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Hu Y, Nie F, Zhang M, Song Q, Wei W, Lv G, Wei Y, Kang D, Chen Z, Lin H, Chen J. Developmental toxicity and mechanism of polychlorinated biphenyls 126 and nano-polystyrene combined exposure to zebrafish larvae. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 278:116419. [PMID: 38718726 DOI: 10.1016/j.ecoenv.2024.116419] [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: 01/06/2024] [Revised: 04/22/2024] [Accepted: 04/28/2024] [Indexed: 05/26/2024]
Abstract
3,3',4,4',5-Pentachlorobiphenyl (PCB126) is the most toxic congener of dioxin-like polychlorinated biphenyls (DL PCBs), while nanoplastics (NPs) have recently emerged as significant marine pollutants, both posing threats to aquatic organisms and human health. They coexist in the environment, but their comprehensive toxicological effects remain unclear. In this study, zebrafish embryos were simultaneously exposed to PCB126 and 80-nanometer nanoplastyrene (NPS). Researchers utilized fluorescence microscopy, qPCR, histopathological examination, and transcriptomic sequencing to investigate the developmental toxicity of different concentrations of PCB126 and NPS individually or in combination on zebrafish embryos and larvae. Results indicate that the chorion significantly impedes the accumulation of NPS (p < 0.05). It is noteworthy that this barrier effect diminishes upon simultaneous exposure to PCB126. In this experiment, the semi-lethal concentration of PCB126 for larvae was determined to be 6.33 μg/L. Exposure to PCB126 induces various deformities, primarily mediated through the aryl hydrocarbon receptor (AHR). Similarly, exposure to NPS also activates AHR, leading to developmental impairments. Furthermore, transcriptomic sequencing revealed similar effects of PCB126 and NPS on the gene expression trends in zebrafish larvae, but combined exposure to both exacerbates the risk of cancer and induces more severe cardiac toxicity. At this level, co-exposure to PCB126 and NPS adversely affects the development of zebrafish larvae. This study contributes to a deeper understanding of the in vivo accumulation of DL polychlorinated biphenyls and microplastics in actual aquatic environments and their impact on fish development.
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Affiliation(s)
- Yao Hu
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - Fanghong Nie
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - Min Zhang
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - Qinglang Song
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - Wan Wei
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - Guangzhou Lv
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - Yunli Wei
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - Danju Kang
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - Zhibao Chen
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - Hongying Lin
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, Guangdong, China
| | - Jinjun Chen
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, Guangdong, China.
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2
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Liu T, Zhang L. Multigenerational effects of arsenate on development and reproduction in marine copepod Tigriopus japonicus. CHEMOSPHERE 2023; 342:140158. [PMID: 37709060 DOI: 10.1016/j.chemosphere.2023.140158] [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: 06/09/2023] [Revised: 08/21/2023] [Accepted: 09/11/2023] [Indexed: 09/16/2023]
Abstract
Arsenic (As) is a persistent toxic substance, however, its toxicity to marine zooplankton remains unclear. In this study, copepods were exposed to a series of dissolved arsenate (As(V)) for four generations (F0-F3) and subsequently depurated in clean seawater for two generations (F4-F5) to assess multigenerational toxicity of As(V). As(V) exposure prolonged copepod development. The development time were 1.9, 2.4, and 3.4 days longer than the control in F0 when exposed to 50, 100, and 500 μg/L As(V), respectively, and the toxicity increased with generations. Moreover, As(V) reduced the reproductive capacity of copepods, and this effect become more severe during generation succession. The 10-day fecundities were reduced from 80 to 85 eggs per female in the control to 42 eggs per female, the lowest level, in 500 μg/L As(V) exposure group in F3. Nevertheless, the fecundity was recovered to the control level in the offspring of the 50 and 100 μg/L As(V) exposed groups (F4), suggesting it was an acclimation effect of copepods during As(V) exposure. In addition, the survival rate, development time, and reproductive parameters were significantly correlated with the As accumulation in copepods. Overall, As(V) exposure caused As bioaccumulation which negatively affected copepods' survival, development, and reproductive traits, and this toxic effect was amplified with generations and concentrations. Therefore, the multigenerational toxicity of As should be considered in the environmental risk assessments.
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Affiliation(s)
- Tianrui Liu
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Li Zhang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China; Sanya Institute of Ocean Eco-Environmental Engineering, Sanya, 572025, China.
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Camacho-Jiménez L, González-Ruiz R, Yepiz-Plascencia G. Persistent organic pollutants (POPs) in marine crustaceans: Bioaccumulation, physiological and cellular responses. MARINE ENVIRONMENTAL RESEARCH 2023; 192:106184. [PMID: 37769555 DOI: 10.1016/j.marenvres.2023.106184] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/23/2023] [Accepted: 09/15/2023] [Indexed: 10/03/2023]
Abstract
Persistent organic pollutants (POPs) are ubiquitous in marine ecosystems. These compounds can be accumulated in water, sediments and organisms, persist in time, and have toxic effects in human and wildlife. POPs can be uptaken and bioaccumulated by crustaceans, affecting different physiological processes, including energy metabolism, immunity, osmoregulation, excretion, growth, and reproduction. Nonetheless, animals have evolved sub-cellular mechanisms for detoxification and protection from chemical stress. POPs induce the activity of enzymes involved in xenobiotic metabolism and antioxidant systems, that in vertebrates are importantly regulated at gene expression (transcriptional) level. However, the activation and control of these enzyme systems upon the exposure to POPs have been scarcely studied in invertebrate species, including crustaceans. Herein, we summarize various aspects of the bioaccumulation of POPs in marine crustaceans and their physiological effects. We specially focus on the regulation of xenobiotics metabolism and antioxidant enzymes as key sub-cellular mechanisms for detoxification and protection from chemical stress.
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Affiliation(s)
- Laura Camacho-Jiménez
- Centro de Investigación en Alimentación y Desarrollo A.C. (CIAD, A.C.), Carretera Gustavo Enrique Astiazarán Rosas 46, Hermosillo, Sonora, 83304, Mexico.
