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Tawfeek WS, Kassab AS, Al-Sokary ET, Abass ME, Sherif AH. Chlorella vulgaris algae ameliorates chlorpyrifos toxicity in Nile tilapia with special reference to antioxidant enzymes and Streptococcus agalactiae infection. Mol Biol Rep 2024; 51:616. [PMID: 38722391 PMCID: PMC11082019 DOI: 10.1007/s11033-024-09535-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 04/08/2024] [Indexed: 05/12/2024]
Abstract
BACKGROUND Chlorpyrifos (CPF) is a widely used pesticide in the production of plant crops. Despite rapid CPF biodegradation, fish were exposed to wastewater containing detectable residues. Recently, medicinal plants and algae were intensively used in aquaculture to replace antibiotics and ameliorate stress impacts. METHODS AND RESULTS An indoor experiment was conducted to evaluate the deleterious impacts of CPF pollution on Nile tilapia health and the potential mitigation role of Chlorella vulgaris algae. Firstly, the median lethal concentration LC50 - 72 h of CPF was determined to be 85.8 µg /L in Nile tilapia (35.6 ± 0.5 g body weight) at a water temperature of 27.5 °C. Secondly, fish were exposed to 10% of LC50 - 72 h for six weeks, and tissue samples were collected and examined every two weeks. Also, Nile tilapia were experimentally infected with Streptococcus agalactiae. Exposed fish were immunosuppressed expressed with a decrease in gene expressions of interleukin (IL) 1β, IL-10, and tumor necrosis factor (TNF)-α. Also, a decline was recorded in glutathione peroxidase (GPx), superoxide dismutase (SOD), and catalase (CAT) gene expression in the head kidney tissue. A high mortality rate (MR) of 100% was recorded in fish exposed to CPF for six weeks and challenged with S. agalactiae. Fish that received dietary C. vulgaris could restore gene expression cytokines and antioxidants compared to the control. After six weeks of CPF exposure, fish suffered from anemia as red blood cell count (RBCs), hemoglobin (Hb), and packed cell volume (PCV) significantly declined along with downregulation of serum total protein (TP), globulin (GLO), and albumin (ALB). Liver enzymes were significantly upregulated in fish exposed to CPF pollution, alanine aminotransferase (ALT) (42.5, 53.3, and 61.7 IU/L) and aspartate aminotransferase (AST) (30.1, 31.2, and 22.8) after 2, 4, and 6 weeks, respectively. On S. agalactiae challenge, high MR was recorded in Nile tilapia exposed to CPF (G3) 60%, 60%, and 100% in week 2, week 4, and week 6, and C. vulgaris provided a relative protection level (RPL) of 0, 14.29, and 20%, respectively. CONCLUSIONS It was concluded that CPF pollution induces immunosuppressed status, oxidative stress, and anemic signs in Nile tilapia. In contrast, C. vulgaris at a 50 g/kg fish feed dose could partially ameliorate such withdrawals, restoring normal physiological parameters.
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Affiliation(s)
- Walaa S Tawfeek
- Fish Disease Department, Animal Health Research Institute AHRI, Agriculture Research Center ARC, Dokki, Kafrelsheikh, 12619, Egypt
| | - Amina S Kassab
- Fish Disease Department, Animal Health Research Institute AHRI, Agriculture Research Center ARC, Dokki, Kafrelsheikh, 12619, Egypt
| | - Eman T Al-Sokary
- Biochemistry, Nutritional Deficiency Diseases and Toxicology Unit, Animal Health Research Institute AHRI, Agriculture Research Center ARC, Kafrelsheikh, 12619, Egypt
| | - Mona E Abass
- Biochemistry, Nutritional Deficiency Diseases and Toxicology Unit, Animal Health Research Institute AHRI, Agriculture Research Center ARC, Kafrelsheikh, 12619, Egypt
| | - Ahmed H Sherif
- Fish Disease Department, Animal Health Research Institute AHRI, Agriculture Research Center ARC, Dokki, Kafrelsheikh, 12619, Egypt.
