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Streibig JC, Gejl M, Ritz C. The perspective of the logarithmic field sprayer technology. PEST MANAGEMENT SCIENCE 2024. [PMID: 38837648 DOI: 10.1002/ps.8187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Revised: 04/25/2024] [Accepted: 05/08/2024] [Indexed: 06/07/2024]
Abstract
A logarithmic sprayer was suggested about 70 years ago, but it has not yet been seriously used in research and development, and subsequent registration of plant protection products. Logarithmic sprayers have resorted to mere demonstration experiments to show end users and others how plant protection products work. Fitting dose-response curves in field experiments, however, generates much essential information, e.g., extraction of various effective field rate levels (e.g., ED20, ED50, and ED80). One of the reasons for it rarely being used in the registration of plant protection products is that the dose-response curve regression was hitherto difficult to fit; the registration requirement solely focuses on analyses of variance. Another alleged obstacle is that the logarithmic plots have systematically, not randomly distributed field rates. This paper goes through some of the problems of how to non-randomly analyze field rates by taking autocorrelation into account to make the logarithmic sprayer palatable as registration documentation by assessing efficacy, selectivity, environmental side effects, general toxicity of plant protection products, and cost-effectiveness. The development in precision agriculture, drone technology, and automation of data capture and subsequent analysis could make the logarithmic sprayer a cost-effective alternative to numerous ANOVA experiments with very few fixed field rates to aid the precision spraying of pesticides and thus reduce unnecessary environmental side effects. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Jens C Streibig
- Department of Plant and Environmental Sciences, University of Copenhagen, Taastrup, Denmark
| | | | - Christian Ritz
- National Institute of Public Health, The University of Southern Denmark, Copenhagen K, Denmark
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2
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Carvalho AR, Morão AM, Gonçalves VMF, Tiritan ME, Gorito AM, Pereira MF, Silva AMT, Castro BB, Carrola JS, Amorim MM, Ribeiro ARL, Ribeiro C. Toxicity of butylone and its enantiomers to Daphnia magna and its degradation/toxicity potential using advanced oxidation technologies. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2024; 271:106906. [PMID: 38588636 DOI: 10.1016/j.aquatox.2024.106906] [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: 12/14/2023] [Revised: 03/24/2024] [Accepted: 03/29/2024] [Indexed: 04/10/2024]
Abstract
Butylone (BTL) is a chiral synthetic cathinone available as a racemate and reported as contaminant in wastewater effluents. However, there are no studies on its impact on ecosystems and possible enantioselectivity in ecotoxicity. This work aimed to evaluate: (i) the possible ecotoxicity of BTL as racemate or its isolated (R)- and (S)- enantiomers using Daphnia magna; and (ii) the efficiency of advanced oxidation technologies (AOTs) in the removal of BTL and reduction of toxic effects caused by wastewaters. Enantiomers of BTL were obtained by liquid chromatography (LC) using a chiral semi-preparative column. Enantiomeric purity of each enantiomer was > 97 %. For toxicity assessment, a 9-day sub-chronic assay was performed with the racemate (at 0.10, 1.0 or 10 μg L-1) or each enantiomer (at 0.10 or 1.0 μg L-1). Changes in morphophysiological, behavioural, biochemical and reproductive endpoints were observed, which were dependent on the form of the substance and life stage of the organism (juvenile or adult). Removal rates of BTL in spiked wastewater (10 μg L-1) treated with different AOTs (ultraviolet, UV; ozonation, O3; and UV/O3) were similar and lower than 29 %. The 48 h D. magna acute toxicity assays demonstrated a reduction in the toxicity of the treated spiked effluents, but no differences were found amongst AOTs treatments. These results warn for the contamination and negative impact of BTL on ecosystems and highlight the need for efficient removal processes.
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Affiliation(s)
- Ana R Carvalho
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, University Institute of Health Sciences - CESPU 4585-116, Gandra, Portugal; UCIBIO - Applied Molecular Biosciences Unit, Translational Toxicology Research Laboratory, University Institute of Health Sciences (1H-TOXRUN, IUCS-CESPU) 4585-116, Gandra, Portugal; School of Health, Polytechnic Institute of Porto 4200-072, Porto, Portugal
| | - Ana M Morão
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, University Institute of Health Sciences - CESPU 4585-116, Gandra, Portugal
| | - Virgínia M F Gonçalves
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, University Institute of Health Sciences - CESPU 4585-116, Gandra, Portugal; UCIBIO - Applied Molecular Biosciences Unit, Translational Toxicology Research Laboratory, University Institute of Health Sciences (1H-TOXRUN, IUCS-CESPU) 4585-116, Gandra, Portugal; UNIPRO - Oral Pathology and Rehabilitation Research Unit, University Institute of Health Sciences (IUCS), CESPU, CRL 4585-116, Gandra, Portugal
| | - Maria Elizabeth Tiritan
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, University Institute of Health Sciences - CESPU 4585-116, Gandra, Portugal; UCIBIO - Applied Molecular Biosciences Unit, Translational Toxicology Research Laboratory, University Institute of Health Sciences (1H-TOXRUN, IUCS-CESPU) 4585-116, Gandra, Portugal; Interdisciplinary Center of Marine and Environmental Research (CIIMAR), University of Porto, Edifício do Terminal de Cruzeiros do Porto de Leixões 4450-208, Matosinhos, Portugal; Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto 4050-313, Porto, Portugal
| | - Ana M Gorito
- LSRE-LCM - Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials, Faculty of Engineering, University of Porto 4200-465, Porto, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto 4200-465, Porto, Portugal
| | - M Fernando Pereira
- LSRE-LCM - Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials, Faculty of Engineering, University of Porto 4200-465, Porto, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto 4200-465, Porto, Portugal
| | - Adrián M T Silva
- LSRE-LCM - Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials, Faculty of Engineering, University of Porto 4200-465, Porto, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto 4200-465, Porto, Portugal
| | - Bruno B Castro
- CBMA - Centre of Molecular and Environmental Biology / ARNET - Aquatic Research Network, University of Minho, 4710-057, Braga, Portugal; IB-S - Institute of Science and Innovation for Bio-Sustainability, University of Minho 4710-057, Braga, Portugal
| | - João S Carrola
- Department of Biology and Environment, University of Trás-os-Montes and Alto Douro, CITAB/Inov4Agro 5000-801, Vila Real, Portugal
| | - Maria M Amorim
- School of Health, Polytechnic Institute of Porto 4200-072, Porto, Portugal
| | - Ana R L Ribeiro
- LSRE-LCM - Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials, Faculty of Engineering, University of Porto 4200-465, Porto, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto 4200-465, Porto, Portugal.
| | - Cláudia Ribeiro
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, University Institute of Health Sciences - CESPU 4585-116, Gandra, Portugal; UCIBIO - Applied Molecular Biosciences Unit, Translational Toxicology Research Laboratory, University Institute of Health Sciences (1H-TOXRUN, IUCS-CESPU) 4585-116, Gandra, Portugal.
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Ackerman JT, Peterson SH, Herzog MP, Yee JL. Methylmercury Effects on Birds: A Review, Meta-Analysis, and Development of Toxicity Reference Values for Injury Assessment Based on Tissue Residues and Diet. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2024; 43:1195-1241. [PMID: 38682592 DOI: 10.1002/etc.5858] [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: 09/22/2023] [Revised: 11/08/2023] [Accepted: 02/20/2024] [Indexed: 05/01/2024]
Abstract
Birds are used as bioindicators of environmental mercury (Hg) contamination, and toxicity reference values are needed for injury assessments. We conducted a comprehensive review, summarized data from 168 studies, performed a series of Bayesian hierarchical meta-analyses, and developed new toxicity reference values for the effects of methylmercury (MeHg) on birds using a benchmark dose analysis framework. Lethal and sublethal effects of MeHg on birds were categorized into nine biologically relevant endpoint categories and three age classes. Effective Hg concentrations where there was a 10% reduction (EC10) in the production of juvenile offspring (0.55 µg/g wet wt adult blood-equivalent Hg concentrations, 80% credible interval: [0.33, 0.85]), histology endpoints (0.49 [0.15, 0.96] and 0.61 [0.09, 2.48]), and biochemical markers (0.77 [<0.25, 2.12] and 0.57 [0.35, 0.92]) were substantially lower than those for survival (2.97 [2.10, 4.73] and 5.24 [3.30, 9.55]) and behavior (6.23 [1.84, >13.42] and 3.11 [2.10, 4.64]) of juveniles and adults, respectively. Within the egg age class, survival was the most sensitive endpoint (EC10 = 2.02 µg/g wet wt adult blood-equivalent Hg concentrations [1.39, 2.94] or 1.17 µg/g fresh wet wt egg-equivalent Hg concentrations [0.80, 1.70]). Body morphology was not particularly sensitive to Hg. We developed toxicity reference values using a combined survival and reproduction endpoints category for juveniles, because juveniles were more sensitive to Hg toxicity than eggs or adults. Adult blood-equivalent Hg concentrations (µg/g wet wt) and egg-equivalent Hg concentrations (µg/g fresh wet wt) caused low injury to birds (EC1) at 0.09 [0.04, 0.17] and 0.04 [0.01, 0.08], moderate injury (EC5) at 0.6 [0.37, 0.84] and 0.3 [0.17, 0.44], high injury (EC10) at 1.3 [0.94, 1.89] and 0.7 [0.49, 1.02], and severe injury (EC20) at 3.2 [2.24, 4.78] and 1.8 [1.28, 2.79], respectively. Maternal dietary Hg (µg/g dry wt) caused low injury to juveniles at 0.16 [0.05, 0.38], moderate injury at 0.6 [0.29, 1.03], high injury at 1.1 [0.63, 1.87], and severe injury at 2.4 [1.42, 4.13]. We found few substantial differences in Hg toxicity among avian taxonomic orders, including for controlled laboratory studies that injected Hg into eggs. Our results can be used to quantify injury to birds caused by Hg pollution. Environ Toxicol Chem 2024;43:1195-1241. Published 2024. This article is a U.S. Government work and is in the public domain in the USA. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
- Joshua T Ackerman
- US Geological Survey, Western Ecological Research Center, Dixon Field Station, Dixon, California, USA
| | - Sarah H Peterson
- US Geological Survey, Western Ecological Research Center, Dixon Field Station, Dixon, California, USA
| | - Mark P Herzog
- US Geological Survey, Western Ecological Research Center, Dixon Field Station, Dixon, California, USA
| | - Julie L Yee
- US Geological Survey, Western Ecological Research Center, Santa Cruz Field Station, Santa Cruz, California, USA
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Hamilton R, Jacobs JL, McCoy AG, Kelly HM, Bradley CA, Malvick DK, Rojas JA, Chilvers MI. Multistate Sensitivity Monitoring of Fusarium virguliforme to the SDHI Fungicides Fluopyram and Pydiflumetofen in the United States. PLANT DISEASE 2024; 108:1602-1611. [PMID: 38127633 DOI: 10.1094/pdis-11-23-2465-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Sudden death syndrome (SDS), caused by Fusarium virguliforme, is an important yield-limiting disease of soybean (Glycine max). From 1996 to 2022, cumulative yield losses attributed to SDS in North America totaled over 25 million metric tons, which was valued at over US $7.8 billion. Seed treatments are widely used to manage SDS by reducing early season soybean root infection by F. virguliforme. Fluopyram (succinate dehydrogenase inhibitor [SDHI] - FRAC 7), a fungicide seed treatment for SDS management, has been registered for use on soybean in the United States since 2014. A baseline sensitivity study conducted in 2014 evaluated 130 F. virguliforme isolates collected from five states to fluopyram in a mycelial growth inhibition assay and reported a mean EC50 of 3.35 mg/liter. This baseline study provided the foundation for the objectives of this research: to detect any statistically significant change in fluopyram sensitivity over time and geographical regions within the United States and to investigate sensitivity to the fungicide pydiflumetofen. We repeated fluopyram sensitivity testing on a panel of 80 historical F. virguliforme isolates collected from 2006 to 2013 (76 of which were used in the baseline study) and conducted testing on 123 contemporary isolates collected from 2016 to 2022 from 11 states. This study estimated a mean absolute EC50 of 3.95 mg/liter in isolates collected from 2006 to 2013 and a mean absolute EC50 of 4.19 mg/liter in those collected in 2016 to 2022. There was no significant change in fluopyram sensitivity (P = 0.1) identified between the historical and contemporary isolates. A subset of 23 isolates, tested against pydiflumetofen under the same conditions, estimated an absolute mean EC50 of 0.11 mg/liter. Moderate correlation was detected between fluopyram and pydiflumetofen sensitivity estimates (R = 0.53; P < 0.001). These findings enable future fluopyram and pydiflumetofen resistance monitoring and inform current soybean SDS management strategies in a regional and national context.