| | - Ricardo González-Ruiz
- Instituto Potosino de Investigación Científica y Tecnológica A.C. (IPICYT A.C.), Camino a La Presa de San José 2055, San Luis Potosí, San Luis Potosí, 78216, Mexico
| | - Gloria Yepiz-Plascencia
- Centro de Investigación en Alimentación y Desarrollo A.C. (CIAD, A.C.), Carretera Gustavo Enrique Astiazarán Rosas 46, Hermosillo, Sonora, 83304, Mexico
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Wei H, Qian J, Xie ZX, Lin L, Wang DZ, Wang MH. Diel Fluctuation Superimposed on Steady High pCO 2 Generates the Most Serious Cadmium Toxicity to Marine Copepods. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:13179-13188. [PMID: 36044019 DOI: 10.1021/acs.est.2c02677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Coastal systems experience diel fluctuation of pCO2 and cadmium (Cd) pollution; nevertheless, the effect of fluctuating pCO2 on Cd biotoxicity is poorly known. In this study, we initially performed the isotopically enriched organism bioassay to label Tigriopus japonicus with 113Cd (5 μg/L) to determine the Cd accumulation rate constant (kaccu) under ambient (400 μatm) and steadily (1000 μatm) and fluctuatingly elevated (1000 ± 600 μatm) pCO2 conditions for 48 h. Next, T. japonicus was interactively subjected to the above pCO2 exposures at Cd (control, 5, and 500 μg/L) treatments for 7 d. Biochemical and physiological responses for copepods were analyzed. The results showed that steadily increased pCO2 facilitated Cd bioaccumulation compared to ambient pCO2, and it was more under fluctuating acidification conditions. Despite compensatory reactions (e.g., increased energy production), Cd ultimately induced oxidative damage and apoptosis. Meanwhile, combined treatment exhibited higher toxicity (e.g., increased apoptosis) relative to Cd exposure, and even more if fluctuating acidification was considered. Intriguingly, fluctuating acidification inhibited Cd exclusion in Cd-treated copepods compared to steady acidification, linking to higher Cd kaccu and bioaccumulation. Collectively, CO2-driven acidification could aggravate Cd toxicity, providing a mechanistic understanding of the interaction between seawater acidification and Cd pollution in marine copepods.
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Affiliation(s)
- Hui Wei
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems/College of the Environment & Ecology, Xiamen University, Xiamen361102, China
| | - Jing Qian
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems/College of the Environment & Ecology, Xiamen University, Xiamen361102, China
| | - Zhang-Xian Xie
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems/College of the Environment & Ecology, Xiamen University, Xiamen361102, China
| | - Lin Lin
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems/College of the Environment & Ecology, Xiamen University, Xiamen361102, China
| | - Da-Zhi Wang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems/College of the Environment & Ecology, Xiamen University, Xiamen361102, China
| | - Ming-Hua Wang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems/College of the Environment & Ecology, Xiamen University, Xiamen361102, China
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Chen Y, Dong W. Predicted Near-Future Oceanic Warming Enhances Mercury Toxicity in Marine Copepods. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2022; 108:824-829. [PMID: 34596732 DOI: 10.1007/s00128-021-03385-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 09/23/2021] [Indexed: 06/13/2023]
Abstract
The effects of acute mercury exposure (118 µg/L) on the marine copepod Tigriopus japonicus were examined at 22 and 25 °C for 24 h and compared with controls. Mercury accumulation and seven genes related to antioxidant/stress responses were analyzed after exposure. The 24-h LC50 value decreased in the warmer environment and mercury accumulation was elevated. Under both temperatures, mercury significantly affected the expression of all analyzed genes and probably caused oxidative stress. Intriguingly, at the same mercury concentration, most genes were upregulated at the higher relative to the lower temperature, and the copepods likely initiated more compensatory reactions to counteract increased mercury toxicity associated with the warmer temperature. Overall, this study suggests a molecular mechanism by which marine copepods could respond to future oceanic warming and mercury pollution.
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Affiliation(s)
- Yao Chen
- Xiamen Marine Environmental Monitoring Central Station (SOA), 361008, Xiamen, China.
| | - Weifeng Dong
- Xiamen Marine Environmental Monitoring Central Station (SOA), 361008, Xiamen, China
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6
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Wei H, Bai Z, Xie D, Chen Y, Wang M. CO 2-driven seawater acidification increases cadmium toxicity in a marine copepod. MARINE POLLUTION BULLETIN 2021; 173:113145. [PMID: 34800761 DOI: 10.1016/j.marpolbul.2021.113145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 11/05/2021] [Accepted: 11/10/2021] [Indexed: 06/13/2023]
Abstract
Here, we examined the 48-h acute toxicity of cadmium (Cd) in the marine copepod Tigriopus japonicus under two pCO2 concentrations (400 and 1000 μatm). Subsequently, T. japonicus was interactively exposed to different pCO2 (400, 1000 μatm) and Cd (control, 500 μg/L) treatments for 48 h. After exposure, biochemical and physiological responses were analyzed for the copepods. The results showed that the 48-h LC50 values of Cd were calculated as 12.03 mg/L and 9.08 mg/L in T. japonicus, respectively, under 400 and 1000 μatm pCO2 conditions. Cd exposure significantly promoted Cd exclusion/glycolysis, detoxification/stress response, and oxidative stress/apoptosis while it depressed that of antioxidant capacity. Intriguingly, CO2-driven acidification enhanced Cd bioaccumulation and its toxicity in T. japonicus. Overall, our study provides a mechanistic understanding about the interaction between seawater acidification and Cd pollution in marine copepods.
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Affiliation(s)
- Hui Wei
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems/College of the Environment & Ecology, Xiamen University, Xiamen 361102, China
| | - Zhuoan Bai
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems/College of the Environment & Ecology, Xiamen University, Xiamen 361102, China
| | - Dongmei Xie
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems/College of the Environment & Ecology, Xiamen University, Xiamen 361102, China
| | - Yao Chen
- Xiamen Marine Environmental Monitoring Central Station (SOA), Xiamen 361008, China.
| | - Minghua Wang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems/College of the Environment & Ecology, Xiamen University, Xiamen 361102, China.
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7
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Liu M, Sun Y, Tang L, Hu C, Sun B, Huang Z, Chen L. Fingerprinting fecal DNA and mRNA as a non-invasive strategy to assess the impact of polychlorinated biphenyl 126 exposure on zebrafish. J Environ Sci (China) 2021; 106:15-25. [PMID: 34210431 DOI: 10.1016/j.jes.2021.01.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 01/13/2021] [Accepted: 01/13/2021] [Indexed: 06/13/2023]
Abstract
In toxicological studies, experimental animals are generally subjected to dissection to obtain the tissues of concern, which causes great harm to the animals. In this regard, it is necessary to test and develop a non-invasive strategy to prevent the animals from anthropic injury when achieving scientific objectives. Therefore, zebrafish fecal DNA and mRNA pools were assessed by using metagenomic and transcriptomic analyses based on their potential to diagnose toxicological impairment of polychlorinated biphenyl (PCB) 126, a model persistent organic pollutant. The results showed that there was abundant zebrafish DNA and mRNA in the feces, which were, however, associated with contrasting profiles of physiological activities. As compared to DNA fragments, fecal mRNA provided a better representation of zebrafish physiological status. PCB126 exposure dramatically shifted the composition of fecal zebrafish DNA and mRNA as a function of sex. The differential mRNA caused by PCB126 clearly identified the toxicological fingerprint of PCB126. In summary, this study provides preliminary clues about the potential of fecal genes (mRNA in particular) in the development of non-invasive toxicological approaches. In the future, it is expected that more works will be conducted to screen sensitive diagnostic biomarkers from feces to increase the rate and reduce the cost of ecological risk assessment.