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Mishra AK, Gopesh A, Singh KP. Effects of chlorpyrifos toxicity on brain, pseudobranchial neurosecretory system and swimming performance of a catfish, Heteropneustes fossilis. Drug Chem Toxicol 2024; 47:67-80. [PMID: 37122173 DOI: 10.1080/01480545.2023.2194580] [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: 11/04/2022] [Revised: 03/09/2023] [Accepted: 03/16/2023] [Indexed: 05/02/2023]
Abstract
In the present study, it was aimed to evaluate the adverse effects of CPF on the histopathology of the optic tectum and cerebellum, pseudobranchial neurosecretory system (PNS), biochemical assays of brain tissue, and locomotory behavior in catfish, Heteropneustes fossilis. The fishes were exposed to an environmentally relevant concentration of 0.09 and 0.192 mg/L of CPF for 7, 15, and 30 d. The CPF toxicity induced degenerative changes with significantly decreased cell size, number, and nucleo-cytoplasmic (N/C) ratio of the PNS; and altered neuro-architectural pattern of optic tectum with degenerative changes in mononuclear and granular cells and necrotic variation in granular and Purkinje cells of the cerebellum. The Acetylcholinesterase (AChE) and Catalase (CAT) activity in the CPF-exposed brain was significantly decreased, whereas Superoxide dismutase (SOD) and Malondialdehyde (MDA) level was significantly increased in comparison with control. In CPF-exposed fishes, the respiratory movements and locomotory behavioral pattern like swimming speed, total distance traveled, time mobile, absolute turn angle, head: distance traveled, maximum speed were significantly decreased, whereas time immobile and time freezing episodes were significantly increased as compared to control fishes. The present study concludes that environmentally relevant concentration of CPF may induce histopathological, biochemical, physiological, and behavioral disturbances in a non-target organism, H. fossilis.
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Affiliation(s)
- Ajeet Kr Mishra
- Neurobiology Lab, Department of Zoology, University of Allahabad, Allahabad, India
| | - Anita Gopesh
- Neurobiology Lab, Department of Zoology, University of Allahabad, Allahabad, India
| | - K P Singh
- Neurobiology Lab, Department of Zoology, University of Allahabad, Allahabad, India
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Banaee M, Sureda A, Faggio C. Protective effect of protexin concentrate in reducing the toxicity of chlorpyrifos in common carp (Cyprinus carpio). ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2022; 94:103918. [PMID: 35753671 DOI: 10.1016/j.etap.2022.103918] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 05/06/2022] [Accepted: 06/21/2022] [Indexed: 06/15/2023]
Abstract
The present study aimed to evaluate the protective effect of protexin supplementation against chlorpyrifos-induced oxidative stress and immunotoxicity in Cyprinus carpio. After 21 days, the activity of superoxide dismutase (SOD), glutathione peroxidase (GPx) and glutathione reductase (GR), and total antioxidant levels significantly decreased in hepatocytes of fish exposed to chlorpyrifos, while malondialdehyde (MDA) increased. Treatment with protexin was able to reverse the decrease in SOD and GR and significantly reduce MDA levels. Exposure to chlorpyrifos also induced alterations in blood biochemical parameters and caused immunosuppression. Dietary protexin return some parameters (aspartate aminotransferase, lactate dehydrogenase, and γ-glutamyltransferase activities, and glucose, cholesterol, total protein, creatinine, and complement C4 levels) to values similar to those of the control group. Based on the results, it can be concluded that protexin exerted protective effects against chlorpyrifos exposure in C. carpio reducing oxidative damage, and ameriorating blood biochemical alterations and the immunosuppression.
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Affiliation(s)
- Mahdi Banaee
- Aquaculture Department, Faculty of Natural Resources and the Environment, Behbahan Khatam Alanbia University of Technology, Behbahan, Iran.
| | - Antoni Sureda
- Research Group on Community Nutrition and Oxidative Stress, Health Research Institute of the Balearic Islands (IdISBa), and CIBEROBN Fisiopatología de la Obesidad la Nutrición, University of Balearic Islands, 07122 Palma de Mallorca, Spain.
| | - Caterina Faggio
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy.
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Roy S, Karmakar D, Pal S. Acute Toxicity Bioassay and Determination of LC 50 of Cadmium Chloride in Trichogaster (Colisa) fasciata. Appl Biochem Biotechnol 2022; 194:3890-3900. [PMID: 35556209 DOI: 10.1007/s12010-022-03953-1] [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: 06/22/2021] [Accepted: 05/02/2022] [Indexed: 11/26/2022]
Abstract
Cadmium chloride is a metal salt used in industries in a large scale. Trichogaster (Colisa) fasciata (common name banded gourami) is an air-breathing fresh water fish with both nutritional and ornamental values. In this present study, as per EPA guidelines, acute toxicity bioassay was performed in a 96-h static test method in four replicates, each replicate having one control and five concentrations (25, 50, 75, 100 and 125 mg/L, respectively) of the metal salt. A total of 192 fish was used in the study in four series with each replicate containing 8 fish per concentration. The water temperature was maintained at 20-22℃ during the study. The data observed were analysed statistically on the basis of Finney's Probit Analysis method using SPSS software. The estimated 96-h LC50 value of cadmium chloride for the fish was 49.5 mg/L.
