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Mitchell HC, Warne MSJ, Mann RM, King OC, Turner RDR. Ecotoxicity threshold values for 4-hydroxychlorothalonil, carbendazim, dimethoate and methoxyfenozide in fresh and marine waters: Part 1. Derivation of threshold values. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 948:174578. [PMID: 38981541 DOI: 10.1016/j.scitotenv.2024.174578] [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: 05/13/2024] [Revised: 07/02/2024] [Accepted: 07/05/2024] [Indexed: 07/11/2024]
Abstract
Pesticide active ingredients are frequently detected in the rivers, creeks, wetlands, estuaries, and marine waters of the Great Barrier Reef (GBR) region and are one of the main contributors to poor water quality. Pesticide concentrations detected in the environment through water quality monitoring programs can be compared against estimates of ecologically "safe" concentrations (i.e., water quality guidelines) to assess the potential hazard and risk posed to aquatic ecosystems. Water quality guidelines are also required to estimate the aquatic risk posed by pesticide mixtures, which is used for the Reef 2050 Water Quality Improvement Plan pesticide target. Seventy-four pesticide active ingredients and their degradates are frequently detected in GBR catchment waterways, however many do not have water quality guidelines in the Australian and New Zealand Guidelines for Fresh and Marine Water Quality. The current study derives ecotoxicity threshold values (ETVs) as unendorsed guideline values for active ingredients in two fungicides (4-hydroxychlorothalonil (fungicide degradate) and carbendazim) and two insecticides (dimethoate and methoxyfenozide) that are commonly detected in GBR catchment waterways. The proposed ETVs have been derived using species sensitivity distributions, as recommended in the Australian and New Zealand nationally endorsed method for deriving water quality guidelines for aquatic ecosystem protection. Four ETVs were derived for each chemical with values that should theoretically protect 99, 95, 90 and 80 % of species (i.e., PC99, PC95, PC90, PC80, respectively). The PC99 and PC95 values for 4-hydroxychlorothalonil, carbendazim, dimethoate and methoxyfenozide were 0.49 μg/L and 4 μg/L, 0.029 μg/L and 0.45 μg/L, 0.11 μg/L and 5.8 μg/L and 0.19 μg/L and 2 μg/L, respectively. The ETVs will be used in an ecological hazard and risk assessment across GBR waterways in part two of this study. The ETVs can also be used to assess potential risk across Australia and internationally where monitoring data are available.
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Affiliation(s)
- Hannah C Mitchell
- Reef Catchments Science Partnership, School of the Environment, The University of Queensland, Brisbane, Queensland 4072, Australia.
| | - Michael St J Warne
- Reef Catchments Science Partnership, School of the Environment, The University of Queensland, Brisbane, Queensland 4072, Australia; Water Quality and Investigations, Queensland Department of Environment, Science and Innovation, Brisbane, Queensland 4102, Australia
| | - Reinier M Mann
- Water Quality and Investigations, Queensland Department of Environment, Science and Innovation, Brisbane, Queensland 4102, Australia; Sustainable Minerals Institute, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Olivia C King
- Environment Protection Science Branch, New South Wales Department of Climate Change, Energy, the Environment and Water, Sydney, New South Wales 2124, Australia
| | - Ryan D R Turner
- Reef Catchments Science Partnership, School of the Environment, The University of Queensland, Brisbane, Queensland 4072, Australia; Water Quality and Investigations, Queensland Department of Environment, Science and Innovation, Brisbane, Queensland 4102, Australia
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2
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Ewere EE, White S, Mauleon R, Benkendorff K. Soil microbial communities and degradation of pesticides in greenhouse effluent through a woodchip bioreactor. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 359:124561. [PMID: 39019308 DOI: 10.1016/j.envpol.2024.124561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 07/05/2024] [Accepted: 07/14/2024] [Indexed: 07/19/2024]
Abstract
Pesticides, including insecticides and fungicides, are major contaminants in the effluent from intensive agricultural systems, such as greenhouses. Because of their constant use and persistence, some pesticides can accumulate in soil and/or run off into adjacent waterways. Microbial communities in soil can degrade some pesticides, and bioreactors with enhanced microbial communities have the potential to facilitate decontamination before the effluent is released into the environment. In this study, we sampled the soil along a gradient from immediately below greenhouses, into, through and below a bioreactor. Multi-analyte pesticide screening was undertaken along with shotgun metagenomic sequencing, to assess microbial community taxonomic profiles and metabolic pathway responses for functional analysis. Two insecticides (imidacloprid and fipronil) and nine fungicides were identified in the soil samples, with a general decrease in most pesticides with increasing distance from the greenhouses. Diversity indexes of taxonomic profiles show changes in the microbial community along the gradient. In particular, microbial communities were significantly different in the bioreactor, with lower Shannon diversity compared to immediately below the greenhouses, in the channels leading into the bioreactor and further downstream. Metabolic pathway analysis revealed significant changes in a wide range of core housekeeping genes such as protein/amino acid synthesis and lipid/fatty acid biosynthesis among the sampling sites. The result demonstrates that the composition and potential functional pathways of the microbial community shifted towards an increased tendency for phytol and contaminant degradation in the bioreactor, facilitated by high organic matter content. This highlights the potential to use enhanced microbial communities within bioreactors to reduce contamination by some pesticides in sediment receiving run-off from greenhouses.
