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Ohnuki S, Tokishita S, Kojima M, Fujiwara S. Effect of chlorpyrifos-exposure on the expression levels of CYP genes in Daphnia magna and examination of a possibility that an up-regulated clan 3 CYP, CYP360A8, reacts with pesticides. ENVIRONMENTAL TOXICOLOGY 2024; 39:3641-3653. [PMID: 38504311 DOI: 10.1002/tox.24224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 02/19/2024] [Accepted: 03/04/2024] [Indexed: 03/21/2024]
Abstract
Daphnia magna is a test organism used for ecological risk assessments of pesticides, but little is known about the expression levels of cytochrome P450s (CYP)s and their changes after pesticide exposure in the less than 24-h-olds used for ecotoxicity tests. In this study, D. magna juveniles were exposed to 0.2 μg/L of chlorpyrifos under the conditions for acute immobilization test as specified by the OECD test guideline for 24 h, and then the gene expression was compared between the control and chlorpyrifos-exposure groups by RNA-sequencing analysis, with a focus on CYP genes. Among 38 CYP genes expressed in the control group, seven were significantly up-regulated while two were significantly down-regulated in the chlorpyrifos-exposure group. Although the sublethal concentration of chlorpyrifos did not change their expression levels so drastically (0.8 < fold change < 2.6), CY360A8 of D. magna (DmCYP360A8), which had been proposed to be responsible for metabolism of xenobiotics, was abundantly expressed in controls yet up-regulated by chlorpyrifos. Therefore, homology modeling of DmCYP360A8 was performed based on the amino acid sequence, and then molecular docking simulations with the insecticides that were indicated to be metabolized by CYPs in D. magna were conducted. The results indicated that DmCYP360A8 could contribute to the metabolism of diazinon and chlorfenapyr but not chlorpyrifos. These findings suggest that chlorpyrifos is probably detoxified by other CYP(s) including up-regulated and/or constitutively expressed one(s).
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Affiliation(s)
- Shinpei Ohnuki
- Odawara Research Center, Nippon Soda Co., Ltd., Odawara, Japan
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| | - Shinichi Tokishita
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| | - Masaki Kojima
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| | - Shoko Fujiwara
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
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2
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Wang H, Xin T, Wang H, Wen K, Liu Y, Wang J, Zou Z, Zhong L, Xia B. Stress response and tolerance mechanisms of spirobudiclofen exposure based on multiomics in Panonychus citri (Acari: Tetranychidae). iScience 2023; 26:107111. [PMID: 37416453 PMCID: PMC10320506 DOI: 10.1016/j.isci.2023.107111] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 05/07/2023] [Accepted: 06/08/2023] [Indexed: 07/08/2023] Open
Abstract
The toxicity of insecticides used in the field decreases gradually to sublethal concentrations over time. Therefore, it is necessary to study sublethal effects of pesticides for controlling population explosion. Panonychus citri is a global pest which control is based on insecticides. This study explores the stress responses of spirobudiclofen on the P. citri. Spirobudiclofen significantly inhibited survival and reproduction of P. citri, and the effects aggravated as concentration increased. The transcriptomes and metabolomes of spirobudiclofen-treated and control were compared to characterize spirobudiclofen molecular mechanism. Transcriptomics indicated stress induced by spirobudiclofen stimulated immune defense, antioxidative system, cuticle formation, and lipid metabolism, as deduced from RNA-seq analysis. Meanwhile, our study found that tolerance metabolism in P. citri was regulated by promoting the metabolism of glycerophospholipids, glycine, serine, and threonine. The results of this study can provide a basis for exploring the adaptation strategies of P. citri to spirobudiclofen stress.
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Affiliation(s)
- Hongyan Wang
- School of Life Sciences, Nanchang University, Nanchang 330031, P.R.China
| | - Tianrong Xin
- School of Life Sciences, Nanchang University, Nanchang 330031, P.R.China
| | - Haifeng Wang
- School of Life Sciences, Nanchang University, Nanchang 330031, P.R.China
| | - Kexin Wen
- School of Life Sciences, Nanchang University, Nanchang 330031, P.R.China
| | - Yimeng Liu
- School of Life Sciences, Nanchang University, Nanchang 330031, P.R.China
| | - Jing Wang
- School of Life Sciences, Nanchang University, Nanchang 330031, P.R.China
| | - Zhiwen Zou
- School of Life Sciences, Nanchang University, Nanchang 330031, P.R.China
| | - Ling Zhong
- Nanchang Plant Protection and Inspection Bureau of Jiangxi Province, Nanchang 330096, P.R.China
| | - Bin Xia
- School of Life Sciences, Nanchang University, Nanchang 330031, P.R.China
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3
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Alvarado-Suárez GB, Silva-Briano M, Arzate-Cárdenas MA, Carbajal-Hernández AL, Yáñez-Rivera B, Rico-Martínez R. Feeding behavior of early life stages of the zebrafish Danio rerio is altered by exposure to glyphosate. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:85172-85184. [PMID: 35794329 DOI: 10.1007/s11356-022-21790-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 06/28/2022] [Indexed: 06/15/2023]
Abstract
Glyphosate levels and the transfer of glyphosate across trophic levels have rarely been studied in zooplankton. The food preferences of zebrafish during the first-feeding stage (which is critical for the survival of organisms), were analyzed because of the requirement for live food. Larval survival begins to be affected when glyphosate intake exceeds 0.3666 µg/larvae/day, in the case that only the food is contaminated; if the medium is also contaminated, the effects on survival start from 0.2456 µg/larvae/day. It was shown that glyphosate was more likely to be incorporated through the medium than through the food (zooplankton), which supports the results of previous studies that have ruled out the potential for biomagnification. The bioconcentration factor (BCF) of glyphosate was determined using an ELISA tests specific to measure glyphosate in the fish D. rerio, the rotifers Brachionus calyciflorus and Lecane papuana, and the cladoceran Ceriodaphnia dubia. The experimental design consisted in exposing seven zebrafish adults per replica (four replicates) in three treatments 1, 5, and 10 mg/L of glyphosate for 96 h to obtain bioconcentration factors in the gills, liver, and muscle. These concentrations were selected as potential glyphosate concentrations right after application as double highest reported concentration. Glyphosate levels in zooplankton can represent up to 6.26% of the total weight of rotifers (BFC = 60.35) and in zebrafish adult organs were less than 8 µg/mg of tissue (BCF values < 6). Although glyphosate does not biomagnify, our results suggest that glyphosate affected the dynamics between zooplankton and zebrafish larvae, diminishing survival and feeding rates, given that zooplankton species bioconcentrate glyphosate in large quantities. The BCF values found in this contribution are higher than expected. Glyphosate exposure affected energy metabolism and feeding behavior of zebrafish larvae, which presented high mortality rates at environmentally relevant concentrations.