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Affiliation(s)
- Ryan Hamilton
- Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, MI 48824
| | - Janette L Jacobs
- Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, MI 48824
| | - Austin G McCoy
- Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, MI 48824
| | - Heather M Kelly
- Department of Entomology and Plant Pathology, The University of Tennessee Institute of Agriculture, Jackson, TN 38301
| | - Carl A Bradley
- Department of Plant Pathology, University of Kentucky, Princeton, KY 42445
| | - Dean K Malvick
- Department of Plant Pathology, University of Minnesota, St. Paul, MN 55108
| | - J Alejandro Rojas
- Department of Entomology and Plant Pathology, University of Arkansas, Fayetteville, AR 72701
| | - Martin I Chilvers
- Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, MI 48824
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Casado-Martinez MC, Dell'Ambrogio G, Campiche S, Kroll A, Lauber E, Marti-Roura M, Mendez-Fernandez L, Renaud M, Tierbach A, Wildi M, Wong JWY, Werner I, Junghans M, Ferrari BJD. Incorporation of sediment- and soil-specific aspects in the Criteria for Reporting and Evaluating Ecotoxicity Data (CRED). INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2024. [PMID: 38780110 DOI: 10.1002/ieam.4948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 04/23/2024] [Accepted: 04/24/2024] [Indexed: 05/25/2024]
Abstract
In environmental risk assessment either for registration purposes or for retrospective assessments of monitoring data, the hazard assessment is predominantly based on effect data from ecotoxicity studies. Most regulatory frameworks require studies used for risk assessment to be evaluated for reliability and relevance. Historically, the Klimisch methodology was used in many regulatory procedures where reliability needed to be evaluated. More recently, the Criteria for Reporting and Evaluating Ecotoxicity Data (CRED) have been developed for aquatic ecotoxicity studies, providing more detailed guidance on the evaluation and reporting of not only the reliability but also the relevance of a scientific study. Here, we discuss the application of the CRED methodology for assessing sediment and soil ecotoxicity studies, addressing important sediment- and soil-specific criteria that should be included as part of the CRED evaluation system. We also provide detailed recommendations for the design and reporting of sediment and soil toxicity studies that can be used by scientists and researchers wishing to contribute ecotoxicological data for effect assessments carried out within regulatory frameworks. Integr Environ Assess Manag 2024;00:1-13. © 2024 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC).
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Affiliation(s)
| | | | | | - Alexandra Kroll
- Swiss Centre for Applied Ecotoxicology, Dubendorf, Switzerland
| | - Eva Lauber
- Swiss Centre for Applied Ecotoxicology, Dubendorf, Switzerland
| | | | - Leire Mendez-Fernandez
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country (UPV/EHU), Bilbao, Spain
| | - Mathieu Renaud
- Swiss Centre for Applied Ecotoxicology, Lausanne, Switzerland
| | - Alena Tierbach
- Swiss Centre for Applied Ecotoxicology, Dubendorf, Switzerland
| | - Michel Wildi
- Swiss Centre for Applied Ecotoxicology, Lausanne, Switzerland
| | - Janine W Y Wong
- Swiss Centre for Applied Ecotoxicology, Lausanne, Switzerland
| | - Inge Werner
- Swiss Centre for Applied Ecotoxicology, Dubendorf, Switzerland
| | - Marion Junghans
- Swiss Centre for Applied Ecotoxicology, Dubendorf, Switzerland
| | - Benoit J D Ferrari
- Swiss Centre for Applied Ecotoxicology, Lausanne, Switzerland
- Swiss Centre for Applied Ecotoxicology, Dubendorf, Switzerland
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Thomas SC, Ruan R, Gale NV, Gezahegn S. Phytotoxicity and hormesis in common mobile organic compounds in leachates of wood-derived biochars. BIOCHAR 2024; 6:51. [PMID: 38799720 PMCID: PMC11111554 DOI: 10.1007/s42773-024-00339-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 04/28/2024] [Accepted: 04/29/2024] [Indexed: 05/29/2024]
Abstract
Although addition of pyrolyzed organic materials (biochars) to soil generally results in increased growth and physiological performance of plants, neutral and negative responses have also commonly been detected. Toxicity of organic compounds generated during pyrolysis, sorbed by biochars, and then released into the soil solution, has been implicated as a possible mechanism for such negative effects. Conversely, water-soluble biochar constituents have also been suggested to have "hormetic" effects (positive effects on plants at low concentrations); however, no specific compounds responsible have been identified. We investigated the relative phytotoxicity-and possible hormetic effects-of 14 organic compounds common in aqueous extracts of freshly produced lignocellulosic biochars, using seed germination bioassays. Of the compounds examined, volatile fatty acids (VFAs: acetic, propionic, butyric, valeric, caproic, and 2-ethylbutyric acids) and phenol, showed acute phytotoxicity, with germination-based ED50 values of 1-30 mmol L-1, and 2-ethylbutyric acid showed ED50 values of 0.1-1.0 mmol L-1. Other compounds (benzene, benzoic acid, butanone, methyl salicylate, toluene, and 2,4-di-tert-butylphenol) showed toxic effects only at high concentrations close to solubility limits. Although phytotoxic at high concentrations, valeric and caproic acid also showed detectable hormetic effects on seedlings, increasing radicle extension by 5-15% at concentrations of ~ 0.01-0.1 mmol L-1. These data support the hypothesis that VFAs are the main agents responsible for phytotoxic effects of lignocellulosic biochar leachates, but that certain VFAs also have hormetic effects at low concentrations and may contribute to positive effects of biochar leachates on early plant development in some cases. Graphical Abstract Supplementary Information The online version contains supplementary material available at 10.1007/s42773-024-00339-w.
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Affiliation(s)
- Sean C. Thomas
- Institute of Forestry and Conservation, John H Daniels Faculty of Architecture Landscape and Design, University of Toronto, 33 Willcocks St., Toronto, ON M5S 3B3 Canada
| | - Ryan Ruan
- Institute of Forestry and Conservation, John H Daniels Faculty of Architecture Landscape and Design, University of Toronto, 33 Willcocks St., Toronto, ON M5S 3B3 Canada
| | - Nigel V. Gale
- Institute of Forestry and Conservation, John H Daniels Faculty of Architecture Landscape and Design, University of Toronto, 33 Willcocks St., Toronto, ON M5S 3B3 Canada
| | - Sossina Gezahegn
- Institute of Forestry and Conservation, John H Daniels Faculty of Architecture Landscape and Design, University of Toronto, 33 Willcocks St., Toronto, ON M5S 3B3 Canada
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Maniak H, Matyja K, Pląskowska E, Jarosz J, Majewska P, Wietrzyk J, Gołębiowska H, Trusek A, Giurg M. 4-Hydroxybenzoic Acid-Based Hydrazide-Hydrazones as Potent Growth Inhibition Agents of Laccase-Producing Phytopathogenic Fungi That Are Useful in the Protection of Oilseed Crops. Molecules 2024; 29:2212. [PMID: 38792074 PMCID: PMC11124341 DOI: 10.3390/molecules29102212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 04/28/2024] [Accepted: 05/05/2024] [Indexed: 05/26/2024] Open
Abstract
The research on new compounds against plant pathogens is still socially and economically important. It results from the increasing resistance of pests to plant protection products and the need to maintain high yields of crops, particularly oilseed crops used to manufacture edible and industrial oils and biofuels. We tested thirty-five semi-synthetic hydrazide-hydrazones with aromatic fragments of natural origin against phytopathogenic laccase-producing fungi such as Botrytis cinerea, Sclerotinia sclerotiorum, and Cerrena unicolor. Among the investigated molecules previously identified as potent laccase inhibitors were also strong antifungal agents against the fungal species tested. The highest antifungal activity showed derivatives of 4-hydroxybenzoic acid and salicylic aldehydes with 3-tert-butyl, phenyl, or isopropyl substituents. S. sclerotiorum appeared to be the most susceptible to the tested compounds, with the lowest IC50 values between 0.5 and 1.8 µg/mL. We applied two variants of phytotoxicity tests for representative crop seeds and selected hydrazide-hydrazones. Most tested molecules show no or low phytotoxic effect for flax and sunflower seeds. Moreover, a positive impact on seed germination infected with fungi was observed. With the potential for application, the cytotoxicity of the hydrazide-hydrazones of choice toward MCF-10A and BALB/3T3 cell lines was lower than that of the azoxystrobin fungicide tested.
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Affiliation(s)
- Halina Maniak
- Department of Micro, Nano, and Bioprocess Engineering, Faculty of Chemistry, Wroclaw University of Science and Technology, 4/6 Norwida Street, 50-373 Wroclaw, Poland; (K.M.); (A.T.)
| | - Konrad Matyja
- Department of Micro, Nano, and Bioprocess Engineering, Faculty of Chemistry, Wroclaw University of Science and Technology, 4/6 Norwida Street, 50-373 Wroclaw, Poland; (K.M.); (A.T.)
| | - Elżbieta Pląskowska
- Division of Plant Pathology and Mycology, Department of Plant Protection, Wroclaw University of Environmental and Life Sciences, 24A Grunwald Square, 50-363 Wroclaw, Poland;
| | - Joanna Jarosz
- Laboratory of Experimental Anticancer Therapy, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 12 R. Weigla Street, 53-114 Wroclaw, Poland; (J.J.); (J.W.)
| | - Paulina Majewska
- Institute of Technology and Life Sciences-National Research Institute, 3 Hrabska Avenue, 05-090 Raszyn, Poland;
| | - Joanna Wietrzyk
- Laboratory of Experimental Anticancer Therapy, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 12 R. Weigla Street, 53-114 Wroclaw, Poland; (J.J.); (J.W.)
| | - Hanna Gołębiowska
- Department of Weed Science and Tillage Systems, Institute of Soil Science and Plant Cultivation State Research Institute, 61 Orzechowa Street, 50-540 Wroclaw, Poland;
| | - Anna Trusek
- Department of Micro, Nano, and Bioprocess Engineering, Faculty of Chemistry, Wroclaw University of Science and Technology, 4/6 Norwida Street, 50-373 Wroclaw, Poland; (K.M.); (A.T.)
| | - Mirosław Giurg
- Department of Organic and Medicinal Chemistry, Faculty of Chemistry, Wroclaw University of Science and Technology, 27 Wybrzeże Wyspiańskiego, 50-370 Wroclaw, Poland
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Veresoglou SD, Begum N. Dose-response curves: the next frontier in plant ecology. TRENDS IN PLANT SCIENCE 2024:S1360-1385(24)00089-X. [PMID: 38653637 DOI: 10.1016/j.tplants.2024.03.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 03/09/2024] [Accepted: 03/26/2024] [Indexed: 04/25/2024]
Abstract
A large fraction of experimental work in plant ecology, and thus also on ecosystem functioning and the delivery of ecosystem services, describes experiments that have been carried out under controlled (glasshouse) conditions. Controlled growth settings commonly sacrifice realism through, for example, reducing the densities of plant species in the pots and controlling how environmental settings such as moisture and light vary in favor of a higher mechanistic resolution, which makes these studies particularly suitable for subsequent syntheses. We explore the possibility that further integration of dose-response curves can maximize the impact of existing studies. We suggest that we can expand considerably the scope of the dose and response variables that are considered in plant ecology.
