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Ijzerman MM, Raby M, Letwin NV, Kudla YM, Anderson JD, Atkinson BJ, Rooney RC, Sibley PK, Prosser RS. New insights into pesticide occurrence and multicompartmental monitoring strategies in stream ecosystems using periphyton and suspended sediment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 915:170144. [PMID: 38242468 DOI: 10.1016/j.scitotenv.2024.170144] [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: 09/29/2023] [Revised: 01/08/2024] [Accepted: 01/11/2024] [Indexed: 01/21/2024]
Abstract
Streams are susceptible to pesticide pollutants which are transported outside of the intended area of application from surrounding agricultural fields. It is essential to monitor the occurrence and levels of pesticides in aquatic ecosystems to comprehend their effects on the aquatic environment. The common sampling strategy used for monitoring pesticides in stream ecosystems is through the collection and analysis of grab water samples. However, grab water sampling may not effectively monitor pesticides due to its limited ability to capture temporal and spatial variability, potentially missing fluctuations and uneven distribution of pesticides in aquatic environments. Monitoring using periphyton and sediment sampling may offer a more comprehensive approach by accounting for accumulative processes and temporal variations. Periphyton are a collective of microorganisms that grow on hard surfaces in aquatic ecosystems. They are responsive to chemical and biological changes in the environment, and therefore have the potential to act as a cost-effective, integrated sampling tool to monitor pesticide exposures in aquatic ecosystems. The objective of this study was to assess pesticides detected through periphyton, suspended sediment, and conventional grab water sampling methods and identify the matrix that offers a more comprehensive characterization of a stream's pesticide exposure profile. Ten streams across Southern Ontario were sampled in 2021 and 2022. At each stream site, water, sediment and periphyton, colonizing both artificial and natural substrates, were collected and analyzed for the presence of ~500 pesticides. Each of the three matrices detected distinctive pesticide exposure profiles. The frequency of detection in periphyton, sediment and water matrices were related to pesticides' log Kow and log Koc (P < 0.05). In addition, periphyton bioconcentrated 22 pesticides above levels observed in the ambient water. The bioconcentration factors of pesticides in periphyton can be predicted from their log Kow (simple linear regressions, P < 0.05). The results demonstrate that sediment and periphyton accumulate pesticides in stream environments. This highlights the importance of monitoring pesticide exposure using these matrices to ensure a complete and comprehensive characterization of exposure in stream ecosystems.
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Affiliation(s)
- Moira M Ijzerman
- University of Guelph, School of Environmental Sciences, Guelph, ON, Canada
| | - Melanie Raby
- Ontario Ministry of the Environment, Conservation and Parks, Toronto, ON, Canada
| | - Nicholas V Letwin
- University of Guelph, School of Environmental Sciences, Guelph, ON, Canada
| | - Yaryna M Kudla
- University of Guelph, School of Environmental Sciences, Guelph, ON, Canada
| | - Jenna D Anderson
- University of Guelph, School of Environmental Sciences, Guelph, ON, Canada
| | - Brian J Atkinson
- Laboratory Services Division, University of Guelph, Guelph, ON, Canada
| | - Rebecca C Rooney
- University of Waterloo, Department of Biology, Waterloo, ON, Canada
| | - Paul K Sibley
- University of Guelph, School of Environmental Sciences, Guelph, ON, Canada
| | - Ryan S Prosser
- University of Guelph, School of Environmental Sciences, Guelph, ON, Canada.