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Affiliation(s)
- Gabriela Beatriz Alvarado-Suárez
- Universidad Autónoma de Aguascalientes, Departamento de Biología, Avenida Universidad 940, Ags. C. P. 20131, Aguascalientes, Mexico
| | - Marcelo Silva-Briano
- Departamento de Química, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Avenida Universidad 940, Ciudad Universitaria Aguascalientes, Aguascalientes, 20131, México
| | - Mario Alberto Arzate-Cárdenas
- Universidad Autónoma de Aguascalientes, Departamento de Biología, Avenida Universidad 940, Ags. C. P. 20131, Aguascalientes, Mexico
- Cátedras CONACYT, Consejo Nacional de Ciencia Y Tecnología, Av. Insurgentes Sur 1582, Col. Crédito Constructor, Alcaldía Benito Juárez, Ciudad de México, 03940, México
| | - Ana Laura Carbajal-Hernández
- Universidad Autónoma de Aguascalientes, Departamento de Biología, Avenida Universidad 940, Ags. C. P. 20131, Aguascalientes, Mexico
| | - Beatriz Yáñez-Rivera
- Cátedras CONACYT, Consejo Nacional de Ciencia Y Tecnología, Av. Insurgentes Sur 1582, Col. Crédito Constructor, Alcaldía Benito Juárez, Ciudad de México, 03940, México.
- CIAD AC, Unidad Mazatlán en Acuicultura Y Manejo Ambiental, Avenida Sábalo-Cerritos S/N, Estero del Yugo, Mazatlán, Sin. 82112, México.
| | - Roberto Rico-Martínez
- Universidad Autónoma de Aguascalientes, Departamento de Biología, Avenida Universidad 940, Ags. C. P. 20131, Aguascalientes, Mexico.
- Departamento de Química, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Avenida Universidad 940, Ciudad Universitaria Aguascalientes, Aguascalientes, 20131, México.
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4
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Vera-Herrera L, Araújo CVM, Cordero-de-Castro A, Blasco J, Picó Y. Assessing the colonization by Daphnia magna of pesticide-disturbed habitats (chlorpyrifos, terbuthylazine and their mixtures) and the behavioral and neurotoxic effects. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 311:119983. [PMID: 35988674 DOI: 10.1016/j.envpol.2022.119983] [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: 06/03/2022] [Revised: 08/04/2022] [Accepted: 08/12/2022] [Indexed: 06/15/2023]
Abstract
The spread of pesticides in water bodies integrated into agricultural landscapes may prevent some areas from being colonized. In this study, the effects on the colonization responses of D. magna exerted by gradients of realistic environmental concentrations of the pesticides chlorpyrifos, terbuthylazine and their mixtures were tested in a novel multicompartment non-forced exposure system. Furthermore, the effects of both pesticides and their mixtures on the swimming behavior and the neurotransmission activity of D. magna were analyzed using a traditional forced exposure system. The synthesis and concentration of the main environmental metabolites of terbuthylazine were also analyzed. Results confirmed that D. magna exposed to mixture gradients were able to detect the pollutants and their colonization dynamics were drastically inhibited. The swimming behavior increased in D. magna exposed to the highest concentration of the mixture treatment. AChE activity was only significantly inhibited in the D. magna exposed to the highest concentration of chlorpyrifos. Changes in swimming behavior could not be directly related to the effects on AChE. Furthermore, the synthesis of the metabolite terbuthylazine 2-hydroxy during the course of the experiments was confirmed. These results demonstrate the importance of integrating pesticide mixtures in both non-forced and forced exposure systems during ecotoxicological assays.