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Affiliation(s)
- Endurance E Ewere
- National Marine Science Centre, Southern Cross University, Coffs Harbour, NSW, 2450, Australia
| | - Shane White
- National Marine Science Centre, Southern Cross University, Coffs Harbour, NSW, 2450, Australia
| | - Ramil Mauleon
- Faculty of Science and Engineering, Southern Cross University, East Lismore, NSW, 2480, Australia
| | - Kirsten Benkendorff
- National Marine Science Centre, Southern Cross University, Coffs Harbour, NSW, 2450, Australia.
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3
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Xu Z, Xie L, Li H, You J. Sensitivity Variations in Developmental Toxicity of Imidacloprid to Zebrafish Embryos at Different Neurodevelopmental Stages. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2024. [PMID: 39185675 DOI: 10.1002/etc.5986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 07/21/2024] [Accepted: 07/26/2024] [Indexed: 08/27/2024]
Abstract
Neonicotinoids are ubiquitous in global surface waters and pose a significant risk to aquatic organisms. However, information is lacking on the variations in sensitivity of organisms at different developmental stages to the neurotoxic neonicotinoids. We established a spectrum of toxicity to zebrafish embryos at four neurodevelopmental stages (1, 3, 6, and 8 h post fertilization [hpf]) and dechorionated embryos at 6 hpf based on external and internal exposure to imidacloprid as a representative neonicotinoid. Embryos at the gastrula stage (6 and 8 hpf) were more sensitive to imidacloprid than embryos at earlier developmental stages. Dechorionated embryos were more sensitive to imidacloprid than embryos with a chorion, suggesting that the chorion offers protection against pollutants. Nine sublethal effects were induced by imidacloprid exposure, among which uninflated swim bladder (USB) was the most sensitive. Water depth and air availability in the exposure chambers were critical factors influencing the occurrence of USB in zebrafish larvae. Internal residues of metabolites accounted for <10% of imidacloprid, indicating that imidacloprid was metabolized in a limited fashion in the embryos. In addition, acute toxicity of the main metabolite 5-hydroxy-imidacloprid was significantly lower than that of imidacloprid, indicating that the observed toxicity in embryos exposed to imidacloprid was mainly induced by the parent compound. Our research offers a fresh perspective on choosing the initial exposure time in zebrafish embryo toxicity tests, particularly for neurotoxicants. Environ Toxicol Chem 2024;00:1-11. © 2024 SETAC.