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Affiliation(s)
- Saikat Roy
- Department of Zoology, Maharaja Manindra Chandra College, Kolkata, India.
| | | | - Sarmila Pal
- PG Department of Zoology, Hooghly Mohsin College, Hooghly-Chinsurah, India
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Application of fenitrothion on Heteropneustes fossilis causes alteration in morphology of erythrocytes via modifying hematological parameters. Toxicol Rep 2022; 9:895-904. [DOI: 10.1016/j.toxrep.2022.04.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 04/13/2022] [Accepted: 04/13/2022] [Indexed: 11/23/2022] Open
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Hasan M, Sumon KA, Siddiquee MM, Bhandari RK, Prodhan MDH, Rashid H. Thiamethoxam affects the developmental stages of banded gourami (Trichogaster fasciata). Toxicol Rep 2022; 9:1233-1239. [DOI: 10.1016/j.toxrep.2022.05.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 05/16/2022] [Accepted: 05/21/2022] [Indexed: 10/18/2022] Open
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Jiang Y, He Y, Li W, Ni J, Li J, Peng L, Luo L, Rui R, Ju S. Exposure to chlorpyrifos leads to spindle disorganization and mitochondrial dysfunction of porcine oocytes during in vitro maturation. Theriogenology 2021; 173:249-260. [PMID: 34399389 DOI: 10.1016/j.theriogenology.2021.08.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 08/03/2021] [Accepted: 08/05/2021] [Indexed: 12/28/2022]
Abstract
Chlorpyrifos (CPF), as one of the most extensively applied organophosphorus pesticides (OPs) in agricultural and domestic settings, causes a potential threat to human and animal health. Various reproductive toxicities of CPF have been reported, however, little information is available on whether CPF exposure could exert toxic effects on mammalian oocytes. Herein, the effects of CPF on the meiotic maturation and developmental capability of porcine oocytes were investigated, and the possible toxic mechanisms of CPF were also explored. Porcine cumulus-oocyte complexes (COCs) were treated with 0, 5, 10, or 20 μM CPF for 44 h during in vitro maturation (IVM), and the results showed that the first polar body (PB1) extrusion rate was significantly decreased, and the subsequent developmental competence of the resulting metaphase II (MII) oocytes was also impaired when the concentration of CPF reached 10 μM. In addition, a higher percentage of CPF-exposed oocytes were arrested at the anaphase-telophase I (ATI) stage, accompanied by misaligned chromosomes and aberrant spindles. Furthermore, higher levels of ROS and upregulated antioxidant-related genes (CAT, SOD1, SOD2, GPX) were detected in CPF-treated oocytes. Additionally, CPF treatment led to the depolarization of mitochondrial membrane potential (MMP) and the release of cytochrome c (Cyt c). Simultaneously, the apoptotic rate of the oocytes was significantly increased, and the expression levels of Bax and CASPASE3 were significantly upregulated after CFP exposure. Together, exposure to 10 μM CPF can disrupt the meiotic cycle progression, lead to aberrant spindles and mitochondrial dysfunction, which eventually induce oxidative stress and apoptosis in porcine oocytes.
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Affiliation(s)
- Yao Jiang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China
| | - Yijing He
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China
| | - Wenhui Li
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China
| | - Jun Ni
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China
| | - Jia Li
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China
| | - Lei Peng
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China
| | - Liping Luo
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China
| | - Rong Rui
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China
| | - Shiqiang Ju
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China.
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Muliari M, Zulfahmi I, Akmal Y, Karja NWK, Nisa C, Sumon KA, Rahman MM. Toxicity of palm oil mill effluent on the early life stages of Nile tilapia (Oreochromis niloticus, Linnaeus 1758). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:30592-30599. [PMID: 32468372 DOI: 10.1007/s11356-020-09410-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 05/21/2020] [Indexed: 06/11/2023]
Abstract
Harmful effects of several pollutants have been reported on early life stages of fish. However, the effects of palm oil mill effluent (POME) on fish early life stages are still unexplored. Therefore, the objective of this present study was to elucidate the impact of POME on the early life stages of Nile tilapia (Oreochromis niloticus). Fertilized eggs of Nile tilapia were exposed to four concentrations of POME (0, 1.565, 2.347, and 3.130 mg/L) in 20 plastic funnels. Each of the control and treatment groups was maintained in five replicates. The cumulative hatching rate, malformation rate, body length, and deformities of larvae were analyzed. Results showed that hatching rate and survival rate of Nile tilapia larvae significantly decreased with increasing concentrations of POME. In contrast to, malformation rate and heart rate were significantly increased. Furthermore, results showed several malformations of Nile tilapia larvae including lordosis, kyphosis, and curved tail when exposed to 1.565 mg/L, 2.347 mg/L, and 3.130 mg/L of POME concentrations. Further research is required to understand the physiological mechanisms of different endpoints in the early stages of Nile tilapia induced by the toxicity of POME.