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Affiliation(s)
- Mengyuan Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yumiao Sun
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lizhu Tang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chenyan Hu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430072, China
| | - Baili Sun
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zileng Huang
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430072, China
| | - Lianguo Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
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Hu C, Liu M, Wan T, Tang L, Sun B, Zhou B, Lam JCW, Lam PKS, Chen L. Disturbances in Microbial and Metabolic Communication across the Gut-Liver Axis Induced by a Dioxin-like Pollutant: An Integrated Metagenomics and Metabolomics Analysis. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:529-537. [PMID: 33356191 DOI: 10.1021/acs.est.0c06884] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
To determine how the aryl hydrocarbon receptor (AhR) signaling acts along the gut-liver axis, we employed an integrated metagenomic and metabolomic approach to comprehensively profile the microbial and metabolic networks. Adult zebrafish were exposed to a model agonist of the AhR: polychlorinated biphenyl (PCB) 126. The metagenomic analysis showed that PCB126 suppressed microbial activities related to primary bile acid metabolism in male intestines. Accordingly, a suite of primary bile acids consistently showed higher concentrations, suggesting that bacterial conversion of primary bile acids was blocked. PCB126 also disturbed bacterial metabolism of bile acids in female intestines, as revealed by higher concentrations of primary bile acids (e.g., chenodeoxycholic acid) and activation of the nuclear farnesoid X receptor signaling. In addition, PCB126 exposure impaired the metabolism of various essential vitamins (e.g., retinol, vitamin B6, and folate). Degradation of vitamin B6 by bacterial enzymes was inhibited in male intestines, resulting in its intestinal accumulation. However, PCB126 suppressed the bacterial metabolism of vitamins in female intestines, causing systematic deficiency of essential vitamins. Overall, we found that PCB126 exposure dysregulated gut microbial activities, consequently interrupting bile acid and vitamin metabolism along the gut-liver axis. The findings provided an insight of the AhR action in microbe-host metabolic communication related to PCBs.
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Affiliation(s)
- Chenyan Hu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430072, China
| | - Mengyuan Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Teng Wan
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Kowloon 999077, Hong Kong SAR, China
| | - Lizhu Tang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Baili Sun
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bingsheng Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - James C W Lam
- Department of Science and Environmental Studies, The Education University of Hong Kong, Hong Kong SAR, China
| | - Paul K S Lam
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Kowloon 999077, Hong Kong SAR, China
| | - Lianguo Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
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Wu Q, Du Y, Huang Z, Gu J, Leung JYS, Mai B, Xiao T, Liu W, Fu J. Vertical profile of soil/sediment pollution and microbial community change by e-waste recycling operation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 669:1001-1010. [PMID: 30970449 DOI: 10.1016/j.scitotenv.2019.03.178] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 03/12/2019] [Accepted: 03/13/2019] [Indexed: 06/09/2023]
Abstract
The present study aims to assess the effect of electronic waste (e-waste) recycling on microbial community and the underlying modulation mechanism. Core soil/sediment samples were collected from an abandoned e-waste burning site and neighboring farmland/stream sites in Guiyu, China. High concentrations and health risks of toxic heavy metals, particularly, Sb and Sn, and halogenated flame retardants (HFRs), including decabromodiphenyl ether (BDE 209) and decabromodiphenyl ethane (DBDPE) were mostly retained at the top surface layers of soils/sediments (0-30cm) after more than one year of natural vertical diffusion and microbe-facilitated biodegradation. Heavy metals, such as Ag, Cd, Cu, Pb, Sb, and Sn, played a critical role for the reduction of microbial diversity. This is the first study reporting the open burning of e-waste caused an obvious heat effect and enriched thermophilic/mesophilic microbes in local area. The acid washing during e-waste recycling process may result in the enrichment of acidophilic microbes. This investigation showed that e-waste processing operation resulted in not only severe pollution of the soils/sediments by various pollutants, but also reduction of microbial diversity that was difficult to self-store by the local ecosystem.
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Affiliation(s)
- Qihang Wu
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou 510006, China
| | - Yongming Du
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou 510006, China; Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Zhuying Huang
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou 510006, China; Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Jidong Gu
- Laboratory of Environmental Microbiology and Toxicology, School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, SAR, China
| | - Jonathan Y S Leung
- School of Biological Sciences, The University of Adelaide, Adelaide, South Australia, Australia
| | - Bixian Mai
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
| | - Tangfu Xiao
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou 510006, China; Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Wen Liu
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Science and Engineering, Peking University, Beijing 100871, China
| | - Jie Fu
- Department of Environmental Science & Engineering, Fudan University, Shanghai 200438, China.
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10
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Wei J, Shen Q, Ban Y, Wang Y, Shen C, Wang T, Zhao W, Xie X. Characterization of Acute and Chronic Toxicity of DBP to Daphnia magna. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2018; 101:214-221. [PMID: 29980811 DOI: 10.1007/s00128-018-2391-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Accepted: 06/28/2018] [Indexed: 06/08/2023]
Abstract
As a commonly used phthalate compound, di(n-butyl) phthalate (DBP) is an emerging group of polyvinyl chloride plasticizers. The acute toxicity of DBP has been extensively studied using the aquatic indicator organism, Daphnia magna. However, little is known about chronic and transgenerational toxicity of DBP. In this study, acute LC50 values were 3.04 mg/L (24 h) and 2.55 mg/L (48 h). Chronic toxicity tests in the case of maternal exposure to DBP revealed that DBP had negligible effects on growth and reproduction of F3 generation of D. magna, although the growth rate of body length and the intrinsic rate of increase were prominently reduced, to a pretty small extent. At specific concentrations, DBP generated beneficial effects on the parental generation of D. magna and no obvious impacts on the F1 generation. This study showed that maternal exposure to DBP did not cause any transgenerational effects on D. magna.
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Affiliation(s)
- Jie Wei
- Key Laboratory of Hydrobiology in Liaoning Province, College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, People's Republic of China
| | - Qi Shen
- Key Laboratory of Hydrobiology in Liaoning Province, College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, People's Republic of China
| | - Yanli Ban
- Key Laboratory of Hydrobiology in Liaoning Province, College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, People's Republic of China
| | - Yuan Wang
- Key Laboratory of Hydrobiology in Liaoning Province, College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, People's Republic of China
| | - Chenchen Shen
- Key Laboratory of Hydrobiology in Liaoning Province, College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, People's Republic of China
| | - Tianyi Wang
- Key Laboratory of Hydrobiology in Liaoning Province, College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, People's Republic of China
| | - Wen Zhao
- Key Laboratory of Hydrobiology in Liaoning Province, College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, People's Republic of China.
| | - Xi Xie
- Liaoning Ocean and Fisheries Science Research Institute, Dalian, 116023, People's Republic of China.