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Affiliation(s)
- Zewei Xu
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou, China
| | - Lingzhi Xie
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou, China
| | - Huizhen Li
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou, China
| | - Jing You
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou, China
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4
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Leyva-Morales JB, Bastidas-Bastidas PDJ, Salvatierra-Stamp VDC, González-Márquez LC, Davizon YA, Márquez-Pacheco H, Amillano-Cisneros JM, Cruz-Acevedo E, Amézquita-López BA, Romo Gómez C, De la Torre Espinosa ZY, Rodríguez-Aguilar BA. Temporal distribution and ecological risk assessment for pesticides in water from the north-central coastal zone of Sinaloa, Mexico. Heliyon 2024; 10:e35207. [PMID: 39170137 PMCID: PMC11337721 DOI: 10.1016/j.heliyon.2024.e35207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 07/23/2024] [Accepted: 07/24/2024] [Indexed: 08/23/2024] Open
Abstract
Water contamination with pesticides is one of the major pollution problems in northwestern Mexico, and this is due to the extensive use of pesticides in agriculture. In this research, water samples of ten sampling sites (fishing grounds, beaches, and both) were analyzed in the search for 28 pesticides (organochlorines, organophosphates, pyrethroids, carbamates, among other chemical classes), supplemented with a calculation of the resulting potential environmental risk. Pesticides were separated from the matrix by liquid-liquid extraction and quantified by gas chromatography coupled to electron micro-capture (organohalogenated) and pulsed flame photometric detectors (organophosphates). In addition, the ecotoxicological risk of pesticides in algae, invertebrates, and fish was assessed, based on seawater pesticide concentrations using the Risk Quotient (RQ) and Toxic Units (TU) approach. The results showed 18 pesticides identified in the analyzed samples, where cypermethrin and chlorpyrifos were identified with the maximum concentrations of 1.223 and 0.994 μg L-1, respectively. In addition, these two pesticides have been associated with acute toxic effects on algae, invertebrates, and fish. It is important to pay particular attention to the search for long-term alternatives to the use of chlorpyrifos and cypermethrin due to their high detection rates and the risks associated with their toxic properties. However, the adoption of alternative measures to synthetic pesticide control should be a priority, moving towards sustainable practices such as the use of biopesticides, crop rotation and polycultures.
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Affiliation(s)
- José Belisario Leyva-Morales
- Área Académica de Química, Instituto de Ciencias Básicas e Ingeniería, Universidad Autónoma del Estado de Hidalgo, Carr. Pachuca-Tulancingo km. 4.5, Mineral de la Reforma, 42184, Hidalgo, Mexico
| | - Pedro de Jesús Bastidas-Bastidas
- Centro de Investigación en Alimentación y Desarrollo, A.C. Carretera a Eldorado km. 5.5 Campo el Diez, Culiacán, C.P. 80396, Sinaloa, Mexico
| | | | - Luis Carlos González-Márquez
- Departamento de Ingeniería y Tecnología-Ingeniería Ambiental, Universidad Autónoma de Occidente, Unidad Regional Guasave, Av Universidad S/N, Fraccionamiento Villa Universidad, Guasave, C.P. 81048, Sinaloa, Mexico
| | - Yasser A. Davizon
- Instituto Tecnológico de Ciudad Juárez, Chihuahua, División de Estudios de Posgrado e Investigación, Av. Tecnológico No. 1340, Fracc. El Crucero, Ciudad Juárez, C.P. 32500, Chihuahua, Mexico
- Tecnológico Nacional de México/ IT de Los Mochis, Juan de Dios, Bátiz y 20 de Noviembre, Los Mochis, C.P. 81259, Sinaloa, Mexico
| | - Henri Márquez-Pacheco
- Ingeniería Agroindustrial, Universidad Politécnica del Mar y la Sierra, Carretera a Potrerillos del Norote km. 3, La Cruz, Elota, C.P. 82700, Sinaloa, Mexico
| | - Jesús Mateo Amillano-Cisneros