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Affiliation(s)
- Stavros D Veresoglou
- State Key Laboratory of Biocontrol, School of Ecology, Sun Yat-sen University, Shenzhen, 518107, China.
| | - Naheeda Begum
- State Key Laboratory of Biocontrol, School of Ecology, Sun Yat-sen University, Shenzhen, 518107, China.
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9
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Harte SJ, Bray DP, Nash-Woolley V, Stevenson PC, Fernández-Grandon GM. Antagonistic and additive effect when combining biopesticides against the fall armyworm, Spodoptera frugiperda. Sci Rep 2024; 14:6029. [PMID: 38472262 PMCID: PMC10933331 DOI: 10.1038/s41598-024-56599-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 03/08/2024] [Indexed: 03/14/2024] Open
Abstract
Fall armyworm, Spodoptera frugiperda (FAW) is a cosmopolitan crop pest species that has recently become established in sub-Saharan Africa and Southeast Asia. Current FAW control is almost entirely dependent on synthetic pesticides. Biopesticides offer a more sustainable alternative but have limitations. For example, pyrethrum is an effective botanical insecticide with low mammalian toxicity but is highly UV labile, resulting in a rapid loss of efficacy in the field. Beauveria bassiana is an entomopathogenic fungus that is more persistent, but there is a time lag of several days before it causes insect mortality and leads to effective control. The combination of these biopesticides could mitigate their drawbacks for FAW control. Here we evaluated the efficacy of pyrethrum and B. bassiana as individual treatments and in combination against 3rd instar FAW. Four different combinations of these two biopesticides were tested, resulting in an antagonistic relationship at the lowest concentrations of B. bassiana and pyrethrum (1 × 104 conidia mL-1 with 25 ppm) and an additive effect for the other 3 combined treatments (1 × 104 conidia mL-1 with 100 ppm and 1 × 105 conidia mL-1 with 25 ppm and 100 ppm pyrethrum). Additionally, a delay in efficacy from B. bassiana was observed when combined with pyrethrum as well as a general inhibition of growth on agar plates. These results appear to show that this particular combination of biopesticides is not universally beneficial or detrimental to pest control strategies and is dependent on the doses of each biopesticide applied. However, the additive effect shown here at specific concentrations does indicate that combining biopesticides could help overcome the challenges of persistence seen in botanical pesticides and the slow establishment of EPF, with the potential to improve effectiveness of biopesticides for IPM.
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Affiliation(s)
- Steven J Harte
- Natural Resources Institute, University of Greenwich, Central Avenue, Chatham Maritime, Kent, ME4 4TB, UK.
| | - Daniel P Bray
- Natural Resources Institute, University of Greenwich, Central Avenue, Chatham Maritime, Kent, ME4 4TB, UK
| | - Victoria Nash-Woolley
- Natural Resources Institute, University of Greenwich, Central Avenue, Chatham Maritime, Kent, ME4 4TB, UK
- CHAP, Innovation Centre, Innovation Way, Heslington, YO10 5DG, UK
| | - Philip C Stevenson
- Natural Resources Institute, University of Greenwich, Central Avenue, Chatham Maritime, Kent, ME4 4TB, UK
- Royal Botanic Gardens, Kew, Kew Green, Richmond, Surrey, TW9 3AE, UK
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10
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Bustad E, Mudrock E, Nilles EM, Mcquate A, Bergado M, Gu A, Galitan L, Gleason N, Ou HC, Raible DW, Hernandez RE, Ma S. In vivo screening for toxicity-modulating drug interactions identifies antagonism that protects against ototoxicity in zebrafish. Front Pharmacol 2024; 15:1363545. [PMID: 38515847 PMCID: PMC10955247 DOI: 10.3389/fphar.2024.1363545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Accepted: 02/15/2024] [Indexed: 03/23/2024] Open
Abstract
Introduction: Ototoxicity is a debilitating side effect of over 150 medications with diverse mechanisms of action, many of which could be taken concurrently to treat multiple conditions. Approaches for preclinical evaluation of drug-drug interactions that might impact ototoxicity would facilitate design of safer multi-drug regimens and mitigate unsafe polypharmacy by flagging combinations that potentially cause adverse interactions for monitoring. They may also identify protective agents that antagonize ototoxic injury. Methods: To address this need, we have developed a novel workflow that we call Parallelized Evaluation of Protection and Injury for Toxicity Assessment (PEPITA), which empowers high-throughput, semi-automated quantification of ototoxicity and otoprotection in zebrafish larvae via microscopy. We used PEPITA and confocal microscopy to characterize in vivo the consequences of drug-drug interactions on ototoxic drug uptake and cellular damage of zebrafish lateral line hair cells. Results and discussion: By applying PEPITA to measure ototoxic drug interaction outcomes, we discovered antagonistic interactions between macrolide and aminoglycoside antibiotics that confer protection against aminoglycoside-induced damage to lateral line hair cells in zebrafish larvae. Co-administration of either azithromycin or erythromycin in zebrafish protected against damage from a broad panel of aminoglycosides, at least in part via inhibiting drug uptake into hair cells via a mechanism independent from hair cell mechanotransduction. Conversely, combining macrolides with aminoglycosides in bacterial inhibition assays does not show antagonism of antimicrobial efficacy. The proof-of-concept otoprotective antagonism suggests that combinatorial interventions can potentially be developed to protect against other forms of toxicity without hindering on-target drug efficacy.
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Affiliation(s)
- Ethan Bustad
- Center for Global Infectious Disease Research, Seattle Children’s Research Institute, Seattle, WA, United States
| | - Emma Mudrock
- Center for Global Infectious Disease Research, Seattle Children’s Research Institute, Seattle, WA, United States
| | - Elizabeth M. Nilles
- Center for Global Infectious Disease Research, Seattle Children’s Research Institute, Seattle, WA, United States
| | - Andrea Mcquate
- Department of Otolaryngology-HNS, University of Washington, Seattle, WA, United States
- Department of Biological Structure, University of Washington, Seattle, WA, United States
- Department of Biology, University of New Mexico, Albuquerque, NM, United States
| | - Monica Bergado
- Center for Global Infectious Disease Research, Seattle Children’s Research Institute, Seattle, WA, United States
| | - Alden Gu
- Center for Global Infectious Disease Research, Seattle Children’s Research Institute, Seattle, WA, United States
| | - Louie Galitan
- Center for Global Infectious Disease Research, Seattle Children’s Research Institute, Seattle, WA, United States
| | - Natalie Gleason
- Center for Global Infectious Disease Research, Seattle Children’s Research Institute, Seattle, WA, United States
| | - Henry C. Ou
- Department of Otolaryngology-HNS, University of Washington, Seattle, WA, United States
- Department of Pediatrics, Seattle Children’s Hospital, Seattle, WA, United States
| | - David W. Raible
- Department of Otolaryngology-HNS, University of Washington, Seattle, WA, United States
- Department of Biological Structure, University of Washington, Seattle, WA, United States
- VM Bloedel Hearing Research Center, University of Washington, Seattle, WA, United States
| | - Rafael E. Hernandez
- Center for Global Infectious Disease Research, Seattle Children’s Research Institute, Seattle, WA, United States
- Department of Pediatrics, University of Washington, Seattle, WA, United States
| | - Shuyi Ma
- Center for Global Infectious Disease Research, Seattle Children’s Research Institute, Seattle, WA, United States
- Department of Pediatrics, University of Washington, Seattle, WA, United States
- Department of Chemical Engineering, University of Washington, Seattle, WA, United States
- Pathobiology Graduate Program, Department of Global Health, University of Washington, Seattle, WA, United States
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11
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Colas S, Le Faucheur S. How do biomarkers dance? Specific moves of defense and damage biomarkers for biological interpretation of dose-response model trends. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133180. [PMID: 38104522 DOI: 10.1016/j.jhazmat.2023.133180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 11/13/2023] [Accepted: 12/03/2023] [Indexed: 12/19/2023]
Abstract
Omics studies are currently increasingly used in ecotoxicology to highlight the induction of known or novel biomarkers when organisms are exposed to contaminants. Although it is virtually impossible to identify all biomarkers from all organisms, biomarkers can be grouped as defense or damage biomarkers, exhibiting a limited number of response trends. Our working hypothesis is that defense and damage biomarkers follow different dose-response patterns. A meta-analysis of 156 articles and 2595 observations of dose-response curves of defense and damage biomarkers was carried out in order to characterize the response trends of these biological parameters in a large panel of living organisms (18 phyla) exposed to inorganic or organic contaminants (176 in total). Using multinomial logistic regression models, defense biomarkers were found to describe biphasic responses (bell- and U-shaped) to a greater extent (2.5 times) than damage biomarkers. In contrast, damage biomarkers varied mainly monotonically (decreasing or increasing), representing 85% of the observations. Neither the nature of the contaminant nor the type of organisms belonging to 4 kingdoms, influence these specific responses. This result suggests that cellular defense and damage mechanisms are not specific to stressors and are conserved throughout life. Trend analysis of dose-response models as a biological interpretation of biomarkers could thus be a valuable way to exploit large omics datasets.
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Affiliation(s)
- Simon Colas
- Universite de Pau et des Pays de l'Adour, E2S-UPPA, CNRS, IPREM, Pau, France.
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12
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Gertsch W, Wong WK. An interactive tool for designing efficient toxicology experiments. Arch Toxicol 2024; 98:1015-1022. [PMID: 38112716 DOI: 10.1007/s00204-023-03651-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 11/22/2023] [Indexed: 12/21/2023]
Abstract
The design of dose-response experiments is an important part of toxicology research. Efficient design of these experiments requires choosing optimal doses and assigning the correct number of subjects to those doses under a given criterion. Optimal design theory provides the tools to find the most efficient experimental designs in terms of cost and statistical efficiency. However, the mathematical details can be distracting and make these designs inaccessible to many toxicologists. To facilitate use of these designs, we present an easy to use web-app for finding two types of optimal designs for models commonly used in toxicology. We include tools for checking the optimality of a given design and for assessing efficiency of any user-supplied design. Using state-of-the-art nature-inspired metaheuristic algorithms, the web-app allows the user to quickly find optimal designs for estimating model parameters or the benchmark dose.
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Affiliation(s)
- William Gertsch
- Department of Biostatistics, University of California, Los Angeles, Los Angeles, CA, USA.
| | - Weng Kee Wong
- Department of Biostatistics, University of California, Los Angeles, Los Angeles, CA, USA
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13
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Woodward AP. Bayesian estimation in veterinary pharmacology: A conceptual and practical introduction. J Vet Pharmacol Ther 2024. [PMID: 38385655 DOI: 10.1111/jvp.13433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/22/2024] [Accepted: 01/24/2024] [Indexed: 02/23/2024]
Abstract
Sophisticated mathematical and computational tools have become widespread and important in veterinary pharmacology. Although the theoretical basis and practical applications of these have been widely explored in the literature, statistical inference in the context of these models has received less attention. Optimization methods, often with frequentist statistical inference, have been predominant. In contrast, Bayesian statistics have not been widely applied, but offer both practical utility and arguably greater interpretability. Veterinary pharmacology applications are generally well supported by relevant prior information, from either existing substantive knowledge, or an understanding of study and model design. This facilitates practical implementation of Bayesian analyses that can take advantage of this knowledge. This essay will explore the specification of Bayesian models relevant to veterinary pharmacology, including demonstration of prior selection, and illustrate the capability of these models to generate practically useful statistics, including uncertainty statements, that are difficult or impossible to obtain otherwise. Case studies using simulated data will describe applications in clinical trials, pharmacodynamics, and pharmacokinetics, all including multilevel modeling. This content may serve as a suitable starting point for researchers in veterinary pharmacology and related disciplines considering Bayesian estimation for their applied work.