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Affiliation(s)
- Lucía Vera-Herrera
- Food and Environmental Safety Research Group of the University of Valencia (SAMA-UV), Desertification Research Centre (CIDE), CSIC-UV-GV, Moncada-Naquera Road, Km 4.5, 46113, Valencia, Spain.
| | - Cristiano V M Araújo
- Department of Ecology and Coastal Management, Institute of Marine Sciences of Andalusia (ICMAN - CSIC), Puerto Real, Cádiz, 11510, Spain.
| | - Andrea Cordero-de-Castro
- Department of Ecology and Coastal Management, Institute of Marine Sciences of Andalusia (ICMAN - CSIC), Puerto Real, Cádiz, 11510, Spain.
| | - Julián Blasco
- Department of Ecology and Coastal Management, Institute of Marine Sciences of Andalusia (ICMAN - CSIC), Puerto Real, Cádiz, 11510, Spain.
| | - Yolanda Picó
- Food and Environmental Safety Research Group of the University of Valencia (SAMA-UV), Desertification Research Centre (CIDE), CSIC-UV-GV, Moncada-Naquera Road, Km 4.5, 46113, Valencia, Spain.
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5
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Kong R, Yang C, Huang K, Han G, Sun Q, Zhang Y, Zhang H, Letcher RJ, Liu C. Application of agricultural pesticides in a peak period induces an abundance decline of metazoan zooplankton in a lake ecosystem. WATER RESEARCH 2022; 224:119040. [PMID: 36099761 DOI: 10.1016/j.watres.2022.119040] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 08/22/2022] [Accepted: 08/29/2022] [Indexed: 06/15/2023]
Abstract
The contamination of pesticides has been recognized as a major stressor in fresh water ecosystems in terms of the losses of services and population declines and extinctions. However, information on the adverse effects of pesticides on zooplankton communities under natural field conditions are still lacking, although zooplankton is quite sensitive to most of pesticides in laboratory studies. In this study, a natural lake ecosystem (Liangzi Lake) was used to determine the relationship between pesticide contamination and abundance decline of metazoan zooplankton. In August 2020, the comprehensive trophic level indexes and the abundance of phytoplankton in the 14 sampling sites of Liangzi Lake were comparable, but the abundance of metazoan zooplankton showed significant variations across two orders of magnitude. These results suggested that other factors, such as pesticide contamination, might be responsible for the variations of metazoan zooplankton community. Furthermore, the responsible pesticides were screened, and totally 29 pesticides were obtained. Finally, five pesticides were identified to provide more than 99.4% toxic contributions and chlorpyrifos and cypermethrin were two main causal agents. These results were further supported by laboratory exposure experiments using D. magna and field study in November 2020, where the concentrations of the 29 pesticides were strongly decreased and the abundance of metazoan zooplankton was comparable across the 14 sites of Liangzi Lake. Taken together, this work provided an evidence that the contamination of pesticides might be responsible for the abundance decline of metazoan zooplankton in a natural freshwater ecosystem.
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Affiliation(s)
- Ren Kong
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, China; College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Chunxiang Yang
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Kai Huang
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Guixin Han
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Qian Sun
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Yongkang Zhang
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Hui Zhang
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China.
| | - Robert J Letcher
- Departments of Chemistry and Biology, Carleton University, Ottawa K1S 5B6, Ontario, Canada
| | - Chunsheng Liu
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, China; College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China.
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6
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Galhano V, Zeumer R, Monteiro MS, Knopf B, Meisterjahn B, Soares AMVM, Loureiro S, Schlechtriem C, Lopes I. Effects of wastewater-spiked nanoparticles of silver and titanium dioxide on survival, growth, reproduction and biochemical markers of Daphnia magna. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 839:156079. [PMID: 35605874 DOI: 10.1016/j.scitotenv.2022.156079] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 05/16/2022] [Accepted: 05/16/2022] [Indexed: 06/15/2023]
Abstract
Silver (Ag) and titanium dioxide (TiO2) nanoparticles (NPs) are released into aquatic environments through wastewater treatment plants (WWTPs). Even though these NPs are mostly retained in WWTPs, a small fraction can be found in released effluents and may exert toxic effects on aquatic biota. Currently, the available information about the sublethal effects of wastewater-borne NPs on aquatic organisms is inconclusive and the importance of exposure media remains poorly understood. Previously, we demonstrated that rainbow trout juveniles chronically exposed to wastewater-borne AgNPs or TiO2NPs caused no effects on growth, but antioxidative stress mechanisms were triggered in fish organs. Accordingly, this study aimed to: (i) assess the chronic (21-d) effects of wastewater-borne AgNPs (0.3-23.5 μg L-1 Ag) and TiO2NPs (2.7-3.9 μg L-1 Ti) on survival, growth and reproduction of Daphnia magna; (ii) determine the short-term (96-h) effects of wastewater-borne AgNPs (30.3 μg L-1 Ag) and TiO2NPs (6.3 μg L-1 Ti) at the subcellular level (biochemical markers of neurotoxicity, anaerobic metabolism and oxidative stress); and (iii) compare the effects obtained in (i) and (ii) with the corresponding ones induced by effluent-supplemented and water-dispersed NPs. Total Ag and Ti levels were analytically quantified in all treatments. It was demonstrated that both wastewater-borne NPs are considered non-toxic to daphnids at tested concentrations, considering the endpoints at the individual (survival, growth, reproduction) and subcellular (biochemical markers) levels. Contrarily, when pristine forms of NPs were supplemented to effluents or water, concentration-dependent effects were noticed, particularly on cumulative offspring of daphnids. The significant effects on anaerobic metabolism and detoxification pathways caused by the effluent indicate background toxicity. Bearing in mind the achievement of a suitable risk assessment of NPs in aquatic environments, this combined approach looking at both the individual and subcellular levels responses come up with relevant information about the ecotoxicological harmlessness of wastewater-borne NPs in complex environmental matrices like WWTP effluents.