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Affiliation(s)
- Muliari Muliari
- Department of Aquaculture, Faculty of Agriculture, Almuslim University, Kabupaten Bireuen, Indonesia
| | - Ilham Zulfahmi
- Department of Biology, Faculty of Science and Technology, Ar-Raniry State Islamic University, Banda Aceh, 23111, Indonesia.
| | - Yusrizal Akmal
- Department of Aquaculture, Faculty of Agriculture, Almuslim University, Kabupaten Bireuen, Indonesia
| | - Ni Wayan Kurniani Karja
- Department of Veterinary Clinic, Reproduction and Pathology, Faculty of Veterinary Medicine, IPB University, Bogor, Indonesia
| | - Chairun Nisa
- Department of Anatomy Physiology and Pharmacology, Faculty of Veterinary Medicine, IPB University, Bogor, Indonesia
| | - Kizar Ahmed Sumon
- Department of Fisheries Management, Bangladesh Agricultural University, -2202, Mymensingh, Bangladesh
| | - Mohammad Mahmudur Rahman
- Global Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, Callaghan, NSW, 2308, Australia
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Rahman MS, Islam SMM, Haque A, Shahjahan M. Toxicity of the organophosphate insecticide sumithion to embryo and larvae of zebrafish. Toxicol Rep 2020; 7:317-323. [PMID: 32082990 PMCID: PMC7021556 DOI: 10.1016/j.toxrep.2020.02.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 01/26/2020] [Accepted: 02/06/2020] [Indexed: 11/19/2022] Open
Abstract
The 24 h LC50 value of sumithion for embryo was 0.235 mg L−1. Several malformations were observed in embryos exposed to different concentrations of sumithion. The 24, 48 and 72 h LC50 values of sumithion for larvae were 0.620, 0.475 and 0.341 mg L−1, respectively. Different deformities were evident in the sumithion exposed larvae.
Sumithion, a synthetic organophosphate, is widely used as an agricultural insecticide and for control of tiger bug (Cicindela spp.) in larval rearing for aquaculture. An experiment was conducted to examine the effects of sumithion on embryological and larval development of zebrafish Danio rerio. Fertilized egg (n = 100) and larvae (n = 100) were exposed to six concentrations of sumithion (0, 0.1, 0.2, 0.4, 0.8 and 1.6 mg L−1) in three replicates. LC50 values for embryos and larvae were calculated by probit analysis. The 24 h LC50 value of sumithion for embryo was 0.235 (0.079-0.428) mgL−1. Increasing sumithion concentrations decreased hatching success and increased embryonic mortality. In embryos, sumithion induced several malformations including immature yolk sac, dark yolk sac, yolk sac bud, broken eggshell and notochord, unhatched eggs. Larval LC50 values at 24, 48 and 72 h of various doses of sumithion exposure were 0.620 (0.436-0.963), 0.475 (0.302-0.801) and 0.341 (0.177-0.617) mgL−1, respectively. Various physical deformities, including edema, notochord deformity, yolk sac damage, body arcuation, lordosis and black pigmentation on the yolk sac were evident in response to different concentrations of sumithion. The results of the current study indicate that sumithion exerts developmental toxicity to zebrafish embryos and larvae. It is expected that current findings will increase sensitivity about the toxic effect of sumithion in early development, as well the possibility of similar actions induced by other insecticides and pesticides.