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Affiliation(s)
- Andrew P Woodward
- Faculty of Health, University of Canberra, Canberra, Australian Capital Territory, Australia
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14
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Degli-Innocenti F. The pathology of hype, hyperbole and publication bias is creating an unwarranted concern towards biodegradable mulch films. JOURNAL OF HAZARDOUS MATERIALS 2024; 463:132923. [PMID: 37939562 DOI: 10.1016/j.jhazmat.2023.132923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/10/2023] [Accepted: 11/01/2023] [Indexed: 11/10/2023]
Abstract
The idea that it is a risk to promote biodegradable mulch films on a large scale is becoming established at academic level based on a series of articles similar in approach and conclusions. However, a critical analysis shows that the results do not justify the alarmist tones. The negative effects of hand-cut pieces of virgin material added in pots at concentrations up to 714 times the application doses are ascribed to the "accumulation" and "contamination" of "residues" and "debris" of biodegradable plastics. Yet, no accumulation and no contamination of biodegradable microplastics has actually been shown. No Predicted Environmental Concentration was established, thus the use of the term risk is inappropriate. The hypothesis of transient phytotoxicity of organic matter under decomposition i.e., an artificial outcome of the experimental scheme used, was not considered. A scrupulous approach to terminology is very important for the quality of communication and for the development of innovations. Scientific communication is a delicate process in which and to avoid hyperbole, there must be strict logical and lexical consistency between results and conclusions. Guidelines on the communication of the results of studies on biodegradable mulch must be developed to avoid the spread of unjustified concerns.
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15
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Niassy S, Omuse ER, Khang’ati JE, Bächinger I, Kupesa DM, Cheseto X, Mbatha BW, Copeland RS, Mohamed SA, Gama M, Mitti JM, Belayneh Y, Delabays N, Lefort F, Ekesi S, Subramanian S. Validating Indigenous Farmers' Practice in the Management of the Fall Armyworm Spodoptera frugiperda (J. E. Smith) in Maize Cropping Systems in Africa. Life (Basel) 2024; 14:180. [PMID: 38398690 PMCID: PMC10890150 DOI: 10.3390/life14020180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 01/01/2024] [Accepted: 01/11/2024] [Indexed: 02/25/2024] Open
Abstract
Before the invasion of the fall armyworm (FAW) Spodoptera frugiperda into Africa, smallholder farmers had been using indigenous practices such as applying fish soup to plants to manage stemborer pests. Although farmers have since begun adapting this practice against FAW, no attempt has been made to scientifically evaluate this practice. Therefore, we assessed the efficacy of applying fish soup to maize plants that were artificially infested with FAW under semi-field conditions. Our results showed that foliar damage is inversely correlated with the concentration of a fish soup and sugar solution, with the highest (100%) concentration resulting in the lowest foliar damage and the highest plant recovery. The FAW foliar damage results for maize plants treated with 100%, 50%, 10% fish soup and sugar, and distilled water were 46.3 ± 5.6, 51.1 ± 5.0, 71.6 ± 5.2, and 99.4 ± 0.4%, respectively, whereas plant recovery results from the same treatments were 35.2 ± 3.7, 31.1 ± 5.4, 20.0 ± 4.6, and 0.0 ± 0.0%, respectively. A concentration of fish soup and sugar solution of at least 25.9% was required to achieve the lowest foliar damage of 17.8% and peak plant recovery of 73.6%. Fish soup and sugar solutions attracted a wide range of insects, including potential natural enemies (predators and parasitoids) of FAW, in a dose-dependent manner. Maize plants treated with fish soup and sugar showed higher chlorophyll content and better growth than the control did. Proximate and chemical analysis showed that fish soup contains essential plant growth nutrients (e.g., nitrogen, phosphorus, and calcium). Through GC-MS analyses, we identified 76 volatile organic compounds in fish soup, of which 16 have been reported as insect attractants, highlighting their potential ecological significance. Therefore, the indigenous pest management practices for FAW, such as the use of fish soup, deserve particular attention. These practices could contribute to food security and improve the livelihoods of vulnerable communities. Further field validation studies, economic analyses, product development, and optimisation are therefore required to optimise the use of fish soup based on fish waste.
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Affiliation(s)
- Saliou Niassy
- International Centre of Insect Physiology and Ecology, Nairobi P.O. Box 30772-00100, Kenya; (E.R.O.); (J.E.K.); (D.M.K.); (X.C.); (B.W.M.); (R.S.C.); (S.A.M.); (S.E.); (S.S.)
| | - Evanson Rigan Omuse
- International Centre of Insect Physiology and Ecology, Nairobi P.O. Box 30772-00100, Kenya; (E.R.O.); (J.E.K.); (D.M.K.); (X.C.); (B.W.M.); (R.S.C.); (S.A.M.); (S.E.); (S.S.)
| | - John Emanuel Khang’ati
- International Centre of Insect Physiology and Ecology, Nairobi P.O. Box 30772-00100, Kenya; (E.R.O.); (J.E.K.); (D.M.K.); (X.C.); (B.W.M.); (R.S.C.); (S.A.M.); (S.E.); (S.S.)
| | - Ines Bächinger
- Research Institute Land Nature Environment, Geneva School of Engineering Architecture and Landscape, HES-SO University of Applied Sciences and Arts Western Switzerland, CH-1254 Jussy, Switzerland; (I.B.); (N.D.)
| | - David Mfuti Kupesa
- International Centre of Insect Physiology and Ecology, Nairobi P.O. Box 30772-00100, Kenya; (E.R.O.); (J.E.K.); (D.M.K.); (X.C.); (B.W.M.); (R.S.C.); (S.A.M.); (S.E.); (S.S.)
| | - Xavier Cheseto
- International Centre of Insect Physiology and Ecology, Nairobi P.O. Box 30772-00100, Kenya; (E.R.O.); (J.E.K.); (D.M.K.); (X.C.); (B.W.M.); (R.S.C.); (S.A.M.); (S.E.); (S.S.)
| | - Benjamin W. Mbatha
- International Centre of Insect Physiology and Ecology, Nairobi P.O. Box 30772-00100, Kenya; (E.R.O.); (J.E.K.); (D.M.K.); (X.C.); (B.W.M.); (R.S.C.); (S.A.M.); (S.E.); (S.S.)
| | - Robert S. Copeland
- International Centre of Insect Physiology and Ecology, Nairobi P.O. Box 30772-00100, Kenya; (E.R.O.); (J.E.K.); (D.M.K.); (X.C.); (B.W.M.); (R.S.C.); (S.A.M.); (S.E.); (S.S.)
| | - Samira Abuelgasim Mohamed
- International Centre of Insect Physiology and Ecology, Nairobi P.O. Box 30772-00100, Kenya; (E.R.O.); (J.E.K.); (D.M.K.); (X.C.); (B.W.M.); (R.S.C.); (S.A.M.); (S.E.); (S.S.)
| | - Mphatso Gama
- Machinga Agricultural Development Division, Liwonde Private Bag 3, Malawi;
| | - Joyce Mulila Mitti
- Figtree Limited (Figtree Consulting Services), Lusaka P.O. Box 33304-10101, Zambia;
| | - Yeneneh Belayneh
- USAID’s Bureau for Humanitarian Assistance (BHA) and Technical and Program Quality (TPQ), 1300 Pennsylvania Avenue, Washington, DC 20523, USA;
| | - Nicolas Delabays
- Research Institute Land Nature Environment, Geneva School of Engineering Architecture and Landscape, HES-SO University of Applied Sciences and Arts Western Switzerland, CH-1254 Jussy, Switzerland; (I.B.); (N.D.)
| | - François Lefort
- Research Institute Land Nature Environment, Geneva School of Engineering Architecture and Landscape, HES-SO University of Applied Sciences and Arts Western Switzerland, CH-1254 Jussy, Switzerland; (I.B.); (N.D.)
| | - Sunday Ekesi
- International Centre of Insect Physiology and Ecology, Nairobi P.O. Box 30772-00100, Kenya; (E.R.O.); (J.E.K.); (D.M.K.); (X.C.); (B.W.M.); (R.S.C.); (S.A.M.); (S.E.); (S.S.)
| | - Sevgan Subramanian
- International Centre of Insect Physiology and Ecology, Nairobi P.O. Box 30772-00100, Kenya; (E.R.O.); (J.E.K.); (D.M.K.); (X.C.); (B.W.M.); (R.S.C.); (S.A.M.); (S.E.); (S.S.)
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16
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Boumendil L, Fontaine M, Lévy V, Pacchiardi K, Itzykson R, Biard L. Drug combinations screening using a Bayesian ranking approach based on dose-response models. Biom J 2024; 66:e2200332. [PMID: 37984849 DOI: 10.1002/bimj.202200332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 05/05/2023] [Accepted: 06/15/2023] [Indexed: 11/22/2023]
Abstract
Drug combinations have been of increasing interest in recent years for the treatment of complex diseases such as cancer, as they could reduce the risk of drug resistance. Moreover, in oncology, combining drugs may allow tackling tumor heterogeneity. Identifying potent combinations can be an arduous task since exploring the full dose-response matrix of candidate combinations over a large number of drugs is costly and sometimes unfeasible, as the quantity of available biological material is limited and may vary across patients. Our objective was to develop a rank-based screening approach for drug combinations in the setting of limited biological resources. A hierarchical Bayesian 4-parameter log-logistic (4PLL) model was used to estimate dose-response curves of dose-candidate combinations based on a parsimonious experimental design. We computed various activity ranking metrics, such as the area under the dose-response curve and Bliss synergy score, and we used the posterior distributions of ranks and the surface under the cumulative ranking curve to obtain a comprehensive final ranking of combinations. Based on simulations, our proposed method achieved good operating characteristics to identifying the most promising treatments in various scenarios with limited sample sizes and interpatient variability. We illustrate the proposed approach on real data from a combination screening experiment in acute myeloid leukemia.
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Affiliation(s)
- Luana Boumendil
- Université Paris Cité, INSERM U1153, Team ECSTRRA, Paris, France
| | - Morgane Fontaine
- Université Paris Cité, Génomes, biologie cellulaire et thérapeutique U944, INSERM, CNRS, Paris, France
| | - Vincent Lévy
- Université Paris Cité, INSERM U1153, Team ECSTRRA, Paris, France
- Sorbonne Paris Nord, Unité de Recherche Clinique, Hôpital Avicenne, Assistance Publique-Hôpitaux de Paris, Bobigny, France
| | - Kim Pacchiardi
- Université Paris Cité, Génomes, biologie cellulaire et thérapeutique U944, INSERM, CNRS, Paris, France
- Laboratoire d'Hématologie, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Raphaël Itzykson
- Université Paris Cité, Génomes, biologie cellulaire et thérapeutique U944, INSERM, CNRS, Paris, France
- Service Hématologie Adultes, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Lucie Biard
- Université Paris Cité, INSERM U1153, Team ECSTRRA, Paris, France
- Service de Biostatistique et Information Médicale, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris, Paris, France
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17
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Han Y, Sun Y, Ma H, Wang R, Lan Y, Gao H, Huang Z. Target-site and non-target-site based resistance to clodinafop-propargyl in wild oats (Avena fatua L.). PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 197:105650. [PMID: 38072525 DOI: 10.1016/j.pestbp.2023.105650] [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: 07/04/2023] [Revised: 10/04/2023] [Accepted: 10/13/2023] [Indexed: 12/18/2023]
Abstract
Wild oat (Avena fatua L.) is a common and problematic weed in wheat fields in China. In recent years, farmers found it increasingly difficult to control A. fatua using acetyl-CoA carboxylase (ACCase)-inhibiting herbicides. The purpose of this study was to identify the molecular basis of clodinafop-propargyl resistance in A. fatua. In comparison to the S1496 population, whole dose response studies revealed that the R1623 and R1625 populations were 71.71- and 67.76-fold resistant to clodinafop-propargyl, respectively. The two resistant A. fatua populations displayed high resistance to fenoxaprop-p-ethyl (APP) and low resistance to clethodim (CHD) and pinoxaden (PPZ), but they were still sensitive to the ALS inhibitors mesosulfuron-methyl and pyroxsulam. An Ile-2041-Asn mutation was identified in both resistant individual plants. The copy number and relative expression of the ACCase gene in the resistant population were not significantly different from those in the S1496 population. Under the application of 2160 g ai ha -1 of clodinafop-propargyl, the fresh weight of the R1623 population was reduced to 74.9%; however, pretreatment with the application of the cytochrome P450 inhibitor malathion and the GST inhibitor NBD-Cl reduced the fresh weight to 50.91% and 47.16%, respectively, which proved the presence of metabolic resistance. This is the first report of an Ile-2041-Asn mutation and probable metabolic resistance in A. fatua, resulting in resistance to clodinafop-propargyl.