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Affiliation(s)
- Victor Galhano
- Department of Biology & CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
| | - Richard Zeumer
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Department Bioaccumulation and Animal Metabolism, Auf dem Aberg 1, 57392 Schmallenberg, Germany; Institute of Environmental Research (Biology V), RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany.
| | - Marta S Monteiro
- Department of Biology & CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
| | - Burkhard Knopf
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Department Bioaccumulation and Animal Metabolism, Auf dem Aberg 1, 57392 Schmallenberg, Germany.
| | - Boris Meisterjahn
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Department Bioaccumulation and Animal Metabolism, Auf dem Aberg 1, 57392 Schmallenberg, Germany.
| | - Amadeu M V M Soares
- Department of Biology & CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
| | - Susana Loureiro
- Department of Biology & CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
| | - Christian Schlechtriem
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Department Bioaccumulation and Animal Metabolism, Auf dem Aberg 1, 57392 Schmallenberg, Germany; Institute of Environmental Research (Biology V), RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany.
| | - Isabel Lopes
- Department of Biology & CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
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Lemos MFL. Biomarker Studies in Stress Biology: From the Gene to Population, from the Organism to the Application. BIOLOGY 2021; 10:1340. [PMID: 34943255 PMCID: PMC8698987 DOI: 10.3390/biology10121340] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 11/27/2021] [Accepted: 12/01/2021] [Indexed: 12/18/2022]
Abstract
Endpoints assessed at the population or community level are most often the result of the sum of effects on individuals, arising from the effects at the cellular and molecular levels. Within this framework, these lower biological level endpoints are more responsive at an early stage of exposure, making them potential toolboxes to be used as early-warning markers to address stress. Given this, by linking responses and understanding organisms' metabolism and physiology, the possibilities for the use of biomarkers in stress biology are vast. Here, biomarker comprehensive examples are given to enlighten the need to link levels of biological organization, and their usefulness for a myriad of fields and applications is presented and discussed.
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Affiliation(s)
- Marco F L Lemos
- MARE-Marine and Environmental Sciences Centre, ESTM, Polytechnic of Leiria, 2520-641 Peniche, Portugal
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8
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Pescatore T, Di Nica V, Finizio A, Ademollo N, Spataro F, Rauseo J, Patrolecco L. Sub-lethal effects of soil multiple contamination on the avoidance behaviour of Eisenia fetida. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 226:112861. [PMID: 34628156 DOI: 10.1016/j.ecoenv.2021.112861] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 08/25/2021] [Accepted: 09/30/2021] [Indexed: 06/13/2023]
Abstract
Natural ecosystems are frequently exposed to complex mixtures of different chemicals. However, the environmental risk assessment is mainly based on data from individual substances. In this study, the individual and combined effects on the terrestrial earthworm E. fetida exposed to the anionic surfactant sodium lauryl ether sulphate (SLES) and the pesticides chlorpyrifos (CPF) and imidacloprid (IMI) were investigated, by using the avoidance behaviour as endpoint. Earthworms were exposed to a soil artificially contaminated with five sub-lethal concentrations of each contaminant, both as single substances and in combination of binary and ternary mixtures. Overall results showed that IMI provoked the highest avoidance effect on earthworms, with a concentration value that induced an avoidance rate of 50% of treated organisms (AC50) of 1.30 mg/kg, followed by CPF (AC50 75.26 mg/kg) and SLES (AC50 139.67 mg/kg). The application of the Combination Index (CI) method, indicated that a deviation from the additive response occurred for most of the tested chemical mixtures, leading to synergistic or antagonistic avoidance responses. Synergistic effects were produced by the exposure to the two lowest concentrations of the CPF+IMI mixture, and by the highest concentrations of SLES+CPF and SLES+CPF+IMI mixtures. On the contrary, antagonistic effects were observed at the lowest concentrations of the binary mixtures containing the SLES and at almost all the tested concentrations of the SLES+CPF+IMI mixture (with the exception of the highest tested concentration). These results show that the avoidance test is suitable to assess the detrimental effects exerted on earthworms by chemical mixtures in soil ecosystems and the use of behavioural endpoints can increase the ecological significance of environmental risk assessment procedures.
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Affiliation(s)
- Tanita Pescatore
- Institute of Polar Sciences - National Research Council (ISP-CNR), Rome, Italy; Department of Ecological and Biological Science (DEB-Tuscia University), Viterbo, Italy
| | - Valeria Di Nica
- Department of Earth and Environmental Sciences, University of Milano Bicocca, Milan, Italy.
