciences, University of North Texas,1155 Union Circle #305220, Denton, TX, 76203-5017, USA
| | - Kelly Meng
- Developmental Integrative Biology Research Group, Department of Biological Sciences, University of North Texas,1155 Union Circle #305220, Denton, TX, 76203-5017, USA
| | - Warren W Burggren
- Developmental Integrative Biology Research Group, Department of Biological Sciences, University of North Texas,1155 Union Circle #305220, Denton, TX, 76203-5017, USA
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Dogra Y, Scarlett AG, Rowe D, Galloway TS, Rowland SJ. Predicted and measured acute toxicity and developmental abnormalities in zebrafish embryos produced by exposure to individual aromatic acids. Chemosphere 2018; 205:98-107. [PMID: 29689530 DOI: 10.1016/j.chemosphere.2018.04.079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 04/13/2018] [Accepted: 04/13/2018] [Indexed: 06/08/2023]
Abstract
Petroleum acids, often called 'Naphthenic Acids' (NA), enter the environment in complex mixtures from numerous sources. These include from Produced and Process-Affected waters discharged from some oil industry activities, and from the environmental weathering of spilled crude oil hydrocarbons. Here, we test the hypothesis that individual NA within the complex mixtures can induce developmental abnormalities in fish, by screening a range of individual acids, with known chemical structures. Sixteen aromatic NA were tested using a Thamnocephalus platyrus (beavertail fairyshrimp) assay, to establish acute toxicity. Toxicities ranged from 568 to 8 μM, with the methylbiphenyl acid, 4-(p-tolyl)benzoic acid, most toxic. Next, five of the most toxic monoacids and for comparison, a diacid, were assayed using Danio rerio (zebrafish) embryos to test for lethality and developmental abnormalities. The toxicities were also predicted using Admet predictor™ software. Exposure to the five monoacids produced deformities in zebrafish embryos in a dose-dependent manner. Thus, exposure to 4-(p-tolyl)benzoic acid produced abnormalities in >90% of the embryos at concentrations of <1 μM; exposure to dehydroabietic acid caused pericardial edema and stunted growth in 100% of the embryos at 6 μM and exposure to pyrene-1-carboxylic acid caused 80% of embryos to be affected at 3 μM. The findings of this preliminary study therefore suggest that some aromatic acids are targets for more detailed mechanistic studies of mode of action. The results should help to focus on those NA which may be important for monitoring in oil industry wastewaters and polluted environmental samples.
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Affiliation(s)
- Yuktee Dogra
- Biosciences, College of Life and Environmental Sciences, University of Exeter, Stocker Road, Exeter, EX4 4QD UK
| | - Alan G Scarlett
- Petroleum and Environmental Geochemistry Group, Biogeochemistry Research Centre, University of Plymouth, Drake Circus, Plymouth, PL4 8AA, UK.
| | - Darren Rowe
- Biosciences, College of Life and Environmental Sciences, University of Exeter, Stocker Road, Exeter, EX4 4QD UK
| | - Tamara S Galloway
- Biosciences, College of Life and Environmental Sciences, University of Exeter, Stocker Road, Exeter, EX4 4QD UK
| | - Steven J Rowland
- Petroleum and Environmental Geochemistry Group, Biogeochemistry Research Centre, University of Plymouth, Drake Circus, Plymouth, PL4 8AA, UK.
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