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Affiliation(s)
- Yujun Han
- College of Plant Protection, Northeast Agricultural University, Harbin 150030, China
| | - Ying Sun
- College of Plant Protection, Northeast Agricultural University, Harbin 150030, China; State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Hong Ma
- College of Plant Protection, Northeast Agricultural University, Harbin 150030, China
| | - Ruolin Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Yuning Lan
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Haifeng Gao
- Institute of Plant Protection, Xinjiang Academy of Agricultural Sciences, Key Laboratory of Integrated Pest Management on Crop in Northwestern Oasis, Urumqi 830091, China.
| | - Zhaofeng Huang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
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18
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Bustad E, Mudrock E, Nilles EM, McQuate A, Bergado M, Gu A, Galitan L, Gleason N, Ou HC, Raible DW, Hernandez RE, Ma S. In vivo screening for toxicity-modulating drug interactions identifies antagonism that protects against ototoxicity in zebrafish. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.08.566159. [PMID: 37986751 PMCID: PMC10659329 DOI: 10.1101/2023.11.08.566159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Ototoxicity is a debilitating side effect of over 150 medications with diverse mechanisms of action, many of which could be taken concurrently to treat multiple conditions. Approaches for preclinical evaluation of drug interactions that might impact ototoxicity would facilitate design of safer multi-drug regimens and mitigate unsafe polypharmacy by flagging combinations that potentially cause adverse interactions for monitoring. They may also identify protective agents that antagonize ototoxic injury. To address this need, we have developed a novel workflow that we call Parallelized Evaluation of Protection and Injury for Toxicity Assessment (PEPITA), which empowers high-throughput, semi-automated quantification of ototoxicity and otoprotection in zebrafish larvae. By applying PEPITA to characterize ototoxic drug interaction outcomes, we have discovered antagonistic interactions between macrolide and aminoglycoside antibiotics that confer protection against aminoglycoside-induced damage to lateral line hair cells in zebrafish larvae. Co-administration of either azithromycin or erythromycin in zebrafish protected against damage from a broad panel of aminoglycosides, at least in part via inhibiting drug uptake into hair cells via a mechanism independent from hair cell mechanotransduction. Conversely, combining macrolides with aminoglycosides in bacterial inhibition assays does not show antagonism of antimicrobial efficacy. The proof-of-concept otoprotective antagonism suggests that combinatorial interventions can potentially be developed to protect against other forms of toxicity without hindering on-target drug efficacy.
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19
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Porter DE, Morris JM, Trifari MP, Wooller MJ, Westley PAH, Gorman KB, Barst BD. Acute Toxicity of Copper to Three Species of Pacific Salmon Fry in Water with Low Hardness and Low Dissolved Organic Carbon. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2023; 42:2440-2452. [PMID: 37493065 DOI: 10.1002/etc.5724] [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: 02/14/2023] [Revised: 03/11/2023] [Accepted: 07/21/2023] [Indexed: 07/27/2023]
Abstract
Proposed development of a mine within Alaska's Bristol Bay watershed (USA) has raised concerns about the potential impact of copper (Cu) on Pacific salmon (Oncorhynchus spp.). We conducted 96-h flow-through bioassays using low-hardness and low dissolved organic carbon water to determine the acute lethal toxicity of Cu to sockeye (Oncorhynchus nerka), Chinook (Oncorhynchus tshawytscha), and coho salmon (Oncorhynchus kisutch) fry. We aimed to determine Cu toxicity under field-relevant water quality conditions and to assess three methods of calculating ambient Cu criteria: the biotic ligand model (BLM), a multiple linear regression model endorsed by the US Environmental Protection Agency, and the hardness-based model currently used by the State of Alaska. The criteria generated by all models were below 20% lethal Cu concentrations by factors ranging from 2.2 to 54.3, indicating that all criteria would be protective against mortality. The multiple linear regression-based criteria were the most conservative and were comparable to BLM-based criteria. The median lethal concentrations (LC50s) for sockeye, Chinook, and coho were 35.2, 23.9, and 6.3 µg Cu/L, respectively. We also used the BLM to predict LC50s for each species. Model predictions differed from empirical LC50s by factors of 0.7 for sockeye and Chinook salmon, and 1.1 for coho salmon. These differences fell within the acceptable range of ±2, indicating the model's accuracy. We calculated critical lethal Cu accumulation values for each species to account for differing water chemistry in each bioassay; the present study revealed that coho salmon were most sensitive to Cu, followed by sockeye and Chinook salmon. Our findings underscore the importance of considering site- and species-specific factors when modeling Cu toxicity. The empirical data we present may enhance Cu risk assessments for Pacific salmon. Environ Toxicol Chem 2023;42:2440-2452. © 2023 SETAC.
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Affiliation(s)
- Drew E Porter
- College of Fisheries and Ocean Sciences, University of Alaska Fairbanks, Fairbanks, Alaska, USA
- Water and Environment Research Center, Institute of Northern Engineering, University of Alaska Fairbanks, Fairbanks, Alaska, USA
| | | | - Michelle P Trifari
- College of Fisheries and Ocean Sciences, University of Alaska Fairbanks, Fairbanks, Alaska, USA
- Water and Environment Research Center, Institute of Northern Engineering, University of Alaska Fairbanks, Fairbanks, Alaska, USA
| | - Matthew J Wooller
- College of Fisheries and Ocean Sciences, University of Alaska Fairbanks, Fairbanks, Alaska, USA
- Water and Environment Research Center, Institute of Northern Engineering, University of Alaska Fairbanks, Fairbanks, Alaska, USA
- Alaska Stable Isotope Facility, University of Alaska Fairbanks, Fairbanks, Alaska, USA
| | - Peter A H Westley
- College of Fisheries and Ocean Sciences, University of Alaska Fairbanks, Fairbanks, Alaska, USA
| | - Kristen B Gorman
- College of Fisheries and Ocean Sciences, University of Alaska Fairbanks, Fairbanks, Alaska, USA
| | - Benjamin D Barst
- Water and Environment Research Center, Institute of Northern Engineering, University of Alaska Fairbanks, Fairbanks, Alaska, USA
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20
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Kappenberg F, Rahnenführer J. Information sharing in high-dimensional gene expression data for improved parameter estimation in concentration-response modelling. PLoS One 2023; 18:e0293180. [PMID: 37862297 PMCID: PMC10588876 DOI: 10.1371/journal.pone.0293180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 10/07/2023] [Indexed: 10/22/2023] Open
Abstract
In toxicological concentration-response studies, a frequent goal is the determination of an 'alert concentration', i.e. the lowest concentration where a notable change in the response in comparison to the control is observed. In high-throughput gene expression experiments, e.g. based on microarray or RNA-seq technology, concentration-response profiles can be measured for thousands of genes simultaneously. One approach for determining the alert concentration is given by fitting a parametric model to the data which allows interpolation between the tested concentrations. It is well known that the quality of a model fit improves with the number of measured data points. However, adding new replicates for existing concentrations or even several replicates for new concentrations is time-consuming and expensive. Here, we propose an empirical Bayes approach to information sharing across genes, where in essence a weighted mean of the individual estimate for one specific parameter of a fitted model and the mean of all estimates of the entire set of genes is calculated as a result. Results of a controlled plasmode simulation study show that for many genes a notable improvement in terms of the mean squared error (MSE) between estimate and true underlying value of the parameter can be observed. However, for some genes, the MSE increases, and this cannot be prevented by using a more sophisticated prior distribution in the Bayesian approach.
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21
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Matyja K. Sublethal effects of binary mixtures of Cu 2+ and Cd 2+ on Daphnia magna: Standard Dynamic Energy Budget (DEB) model analysis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 334:122142. [PMID: 37414122 DOI: 10.1016/j.envpol.2023.122142] [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: 03/16/2023] [Revised: 06/30/2023] [Accepted: 07/03/2023] [Indexed: 07/08/2023]
Abstract
Dynamic Energy Budget theory (DEB) describes mass and energy fluxes that occur in living organisms. DEB models were successfully used to assess the influence of stress, including toxic substances, and changes in pH and temperature, on different organisms. In this study, the Standard DEB model was used to evaluate the toxicity of copper and cadmium ions and their binary mixtures on Daphnia magna. Both metal ions have a significant influence on daphnia growth and reproduction. Different physiological modes of action (pMoA) were applied to primary DEB model parameters. Model predictions for chosen modes of interaction of mixture components were evaluated. The goodness of model fit and the model prediction was assessed to indicate the most likely pMoA and interaction mode. Copper and cadmium influence more than one DEB model primary parameter. Different pMoAs can result in similar model fits, and therefore it is difficult to identify pMoA only by evaluation of the goodness of fit of the model to the growth and reproduction data. Some critical discussion and ideas for model development are therefore provided.
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Affiliation(s)
- Konrad Matyja
- Wroclaw University of Science and Technology, Faculty of Chemistry, Department of Micro, Nano, and Bioprocess Engineering, Ul. Norwida 4/6, 50-373, Wrocław, Poland.
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22
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Kappenberg F, Duda JC, Schürmeyer L, Gül O, Brecklinghaus T, Hengstler JG, Schorning K, Rahnenführer J. Guidance for statistical design and analysis of toxicological dose-response experiments, based on a comprehensive literature review. Arch Toxicol 2023; 97:2741-2761. [PMID: 37572131 PMCID: PMC10474994 DOI: 10.1007/s00204-023-03561-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 07/13/2023] [Indexed: 08/14/2023]
Abstract
The analysis of dose-response, concentration-response, and time-response relationships is a central component of toxicological research. A major decision with respect to the statistical analysis is whether to consider only the actually measured concentrations or to assume an underlying (parametric) model that allows extrapolation. Recent research suggests the application of modelling approaches for various types of toxicological assays. However, there is a discrepancy between the state of the art in statistical methodological research and published analyses in the toxicological literature. The extent of this gap is quantified in this work using an extensive literature review that considered all dose-response analyses published in three major toxicological journals in 2021. The aspects of the review include biological considerations (type of assay and of exposure), statistical design considerations (number of measured conditions, design, and sample sizes), and statistical analysis considerations (display, analysis goal, statistical testing or modelling method, and alert concentration). Based on the results of this review and the critical assessment of three selected issues in the context of statistical research, concrete guidance for planning, execution, and analysis of dose-response studies from a statistical viewpoint is proposed.