| | - Antonio Finizio
- Department of Earth and Environmental Sciences, University of Milano Bicocca, Milan, Italy
| | - Nicoletta Ademollo
- Institute of Polar Sciences - National Research Council (ISP-CNR), Rome, Italy
| | - Francesca Spataro
- Institute of Polar Sciences - National Research Council (ISP-CNR), Rome, Italy
| | - Jasmin Rauseo
- Institute of Polar Sciences - National Research Council (ISP-CNR), Rome, Italy
| | - Luisa Patrolecco
- Institute of Polar Sciences - National Research Council (ISP-CNR), Rome, Italy
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Muñiz-González AB, Paoli F, Martínez-Guitarte JL, Lencioni V. Molecular biomarkers as tool for early warning by chlorpyrifos exposure on Alpine chironomids. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 290:118061. [PMID: 34523523 DOI: 10.1016/j.envpol.2021.118061] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 08/23/2021] [Accepted: 08/25/2021] [Indexed: 06/13/2023]
Abstract
Pesticides used in agriculture can be transported at a medium-high distance due to the drift effect, reaching even remote areas as mountain regions, glaciers, and snow cover. With the melting process, pesticides enter freshwater glacier ecosystems, becoming a threat to wildlife fauna, mainly dominated by Diptera Chironomidae. Chlorpyrifos (CPF), as one of the most commonly used pesticides in alpine vineyards and apple orchards, is frequently detected in icemelt waters. We selected as target species, larvae of the cold stenothermal chironomid Diamesa zernyi, collected in two glacier-fed streams (Presena and Amola) in the Italian Alps. Firstly, a de novo transcriptome was obtained, and secondly, a gene array was designed to study the molecular response of a wild population of D. zernyi exposed to three sub-lethal CPF concentrations corresponding to 1/100 LC10 (0.011 μg/L), 1/10 LC10 (0.11 μg/L), and LC10 (1.1 μg/L), for 24 h. The sub-organismal response was evaluated by Real-Time Polymerase Chain Reaction (RT-PCR), employing 40 genes related to essential metabolic routes as future candidates for biomarkers in wildlife chironomids. After 24 h, the endocrine system (E75, E93, EcR, and Met), detoxification response (GSTO3, GSTS1), and stress response (hsp75, hsp83, HYOU1) were altered. CPF seems to act as an endocrine disruptor and could lead to defective larval development, disrupted cellular homeostasis through heat shock proteins (HSPs) alteration (defective protein folding and mitochondrial functions), as well as oxidative damage (confirmed by increased GST expression). For the first time, molecular studies detected early alarm signals in wildlife in glacier environments. Our findings confirm the high environmental risk of CPF affecting aquatic insect metabolism and raise the level of concern about this pesticide in high altitude water bodies, generally considered pristine. Furthermore, this study emphasizes the incipient need to use non-model organisms for the evaluation of natural ecosystems. We also highlight the demand for research into new molecular biomarkers, and the importance of including molecular approaches in toxicology evaluations to detect the early adverse effects of pollutants.
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Affiliation(s)
- Ana-Belén Muñiz-González
- Biology and Toxicology Group, Dept. Physics, Mathematics and Fluids, UNED. Paseo Senda del Rey, 9, 28040, Madrid, Spain.
| | - Francesca Paoli
- Department of Invertebrate Zoology and Hydrobiology, MUSE-Museo delle Scienze, Corso del Lavoro e della Scienza 3, I-38122, Trento, Italy
| | - José-Luis Martínez-Guitarte
- Biology and Toxicology Group, Dept. Physics, Mathematics and Fluids, UNED. Paseo Senda del Rey, 9, 28040, Madrid, Spain
| | - Valeria Lencioni
- Department of Invertebrate Zoology and Hydrobiology, MUSE-Museo delle Scienze, Corso del Lavoro e della Scienza 3, I-38122, Trento, Italy
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Rizzi C, Villa S, Cuzzeri AS, Finizio A. Use of the Species Sensitivity Distribution Approach to Derive Ecological Threshold of Toxicological Concern (eco-TTC) for Pesticides. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:12078. [PMID: 34831835 PMCID: PMC8623465 DOI: 10.3390/ijerph182212078] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/11/2021] [Accepted: 11/11/2021] [Indexed: 11/16/2022]
Abstract
The species sensitivity distribution (SSD) calculates the hazardous concentration at which 5% of species (HC5) will be potentially affected. For many compounds, HC5 values are unavailable impeding the derivation of SSD curves. Through a detailed bibliographic survey, we selected HC5 values (from acute toxicity tests) for freshwater aquatic species and 129 pesticides. The statistical distribution and variability of the HC5 values within the chemical classes were evaluated. Insecticides are the most toxic compounds in the aquatic communities (HC5 = 1.4 × 10-3 µmol L-1), followed by herbicides (HC5 = 3.3 × 10-2 µmol L-1) and fungicides (HC5 = 7.8 µmol L-1). Subsequently, the specificity of the mode of action (MoA) of pesticides on freshwater aquatic communities was investigated by calculating the ratio between the estimated baseline toxicity for aquatic communities and the HC5 experimental values gathered from the literature. Moreover, we proposed and validated a scheme to derive the ecological thresholds of toxicological concern (eco-TTC) of pesticides for which data on their effects on aquatic communities are not available. We proposed eco-TTCs for different classes of insecticides, herbicides, and fungicides with a specific MoA, and three eco-TTCs for those chemicals with unavailable MoA. We consider the proposed approach and eco-TTC values useful for risk management purposes.
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Affiliation(s)
| | - Sara Villa
- Department of Earth and Environmental Sciences DISAT, University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milano, Italy; (C.R.); (A.S.C.); (A.F.)