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Ijzerman MM, Raby M, Izma GB, Kudla YM, Letwin NV, Gallant MJ, Schiffer SR, Atkinson BJ, Rooney RC, Sibley PK, Prosser RS. An Assessment of the Toxicity of Pesticide Mixtures in Periphyton from Agricultural Streams to the Mayfly Neocloeon triangulifer. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2023; 42:2143-2157. [PMID: 37341551 DOI: 10.1002/etc.5698] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 06/05/2023] [Accepted: 06/15/2023] [Indexed: 06/22/2023]
Abstract
Residual concentrations of pesticides are commonly found outside the intended area of application in Ontario's surface waters. Periphyton are a vital dietary component for grazing organisms in aquatic ecosystems but can also accumulate substantial levels of pesticides from the surrounding water. Consequently, grazing aquatic organisms are likely subjected to pesticide exposure through the consumption of pesticide-contaminated periphyton. The objectives of the present study were to determine if pesticides partition into periphyton in riverine environments across southern Ontario and, if so, to determine the toxicity of pesticides in periphyton when fed to the grazing mayfly Neocloeon triangulifer. Sites with low, medium, and high pesticide exposure based on historic water quality monitoring data were selected to incorporate a pesticide exposure gradient into the study design. Artificial substrate samplers were utilized to colonize periphyton in situ, which were then analyzed for the presence of approximately 500 pesticides. The results demonstrate that periphyton are capable of accumulating pesticides in agricultural streams. A novel 7-day toxicity test method was created to investigate the effects of pesticides partitioned into periphyton when fed to N. triangulifer. Periphyton collected from the field sites were fed to N. triangulifer and survival and biomass production recorded. Survival and biomass production significantly decreased when fed periphyton colonized in streams with catchments dominated by agricultural land use (p < 0.05). However, the relationship between pesticide concentration and survival or biomass production was not consistent. Using field-colonized periphyton allowed us to assess the dietary toxicity of environmentally relevant concentrations of pesticide mixtures; however, nutrition and taxonomic composition of the periphyton may vary between sites. Environ Toxicol Chem 2023;42:2143-2157. © 2023 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
- Moira M Ijzerman
- School of Environmental Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Melanie Raby
- Ontario Ministry of the Environment, Conservation and Parks, Toronto, Ontario, Canada
| | - Gab B Izma
- Department of Biology, University of Waterloo, Waterloo, Ontario, Canada
| | - Yaryna M Kudla
- School of Environmental Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Nicholas V Letwin
- School of Environmental Sciences, University of Guelph, Guelph, Ontario, Canada
| | | | | | - Brian J Atkinson
- Agriculture and Food Laboratory, University of Guelph, Guelph, Ontario, Canada
| | - Rebecca C Rooney
- Department of Biology, University of Waterloo, Waterloo, Ontario, Canada
| | - Paul K Sibley
- School of Environmental Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Ryan S Prosser
- School of Environmental Sciences, University of Guelph, Guelph, Ontario, Canada
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Zhang L, Wang Z, Cai H, Lu W, Li J. Long-term agricultural contamination shaped diversity response of sediment microbiome. J Environ Sci (China) 2021; 99:90-99. [PMID: 33183720 DOI: 10.1016/j.jes.2020.06.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 06/09/2020] [Accepted: 06/09/2020] [Indexed: 06/11/2023]
Abstract
The pollution caused by agricultural production poses a threat to the ecological integrity of river ecosystems, altering the structure and function of river ecosystems. Differences in microbial community structure provide useful information about the impact of agricultural pollution on the biological integrity of ecosystems, but generally convey little information regarding ecosystem functions. In this study, using Illumina MiSeq sequencing technology based on the 16S rRNA gene, river sediment samples associated with four different types of agricultural pollution were comprehensively analyzed. The results show that the total organic carbon (TOC) content was highest at the YZS site (animal husbandry sewage) among the assayed sites, but the species richness and uniformity were lowest at this site, which may have been caused by the high nutrient source of the sewage. Furthermore, in the three YZS samples affected by the long-term discharge of aquaculture tail-water, the unique genus Dechloromonas and the genus Candidatus-Competitor were observed, which are strongly correlated with phosphorus conversion. The formation of network modules may correspond to the coexistence of functional bacteria accustomed to multiple niche combinations under different agricultural pollution conditions in river sediments. According to the PICRUSt functional prediction, the bacterial community in the agricultural polluted river sediment primarily harbored 46 subfunctions, exhibiting richness of functions. Overall, our results provide a more comprehensive understanding of the structure and ecological processes associated with the aggregation of bacterial communities, which is beneficial for the management of river environments.