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Affiliation(s)
- Franziska Kappenberg
- Department of Statistics, TU Dortmund University, Vogelpothsweg 87, 44227, Dortmund, Germany.
| | - Julia C Duda
- Department of Statistics, TU Dortmund University, Vogelpothsweg 87, 44227, Dortmund, Germany
| | - Leonie Schürmeyer
- Department of Statistics, TU Dortmund University, Vogelpothsweg 87, 44227, Dortmund, Germany
| | - Onur Gül
- Department of Statistics, TU Dortmund University, Vogelpothsweg 87, 44227, Dortmund, Germany
| | - Tim Brecklinghaus
- Leibniz Research Centre for Working Environment and Human Factors at the Technical University of Dortmund (IfADo), Ardeystrasse 67, 44139, Dortmund, Germany
| | - Jan G Hengstler
- Leibniz Research Centre for Working Environment and Human Factors at the Technical University of Dortmund (IfADo), Ardeystrasse 67, 44139, Dortmund, Germany
| | - Kirsten Schorning
- Department of Statistics, TU Dortmund University, Vogelpothsweg 87, 44227, Dortmund, Germany
| | - Jörg Rahnenführer
- Department of Statistics, TU Dortmund University, Vogelpothsweg 87, 44227, Dortmund, Germany
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23
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Walden MA, Loope KJ, Hunter EA, Divers SJ, Comolli JR, Esque TC, Shoemaker KT. Testosterone identifies hatchling sex for Mojave desert tortoises (Gopherus agassizii). Sci Rep 2023; 13:14818. [PMID: 37684318 PMCID: PMC10491821 DOI: 10.1038/s41598-023-41677-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 08/30/2023] [Indexed: 09/10/2023] Open
Abstract
The threatened Mojave desert tortoise (Gopherus agassizii) exhibits temperature-dependent sex determination, and individuals appear externally sexually monomorphic until sexual maturity. A non-surgical sex identification method that is suitable for a single in situ encounter with hatchlings is essential for minimizing handling of wild animals. We tested (1) whether plasma testosterone quantified by enzyme-linked immunosorbent assay differentiated males from females in 0-3 month old captive hatchlings, and (2) whether an injection of follicle-stimulating hormone (FSH) differentially elevates testosterone in male hatchlings to aid in identifying sex. We validated sex by ceolioscopic (laparoscopic) surgery. We then fit the testosterone concentrations to lognormal distributions and identified the concentration below which individuals are more likely female, and above which individuals are more likely male. Using a parametric bootstrapping procedure, we estimated a 0.01-0.04% misidentification rate for naïve testosterone samples, and a 1.26-1.39% misidentification rate for challenged (post-FSH injection) testosterone samples. Quantification of plasma testosterone concentration from small volume (0.1 mL) blood samples appears to be a viable, highly accurate method to identify sex of 0-3 month old hatchlings and could be a valuable tool for conservation measures and investigation of trends and variation in sex ratios for in situ wild nests.
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Affiliation(s)
- M A Walden
- Department of Natural Resources and Environmental Science, University of Nevada, Reno, Reno, NV, USA.
- Department of Fisheries Biology, California State Polytechnic University, Humboldt, Arcata, CA, USA.
| | - Kevin J Loope
- Department of Fish and Wildlife Conservation, Virginia Tech, Blacksburg, VA, USA
- Department of Biology, Georgia Southern University, Statesboro, GA, USA
| | - Elizabeth A Hunter
- U.S. Geological Survey, Virginia Cooperative Fish and Wildlife Research Unit, Department of Fish and Wildlife Conservation, Virginia Tech, Blacksburg, VA, USA
| | - Stephen J Divers
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - Jessica R Comolli
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
- Department of Veterinary Services, Miami Seaquarium, Key Biscayne, FL, USA
| | - Todd C Esque
- U.S. Geological Survey, Western Ecological Research Center, Boulder City, NV, USA
| | - Kevin T Shoemaker
- Department of Natural Resources and Environmental Science, University of Nevada, Reno, Reno, NV, USA
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24
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De Laender F, Carpentier C, Carletti T, Song C, Rumschlag SL, Mahon MB, Simonin M, Meszéna G, Barabás G. Mean species responses predict effects of environmental change on coexistence. Ecol Lett 2023; 26:1535-1547. [PMID: 37337910 DOI: 10.1111/ele.14278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 05/21/2023] [Accepted: 05/23/2023] [Indexed: 06/21/2023]
Abstract
Environmental change research is plagued by the curse of dimensionality: the number of communities at risk and the number of environmental drivers are both large. This raises the pressing question if a general understanding of ecological effects is achievable. Here, we show evidence that this is indeed possible. Using theoretical and simulation-based evidence for bi- and tritrophic communities, we show that environmental change effects on coexistence are proportional to mean species responses and depend on how trophic levels on average interact prior to environmental change. We then benchmark our findings using relevant cases of environmental change, showing that means of temperature optima and of species sensitivities to pollution predict concomitant effects on coexistence. Finally, we demonstrate how to apply our theory to the analysis of field data, finding support for effects of land use change on coexistence in natural invertebrate communities.
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Grants
- 2.5020.11, GEQ U.G006.15, 1610468, RW/GEQ2016 et U FNRS-FRFC
- NKFI-123796 Hungarian National Research, Development and Innovation Offi
- 2.5020.11, GEQ U.G006.15, 1610468, RW/GEQ2016 et U Université de Namur
- NARC fellowsh Université de Namur
- 2.5020.11, GEQ U.G006.15, 1610468, RW/GEQ2016 et U Waalse Gewest
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Affiliation(s)
- Frederik De Laender
- Research Unit of Environmental and Evolutionary Biology, naXys, ILEE, University of Namur, Namur, Belgium
| | - Camille Carpentier
- Research Unit of Environmental and Evolutionary Biology, naXys, ILEE, University of Namur, Namur, Belgium
| | - Timoteo Carletti
- Department of Mathematics and naXys, University of Namur, Namur, Belgium
| | - Chuliang Song
- Department of Ecology and Evolutionary Biology, Princeton University, Princeton, New Jersey, USA
| | - Samantha L Rumschlag
- Department of Biological Sciences, Environmental Change Initiative, and Eck Institute for Global Health, University of Notre Dame, Notre Dame, Indiana, USA
| | - Michael B Mahon
- Department of Biological Sciences, Environmental Change Initiative, and Eck Institute for Global Health, University of Notre Dame, Notre Dame, Indiana, USA
| | - Marie Simonin
- University of Angers, Institut Agro, INRAE, IRHS, SFR QUASAV, Angers, France
| | - Géza Meszéna
- Department of Biological Physics, Eötvös Loránd University, Budapest, Hungary
- Institute of Evolution, Centre for Ecological Research, Budapest, Hungary
| | - György Barabás
- Institute of Evolution, Centre for Ecological Research, Budapest, Hungary
- Division of Ecological and Environmental Modeling, Linköping University, Linköping, Sweden
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25
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Möllenhoff K, Schorning K, Kappenberg F. Identifying alert concentrations using a model-based bootstrap approach. Biometrics 2023; 79:2076-2088. [PMID: 36385693 DOI: 10.1111/biom.13799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 10/31/2022] [Indexed: 11/18/2022]
Abstract
The determination of alert concentrations, where a pre-specified threshold of the response variable is exceeded, is an important goal of concentration-response studies. The traditional approach is based on investigating the measured concentrations and attaining statistical significance of the alert concentration by using a multiple t-test procedure. In this paper, we propose a new model-based method to identify alert concentrations, based on fitting a concentration-response curve and constructing a simultaneous confidence band for the difference of the response of a concentration compared to the control. In order to obtain these confidence bands, we use a bootstrap approach which can be applied to any functional form of the concentration-response curve. This particularly offers the possibility to investigate also those situations where the concentration-response relationship is not monotone and, moreover, to detect alerts at concentrations which were not measured during the study, providing a highly flexible framework for the problem at hand.
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26
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Berto B, Erickson TE, Ritchie AL. Improving Seed Morphology and Germination Potential in Australian Native Grasses Using Seed Enhancement Technologies. PLANTS (BASEL, SWITZERLAND) 2023; 12:2432. [PMID: 37446992 DOI: 10.3390/plants12132432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/13/2023] [Accepted: 06/14/2023] [Indexed: 07/15/2023]
Abstract
Difficult to handle seed material and poor germination commonly limit the uptake of native grasses in restoration and commercial-scale seeding efforts. Seed enhancement technologies (SETs) offer valuable solutions for improving the handling of seed material and optimising germination. This study considered eight widespread Australian native grasses; two representative of Mediterranean to temperate climates ('cool-climate' species) and six representative of arid to subtropical climates ('warm-climate' species). Through a series of experiments, this study logically selected and applied SET treatments to improve seed handling and germination for each study species. Seed handling was prioritised and addressed using flash flaming and/or acid digestion, while hydropriming was used following seed-handling treatments to enhance germination. Flash flaming and acid digestion were both applied to successfully reduce or remove bulky floret structures while maintaining or improving germination. Flaming at 110 ± 10 °C with continuous exposure for 10 min and acid digestion concentrations of 75-80% with exposure times of 1-2.5 min were generally successful. Sub-optimal concentrations of sulphuric acid often compromised germination. Hydropriming did not improve germination outcomes when applied following flaming or acid digestion. Optimising SETs for germination, emergence and establishment in different environments, and the viability and costs of application on larger seed batches are key considerations for the implementation and upscaling of SETs in the future.
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Affiliation(s)
- Bianca Berto
- School of Biological Sciences, The University of Western Australia, Crawley, WA 6009, Australia
- Kings Park Science, Department of Biodiversity, Conservation and Attractions, Kings Park, WA 6005, Australia
| | - Todd E Erickson
- Kings Park Science, Department of Biodiversity, Conservation and Attractions, Kings Park, WA 6005, Australia
- Centre for Engineering Innovation: Agriculture and Ecological Restoration, School of Agriculture and Environment, The University of Western Australia, Crawley, WA 6009, Australia
| | - Alison L Ritchie
- School of Biological Sciences, The University of Western Australia, Crawley, WA 6009, Australia
- Kings Park Science, Department of Biodiversity, Conservation and Attractions, Kings Park, WA 6005, Australia
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27
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Yang YT, Ni HG. Predictive in silico models for aquatic toxicity of cosmetic and personal care additive mixtures. WATER RESEARCH 2023; 236:119981. [PMID: 37084578 DOI: 10.1016/j.watres.2023.119981] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 04/11/2023] [Accepted: 04/12/2023] [Indexed: 05/03/2023]
Abstract
As emerging environmental contaminants, cosmetic and personal care additives (CPCAs) may have less oversight than other consumer products. Their continuous release and pseudopersistence could cause long-term harm to the aquatic environment. Since CPCAs generally exist in the form of mixtures in the environment, prediction and analysis of their mixture toxicity are crucial for ecological risk assessment. In this study, the acute toxicity of five typical CPCA mixtures to Daphnia magna was tested. The combined toxicity of binary mixtures was examined with the traditional concentration addition (CA) and independent action (IA) model. Overall, the synergistic effect of the five CPCAs may be caused mainly by methylparaben. In addition, reliable approaches for quantitative structure-activity relationship (QSAR) model development were explored. Specifically, 18 QSAR models were developed by three dataset partitioning techniques (Kennard-Stone's algorithm division, Euclidean distance based division, and sorted activity based division), two descriptor filtering methods (genetic algorithm and stepwise multiple linear regression) and three regression methods (multiple linear regression, partial least squares and support vector machine). Sixteen equations were applied for the calculation of the mixture descriptors to screen the functional expression of the mixture descriptors with the largest contribution to the mixture toxicity. A new comprehensive parameter that integrates internal and external validation was proposed for QSAR models evaluation. The mixture toxicity is mainly related the 3D distribution of atomic masses and the spatial distribution of the molecule electronic properties. Rigorously validated and externally predictive QSAR models were developed for predicting the toxicity of binary CPCAs mixtures with any ratio, in the applicability domain. The best possible work frame for construction and validation of QSAR models to provide reliable predictions on the mixture toxicity was proposed.
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Affiliation(s)
- Yu-Ting Yang
- School of Urban Planning and Design, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Hong-Gang Ni
- School of Urban Planning and Design, Peking University Shenzhen Graduate School, Shenzhen 518055, China.
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28
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Jin B, Dunson DB, Rager JE, Reif DM, Engel SM, Herring AH. Bayesian matrix completion for hypothesis testing. J R Stat Soc Ser C Appl Stat 2023; 72:254-270. [PMID: 37197290 PMCID: PMC10184491 DOI: 10.1093/jrsssc/qlac005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 09/26/2021] [Accepted: 10/07/2022] [Indexed: 03/17/2023]
Abstract
We aim to infer bioactivity of each chemical by assay endpoint combination, addressing sparsity of toxicology data. We propose a Bayesian hierarchical framework which borrows information across different chemicals and assay endpoints, facilitates out-of-sample prediction of activity for chemicals not yet assayed, quantifies uncertainty of predicted activity, and adjusts for multiplicity in hypothesis testing. Furthermore, this paper makes a novel attempt in toxicology to simultaneously model heteroscedastic errors and a nonparametric mean function, leading to a broader definition of activity whose need has been suggested by toxicologists. Real application identifies chemicals most likely active for neurodevelopmental disorders and obesity.