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Marques MBL, Brunetti IA, Faleiros CA, da Cruz C, Iqbal HMN, Bilal M, Américo-Pinheiro JHP. Ecotoxicological Assessment and Environmental Risk of the Insecticide Chlorpyrifos for Aquatic Neotropical Indicators. WATER AIR AND SOIL POLLUTION 2021. [DOI: 10.1007/s11270-021-05369-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Brans KI, Almeida RA, Fajgenblat M. Genetic differentiation in pesticide resistance between urban and rural populations of a nontarget freshwater keystone interactor, Daphnia magna. Evol Appl 2021; 14:2541-2552. [PMID: 34745342 PMCID: PMC8549624 DOI: 10.1111/eva.13293] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 07/01/2021] [Accepted: 08/03/2021] [Indexed: 01/02/2023] Open
Abstract
There is growing evidence that urbanization drives adaptive evolution in response to thermal gradients. One such example is documented in the water flea Daphnia magna. However, organisms residing in urban lentic ecosystems are increasingly exposed to chemical pollutants such as pesticides through run-off and aerial transportation. The extent to which urbanization drives the evolution of pesticide resistance in aquatic organisms and whether this is impacted by warming and thermal adaptation remains limitedly studied. We performed a common garden rearing experiment using multiple clonal lineages originating from five replicated urban and rural D. magna populations, in which we implemented an acute toxicity test exposing neonates (<24h) to either a solvent control or the organophosphate pesticide chlorpyrifos. Pesticide exposures were performed at two temperatures (20°C vs. 24°C) to test for temperature-associated differences in urbanization-driven evolved pesticide resistance. We identified a strong overall effect of pesticide exposure on Daphnia survival probability (-72.8 percentage points). However, urban Daphnia genotypes showed higher survival probabilities compared to rural ones in the presence of chlorpyrifos (+29.7 percentage points). Our experiment did not reveal strong temperature x pesticide or temperature x pesticide x urbanization background effects on survival probability. The here observed evolution of resistance to an organophosphate pesticide is a first indication Daphnia likely also adapts to pesticide pollution in urban areas. Increased pesticide resistance could facilitate their population persistence in urban ponds, and feed back to ecosystem functions, such as top-down control of algae. In addition, adaptive evolution of nontarget organisms to pest control strategies and occupational pesticide use may modulate how pesticide applications affect genetic and species diversity in urban areas.
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Affiliation(s)
- Kristien I. Brans
- Laboratory of Aquatic Ecology, Evolution, and ConservationKU LeuvenLeuvenBelgium
| | - Rafaela A. Almeida
- Laboratory of Aquatic Ecology, Evolution, and ConservationKU LeuvenLeuvenBelgium
| | - Maxime Fajgenblat
- Laboratory of Aquatic Ecology, Evolution, and ConservationKU LeuvenLeuvenBelgium
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Moreira RA, de Araujo GS, Silva ARRG, Daam MA, Rocha O, Soares AMVM, Loureiro S. Effects of abamectin-based and difenoconazole-based formulations and their mixtures in Daphnia magna: a multiple endpoint approach. ECOTOXICOLOGY (LONDON, ENGLAND) 2020; 29:1486-1499. [PMID: 32388636 DOI: 10.1007/s10646-020-02218-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 04/23/2020] [Indexed: 06/11/2023]
Abstract
This study evaluated the toxicity of pesticide formulations Kraft® 36 EC (active ingredient-a.i. abamectin) and Score® 250 EC (a.i. difenoconazole), and their mixtures in Daphnia magna at different biological levels of organization. Survival, reproduction and biochemical markers (cholinesterase (ChE), catalase (CAT) and lipid peroxidation (LPO)) were some of the endpoints evaluated. Total proteins and lipids were also studied together with energy consumption (Ec). D. magna neonates were exposed for 96 h to Kraft (2, 4, and 6 ng a.i./L) and Score (12.5, 25, and 50 µg a.i./L) for the biochemical experiments, and for 15 days to abamectin (1-5 ng a.i./L) and to difenoconazole (3.12-50 µg a.i./L) to assess possible changes in reproduction. Exposures of organisms to both single compounds did not cause effects to antioxidant and detoxifying enzymes, except for LPO occurring at the highest concentration of difenoconazole tested. For ChE and CAT there was enzymatic induction in mixture treatments organisms, occurring at minor pesticides concentrations for CAT and at the two highest concentrations for ChE. There were no significant differences for total protein in D. magna but lipids showed an increase at the highest concentrations of pesticide mixture combinations. There was a significant increase of Ec in individuals of all treatments tested. In the chronic test, increased fecundity occurred for D. magna under difenoconazole exposures and mixtures. This study demonstrated that mixtures of these pesticides caused greater toxicity to D. magna than when tested individually, except for Ec. Therefore, effects of mixtures are very hard to predict only based on information from single compounds, which most possibly is the result of biological complexity and redundancy in response pathways, which need further experimentation to become better known.
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Affiliation(s)
- Raquel Aparecida Moreira
- NEEA/CRHEA/SHS, São Carlos Engineering School, University of São Paulo, Av. Trabalhador São Carlense, 400, São Carlos, 13.560-970, Brazil.