- Ingeniería en Agrotecnología, Universidad Politécnica del Mar y la Sierra, Carretera a Potrerillos del Norote Km.3, La Cruz, Elota, C.P. 82700, Sinaloa, Mexico
| | - Edgar Cruz-Acevedo
- Departamento de Ciencias Exactas y Desarrollo Humano, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, Ciudad Universitaria, San Nicolás de los Garza, C.P. 66450, Nuevo León, Mexico
| | - Bianca Anabel Amézquita-López
- Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, Josefa Ortiz de Domínguez y Blvd. de las Américas S/N, Ciudad Universitaria, Culiacán, C.P. 80013, Sinaloa, Mexico
| | - Claudia Romo Gómez
- Área Académica de Química, Instituto de Ciencias Básicas e Ingeniería, Universidad Autónoma del Estado de Hidalgo, Carr. Pachuca-Tulancingo km. 4.5, Mineral de la Reforma, 42184, Hidalgo, Mexico
| | - Zamaria Yoselin De la Torre Espinosa
- Departamento de Salud-Licenciatura en Ciencias Biomédicas, Universidad Autónoma de Occidente, Unidad Regional Guasave, Av. Universidad S/N, Fraccionamiento Villa Universidad, Guasave, 81048, Sinaloa, Mexico
| | - Brian Arturo Rodríguez-Aguilar
- Facultad de Ciencias Químicas, Universidad de Colima, km 9 carretera Colima-Coquimatlán, Coquimatlán, C.P. 28400, Colima, Mexico
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5
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Zhang X, Cao Y, Cao J, Feng X, Zhang Z, Li Q, Yan Y. Neonicotinoid insecticides in waters of the northern Jiangsu segment of the Beijing-Hangzhou Grand Canal: Environmental and health implications. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 923:171455. [PMID: 38438029 DOI: 10.1016/j.scitotenv.2024.171455] [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: 11/28/2023] [Revised: 02/18/2024] [Accepted: 03/01/2024] [Indexed: 03/06/2024]
Abstract
Neonicotinoid (NEO) insecticides have been frequently detected in natural aquatic environments. Nevertheless, the distribution of NEOs in artificial environments is not clear. The Beijing-Hangzhou Grand Canal is the longest canal in the world. The northern Jiangsu segment of the Grand Canal was selected to study the spatiotemporal variation and source of eight NEOs in the canal water and assess their ecological and health risks. The total NEO concentration in the canal water was 12-289 ng L-1 in the dry season and 18-373 ng L-1 in the wet season, which were within the concentration range in other 11 natural rivers worldwide. The average total NEO concentrations were not statistically different between the seasons; only the concentrations of imidaclothiz, thiacloprid (THI), acetamiprid, and dinotefuran were different. At city scale, the total NEO concentration in the dry season showed a decreasing trend along the water flow from Xuzhou City to Yangzhou City. The total NEO concentrations were found to be positively correlated with the sown area of farm crops and the rural labour force, indicating the agricultural influence on the spatial distribution of NEO concentrations. In the wet season, relatively high NEO concentrations were distributed in downstream sites under the influence of artificial regulation. The primary contributor to the NEO inputs into the canal was the nonpoint source in the dry and wet seasons, with a relative contribution of 68 %. THI, imidacloprid, clothianidin and thiamethoxan would produce chronic ecological risks in both seasons. Further consideration needs to be given to the above four NEOs and NEO mixtures. The human health risks that NEOs posed by drinking water were assessed based on the chronic daily intake (CDI). The maximum CDI for adults and children was lower than the reference doses. This suggested public health would not be at risk from canal water consumption.
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Affiliation(s)
- Xiaoxin Zhang
- Jiangsu Engineering Laboratory for Environment Functional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an 223300, China
| | - Yuanxin Cao
- Jiangsu Engineering Laboratory for Environment Functional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an 223300, China.