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Affiliation(s)
- Lei Zhang
- School of Civil Engineering and Architecture, Chuzhou University, Chuzhou 239000, China; Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.
| | - Ziyin Wang
- School of Civil Engineering and Architecture, Chuzhou University, Chuzhou 239000, China
| | - Hua Cai
- School of Civil Engineering and Architecture, Chuzhou University, Chuzhou 239000, China
| | - Wenxuan Lu
- Fisheries Research Institute, Anhui Academy of Agricultural Sciences, Hefei 230036, China
| | - Jing Li
- Fisheries Research Institute, Anhui Academy of Agricultural Sciences, Hefei 230036, China
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Liao JY, Fan C, Huang YZ, Pei KJC. Distribution of residual agricultural pesticides and their impact assessment on the survival of an endangered species. JOURNAL OF HAZARDOUS MATERIALS 2020; 389:121871. [PMID: 31879098 DOI: 10.1016/j.jhazmat.2019.121871] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 12/03/2019] [Accepted: 12/09/2019] [Indexed: 06/10/2023]
Abstract
This study aimed to assess the distribution of spent pesticides in an agro-farming area and to evaluate their impact on the ecological risk for an endangered species combing the health risk assessment concept with the modelling algorithm proposed by European Food Safety Authority (EFSA). An agricultural area in western Taiwan was chosen to investigate the ecological risk on Prionailurus bengalensis. Their ecological stability was evaluated in the context of the residuals' distribution of the spent pesticides in the investigated area. The pesticide residues accumulated and correlated highly to the adverse health impact on the leopard cat. In the present study, 67 pesticides were detected from 79 collected soil samples. The hazard index (HI) was found related to land use patterns and the HI values in Yuanli and Zhuolan were significantly higher than those in the other areas, increasing poisoning probability of the leopard cat. The locations of agro-chemical utilization were highly overlapped with leopard cats' activity zone, supporting the hypothesis that pesticide residues posed a potential threat to the leopard cats' health. The proposed risk assessment framework was capable of estimating the risk caused by pesticide residues and no similar study has been reported before.
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Affiliation(s)
- Jing-Yu Liao
- Department of Bioenvironmental Systems Engineering, College of Bioresources and Agriculture, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Da-An District, Taipei, 10617, Taiwan
| | - Chihhao Fan
- Department of Bioenvironmental Systems Engineering, College of Bioresources and Agriculture, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Da-An District, Taipei, 10617, Taiwan.
| | - Ya-Zhen Huang
- Department of Bioenvironmental Systems Engineering, College of Bioresources and Agriculture, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Da-An District, Taipei, 10617, Taiwan
| | - Kurtis Jai-Chyi Pei
- Institute of Wildlife Conservation, College of Veterinary Medicine, National Pingtung University of Science & Technology, 1, Shuefu Road, Neipu, Pingtung 91201, Taiwan
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Non-target toxicity of novel insecticides. Arh Hig Rada Toksikol 2018; 69:86-102. [PMID: 29990301 DOI: 10.2478/aiht-2018-69-3111] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 05/01/2018] [Indexed: 01/04/2023] Open
Abstract
Humans have used insecticides since ancient times. The spectrum and potency of available insecticidal substances has greatly expanded since the industrial revolution, resulting in widespread use and unforeseen levels of synthetic chemicals in the environment. Concerns about the toxic effects of these new chemicals on non-target species became public soon after their appearance, which eventually led to the restrictions of use. At the same time, new, more environmentally-friendly insecticides have been developed, based on naturally occurring chemicals, such as pyrethroids (derivatives of pyrethrin), neonicotinoids (derivatives of nicotine), and insecticides based on the neem tree vegetable oil (Azadirachta indica), predominantly azadirachtin. Although these new substances are more selective toward pest insects, they can still target other organisms. Neonicotinoids, for example, have been implicated in the decline of the bee population worldwide. This review summarises recent literature published on non-target toxicity of neonicotinoids, pyrethroids, and neem-based insecticidal substances, with a special emphasis on neonicotinoid toxicity in honeybees. We also touch upon the effects of pesticide combinations and documented human exposure to these substances.