| | | | | | - Michiel Adriaan Daam
- CENSE, Department of Environmental Sciences and Engineering, Faculty of Sciences and Technology, New University of Lisbon, Quinta da Torre, 2829-516, Caparica, Portugal
| | - Odete Rocha
- Department of Ecology and Evolutionary Biology, Federal University of São Carlos, Rodovia Washington Luis, km 235, São Carlos, SP, 13565-905, Brazil
| | - Amadeu M V M Soares
- Department of Biology & CESAM, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Susana Loureiro
- Department of Biology & CESAM, University of Aveiro, 3810-193, Aveiro, Portugal
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Di Nica V, González ABM, Lencioni V, Villa S. Behavioural and biochemical alterations by chlorpyrifos in aquatic insects: an emerging environmental concern for pristine Alpine habitats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:30918-30926. [PMID: 31630352 DOI: 10.1007/s11356-019-06467-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 09/09/2019] [Indexed: 06/10/2023]
Abstract
This study aimed to assess how different concentrations of the insecticide chlorpyrifos (1.1, 5.24, 11, 52.4, 110, 262, 524 and 1100 ng L-1) affect the swimming behaviour of Diamesa zernyi larvae following exposure. A video tracking system was employed to analyse two swimming traits (total distance moved and average speed) of the larvae simultaneously after 3 days of exposure to the pesticide at 2 °C. The behavioural results were also interpreted according to biochemical responses to oxidative stress (OS) induced by chlorpyrifos, based on malondialdehyde (MDA) and protein carbonyl (PCC) content. Both distance and speed significantly decreased after 72 h of exposure to chlorpyrifos concentrations of ≥ 110 ng L-1, under which significant OS was detected as lipid peroxidation (level of MDA) and protein carbonylation (level of carbonyl). Analysis of altered swimming behaviour, along with MDA and carbonyl content, indicated that ≥ 110 ng L-1 contamination levels of the insecticide cause the organism to reallocate energy normally used for locomotor activity to repair cell damage, which might explain the strong impairment to locomotor performance. Locomotor performance is an ecologically relevant trait for elucidating the population dynamics of key species, with disturbance to this trait having long-term negative impacts on population and community structure. Therefore, chlorpyrifos insecticides represent a serious ecological risk for mountain aquatic species based on the detrimental effects observed in the current study, as the tested concentrations were those at which the insecticide is found in many Alpine rivers of Italy.
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Affiliation(s)
- Valeria Di Nica
- Department of Earth and Environmental Sciences - DISAT, University of Milano - Bicocca, Milan, Italy
| | - Ana Belén Muñiz González
- Department of Invertebrate Zoology and Hydrobiology, MUSE-Museo delle Scienze, Corso del Lavoro e della Scienza, 3, 38122, Trento, Italy
- Group of Biology and Environmental Toxicology, Department Physics, Mathematics and Fluids, Science Faculty, National Distance Education University (UNED), Madrid, Spain
| | - Valeria Lencioni
- Department of Invertebrate Zoology and Hydrobiology, MUSE-Museo delle Scienze, Corso del Lavoro e della Scienza, 3, 38122, Trento, Italy.
| | - Sara Villa
- Department of Earth and Environmental Sciences - DISAT, University of Milano - Bicocca, Milan, Italy
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Kovacevic V, Simpson AJ, Simpson MJ. Metabolic profiling of Daphnia magna exposure to a mixture of hydrophobic organic contaminants in the presence of dissolved organic matter. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 688:1252-1262. [PMID: 31726555 DOI: 10.1016/j.scitotenv.2019.06.222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 06/11/2019] [Accepted: 06/14/2019] [Indexed: 06/10/2023]
Abstract
The hydrophobic organic contaminants triclosan, triphenyl phosphate (TPhP) and diazinon sorb to dissolved organic matter (DOM) and this may alter their bioavailability and toxicity. 1H nuclear magnetic resonance (NMR)-based metabolomics was used to investigate how DOM at 1 and 5 mg organic carbon/L may alter the metabolome of Daphnia magna from exposure to equitoxic mixtures of triclosan, TPhP and diazinon. These contaminants have different modes of action toward D. magna. The contaminant concentrations in each mixture were an equal percentage of their lethal concentration to 50% of the population (LC50) values, which equates to 1250 μg/L TPhP, 330 μg/L triclosan and 0.9 μg/L diazinon. The ternary mixture exposure at 1% LC50 values did not alter the D. magna metabolome. Contaminant mixture exposures at 5%, 10%, and 15% LC50 values decreased glucose, serine and glycine concentrations and increased asparagine and threonine concentrations, suggesting disruptions in energy metabolism. The contaminant mixture had a unique mode of action in D. magna and DOM at 1 and 5 mg organic carbon/L did not change this mode of action. The estimated sorption of triclosan, TPhP or diazinon to DOM at 1 or 5 mg organic carbon/L in this experimental design was calculated to be <50% for each contaminant. This suggests that the mode of action of the contaminant mixture was not altered by DOM because the two environmentally relevant concentrations of DOM may have not substantially altered contaminant bioavailability. Our results indicate that DOM may not inevitably mitigate or alter the sub-lethal toxicity of a mixture of hydrophobic organic contaminants. This indicates the complexity of predicting the molecular-level toxicity of environmental mixtures. For adequate risk assessment of freshwater ecosystems, it is vital to account for the combined sub-lethal toxicity of an environmental mixture of contaminants.
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Affiliation(s)
- Vera Kovacevic
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada; Environmental NMR Centre, Department of Physical and Environmental Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON M1C 1A4, Canada
| | - André J Simpson
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada; Environmental NMR Centre, Department of Physical and Environmental Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON M1C 1A4, Canada
| | - Myrna J Simpson
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada; Environmental NMR Centre, Department of Physical and Environmental Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON M1C 1A4, Canada.