| | - Jiachen Cao
- Jiangsu Engineering Laboratory for Environment Functional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an 223300, China
| | - Xiao Feng
- Jiangsu Engineering Laboratory for Environment Functional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an 223300, China
| | - Zhijie Zhang
- Jiangsu Engineering Laboratory for Environment Functional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an 223300, China
| | - Qiao Li
- Jiangsu Engineering Laboratory for Environment Functional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an 223300, China
| | - Yubo Yan
- Jiangsu Engineering Laboratory for Environment Functional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an 223300, China
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6
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Neale PA, Neelamraju C, Warne MSJ. Derivation of species sensitivity distributions and ecotoxicity threshold values for 66 pesticide active ingredients and the hazard and risk they pose to freshwater waterways that discharge to the Great Barrier Reef, Australia. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 920:170988. [PMID: 38365043 DOI: 10.1016/j.scitotenv.2024.170988] [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: 12/21/2023] [Revised: 01/31/2024] [Accepted: 02/13/2024] [Indexed: 02/18/2024]
Abstract
Pesticide active ingredients (PAIs) are one of the main contributors affecting water quality in the Great Barrier Reef Catchment Area (GBRCA). While an extensive list of pesticides is monitored in the GBRCA, only a limited number have water quality guideline values (WQGs), meaning it is not possible to know whether these PAIs are present at concentrations that may pose a hazard to the aquatic environment. In the current study, we derived 66 ecotoxicity threshold values (ETVs) for PAIs, the equivalent of WQGs, with a focus on PAIs applied to sugar cane. The hazard posed by PAIs monitored as part of the Great Barrier Reef Catchment Loads Monitoring Program (GBRCLMP) was assessed by comparing the derived ETVs with monitoring data from 2016/2017 to 2021/2022. The derived ETVs included herbicides, insecticides and fungicides, with the values that should protect 99 or 95 % of aquatic species (PC99 or PC95) spanning nine orders of magnitude. The concentrations of 10 PAIs exceeded their respective ETVs, giving a hazard quotient (HQ) >1. Of particular concern were insecticides chlorpyrifos, diazinon and methomyl, which have maximum HQ values >10. However, joint probability plots indicated that the PAIs generally pose a low risk to the aquatic environment, with most samples below the limit of reporting. As PAIs are predominantly found in mixtures in the GBRCA, the hazard posed by PAI mixtures was assessed by summing all individual HQ values in a sample for all PAIs with an ETV or WQG. On average, the insecticide active ingredient imidacloprid and herbicide active ingredients metolachlor, metsulfuron methyl, diuron and imazepic were the drivers of combined mixture hazard. Methomyl was an important contributor at some sites, suggesting that this pesticide should be considered for inclusion in any future PAI mixture hazard and/or risk assessment of the GBRCA.
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Affiliation(s)
- P A Neale
- Reef Catchments Science Partnership, School of the Environment, University of Queensland, Brisbane, Queensland 4108, Australia
| | - C Neelamraju
- Reef Catchments Science Partnership, School of the Environment, University of Queensland, Brisbane, Queensland 4108, Australia; Water Quality and Investigations, Environmental Monitoring and Assessment Science, Science Delivery, Department of Environment, Science and Innovation, Brisbane, Queensland 4102, Australia
| | - M St J Warne
- Reef Catchments Science Partnership, School of the Environment, University of Queensland, Brisbane, Queensland 4108, Australia; Water Quality and Investigations, Environmental Monitoring and Assessment Science, Science Delivery, Department of Environment, Science and Innovation, Brisbane, Queensland 4102, Australia; Centre for Agroecology, Water and Resilience, Coventry University, Coventry, United Kingdom.
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7
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Hou J, Hu C, Yang L, Wang X. Aquatic ecological risk assessment of imidacloprid and thiacloprid in an urban river of Qingdao, China. MARINE POLLUTION BULLETIN 2024; 199:116013. [PMID: 38183835 DOI: 10.1016/j.marpolbul.2023.116013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/27/2023] [Accepted: 12/27/2023] [Indexed: 01/08/2024]
Abstract
Imidacloprid and thiacloprid, two neonicotinoid insecticides that are extensively used in urban areas, are potentially toxic to non-target aquatic organisms. In this study, the concentrations of imidacloprid and thiacloprid in surface runoff after rainfall were 20.79-43.77 ng/L and 25.13-63.84 ng/L, respectively, whereas the levels for the Licun River were 10.78-41.70 ng/L and 2.66-39.68 ng/L, respectively. The acute and chronic criteria for imidacloprid and thiacloprid are 0.865, 0.006, 0.83, and 0.012 μg/L, respectively. Tiered ecological risk assessments revealed the chronic ecological risks of these micropollutants to local aquatic species. There was a moderate chronic toxicity risk associated with imidacloprid and thiacloprid in the Licun River, and the joint probability curves showed a probability of chronic ecological risk to 5 % of the aquatic organisms at 68 %-97 %. The results provide evidence of urban surface runoff transporting micropollutants from surface into rivers and estuaries, highlighting the ecological risks to aquatic ecosystems.
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Affiliation(s)
- Jinlong Hou
- School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Changqin Hu
- School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Lei Yang
- Key Laboratory of Eco-Environmental Geochemistry of Ministry of Natural Resources, National Research Center for Geoanalysis, Beijing 100037, China; School of Environment, Tsinghua University, Beijing 100084, China.
| | - Xiaocui Wang
- School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China.