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Zhang Q, Wang X, Zhu J, Li Z, Wang Y. Occurrence and risk assessment of persistent organic pollutants in a branch of the Grand Canal in Hangzhou, China. ENVIRONMENTAL MONITORING AND ASSESSMENT 2018; 190:211. [PMID: 29532177 DOI: 10.1007/s10661-018-6572-z] [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: 11/22/2017] [Accepted: 02/20/2018] [Indexed: 05/25/2023]
Abstract
The Grand Canal is one of the most important waterways and sources of drinking water in China. The security of this water environment has a strong influence on national economic development and public health. However, data on the pollution status and potential risks due to persistent organic pollutants (POPs) in this area is insufficient. In this study, we selected a branch of the Grand Canal in Hangzhou as the study subject from which 16 surface water samples were collected in the summer of 2016. The concentrations of organochlorine pesticides (OCPs) (including 4 hexachlorocyclohexanes (HCHs) and 6 dichlorodiphenyltrichloroethanes (DDTs)), 12 polycyclic aromatic hydrocarbons (PAHs), and 35 polychlorinated biphenyls (PCBs) in the water samples were determined by gas chromatography-mass spectrometry (GC-MS). Non-carcinogenic risk, carcinogenic risk, and cytotoxicity experiments were conducted to evaluate the potential health risks due to these POPs. Additionally, the toxicological data for the Danio rerio aquatic organism from the US EPA were employed for comparison with the residue from POPs in this area. The results showed that the total concentrations of HCHs, DDTs, PCBs, and PAHs were 29.937, 60.2, 8.30, and 1670.2 ng/L, respectively. Some pollutants (including acenaphthene and acenaphthylene, hepta-PCBs and tetra-PCBs, octa-PCBs and hexa-PCBs, β-HCH and α-HCH, and δ-HCH and γ-HCH) showed a correlation, which indicated they might have a similar origin. There were no non-carcinogenic risks or ecological risks for adults, children, and aquatic organisms, but a relatively low carcinogenic risk for adults presented at certain sites. The data provided here will be helpful in fully understanding the pollution status of the surface water in this branch of the Grand Canal and the potential risks from this water. Graphical abstract ᅟ.
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Affiliation(s)
- Quan Zhang
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang, 310032, China.
| | - Ximing Wang
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang, 310032, China
| | - Jianqiang Zhu
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang, 310032, China
| | - Zhe Li
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang, 310032, China
| | - Ye Wang
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang, 310032, China
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12
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Chen L, Li X, Hong H, Shi D. Multigenerational effects of 4-methylbenzylidene camphor (4-MBC) on the survival, development and reproduction of the marine copepod Tigriopus japonicus. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2018; 194:94-102. [PMID: 29172130 DOI: 10.1016/j.aquatox.2017.11.008] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 11/13/2017] [Accepted: 11/15/2017] [Indexed: 06/07/2023]
Abstract
One of the most widely used organic UV filters, 4-methylbenzylidene camphor (4-MBC), is present at high concentrations in offshore waters. The marine copepod Tigriopus japonicus was exposed to different concentrations of 4-MBC (i.e., 0, 0.5, 1, 5 and 10μgL-1) for 4 consecutive generations (F0-F3) to evaluate the impact of 4-MBC on marine ecosystems. The results showed that in the F0 generation, 4-MBC caused significant lethal toxicity in T. japonicas at concentrations of 5 and 10μgL-1 and the nauplii were more sensitive to 4-MBC toxicity than the adults. However in the F1-F3 generations, 4-MBC exposure did not affect the survival rate. The hatching rate and the developmental duration from the nauplii to the copepodite (N-C) and from the nauplii to adult (N-A) decreased significantly in the F1-F2 generations and in the F2-F3 generations, respectively, even at the lowest exposure concentration (0.5μgL-1). In the subsequent two generations (i.e., the F4-F5 generations) of recovery exposure in clean seawater, the growth rates of the original 4-MBC exposure groups were still faster than the control in both the N-C and N-A stages, suggesting possible transgenerational genetic and/or epigenetic changes upon chronic 4-MBC exposure. The expression of the ecdysone receptor gene was up-regulated by 4-MBC, which was consistent with the decrease of the N-C/N-A duration. In addition, 4-MBC may induce oxidative stress and trigger apoptosis in T. japonicas, resulting in developmental, reproductive and even lethal toxicity. A preliminary risk assessment suggested that under environmentally realistic concentrations, 4-MBC had significant potential to pose a threat to marine crustaceans and marine ecosystems.
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Affiliation(s)
- Leyun Chen
- State Key Laboratory of Marine Environmental Science and College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Xiaolin Li
- State Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Haizheng Hong
- State Key Laboratory of Marine Environmental Science and College of the Environment and Ecology, Xiamen University, Xiamen 361102, China; Center for Marine Environmental Chemistry and Toxicology, Xiamen University, Xiamen 361102, China.
| | - Dalin Shi
- State Key Laboratory of Marine Environmental Science and College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
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Biandolino F, Parlapiano I, Faraponova O, Prato E. Effects of short- and long-term exposures to copper on lethal and reproductive endpoints of the harpacticoid copepod Tigriopus fulvus. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 147:327-333. [PMID: 28858705 DOI: 10.1016/j.ecoenv.2017.08.041] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 07/24/2017] [Accepted: 08/17/2017] [Indexed: 06/07/2023]
Abstract
The long-term exposure provides a realistic measurement of the effects of toxicants on aquatic organisms. The harpacticoid copepod Tigriopus fulvus has a wide geographical distribution and is considered as an ideal model organism for ecotoxicological studies for its good sensitivity to different toxicants. In this study, acute, sub-chronic and chronic toxicity tests based on lethal and reproductive responses of Tigriopus fulvus to copper were performed. The number of moults during larval development was chosen as an endpoint for sub-chronic test. Sex ratio, inhibitory effect on larval development, hatching time, fecundity, brood number, nauplii/brood, total newborn production, etc, were calculated in the chronic test (28d). Lethal effect of copper to nauplii showed the LC50-48h of 310 ± 72µgCu/L (mean ± sd). It was observed a significant inhibition of larval development at sublethal copper concentrations, after 4 and 7 d. After 4d, the EC50 value obtained for the endpoint in "moult naupliar reduction" was of 55.8 ± 2.5µgCu/L (mean ± sd). The EC50 for the inhibition of naupliar development into copepodite stage, was of 21.7 ± 4.4µgCu/L (mean ± sd), after 7 days. Among the different traits tested, copper did not affect sex ratio and growth, while fecundity and total nauplii production were the most sensitive endpoints. The reproductive endpoints offer the advantage of being detectable at very low pollutant concentrations.