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Affiliation(s)
- Bora Jin
- Duke University, Durham, NC, USA
| | | | - Julia E Rager
- University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - David M Reif
- North Carolina State University, Raleigh, NC, USA
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29
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Rollin M, Coulaud R, Rocher B, Billoir E, Geffard O, Duflot A, Fromont C, Boulangé-Lecomte C, Le Foll F, Xuereb B. Effects of Chemical Compounds on the Activity of the N-acetyl-β-D-Glucosaminidase of the Marine Prawn, Palaemon serratus: Screening In Vitro. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2023; 42:846-858. [PMID: 36692111 DOI: 10.1002/etc.5567] [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: 09/20/2022] [Revised: 11/08/2022] [Accepted: 01/22/2023] [Indexed: 06/17/2023]
Abstract
N-acetyl-β-D-glucosaminidase (NAGase) is important for crustaceans because the enzyme activity is necessary for the molting process. The present study aimed to assess the sensitivity of Palaemon serratus NAGase activity to a set of compounds of diverse chemical families in the context of in vitro exposures. Compounds representing different chemical families were selected according to their abundance, impact in the environment, and relevance as disruptors of the molting process. In a first step, four solvents (dimethylsulfoxide [DMSO], methanol, acetone, and ethanol) were tested to determine their suitability to dissolve hydrophobic compounds without affecting NAGase activity. Exclusively, ethanol had no effect on enzyme activity and on the integrity of the proteins present in the enzyme extract. The 18 other compounds were tested and four of these compounds, pentoxifylline, fenoxycarb, dithiocarbamate, and RH5849, showed a specific alteration on the activity of NAGase, without affecting the protein content. However, cadmium, zinc, and glyphosate showed a nonspecific alteration, affecting both the enzyme activity and the proteins, whereas ibuprofen exclusively altered the protein content. Finally, 10 of the 22 tested compounds (including DMSO, acetone, and methanol) showed a direct alteration of NAGase activity. Environ Toxicol Chem 2023;42:846-858. © 2023 SETAC.
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Affiliation(s)
- Marc Rollin
- Le Havre Normandie University, FR CNRS 3730 SCALE, UMR-INERIS 02 Environmental Stresses and Biomonitoring of Aquatic Ecosystems, Le Havre, France
| | - Romain Coulaud
- Le Havre Normandie University, FR CNRS 3730 SCALE, UMR-INERIS 02 Environmental Stresses and Biomonitoring of Aquatic Ecosystems, Le Havre, France
| | - Béatrice Rocher
- Le Havre Normandie University, FR CNRS 3730 SCALE, UMR-INERIS 02 Environmental Stresses and Biomonitoring of Aquatic Ecosystems, Le Havre, France
| | - Elise Billoir
- Laboratoire Interdisciplinaire des Environnements Continentaux, Université de Lorraine, Metz, France
| | - Olivier Geffard
- INRAE, UR RiverLy, Laboratoire d'écotoxicologie, Villeurbanne, France
| | - Aurélie Duflot
- Le Havre Normandie University, FR CNRS 3730 SCALE, UMR-INERIS 02 Environmental Stresses and Biomonitoring of Aquatic Ecosystems, Le Havre, France
| | - Chloé Fromont
- Le Havre Normandie University, FR CNRS 3730 SCALE, UMR-INERIS 02 Environmental Stresses and Biomonitoring of Aquatic Ecosystems, Le Havre, France
| | - Céline Boulangé-Lecomte
- Le Havre Normandie University, FR CNRS 3730 SCALE, UMR-INERIS 02 Environmental Stresses and Biomonitoring of Aquatic Ecosystems, Le Havre, France
| | - Frank Le Foll
- Le Havre Normandie University, FR CNRS 3730 SCALE, UMR-INERIS 02 Environmental Stresses and Biomonitoring of Aquatic Ecosystems, Le Havre, France
| | - Benoit Xuereb
- Le Havre Normandie University, FR CNRS 3730 SCALE, UMR-INERIS 02 Environmental Stresses and Biomonitoring of Aquatic Ecosystems, Le Havre, France
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30
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Diogo BS, Antunes SC, Rodrigues S. Are biopesticides safe for the environment? Effects of pyrethrum extract on the non-target species Daphnia magna. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2023; 99:104114. [PMID: 37001686 DOI: 10.1016/j.etap.2023.104114] [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: 04/02/2022] [Revised: 03/21/2023] [Accepted: 03/28/2023] [Indexed: 06/19/2023]
Abstract
Biopesticides are natural compounds considered more safe and sustainable for the environment. However, it is also important to evaluate the potential risk in non-target organisms. Pyrethrum extract (PE) is a biopesticide, widely used for agriculture, veterinary, and aquaculture. This work aimed to evaluate acute (0.6 - 40.0 µg/L; 96 h; E(L)C50 toxicity) and sub-chronic (0.7 - 1.1 µg/L; 10 d; life-history parameters) effects of PE on Daphnia magna. Moreover, a biomarkers approach using antioxidant and biotransformation capacity, lipid peroxidation (LPO), neurotoxicity, and energy reserves content were evaluated. Acute effects (mortality, changes in swimming behavior, oxidative stress, lipid peroxidation, neurotoxicity) were recorded with the increase in PE concentration. Sub-chronic assay showed an increase in energy reserves content, antioxidant parameters, and LPO demonstrating that PE unbalances oxidative metabolism. This study can conclude that PE potentiates toxic effects in D. magna and demonstrates the vulnerability of a non-target organism to PE that is considered environmentally safe.
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Affiliation(s)
- B S Diogo
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - S C Antunes
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal; CIMAR/CIIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Matosinhos, Portugal
| | - S Rodrigues
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal; CIMAR/CIIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Matosinhos, Portugal.
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31
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Feng H, Liao X, Yang R, Chen S, Zhang Z, Tong J, Liu J, Wang X. Generation, toxicity, and reduction of chlorinated byproducts: Overcome bottlenecks of electrochemical advanced oxidation technology to treat high chloride wastewater. WATER RESEARCH 2023; 230:119531. [PMID: 36580803 DOI: 10.1016/j.watres.2022.119531] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 12/21/2022] [Accepted: 12/23/2022] [Indexed: 06/17/2023]
Abstract
Electrochemical advanced oxidation process (EAOP) is recommended for high-strength refractory organics wastewater treatment, but the accompanying chlorinated byproduct generation becomes a bottleneck that limits the application of this technology to actual wastewater. In this study, we applied EAOP (0.4-40 mA cm-2) to treat ultrafiltration effluent of an actual landfill leachate, and quantitatively assessed the toxicities of the dominant chlorinated byproducts in EAOP-treated effluent. Considering both toxic effect and dose, it followed the order: active chlorine > chlorate > perchlorate > organochlorines. The toxic active chlorine could spontaneously decompose by settling. And secondary bioreactor originally serving for denitrification could be used to reduce perchlorate and chlorate. The effects of residual active chlorine and extra carbon addition on simultaneous denitrification, perchlorate, and chlorate reduction were investigated. It seemed that 20 mg of active chlorine was an acceptable level to bioactivity, and sufficient electron donors favored the removal of chlorate and perchlorate. Pseudomonas was identified as an active chlorine tolerant chlorate-reducing bacteria. And Thauera was responsible for perchlorate reduction under the conditions of sufficient carbon source supply. Our results confirmed that the perchlorate and chlorate concentrations in the effluent below their health advisory levels were achievable, solving the issue of toxic chlorinated byproduct generation during EAOP. This study provided a solution to realistic application of EAOP to treat high chloride wastewater.
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Affiliation(s)
- Hualiang Feng
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo 315830, China
| | - Xinqing Liao
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ruili Yang
- Yancheng Institute of Technology, Jiangsu, Yancheng 224051, China
| | - Shaohua Chen
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Zhaoji Zhang
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo 315830, China
| | - Jinsheng Tong
- Longyan Water Environment Development Co. Ltd., Longyan 364000, China
| | - Jiajian Liu
- Longyan Water Environment Development Co. Ltd., Longyan 364000, China
| | - Xiaojun Wang
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
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Application of the weibull model to describe the kinetic behaviors of thiol decolorizers in chlorogenic acid-lysine solutions. J FOOD ENG 2023. [DOI: 10.1016/j.jfoodeng.2022.111287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Chmilar SL, Laird RA. Effects of parental age on salt stress tolerance in an aquatic plant. OIKOS 2023. [DOI: 10.1111/oik.09218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
| | - Robert A. Laird
- Dept of Biological Sciences, Univ. of Lethbridge Lethbridge AB Canada
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Mooney TJ, Harford AJ, Hanley J, Walker S, Sandgren M, Jansen A, Humphrey C. Seasonal responses of macroinvertebrate assemblages to magnesium in a seasonally flowing stream. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 316:120586. [PMID: 36379293 DOI: 10.1016/j.envpol.2022.120586] [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: 04/13/2022] [Revised: 10/04/2022] [Accepted: 11/01/2022] [Indexed: 06/16/2023]
Abstract
Macroinvertebrates can be highly sensitive to elevated salinity in freshwater environments, and are known to respond to saline discharges. Magnesium (Mg) is a mine-related contaminant and is a potential environmental risk to a seasonally-flowing, receiving water stream in Kakadu National Park, located in the wet-dry tropics of Australia. The macroinvertebrate assemblage in the stream in the was characterised at four hydrographic phases, from early wet season flow to early dry season pools at flow cessation. On each of the four occasions representing the respective phases, individuals from the most abundant macroinvertebrate species present were collected and acutely exposed to a range (up to 19) of Mg concentrations under laboratory conditions. Sensitivity of taxa to Mg ranged between 39 mg/L Mg (Caenidae: Tasmanocoenis spp.) and 4400 mg/L Mg (Dytiscidae: Clypeodytes feryi), based on the 50% Lethal Concentration (LC50). Characterisation of the macroinvertebrate assemblage at each hydrographic phase indicated the seasons when Mg-sensitive species were present. Whilst no statistical differences in measures of seasonal sensitivity were found, the macroinvertebrate assemblages present during the early flow period had higher Mg-sensitivity than the assemblages present during other hydrographic phases. This could be attributed to the greater relative proportions of Mg-sensitive taxa (e.g. Ephemeroptera) present at early flow compared to greater relative proportions of more Mg-tolerant taxa (C. feryi and Hydacarina spp.) present during later hydrograph phases, especially periods of lower, or no, flow.
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Affiliation(s)
- Thomas J Mooney
- Environmental Research Institute of the Supervising Scientist, Australian Government Department of Agriculture, Water and the Environment, Darwin, NT, Australia.
| | - Andrew J Harford
- Environmental Research Institute of the Supervising Scientist, Australian Government Department of Agriculture, Water and the Environment, Darwin, NT, Australia
| | - Julie Hanley
- Environmental Research Institute of the Supervising Scientist, Australian Government Department of Agriculture, Water and the Environment, Darwin, NT, Australia
| | - Samantha Walker
- Environmental Research Institute of the Supervising Scientist, Australian Government Department of Agriculture, Water and the Environment, Darwin, NT, Australia
| | - Mia Sandgren
- Environmental Research Institute of the Supervising Scientist, Australian Government Department of Agriculture, Water and the Environment, Darwin, NT, Australia
| | - Andrew Jansen
- Environmental Research Institute of the Supervising Scientist, Australian Government Department of Agriculture, Water and the Environment, Darwin, NT, Australia
| | - Chris Humphrey
- Environmental Research Institute of the Supervising Scientist, Australian Government Department of Agriculture, Water and the Environment, Darwin, NT, Australia
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35
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Gestin O, Lacoue-Labarthe T, Delorme N, Garnero L, Geffard O, Lopes C. Influence of the exposure concentration of dissolved cadmium on its organotropism, toxicokinetic and fate in Gammarus fossarum. ENVIRONMENT INTERNATIONAL 2023; 171:107673. [PMID: 36580734 DOI: 10.1016/j.envint.2022.107673] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 11/03/2022] [Accepted: 11/29/2022] [Indexed: 06/17/2023]
Abstract
Information on the relationship between the exposure concentrations of metals and their biodistribution among organs remained scarce in invertebrates. The objective of this study was to investigate the effects of Cd concentration on the organotropism, toxico-kinetic and fate of this metal in different organs of gammarids exposed to dissolved radioisotope 109Cd. Gammarids male were exposed for 7 days to three environmental Cd concentrations (i.e. 4, 52 and 350 ng.L-1) before being placed in depuration conditions (i.e. uncontaminated water). At several sampling times, Cd concentrations were determined by 109Cd γ-counting in water, caeca, cephalon, gills, intestine and remaining tissues. Bioconcentration Factors (BCF) and Cd relative proportions in organs were calculated to assess the exposure concentration effect on the bioaccumulation capacities. The dependance of the organ-specific kinetic parameters to Cd water concentrations were estimated by fitting nested one-compartment toxico-kinetic (TK) models to both the accumulation and depuration data, by Bayesian inference. Then, for each Cd concentrations, the metal exchanges among organs over time were formalized by a multi-compartments TK model fitted to all organ data simultaneously. Our results highlighted that, at the end of the exposure phase, BCF and Cd relative proportions, in each organ, were not significantly modulated by water concentrations. Kinetically, Cd accumulation rates in all organs (except intestines) were depended on the exposure concentration, but not the elimination rates. The in vivo management of Cd (i.e. metal exchanges among organs) remained qualitatively unchanged according to exposure concentration. All these results also highlighted key role of that organs in the management of Cd: bioconcentration by caeca, storage by gills and main entry pathway by intestine. This study shows the interest of implementing TK approaches to test the effect of environmental factors on bioaccumulation, inter-organ exchanges and fate of contaminants in invertebrate body to enhance the understanding of the toxicity risk.