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Duchet C, Hou F, Sinclair CA, Tian Z, Kraft A, Kolar V, Kolodziej EP, McIntyre JK, Stark JD. Neonicotinoid mixture alters trophic interactions in a freshwater aquatic invertebrate community. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 897:165419. [PMID: 37429477 DOI: 10.1016/j.scitotenv.2023.165419] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 06/17/2023] [Accepted: 07/07/2023] [Indexed: 07/12/2023]
Abstract
Neonicotinoids are increasingly and widely used systemic insecticides in agriculture, residential applications, and elsewhere. These pesticides can sometimes occur in small water bodies in exceptionally high concentrations, leading to downstream non-target aquatic toxicity. Although insects appear to be the most sensitive group to neonicotinoids, other aquatic invertebrates may also be affected. Most existing studies focus on single-insecticide exposure and very little is known concerning the impact of neonicotinoid mixtures on aquatic invertebrates at the community level. To address this data gap and explore community-level effects, we performed an outdoor mesocosm experiment that tested the effect of a mixture of three common neonicotinoids (formulated imidacloprid, clothianidin and thiamethoxam) on an aquatic invertebrate community. Exposure to the neonicotinoid mixture induced a top-down cascading effect on insect predators and zooplankton, ultimately increasing phytoplankton. Our results highlight complexities of mixture toxicity occurring in the environment that may be underestimated with traditional mono-specific toxicological approaches.
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Affiliation(s)
- Claire Duchet
- Puyallup Research & Extension Center, Washington State University, Puyallup, WA 98371, USA; Institute of Entomology, Biology Centre of the Czech Academy of Sciences, Branišovská 31, CZ-37005 České Budějovice, Czech Republic; Department of Ecosystem Biology, Faculty of Science, University of South Bohemia, Branišovská 1760, CZ-37005 České Budějovice, Czech Republic.
| | - Fan Hou
- Center for Urban Waters, Tacoma, WA 98421, USA; Department of Civil and Environmental Engineering, University of Washington, Seattle, WA 98195, USA
| | - Cailin A Sinclair
- Puyallup Research & Extension Center, Washington State University, Puyallup, WA 98371, USA
| | - Zhenyu Tian
- Center for Urban Waters, Tacoma, WA 98421, USA; Interdisciplinary Arts and Sciences, University of Washington Tacoma, Tacoma, WA 98421, USA
| | - Alyssa Kraft
- Puyallup Research & Extension Center, Washington State University, Puyallup, WA 98371, USA
| | - Vojtech Kolar
- Institute of Entomology, Biology Centre of the Czech Academy of Sciences, Branišovská 31, CZ-37005 České Budějovice, Czech Republic; Department of Ecosystem Biology, Faculty of Science, University of South Bohemia, Branišovská 1760, CZ-37005 České Budějovice, Czech Republic
| | - Edward P Kolodziej
- Center for Urban Waters, Tacoma, WA 98421, USA; Department of Civil and Environmental Engineering, University of Washington, Seattle, WA 98195, USA; Interdisciplinary Arts and Sciences, University of Washington Tacoma, Tacoma, WA 98421, USA
| | - Jenifer K McIntyre
- Puyallup Research & Extension Center, Washington State University, Puyallup, WA 98371, USA
| | - John D Stark
- Puyallup Research & Extension Center, Washington State University, Puyallup, WA 98371, USA
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Benthotage C, Cole V, Schulz KG, Benkendorff K. Bioaccumulation of estuarine pollutants in leaf oysters (Isognomon ephippium) on the mid-north coast, New South Wales, Australia. MARINE ENVIRONMENTAL RESEARCH 2023; 189:106065. [PMID: 37352823 DOI: 10.1016/j.marenvres.2023.106065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 06/14/2023] [Accepted: 06/15/2023] [Indexed: 06/25/2023]
Abstract
Filter feeding bivalves are useful bioindicators for the detection of biologically available pollutants. We investigated trace metals, metalloids, and pesticides in leaf oyster (Isognomon ephippium) soft tissue and shells and compared them to sediment in five estuaries in northern New South Wales, Australia. Concentrations of Pb, Cr, Mn, Ni, Fe and Al were higher in sediments, whereas Zn, Cd, Ag, Hg, Se and As bioaccumulated in the soft tissue. The amount of Cu, Hg and Ni in the sediment from Tweed and Richmond River estuaries exceeded the Australian national sediment quality guideline values. Only one pesticide, atrazine, was detected in leaf oyster soft tissue. Combinations of six elements in the soft tissue were the best predictors of oyster condition index and shell size, whereas sediment contaminants showed weak relationships. Overall, the bioaccumulation of metals and metalloids increases with leaf oyster size and reduces leaf oyster condition, suggesting these large bivalves are useful bioindicators for pollution in estuarine environments.