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Affiliation(s)
| | | | - Olga Faraponova
- ISPRA - Institute for Environmental Protection and Research, Rome, Italy
| | - Ermelinda Prato
- CNR-IAMC, Institute for Coastal Marine Environment, Taranto, Italy
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Gong WJ, Zhu LY, Jiang TT, Han C. The occurrence and spatial-temporal distribution of tetrabromobisphenol A in the coastal intertidal zone of Qingdao in China, with a focus on toxicity assessment by biological monitoring. CHEMOSPHERE 2017; 185:462-467. [PMID: 28715756 DOI: 10.1016/j.chemosphere.2017.07.033] [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: 12/25/2016] [Revised: 06/29/2017] [Accepted: 07/08/2017] [Indexed: 06/07/2023]
Abstract
Tetrabromobisphenol A (TBBPA) is a widely used flame retardant that has increasingly been found as contaminant in aquatic environments. The main goal of this study was to evaluate the pollution level of TBBPA at six locations around Qingdao and assess its biotoxicity through a two-generation toxicity study looking at a copepod species. In the chemical monitoring, the concentration of TBBPA in seawater samples ranged from nd to 1.8 μg/L. Next, the biological indicator monitoring used 1.8 μg/L as the middle exposure concentration to perform quantitative evaluations of the influence of TBBPA on the demographic traits of Pseudodiaptomus inopinus. The results showed that copepods became more sensitive to TBBPA exposure even in environmental concentration (1.8 μg/L) as the generations developed. The detrimental effects of TBBPA further increased naupliar mortality and impaired copepodite development to adulthood. This study demonstrated that the water pollution condition of TBBPA was measured at all 6 sampling locations of Qingdao. Therefore, the present results call for a decreased discharge of TBBPA into the marine environment to avoid impairing copepod reproduction and development.
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Affiliation(s)
- Wen-Jing Gong
- Institute of Forensic Medicine and Laboratory Medicine, Jining Medical University, Jining, Shandong, China; Laboratory for Plankton, College of Marine Life Sciences, Ocean University of China, Qingdao, Shandong, China
| | - Li-Yan Zhu
- Laboratory for Plankton, College of Marine Life Sciences, Ocean University of China, Qingdao, Shandong, China.
| | - Tian-Tian Jiang
- Laboratory for Plankton, College of Marine Life Sciences, Ocean University of China, Qingdao, Shandong, China
| | - Cui Han
- Laboratory for Plankton, College of Marine Life Sciences, Ocean University of China, Qingdao, Shandong, China
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15
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Park JC, Han J, Lee MC, Seo JS, Lee JS. Effects of triclosan (TCS) on fecundity, the antioxidant system, and oxidative stress-mediated gene expression in the copepod Tigriopus japonicus. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2017; 189:16-24. [PMID: 28575748 DOI: 10.1016/j.aquatox.2017.05.012] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 05/24/2017] [Accepted: 05/25/2017] [Indexed: 06/07/2023]
Abstract
Triclosan (TCS) is an antimicrobial agent that has been widely dispersed and detected in the marine environment. However, the effects of TCS in marine invertebrates are poorly understood. In this study, the effects of TCS on life cycle history (e.g. mortality and fecundity) along with cellular reactive oxygen species (ROS) levels, GSH content, antioxidant enzymatic activities, and mRNA expression levels of oxidative stress-mediated genes were measured in the copepod Tigriopus japonicus. The no observed effect concentration (NOEC) and median lethal concentration (LC50) of TCS in the adult stage were determined to be 300μg/L and 437.476μg/L, respectively, while in the nauplius stages the corresponding values were 20μg/L, and 51.76μg/L, respectively. Fecundity was significantly reduced (P<0.05) in response to TCS at 100μg/L. Concentration- and time-dependent analysis of ROS, GSH content (%), and antioxidant enzymatic activities (e.g. GST, GPx, and SOD) were significantly increased (P<0.05) in response to TCS exposure. Additionally, mRNA expression of detoxification (e.g., CYPs) and antioxidant (e.g., glutathione S-transferase-sigma isoforms, Cu/Zn superoxide dismutase, catalase) genes was modulated in response to TCS exposure at different concentrations over a 24h period. Our results revealed that TCS can induce reduced fecundity and oxidative stress with transcriptional regulation of oxidative stress-mediated genes with activation of the antioxidant system in the copepod T. japonicus.
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Affiliation(s)
- Jun Chul Park
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon 16419, South Korea
| | - Jeonghoon Han
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon 16419, South Korea
| | - Min-Chul Lee
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon 16419, South Korea
| | - Jung Soo Seo
- Pathology Division, National Institute of Fisheries Science, Busan 46083, South Korea
| | - Jae-Seong Lee
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon 16419, South Korea.
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16
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Hong H, Lv D, Liu W, Huang L, Chen L, Shen R, Shi D. Toxicity and bioaccumulation of three hexabromocyclododecane diastereoisomers in the marine copepod Tigriopus japonicas. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2017; 188:1-9. [PMID: 28437657 DOI: 10.1016/j.aquatox.2017.04.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 04/12/2017] [Accepted: 04/14/2017] [Indexed: 06/07/2023]
Abstract
The three major hexabromocyclododecane (HBCD) diastereoisomers, i.e. α-, β- and γ-HBCD, have distinct physical and chemical properties that may potentially result in different levels of bioaccumulation and toxicity in aquatic organisms. To assess the impact of diastereomeric variation in HBCDs, the marine copepod Tigriopus japonicus was exposed to α-, β- and γ-HBCD in isolation. Results showed that all the three diastereoisomers had a similar potency to cause growth delay in T. japonicas. Variation was observed in the overall survival rate with exposure to α- and β-HBCD, and this resulted in significantly higher lethal toxicity in T. japonicas than that with exposure to γ-HBCD. Exposure to α-, β- and γ-HBCD led to the generation of ROS in T. japonicas, a possibly toxic mechanism. Both α- and β-HBCD showed a higher potential to induce oxidative stress, which may be a factor in the higher lethal toxicity observed with α- and β-HBCD exposure. It is of note that T. japonicus was found to be more sensitive to all three diastereoisomers in the F1 generation than in the F0 generation. The bioconcentration potential of HBCD diastereoisomers can be ranked in the order α-HBCD>γ-HBCD>β-HBCD and was found to be higher in T. japonicus than has been reported for fish species.