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Sumon KA, Yesmin MF, Van den Brink PJ, Bosma RH, Peeters ETHM, Rashid H. Effects of long-term chlorpyrifos exposure on mortality and reproductive tissues of Banded Gourami ( Trichogaster fasciata). JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2019; 54:549-559. [PMID: 31094287 DOI: 10.1080/03601234.2019.1614399] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
This study assessed the long-term toxicity of chlorpyrifos on survival and reproduction of Banded Gourami by using mortality, gonado-somatic index (GSI) and histopathological observations as endpoints. Adult fish were exposed to five different concentrations of chlorpyrifos (0, 15, 50, 150, 500 µg/L) in 15 PVC tanks for 15, 30, 45, 60 and 75 days. Results showed that all male and female fish died after 15 days of 500 µg/L chlorpyrifos exposure. No consistent significant effect was observed for both male and female GSI. Furthermore, results showed dose- and time-dependent histopathological alterations for both ovary and testes. The 60-d No Observed Effect Concentration (NOEC) for most histopathological alterations of Banded Gourami ovary and testes was 50 μg/L, while 60-d NOEC for mortality of both male and female fish was < 15 μg/L. The results show that the long-term exposure to chlorpyrifos not only affect the reproductive tissues of Banded Gourami at exposure concentrations but also cause their mortality. Future studies should evaluate effects at lower concentrations.
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Affiliation(s)
- Kizar Ahmed Sumon
- a Aquatic Ecology and Water Quality Management Group , Wageningen University , Wageningen , The Netherlands
- b Department of Fisheries Management , Bangladesh Agricultural University , Mymensingh , Bangladesh
| | - Most Farzana Yesmin
- b Department of Fisheries Management , Bangladesh Agricultural University , Mymensingh , Bangladesh
| | - Paul J Van den Brink
- a Aquatic Ecology and Water Quality Management Group , Wageningen University , Wageningen , The Netherlands
- c Wageningen Environmental Research (Alterra) , Wageningen , The Netherlands
| | - Roel H Bosma
- d Aquaculture and Fisheries Group , Wageningen University , Wageningen , The Netherlands
| | - Edwin T H M Peeters
- a Aquatic Ecology and Water Quality Management Group , Wageningen University , Wageningen , The Netherlands
| | - Harunur Rashid
- b Department of Fisheries Management , Bangladesh Agricultural University , Mymensingh , Bangladesh
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Sumon KA, Rashid H, Peeters ETHM, Bosma RH, Van den Brink PJ. Environmental monitoring and risk assessment of organophosphate pesticides in aquatic ecosystems of north-west Bangladesh. CHEMOSPHERE 2018; 206:92-100. [PMID: 29734095 DOI: 10.1016/j.chemosphere.2018.04.167] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 04/26/2018] [Accepted: 04/27/2018] [Indexed: 06/08/2023]
Abstract
The use of organophosphate pesticides (OPPs) to protect a variety of crops has increased in Bangladesh. OPPs may contaminate surrounding aquatic environments through several routes including spray drift, surface runoff and groundwater leaching. Since it is unknown how much OPP end ups in aquatic environment in Bangladesh, the objectives of the present study were to quantify the residues of ten most commonly used OPPs in water and sediment of water bodies of north-west Bangladesh and to assess their ecological risks for aquatic organisms. The risks of the pesticides in surface water and sediment were assessed using a first-tier risk quotient (RQ) approach. The higher-tier PERPEST model was used to refine the ecological risks of pesticides when RQ indicated a potential risk. Results showed the most frequently detected pesticides that appeared in high concentrations were chlorpyrifos, diazinon and quinalphos in surface water and sediment. The highest concentration of OPPs measured in water was 9.1 μg chlorpyrifos/L (median of 1.95 μg/L), while this was 51 μg diazinon/kg dw (median of 11 μg/kg dw) for sediment. Furthermore, results showed high acute and/or chronic RQs (RQ > 1) in surface water and sediment for chlorpyrifos, diazinon, quinalphos, malathion and fenitrothion. The higher-tier PERPEST model confirmed risks of chlorpyrifos, diazinon, quinalphos and fenitrothion for aquatic insects, micro- and macro-crustaceans which were previously derived by RQ-based risk assessment for aquatic organisms. Furthermore, the results of the PERPEST model also indicated possible indirect effects of these pesticides on algae and macrophytes, community metabolism, rotifers and other macro-invertebrates.
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Affiliation(s)
- Kizar Ahmed Sumon
- Aquatic Ecology and Water Quality Management Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands; Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.
| | - Harunur Rashid
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh; Science and Math Program, Asian University for Women, Chittagong-4000, Bangladesh
| | - Edwin T H M Peeters
- Aquatic Ecology and Water Quality Management Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands
| | - Roel H Bosma
- Aquaculture and Fisheries Group, Wageningen University, P.O. Box 338, 6700 AH Wageningen, The Netherlands
| | - Paul J Van den Brink
- Aquatic Ecology and Water Quality Management Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands; Wageningen Environmental Research, P.O. Box 47, 6700 AA Wageningen, The Netherlands
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