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Affiliation(s)
- Chamara Benthotage
- Faculty of Science and Engineering, Southern Cross University, Military Road, East Lismore, NSW, 2480, Australia
| | - Victoria Cole
- Faculty of Science and Engineering, Southern Cross University, Military Road, East Lismore, NSW, 2480, Australia; Department of Primary Industries Fisheries, Port Stephens Fisheries Institute, Taylors Beach Road, Taylors Beach, NSW, 2316, Australia
| | - Kai G Schulz
- Centre for Coastal Biogeochemistry, Faculty of Science and Engineering, Southern Cross University, Military Road, East Lismore, NSW, 2480, Australia
| | - Kirsten Benkendorff
- Faculty of Science and Engineering, Southern Cross University, Military Road, East Lismore, NSW, 2480, Australia; National Marine Science Centre, Faculty of Science and Engineering, Southern Cross University, 2 Bay Drive, Coffs Harbour, NSW, 2450, Australia.
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10
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Liu S, Wang T, Lu J, Li Z. Seawater quality criteria derivation and ecological risk assessment for the neonicotinoid insecticide imidacloprid in China. MARINE POLLUTION BULLETIN 2023; 190:114871. [PMID: 37023546 DOI: 10.1016/j.marpolbul.2023.114871] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 03/16/2023] [Accepted: 03/21/2023] [Indexed: 06/19/2023]
Abstract
As a broad-spectrum nicotinoid insecticide, imidacloprid (IMI) has been frequently recorded in seawater environments. Water quality criteria (WQC) is the maximum concentration of chemicals, which will not pose harmful effects on aquatic species in the studied water body. Nevertheless, the WQC is not available for IMI in China, which hinders the risk assessment of this emerging pollutant. This study, therefore, aims to derive the WQC for IMI through the toxicity percentile rank (TPR) and species sensitivity distribution (SSD) methodology, and to assess its ecological risk in aquatic environments. Results showed that the recommended short-term water quality criterion (SWQC) and long-term criterion (LWQC) in seawater were derived as 0.8 μg/L and 0.056 μg/L, respectively. The ecological risk of IMI in seawater shows a wide range with hazard quotient (HQ) values of up to 11.4. The environmental monitoring, risk management and pollution control for IMI, therefore, warrant further study.
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Affiliation(s)
- Shuai Liu
- College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Teng Wang
- College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Jinyu Lu
- College of Environment, Nanjing University, Nanjing 210000, China
| | - Zhengyan Li
- College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China; Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China.
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Tang X, Chen M, Li M, Liu H, Tang H, Yang Y. Do differentially charged nanoplastics affect imidacloprid uptake, translocation, and metabolism in Chinese flowering cabbage? THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 871:161918. [PMID: 36736408 DOI: 10.1016/j.scitotenv.2023.161918] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 01/10/2023] [Accepted: 01/26/2023] [Indexed: 06/18/2023]
Abstract
Micro(nano)plastics are ubiquitous in the environment. Among the microplastics, imidacloprid (IMI) concentration has been increasing in some intensive agricultural regions, thus receiving increased attention. However, only a few studies have investigated the interaction of nanoplastics (polystyrene (PS)) and IMI in vegetable crops. We studied the effects of positively (PS-NH2) and negatively (PS-COOH) charged nanoplastics on the uptake, translocation, and degradation of IMI in Chinese flowering cabbage grown in Hoagland solution for 28 days. PS-NH2 co-exposure with IMI inhibited plant growth, resulting in decreased plant weight, height, and root length. Translocation of IMI from the roots to the shoots was significantly lower in the presence of PS-NH2, whereas PS-COOH accelerated the accumulation and translocation of IMI in plants, thus potentially affecting IMI metabolism in plants. Notably, IMI-NTG and 5-OH-IMI were the two dominant metabolites. PS-NH2 co-exposure with IMI induced significant oxidation stress and considerably affected the activities of superoxide dismutase (SOD) and peroxidase (POD), indicating that the antioxidant defense system was the main mechanism for reducing oxidative damage. Notably, both positively and negatively charged nanoplastics can accumulate in Chinese flowering cabbage. Plants in the PS-COOH alone treatment group had the highest concentration of nanoplastics in both roots and shoots. The accumulation of nanoplastics, IMI, and its metabolites in plants raises concerns about their combined potential toxicity because it compromises food safety.