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Affiliation(s)
- Haizheng Hong
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen 361102, China; Center for Marine Environmental Chemistry and Toxicology, Xiamen University, Xiamen 361102, China.
| | - Dongmei Lv
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China
| | - Wanxin Liu
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China
| | - Lingming Huang
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China
| | - Leyun Chen
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China
| | - Rong Shen
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China
| | - Dalin Shi
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen 361102, China
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17
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Li Y, Wang WX, Wang M. Alleviation of mercury toxicity to a marine copepod under multigenerational exposure by ocean acidification. Sci Rep 2017; 7:324. [PMID: 28336926 PMCID: PMC5428531 DOI: 10.1038/s41598-017-00423-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Accepted: 02/23/2017] [Indexed: 01/06/2023] Open
Abstract
Ocean acidification (OA) may potentially modify the responses of aquatic organisms to other environmental stressors including metals. In this study, we investigated the effects of near-future OA (pCO2 1000 μatm) and mercury (Hg) on the development and reproduction of marine copepod Tigriopus japonicus under multigenerational life-cycle exposure. Metal accumulation as well as seven life history traits (survival rate, sex ratio, developmental time from nauplius to copepodite, developmental time from nauplius to adult, number of clutches, number of nauplii/clutch and fecundity) was quantified for each generation. Hg exposure alone evidently suppressed the number of nauplii/clutch, whereas single OA exposure negligibly affected the seven traits of copepods. However, OA exposure significantly alleviated the Hg inhibitory effects on number of nauplii/clutch and fecundity, which could be explained by the reduced Hg accumulation under OA. Such combined exposure also significantly shortened the development time. Thus, in contrast to earlier findings for other toxic metals, this study demonstrated that OA potentially mitigated the Hg toxicity to some important life traits in marine copepods during multigenerational exposure.
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Affiliation(s)
- Yan Li
- Center for Marine Environmental Chemistry and Toxicology, College of the Environment & Ecology, Xiamen University, Xiamen, 361102, China
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen, 361102, China
| | - Wen-Xiong Wang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen, 361102, China
- Division of Life Science, The Hong Kong University of Science and Technology (HKUST), Clearwater Bay, Kowloon, Hong Kong
| | - Minghua Wang
- Center for Marine Environmental Chemistry and Toxicology, College of the Environment & Ecology, Xiamen University, Xiamen, 361102, China.
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen, 361102, China.
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18
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Legrand E, Boulangé-Lecomte C, Restoux G, Trémolet G, Duflot A, Forget-Leray J. Individual and mixture acute toxicity of model pesticides chlordecone and pyriproxyfen in the estuarine copepod Eurytemora affinis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:5976-5984. [PMID: 28032285 DOI: 10.1007/s11356-016-8294-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 12/19/2016] [Indexed: 06/06/2023]
Abstract
Due to the increase in the use of phytosanitary products during the last few decades, the importance to study the effect of pesticide mixtures has been established. In this study, we investigated the acute toxicity of two model insecticides, chlordecone (CLD) and pyriproxyfen (PXF), alone and in mixtures, in the estuarine copepod Eurytemora affinis. After 48 h of exposure, the relative LC50 were 73.24 and 131.61 μg/L for PXF and CLD, respectively. The lower concentration tested (10 μg/L) did not affect the mortality of E. affinis whatever the considered chemical compound. To understand the interaction between compounds in mixture, the results were fitted to the concentration addition, Vølund, and Hewlett models. The best fit was obtained with the Hewlett model, suggesting a synergistic effect of the mixture.
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Affiliation(s)
- Elena Legrand
- Normandie Univ, ULHN, UMR-I 02 SEBIO, FR CNRS 3730 SCALE BP 1123, F-76063, Le Havre, France
| | | | - Gwendal Restoux
- INRA/AgroParisTech, UMR 1313 Génétique Animale et Biologie Intégrative, Domaine de Vilvert, 78352, Jouy-en-josas cedex, France
| | - Gauthier Trémolet
- Normandie Univ, ULHN, UMR-I 02 SEBIO, FR CNRS 3730 SCALE BP 1123, F-76063, Le Havre, France
| | - Aurélie Duflot
- Normandie Univ, ULHN, UMR-I 02 SEBIO, FR CNRS 3730 SCALE BP 1123, F-76063, Le Havre, France
| | - Joëlle Forget-Leray
- Normandie Univ, ULHN, UMR-I 02 SEBIO, FR CNRS 3730 SCALE BP 1123, F-76063, Le Havre, France.
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Shi D, Lv D, Liu W, Shen R, Li D, Hong H. Accumulation and developmental toxicity of hexabromocyclododecanes (HBCDs) on the marine copepod Tigriopus japonicus. CHEMOSPHERE 2017; 167:155-162. [PMID: 27718427 DOI: 10.1016/j.chemosphere.2016.09.160] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 09/30/2016] [Accepted: 09/30/2016] [Indexed: 06/06/2023]
Abstract
The brominated flame retardants hexabromocyclododecanes (HBCDs) are ubiquitous environmental contaminants, widely distributed in aquatic systems including the marine environment and marine organisms. HBCDs are toxic to the development of both freshwater and marine fish. However, the impacts of HBCDs on marine invertebrates are not well known. In this study, the marine copepod, Tigriopus japonicus, was used to assess the bioaccumulation and developmental toxicity of technical HBCD (tHBCD) through water-borne exposure. The uptake rate constant of tHBCD by T. japonicus was high, which resulted in high bioaccumulation potential. The bioconcentration factors of tHBCD were 8.73 × 104 and 6.34 × 104 L kg-1 in T. japonicus, calculated using the kinetic and steady-state methods, respectively. Exposure of T. japonicus nauplii to tHBCD caused significant growth delay. The lowest-observable-effect-concentrations of tHBCD induced developmental delay were 30 and 8 μg L-1 for the F0 and F1 generations, respectively, which suggested that the F1 generation was more sensitive to tHBCD than the F0 generation and warranted multiple-generation toxicity tests for future studies. Furthermore, exposure of the adult copepods to tHBCD induced the transcription of oxidative stress response genes and apoptotic genes, e.g., SOD,CAT, GST, OGG1, P53 and Caspase-3. It was therefore speculated that tHBCD exposure induced the generation of reactive oxygen species in T. japonicus, which activated the oxidative stress defense genes and meanwhile resulted in oxidative DNA damage. The damaged DNA activated the transcription of p53 and triggered the caspase-mediated apoptosis pathway, which may be the reason for the tHBCD induced developmental delay in T. japonicus nauplii.
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Affiliation(s)
- Dalin Shi
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, China; Environmental Science Research Center, Xiamen University, Xiamen, 361102, China
| | - Dongmei Lv
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, China
| | - Wanxin Liu
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, China
| | - Rong Shen
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, China
| | - Dongmei Li
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, China
| | - Haizheng Hong
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, China; Center for Marine Environmental Chemistry and Toxicology, Xiamen University, Xiamen, 361102, China; Environmental Science Research Center, Xiamen University, Xiamen, 361102, China.