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Rybicki M, Jungmann D. Direct and indirect effects of pesticides on a benthic grazer during its life cycle. ENVIRONMENTAL SCIENCES EUROPE 2018; 30:35. [PMID: 30294514 PMCID: PMC6153858 DOI: 10.1186/s12302-018-0165-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 09/05/2018] [Indexed: 05/31/2023]
Abstract
BACKGROUND Macroinvertebrates in aquatic ecosystems are repeatedly exposed to pesticides during their life cycle. Effects of consecutive exposure during different life stages and possible synergistic effects are not addressed in the standardized hazard assessment. The present study investigated two environmentally relevant exposure scenarios in batch (microcosm) and artificial indoor stream (mesocosm) experiments using the larvae of the mayfly Rhithrogena semicolorata (grazer) and natural aufwuchs. Grazers were analysed regarding growth, physiological condition, and drift behaviour, while the aufwuchs was analysed in terms of biomass using the particulate organic carbon as well as the chlorophyll a content. The aim was to reveal direct and indirect effects of an herbicide exposure during autumn on juvenile grazers and an insecticide exposure during spring on semi-juvenile grazers. RESULTS Direct and indirect effects were found in both exposure scenarios at environmentally relevant concentrations. In the herbicide exposure scenario with terbutryn, clear direct effects on the aufwuchs community with a LOEC of 0.38 µg L-1 were found. Effect levels of grazers due to indirect effects were equal, with the overnight drift being the most sensitive grazer endpoint. In the insecticide exposure scenario, clear lethal and sub lethal effects of lambda-cyhalothrin were evident. Derived LC50 values for the artificial indoor stream and batch experiment were 2.42 µg g-1 OC (69 days) and 1.2 µg g-1 OC (28 days), respectively. Sub lethal effects in terms of increased drift as well-reduced growth and triglyceride levels were found at concentrations of 1.4 and 0.09 µg g-1 OC (LOECs). These results were confirmed by the batch experiment, which revealed effect values in the similar range. Finally, a clear indirect effect of the insecticide on the aufwuchs was evident in the batch experiment with an LOEC at 0.9 µg g-1 OC. CONCLUSION Toxicity Exposure Ratios calculated with the derived effect values indicate a risk for the investigated grazer by both pesticides. Moreover, observed indirect effects during the herbicide exposure seem to be able to affect the grazers during a second exposure with an insecticide, due to reduced physiological conditions. We suggest further research with time-shifted exposure scenarios to gain a better understanding of the complex interactions of pesticides with the life cycle and the food webs of macroinvertebrates.
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Affiliation(s)
- Marcus Rybicki
- Institute of Hydrobiology, Technische Universität Dresden, Zellescher Weg 40, 01217 Dresden, Germany
| | - Dirk Jungmann
- Institute of Hydrobiology, Technische Universität Dresden, Zellescher Weg 40, 01217 Dresden, Germany
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Englert D, Zubrod JP, Link M, Mertins S, Schulz R, Bundschuh M. Does Waterborne Exposure Explain Effects Caused by Neonicotinoid-Contaminated Plant Material in Aquatic Systems? ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:5793-5802. [PMID: 28447782 DOI: 10.1021/acs.est.7b00827] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Neonicotinoids are increasingly applied on trees as protection measure against insect pests. Consequently, neonicotinoids are inevitably transferred into aquatic environments either via spray drift or surface runoff or (due to neonicotinoids' systemic nature) via senescent leaves. There particularly leaf-shredding invertebrates may be exposed to neonicotinoids through both the water phase and the consumption of contaminated leaves. In 7 day bioassays (n = 30), we examined ecotoxicological differences between these two exposure scenarios for an amphipod and an insect nymph with their feeding rate as the response variable. Organisms either experienced waterborne neonicotinoid (i.e., imidacloprid, thiacloprid, and acetamiprid) exposure only or a combined exposure (waterborne and dietary) through both the consumption of contaminated leaves and neonicotinoids leaching from leaves into water. The amphipod (7 day EC50s from 0.3 to 8.4 μg/L) was more sensitive than the insect nymph (7 day EC50s from 7.0 to 19.4 μg/L). Moreover, for both species, concentration-response models derived from water concentrations indicated higher effects under the combined exposure. Together with the observed inability of shredders to avoid neonicotinoid-contaminated leaves, our results emphasize the relevance of dietary exposure (e.g., via leaves) for systemic insecticides. Thus, it would be prudent to consider dietary exposure during the registration of systemic insecticides to safeguard ecosystem integrity.