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Affiliation(s)
- Xiaoyan Tang
- Key Laboratory of Land Resources Evaluation and Monitoring in Southwest, Ministry of Education, Sichuan Normal University, Chengdu 610068, China; Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Institute of Hydrobiology, Jinan university, Guangzhou 510632, China; College of Geography and Resources, Sichuan Normal University, Chengdu 610101, China.
| | - Manjia Chen
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Muzi Li
- College of Geography and Resources, Sichuan Normal University, Chengdu 610101, China
| | - Huanping Liu
- Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Institute of Hydrobiology, Jinan university, Guangzhou 510632, China
| | - Hao Tang
- Key Laboratory of Land Resources Evaluation and Monitoring in Southwest, Ministry of Education, Sichuan Normal University, Chengdu 610068, China; College of Geography and Resources, Sichuan Normal University, Chengdu 610101, China
| | - Yang Yang
- Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Institute of Hydrobiology, Jinan university, Guangzhou 510632, China.
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Zhu J, Ouyang W, Guo Z, Liu X, He M, Li Q, Liu H, Lin C. Occurrence, spatiotemporal dynamics, and ecological risk of fungicides in a reservoir-regulated basin. ENVIRONMENT INTERNATIONAL 2023; 171:107697. [PMID: 36535191 DOI: 10.1016/j.envint.2022.107697] [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: 09/26/2022] [Revised: 11/15/2022] [Accepted: 12/13/2022] [Indexed: 06/17/2023]
Abstract
As an indispensable type of pesticide, fungicides have been somewhat neglected compared to insecticides and herbicides. Heavy fungicide application in agricultural regions may generate downstream ecological concerns via in-stream transport, and the reservoir complicates the process. Monitoring fungicide exposure and exploring reservoir effect on fungicide transport is the key to develop the downstream strategies of agricultural diffusion pollution control. Here, we investigated the exposure, spatiotemporal dynamics, and ecological risk of fungicides in a reservoir-regulated agricultural basin, located in the middle of the Yangtze River Basin, China. Seven fungicides were preliminarily identified and exhibited high detection frequencies (>85 %) in subsequent quantification of water samples from three sampling activities. The total concentration of fungicides ranged from 2.47 to 560.29 ng/L, 28.35 to 274.69 ng/L, and 13.61 to 146.968 ng/L in April, September, and November, respectively. Overall, the contamination levels of fungicides were in the ascending order of April < November < September. The spatial distribution of fungicides was closely associated with the dense of cultivated land, supporting its agricultural source. Furthermore, the reservoir plays a retention role in fungicides, alleviating ecological pressure downstream during the water storage period. Yet, due to the alternation of "source" and "sink" function of the reservoir, the contribution of Zijiang River to the fungicide load in the Yangtze River Basin still needs further attention. Although there is no acute risk posed by fungicides, even in the high-exposure scenario, the chronic ecological risk could not be ignored. Agricultural intensive regions, coupled with the reservoir, provide rather substantial chronic ecological concerns. Carbendazim has been designated as a priority pollutant that contributes significantly to cumulative chronic risk. Thus, we emphasize strengthening the supervision of fungicides in surface water and rationally restricting the use of carbendazim in agricultural operations.
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Affiliation(s)
- Jing Zhu
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Wei Ouyang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China; Advanced Interdisciplinary Institute of Environment and Ecology, Beijing Normal University, Zhuhai, 519087, China.
| | - Zewei Guo
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Xitao Liu
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Mengchang He
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Qin Li
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Huiji Liu
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Chunye Lin
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
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