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20
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Michalec FG, Holzner M, Souissi A, Stancheva S, Barras A, Boukherroub R, Souissi S. Lipid nanocapsules for behavioural testing in aquatic toxicology: Time-response of Eurytemora affinis to environmental concentrations of PAHs and PCB. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2016; 170:310-322. [PMID: 26362585 DOI: 10.1016/j.aquatox.2015.08.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 08/20/2015] [Accepted: 08/21/2015] [Indexed: 06/05/2023]
Abstract
The increasing interest for behavioural investigations in aquatic toxicology has heightened the need for developing tools that allow realistic exposure conditions and provide robust quantitative data. Calanoid copepods dominate the zooplankton community in marine and brackish environments. These small organisms have emerged as attractive models because of the sensitivity of their behaviour to important environmental parameters and the significance of self-induced motion in their ecology. Estuarine copepods are particularly relevant in this context because of their incessant exposure to high levels of pollution. We used lipid nanocapsules to deliver sub-lethal concentrations of PAHs (pyrene, phenanthrene and fluoranthene) and PCB 153 into the digestive track of males and females Eurytemora affinis. This novel approach enabled us to achieve both contact and trophic exposure without using phytoplankton, and to expose copepods to small hydrophobic molecules without using organic solvent. We reconstructed the motion of many copepods swimming simultaneously by means of three-dimensional particle tracking velocimetry. We quantified the combined effects of contact and trophic toxicity by comparing the kinematic and diffusive properties of their motion immediately and after 3h and 24h of exposure. Despite the lack of toxicity of their excipients, both empty and loaded capsules increased swimming activity and velocity immediately after exposure. Laser microscopy imaging shows adhesion of nanocapsules on the exoskeleton of the animals, suggesting contact toxicity. The behavioural response resembles an escape reaction allowing copepods to escape stressful conditions. The contact toxicity of empty capsules and pollutants appeared to be additive and nanocapsules loaded with PCB caused the greatest effects. We observed a progressive accumulation of capsules in the digestive track of the animals after 3h and 24h of exposure, which suggests an increasing contribution of systemic toxicity. Nanocapsules filled with PAHs caused a smaller response compared to empty capsules, which we attribute to the narcotic properties of these toxicants. The sharp decrease in velocity after 24h of exposure to capsules loaded with PCB suggests physiological incapacitation following systemic toxicity. Clear differences are visible between genders in their response to empty and loaded capsules, for all exposure durations. Females appear to be less sensitive than males, suggesting different tolerance to stress conditions. Our results confirm the feasibility of using lipid nanocapsules to identify pollutant-induced behavioural alteration in the plankton. They also add new insights into the contact and systemic toxicity of common pollutants. We expect that our results will assist and evoke further research to develop suitable nanocarrier systems for behavioural testing.
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Affiliation(s)
- François-Gaël Michalec
- Institute of Environmental Engineering, ETH Zurich, Stefano-Franscini-Platz 5, 8093 Zurich, Switzerland.
| | - Markus Holzner
- Institute of Environmental Engineering, ETH Zurich, Stefano-Franscini-Platz 5, 8093 Zurich, Switzerland
| | - Anissa Souissi
- Univ. Lille, CNRS, UMR 8187, LOG, Laboratoire d'Océanologie et de Géosciences, F 59 000 Lille, France
| | - Stefka Stancheva
- Univ. Lille, CNRS, UMR 8520, IEMN, Institut d'Electronique, de Microélectronique et de Nanotechnologie, F 59 000 Lille, France
| | - Alexandre Barras
- Univ. Lille, CNRS, UMR 8520, IEMN, Institut d'Electronique, de Microélectronique et de Nanotechnologie, F 59 000 Lille, France
| | - Rabah Boukherroub
- Univ. Lille, CNRS, UMR 8520, IEMN, Institut d'Electronique, de Microélectronique et de Nanotechnologie, F 59 000 Lille, France
| | - Sami Souissi
- Univ. Lille, CNRS, UMR 8187, LOG, Laboratoire d'Océanologie et de Géosciences, F 59 000 Lille, France
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Lesueur T, Boulangé-Lecomte C, Restoux G, Deloffre J, Xuereb B, Le Menach K, Budzinski H, Petrucciani N, Marie S, Petit F, Forget-Leray J. Toxicity of sediment-bound pollutants in the Seine estuary, France, using a Eurytemora affinis larval bioassay. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2015; 113:169-75. [PMID: 25499049 DOI: 10.1016/j.ecoenv.2014.11.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 11/21/2014] [Accepted: 11/25/2014] [Indexed: 05/12/2023]
Abstract
Coastal urbanisation exposes surrounding estuarine environments to urban-related contaminants such as polycyclic aromatic hydrocarbons (PAHs), polychlorobiphenyls (PCBs) and pesticide mixtures. Hydrophobic contaminants can adsorb on estuarine sediments. They can subsequently be released on a massive scale in the aquatic environment due to artificial or natural phenomena (e.g. dredging, tides), thereby threatening living organisms. The contamination of sediment is a significant ecological issue in the Seine estuary, France. However, few relevant methods have been developed to assess sediment toxicity and its ecological impacts in a cost-effective way. In this context, we aimed to assess the toxicity of natural sediments from the Seine estuary on the development of the calanoid copepod Eurytemora affinis using a previously developed larval bioassay. This assay involves direct exposure of nauplii to elutriates of sediments for six days. Sediments were collected along the Seine estuary from six polluted sites and one reference site. Pollutants in this estuary included PAHs, PCBs and OCPs (organochlorine pesticides). Nauplius survival was significantly more affected by exposure to all contaminated sediment elutriates, than by exposure to sediment from Yville-sur-Seine (the reference site), whereas nauplius growth was significantly reduced after exposure to contaminated sediment elutriates from four of the six contaminated sites. We identified two distinct site clusters, one including both the sand-rich and the least polluted sediments (Oissel, Quillebeuf-sur-Seine, Caudebec-en-Caux) and the other including both the clay- and silt-rich, and the most polluted sediments (La Bouille, Poses, Pont de Normandie). As expected, survival was significantly more impacted after exposure to elutriates from the second cluster than from the first. This work enables (i) assessment of the toxicity of natural sediments in the Seine estuary and (ii) validation of the larval bioassay previously developed using sorbed sediment with model molecules.
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Affiliation(s)
- Teddy Lesueur
- UMR-I 02 SEBIO, FED 4116, ULH, Normandie University, BP 1123F-76063 Le Havre, France
| | | | - Gwendal Restoux
- UMR 8079 UPS CNRS ENGREF, University Paris-Sud, F-91405 Orsay cedex, France
| | - Julien Deloffre
- UMR CNRS 6143 M2C, FED 4116, UR, Normandie University, F-76821 Mont Saint Aignan, France
| | - Benoît Xuereb
- UMR-I 02 SEBIO, FED 4116, ULH, Normandie University, BP 1123F-76063 Le Havre, France
| | - Karyn Le Menach
- UMR CNRS 5805 EPOC-LPTC, Bordeaux University, F-33405 Talence, France
| | - Hélène Budzinski
- UMR CNRS 5805 EPOC-LPTC, Bordeaux University, F-33405 Talence, France
| | - Nathalie Petrucciani
- UMR-I 02 SEBIO, FED 4116, ULH, Normandie University, BP 1123F-76063 Le Havre, France
| | - Sabine Marie
- UMR-I 02 SEBIO, FED 4116, ULH, Normandie University, BP 1123F-76063 Le Havre, France
| | - Fabienne Petit
- UMR CNRS 6143 M2C, FED 4116, UR, Normandie University, F-76821 Mont Saint Aignan, France
| | - Joëlle Forget-Leray
- UMR-I 02 SEBIO, FED 4116, ULH, Normandie University, BP 1123F-76063 Le Havre, France.