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Affiliation(s)
- Dominic Englert
- Institute for Environmental Sciences, University of Koblenz-Landau , Landau Campus, Fortstrasse 7, 76829 Landau, Germany
| | - Jochen P Zubrod
- Institute for Environmental Sciences, University of Koblenz-Landau , Landau Campus, Fortstrasse 7, 76829 Landau, Germany
| | - Moritz Link
- Institute for Environmental Sciences, University of Koblenz-Landau , Landau Campus, Fortstrasse 7, 76829 Landau, Germany
| | - Saskia Mertins
- Institute for Environmental Sciences, University of Koblenz-Landau , Landau Campus, Fortstrasse 7, 76829 Landau, Germany
| | - Ralf Schulz
- Institute for Environmental Sciences, University of Koblenz-Landau , Landau Campus, Fortstrasse 7, 76829 Landau, Germany
| | - Mirco Bundschuh
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences , Lennart Hjelms väg 9, SWE-75007 Uppsala, Sweden
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Rasmussen JJ, Reiber L, Holmstrup M, Liess M. Realistic pesticide exposure through water and food amplifies long-term effects in a Limnephilid caddisfly. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 580:1439-1445. [PMID: 28024748 DOI: 10.1016/j.scitotenv.2016.12.110] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 12/16/2016] [Accepted: 12/16/2016] [Indexed: 06/06/2023]
Abstract
Pesticides are increasingly recognized as relevant stressors in stream ecosystems. Stream biota is exposed to pesticides with low water solubility, e.g. pyrethroid insecticides, via water, habitat, and food. However, long-term effects of simultaneous exposure pathways are unknown. In this context, we conducted a microcosm experiment with the caddisfly Anabolia nervosa exposing the larvae to the pyrethroid insecticide esfenvalerate (EFV) at 0.1 and 1.0μgL-1 via (i) water, (ii) food or a (iii) combination of water and food. Combined exposure through water and food significantly reduced emergence by 60% and significantly postponed emergence timing at the highest EFV level, whereas none of the single-phase exposures showed significant effects. Moreover, our study revealed that successfully emerged females from the highest biphasic treatment level were characterised by altered composition of storage lipids indicative of reduced energy reserves. Consequently, a realistic test scenario that represents simultaneous exposure of organisms and their food may reveal substantially increased long term effects of pyrethroids when compared with current ecological risk assessment applying only single phase exposure. We recommend that relevant concurrent exposure routes of pesticides should be considered in order to derive realistic regulatory acceptable concentrations of pesticides.
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Affiliation(s)
- Jes Jessen Rasmussen
- UFZ, Helmholtz Center for Environmental Research, Department System-Ecotoxicology, Permoserstrasse 15, 04318 Leipzig, Germany; Aarhus University, Dept. of Bioscience, Vejlsoevej 25, 8600 Silkeborg, Denmark.
| | - Lena Reiber
- UFZ, Helmholtz Center for Environmental Research, Department System-Ecotoxicology, Permoserstrasse 15, 04318 Leipzig, Germany
| | - Martin Holmstrup
- Aarhus University, Dept. of Bioscience, Vejlsoevej 25, 8600 Silkeborg, Denmark
| | - Matthias Liess
- UFZ, Helmholtz Center for Environmental Research, Department System-Ecotoxicology, Permoserstrasse 15, 04318 Leipzig, Germany
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