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Negro CL, Iturburu FG, Mendieta J, Menone ML, Collins P. Are Oxidative Stress Biomarkers Sensitive to Environmental Concentrations of Chlorpyrifos Exposed to the Freshwater Crab, Zilchiopsis collastinensis (Decapoda; Trichodactylidae)? BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2019; 103:405-410. [PMID: 31203409 DOI: 10.1007/s00128-019-02643-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Accepted: 05/31/2019] [Indexed: 05/04/2023]
Abstract
Global trends in pesticide use can increase aquatic pollution and affect resident fisheries. Crabs exposed to organophosphate pesticides, such as chlorpyrifos, may increase production of reactive oxygen species (ROS), affecting the pro-oxidant/antioxidant balance. Zichiopsis collastinensis crabs were exposed to environmentally relevant concentrations of chlorpyrifos (0.1 and 0.5 µg L-1). Effects on the oxidative stress enzymes catalase, superoxide dismutase, glutathione S-transferases, glutathione reductase, and on thiobarbituric acid reactive substances and hydrogen peroxide concentrations were evaluated at four intervals during 96 h exposures. Exposures caused decreased GST activity and increased H2O2 levels in gills. There were modifications of GST, CAT and SOD activities in the hepatopancreas after 12 h of exposure, and an increase of H2O2 levels at every exposure interval observed. The present study proved that chlorpyrifos lead to oxidative stress in Z. collastinensis. However other enzymatic/non-enzymatic responses should be further investigated in order to be included as part of a battery of biomarkers, together with H2O2 levels, which is a parameter highly recommended to be taken into account.
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Affiliation(s)
- C L Negro
- INALI (CONICET-UNL), Ciudad Universitaria, 3000, Santa Fe, Argentina.
- ESS (FBCB-UNL), Ciudad Universitaria, 3000, Santa Fe, Argentina.
| | - F G Iturburu
- IIMyC (UNMdP-CONICET), Funes 3350, 7600, Mar del Plata, Argentina
| | - J Mendieta
- IIB (UNMdP-CONICET), Funes 3250, 7600, Mar del Plata, Argentina
| | - M L Menone
- IIMyC (UNMdP-CONICET), Funes 3350, 7600, Mar del Plata, Argentina
| | - P Collins
- INALI (CONICET-UNL), Ciudad Universitaria, 3000, Santa Fe, Argentina
- ESS (FBCB-UNL), Ciudad Universitaria, 3000, Santa Fe, Argentina
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17
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Simão FCP, Martínez-Jerónimo F, Blasco V, Moreno F, Porta JM, Pestana JLT, Soares AMVM, Raldúa D, Barata C. Using a new high-throughput video-tracking platform to assess behavioural changes in Daphnia magna exposed to neuro-active drugs. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 662:160-167. [PMID: 30690351 DOI: 10.1016/j.scitotenv.2019.01.187] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 01/14/2019] [Accepted: 01/15/2019] [Indexed: 06/09/2023]
Abstract
Recent advances in imaging allow to monitor in real time the behaviour of individuals under a given stress. Light is a common stressor that alters the behaviour of fish larvae and many aquatic invertebrate species. The water flea Daphnia magna exhibits a vertical negative phototaxis, swimming against light trying to avoid fish predation. The aim of this study was to develop a high-throughput image analysis system to study changes in the vertical negative phototaxis of D. magna first reproductive adult females exposed to 0.1 and 1 μg/L of four neuro-active drugs: diazepam, fluoxetine, propranolol and carbamazepine. Experiments were conducted using a custom designed experimental chamber containing four independent arenas and infrared illumination. The apical-located visible light and the GigE camera located in front of the arenas were controlled by the Ethovision XT 11.5 sofware (Noldus Information Technology, Leesburg, VA). Total distance moved, time spent per zone (bottom vs upper zones) and distance among individuals were analyzed in dark and light conditions, and the effect of different intensities of the apical-located visible light was also investigated. Results indicated that light intensity increased the locomotor activity and low light intensities allowed to better discriminate individual responses to the studied drugs. The four tested drugs decreased the response of exposed organisms to light: individuals moved less, were closer to the bottom and at low light intensities were closer each other. At high light intensities, however, exposed individuals were less aggregated. Propranolol, carbamazepine and fluoxetine induced the most severe behavioural effects. The tested drugs at environmental relevant concentrations altered locomotor activity, geotaxis, phototaxis and aggregation in D. magna individuals in the lab. Therefore the new image analysis system presented here was proven to be sensitive and versatile enough to detect changes in diel vertical migration across light intensities and low concentration levels of neuro-active drugs.
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Affiliation(s)
- Fátima C P Simão
- Centre for Environmental and Marine studies (CESAM), Department of Biology, University of Aveiro, Portugal; Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA), Spanish Research Council (IDAEA, CSIC), Jordi Girona 18, 08034 Barcelona, Spain
| | - Fernando Martínez-Jerónimo
- Instituto Politecnico Nacional, Escuela Nacional de Ciencias Biológicas,-Lab. de Hidrobiología Experimental, Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico
| | - Victor Blasco
- Institut de Robòtica i Informàtica Industrial (CSIC-UPC), Barcelona, Spain
| | - Francesc Moreno
- Institut de Robòtica i Informàtica Industrial (CSIC-UPC), Barcelona, Spain
| | - Josep M Porta
- Institut de Robòtica i Informàtica Industrial (CSIC-UPC), Barcelona, Spain
| | - João L T Pestana
- Centre for Environmental and Marine studies (CESAM), Department of Biology, University of Aveiro, Portugal
| | - Amadeu M V M Soares
- Centre for Environmental and Marine studies (CESAM), Department of Biology, University of Aveiro, Portugal
| | - Demetrio Raldúa
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA), Spanish Research Council (IDAEA, CSIC), Jordi Girona 18, 08034 Barcelona, Spain
| | - Carlos Barata
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA), Spanish Research Council (IDAEA, CSIC), Jordi Girona 18, 08034 Barcelona, Spain.
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