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Rhee JS, Lee YM, Kim BM, Leung KMY, Kim IC, Yim JH, Lee JS. β-Naphthoflavone induces oxidative stress in the intertidal copepod, Tigriopus japonicus. ENVIRONMENTAL TOXICOLOGY 2015; 30:332-342. [PMID: 24136887 DOI: 10.1002/tox.21911] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Revised: 08/30/2013] [Accepted: 09/20/2013] [Indexed: 06/02/2023]
Abstract
β-Naphtoflavone (β-NF) is a flavonoid and enhances oxidative stress in vertebrates with little information from aquatic invertebrates as yet. In this study, we investigated the effects of β-NF on the antioxidant defense systems of the intertidal copepod Tigriopus japonicus. To measure the β-NF-triggered changes in oxidative stress markers, such as intracellular reactive oxygen species (ROS), glutathione (GSH) concentration, residual glutathione S-transferase (GST), glutathione peroxidase (GPx), glutathione reductase (GR), and superoxide dismutase (SOD) activity, T. japonicus were exposed to β-NF (0.5 and 1 mg/L) for 72 h. Significant (P < 0.05) induction of the intracellular ROS content (%) was observed in 1 mg/L of β-NF exposed T. japonicus, compared to the negative control and H2O2-exposed group. The GSH levels were significantly increased in the 0.5 mg/L of β-NF-exposed group for 12 h and 1 mg/L of β-NF-exposed groups for 12-24 h. GPx, GST, and GR activities showed a significant increase in the 1 mg/L β-NF-exposed group, indicating that β-NF induces oxidative stress in T. japonicus. To understand the effects of β-NF at the level of transcript expression, a 6K microarray analysis was employed. Transcript profiles of selected antioxidant-related genes were modulated after 72 h exposure to 1 mg/L of β-NF. From microarray data, 10 GST isoforms, GR, GPx, PH-GPx, and Se-GPx were chosen for a time-course test by real-time RT-PCR. T. japonicus GST-S, GST-O, GST-M, and GST-D1 were significantly increased in a 1 mg/L β-NF-exposed group. T. japonicus GPx, GR, and Se-GPx mRNA levels were also significantly increased at both concentrations. Our results revealed that oxidative stress was induced by β-NF exposure in T. japonicus.
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Affiliation(s)
- Jae-Sung Rhee
- Research Institute for Natural Sciences, Hanyang University, Seoul, 133-791, South Korea
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Harmon SM. The Toxicity of Persistent Organic Pollutants to Aquatic Organisms. PERSISTENT ORGANIC POLLUTANTS (POPS): ANALYTICAL TECHNIQUES, ENVIRONMENTAL FATE AND BIOLOGICAL EFFECTS 2015. [DOI: 10.1016/b978-0-444-63299-9.00018-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Zhang Q, Ye J, Chen J, Xu H, Wang C, Zhao M. Risk assessment of polychlorinated biphenyls and heavy metals in soils of an abandoned e-waste site in China. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2014; 185:258-265. [PMID: 24292442 DOI: 10.1016/j.envpol.2013.11.003] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 10/31/2013] [Accepted: 11/04/2013] [Indexed: 06/02/2023]
Abstract
Risk assessment of abandoned e-waste recycling areas received little attention. Herein, we report the concentrations of 16 PCBs and 7 heavy metals in soils near an abandoned e-waste recycling plant in Taizhou, China. Our data showed that levels of tri-, tetra-, penta-, hexa-PCBs were 9.01, 5.56, 12.93, 3.13 mg/kg, and Pb, Cd, Cu were 6082.9, 42.3, 2364.2 mg/kg soil. Cd was the most prevalent contaminant with Nemerow index value of 44.3. Contaminants have been transported from the abandoned site to nearby areas. The ecology risk assessment based on the high toxicological effect in Chinese hamster ovary cells and earthworms showed that both PCBs and heavy metal residue pose high risk to the ecosystem. Hazard quotient showed that Pb, Cd, Hg and Cu pose high health risks for adults and children. Our results recommended a full examination of the risk and regulatory compliance of abandoned e-waste recycling areas in the future.
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Affiliation(s)
- Quan Zhang
- College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, China; College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jingjia Ye
- College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Jinyuan Chen
- College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Hangjie Xu
- College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Cui Wang
- College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, China; College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.
| | - Meirong Zhao
- College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, China.
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Lesueur T, Boulangé-Lecomte C, Xuereb B, Budzinski H, Cachot J, Vicquelin L, Giusti-Petrucciani N, Marie S, Petit F, Forget-Leray J. Development of a larval bioassay using the calanoid copepod, Eurytemora affinis to assess the toxicity of sediment-bound pollutants. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2013; 94:60-66. [PMID: 23731865 DOI: 10.1016/j.ecoenv.2013.04.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 04/24/2013] [Accepted: 04/26/2013] [Indexed: 06/02/2023]
Abstract
Hydrophobic pollutants, in particular sediment-sorbed organic compounds, are widespread in the aquatic environment and could represent a threat to living organisms. Estuarine species, which live in turbulent ecosystems, are particularly exposed to this mode of contamination. For precise evaluation of the toxicity of hydrophobic contaminants desorbed from particles, a new larval assay using nauplii of the estuarine calanoid copepod Eurytemora affinis was developed. It consists of the direct exposure of copepods during naupliar development to elutriates of an unpolluted sediment spiked with different model contaminants. This bioassay measures the toxicity of the bioavailable fraction of particle-sorbed pollutants on the naupliar stage of copepods. Mortality and growth (non-invasive endpoints) in nauplii were analysed after six days of exposure. This approach was validated using six pollutants with different modes of action: benzo[a]pyrene (BaP), dimethylbenzo[a]anthracene (DMBA), phenanthrene (PHE), polychlorinated biphenyls (PCB 126, PCB 153) and 4-nonylphenol (4-NP). All these compounds induced a dose-dependent increase in toxic effects. Lethal effects only occurred at the highest tested concentrations: 58,541 and 6092 ng g(-1) dry weight sediment (dws), for PHE and DMBA, respectively. Sublethal effects (growth inhibition) were observed at lower concentrations for all tested compounds except PCB 153, from 8, 142, 297, 6092 and 8453 ng g(-1) dws for PCB 126, BaP, PHE, DMBA and 4-NP, respectively.
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Affiliation(s)
- Teddy Lesueur
- Normandie University, ULH, LEMA EA 3222, F-76600 Le Havre, France
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