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Affiliation(s)
- Ophélia Gestin
- Univ Lyon, Université Lyon 1, CNRS, Laboratoire de Biométrie et Biologie Evolutive UMR 5558, 69622 Villeurbanne, France; Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS - Université de la Rochelle, 2, rue Olympe de Gouges, 17000 La Rochelle, France; INRAE, RiverLy, Ecotoxicology Laboratory, 5 Avenue de la Doua, CS20244, 69625 Villeurbanne Cedex, France.
| | - Thomas Lacoue-Labarthe
- Littoral Environnement et Sociétés (LIENSs), UMR 7266 CNRS - Université de la Rochelle, 2, rue Olympe de Gouges, 17000 La Rochelle, France.
| | - Nicolas Delorme
- INRAE, RiverLy, Ecotoxicology Laboratory, 5 Avenue de la Doua, CS20244, 69625 Villeurbanne Cedex, France.
| | - Laura Garnero
- INRAE, RiverLy, Ecotoxicology Laboratory, 5 Avenue de la Doua, CS20244, 69625 Villeurbanne Cedex, France.
| | - Olivier Geffard
- INRAE, RiverLy, Ecotoxicology Laboratory, 5 Avenue de la Doua, CS20244, 69625 Villeurbanne Cedex, France.
| | - Christelle Lopes
- Univ Lyon, Université Lyon 1, CNRS, Laboratoire de Biométrie et Biologie Evolutive UMR 5558, 69622 Villeurbanne, France.
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36
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Agathokleous E. Environmental pollution impacts: Are p values over-valued? THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 850:157807. [PMID: 35934042 DOI: 10.1016/j.scitotenv.2022.157807] [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: 05/01/2022] [Revised: 07/30/2022] [Accepted: 07/30/2022] [Indexed: 06/15/2023]
Abstract
An examination revealed the dominance of the published literature of environmental science by p values. Meanwhile, the use of effect size has been neglected in publications reporting primary data, yet the size of effect is often more informative than p values inference in assessing the effects of pollution on living organisms, comparing susceptibility/resistance among organisms, and ranking pollutants according to their potency, among others. Statistical significance does not necessarily mean biological, practical, or scientific significance, and its use based on (often misinterpreted) p values reflects the average response or effect at average conditions based on an assumed linear model fit to the entire sample. However, pollution impacts and organismal responses are rarely characterized by linear and symmetric features, and dichotomous 'statistical significance' based on p values is inadequate to fully describe data and findings. Considering 'the fallacy of the average', variance, and differential response of different population percentiles in new studies would provide otherwise wasted biologically, practically, or scientifically significant information. Since p values often inform as to whether some findings warrant further examination, journals should consider mandating the reporting of effect sizes and confidence intervals, together with p values (should they be used), to provide more integrated information regarding pollution impacts. Moreover, replacing 'statistical significance' with language of evidence, especially in key components of publications, such as abstracts and conclusions, could help preventing potential misleading of the public and decision and policy makers.
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Affiliation(s)
- Evgenios Agathokleous
- School of Applied Meteorology, Nanjing University of Information Science and Technology (NUIST), Ningliu Rd. 219, Nanjing, Jiangsu 210044, China.
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37
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Matsumoto A, Terashima I, Uesono Y. A rapid and simple spectroscopic method for the determination of yeast cell viability using methylene blue. Yeast 2022; 39:607-616. [PMID: 36305512 DOI: 10.1002/yea.3819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 10/24/2022] [Accepted: 10/26/2022] [Indexed: 01/28/2023] Open
Abstract
Determination of cell viability is important in various microbiological studies. The microscopic method, counting dead cells stained by methylene blue (MB), has often been used for the determination of viability, although it is not efficient for the measurement of a large number of samples. Alternatively, some spectroscopic methods have been proposed to avoid tedious cell counting. One of these proposed methods detects the decrease in MB absorbance in the supernatant of cell suspension, because dead cells incorporate MB more efficiently than viable cells. However, at present, this spectroscopic method is rarely used due to its low throughput. Therefore, we devised a small-scale, rapid and simple method by improving several points as follows. (1) The peak wavelength of MB absorbance, 665 nm, was used to detect MB efficiently at the microtube scale. (2) The composition of the MB solution was improved by adding trisodium citrate. (3) The reaction time was shortened. And (4) the concentration ranges of both MB and cells, with which absorbance is linearly related to cell viability, were determined. The improved method enabled us to evaluate the dose-dependent toxicities of alcohols, antifungal/antimalarial quinacrine, and UV-C irradiation. The results were compatible with those of conventional microscopic counting and colony formation. The method would be applicable to automated determination and to various organisms such as bacteria and filamentous fungi which are difficult to be counted microscopically.
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Affiliation(s)
- Atsushi Matsumoto
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Ichiro Terashima
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Yukifumi Uesono
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
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38
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Planar chromatography-bioassays for the parallel and sensitive detection of androgenicity, anti-androgenicity and cytotoxicity. J Chromatogr A 2022; 1684:463582. [DOI: 10.1016/j.chroma.2022.463582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 10/13/2022] [Accepted: 10/17/2022] [Indexed: 11/24/2022]
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39
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Ganjisaffar F, Demkovich MR, Chiu JC, Zalom FG. Characterization of Field-Derived Drosophila suzukii (Diptera: Drosophilidae) Resistance to Pyrethroids in California Berry Production. JOURNAL OF ECONOMIC ENTOMOLOGY 2022; 115:1676-1684. [PMID: 35957586 DOI: 10.1093/jee/toac118] [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: 06/15/2022] [Indexed: 06/15/2023]
Abstract
The spotted-wing drosophila, Drosophila suzukii (Matsumura), is a global economic pest of berry crops and stone fruit. Since management of this pest primarily relies on calendar insecticide applications, and field-derived resistance to spinosad has already been documented in California caneberry production, there is significant concern for development of resistance to other insecticides. In this study, susceptibility of D. suzukii populations collected from caneberry and strawberry fields to two pyrethroids, zeta-cypermethrin, and bifenthrin, was assessed in 2019 and 2020. Resistance to both pyrethroids were observed in flies from all sampling sites. For flies collected from caneberries in 2019, the LC50 values ranged from 4.5 to 5.2 mg liter-1 with RR50s ranging from 7.5- to 8.7-fold. Our 2020 assays showed that susceptibility of flies to the discriminating dose of zeta-cypermethrin decreased significantly as the season progressed. For flies collected from strawberries in 2020, the LC50s ranged from 19.0 to 36.1 mg liter-1 and from 30.3 to 90.7 mg liter-1 for zeta-cypermethrin and bifenthrin, respectively. The RR50 values varied from 19.0- to 36.1-fold for zeta-cypermethrin and from 15.9- to 47.7-fold for bifenthrin. This study is the first report of field-derived pyrethroid resistance in D. suzukii from two major California berry production areas. Adoption of informed insecticide resistance management practices would be essential to prolong the efficacy of products available to control D. suzukii. Future molecular work is needed to unravel the underlying genetic mechanisms conferring the observed pyrethroid resistance and to develop robust diagnostics that can inform integrated pest management of this pest.
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Affiliation(s)
- Fatemeh Ganjisaffar
- Department of Entomology and Nematology, University of California, Davis, CA, USA
| | - Mark R Demkovich
- Department of Entomology and Nematology, University of California, Davis, CA, USA
| | - Joanna C Chiu
- Department of Entomology and Nematology, University of California, Davis, CA, USA
| | - Frank G Zalom
- Department of Entomology and Nematology, University of California, Davis, CA, USA
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40
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Fei S, Ren H. Determining the Dose-Response Curve of Exoelectrogens: A Microscale Microbial Fuel Cell Biosensor for Water Toxicity Monitoring. MICROMACHINES 2022; 13:1560. [PMID: 36295913 PMCID: PMC9609928 DOI: 10.3390/mi13101560] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 07/21/2022] [Accepted: 07/26/2022] [Indexed: 06/16/2023]
Abstract
Nowadays, the development of real-time water quality monitoring sensors is critical. However, traditional water monitoring technologies, such as enzyme-linked immunosorbent assay (ELISA), liquid chromatography, mass spectroscopy, luminescence screening, surface plasma resonance (SPR), and analysis of living bioindicators, are either time consuming or require expensive equipment and special laboratories. Because of the low cost, self-sustainability, direct current output and real-time response, microbial fuel cells (MFCs) have been implemented as biosensors for water toxicity monitoring. In this paper, we report a microscale MFC biosensor to study the dose-response curve of exoelectrogen to toxic compounds in water. The microscale MFC biosensor has an anode chamber volume of 200 μL, which requires less sample consumption for water toxicity monitoring compared with macroscale or mesoscale MFC biosensors. For the first time, the MFC biosensor is exposed to a large formaldehyde concentration range of more than 3 orders of magnitudes, from a low concentration of 1 × 10-6 g/L to a high concentration of 3 × 10-3 g/L in water, while prior studies investigated limited formaldehyde concentration ranges, such as a small concentration range of 1 × 10-4 g/L to 2 × 10-3 g/L or only one high concentration of 0.1 g/L. As a result, for the first time, a sigmoid dose-response relationship of normalized dose-response versus formaldehyde concentration in water is observed, in agreement with traditional toxicology dose-response curve obtained by other measurement techniques. The biosensor has potential applications in determining dose-response curves for toxic compounds and detecting toxic compounds in water.
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41
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Machado C, Cuco AP, Cássio F, Wolinska J, Castro BB. Antiparasitic potential of agrochemical fungicides on a non-target aquatic model (Daphnia × Metschnikowia host-parasite system). THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 833:155296. [PMID: 35429554 DOI: 10.1016/j.scitotenv.2022.155296] [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: 02/06/2022] [Revised: 03/29/2022] [Accepted: 04/11/2022] [Indexed: 06/14/2023]
Abstract
Pesticides are a major anthropogenic threat to the biodiversity of freshwater ecosystems, having the potential to affect non-target aquatic organisms and disrupt the processes in which they intervene. Important knowledge gaps have been recognised concerning the ecological effects of synthetic fungicides on non-target symbiotic aquatic fungi and the ecological processes where they intervene. The goal of this work was to assess the influence of three commonly used fungicides (myclobutanil, metalaxyl and cymoxanil), which differ in their mode of action, on a host (the crustacean Daphnia magna) × parasite (the yeast Metschnikowia bicuspidata) experimental model. Using a set of life history experiments, we evaluated the effect of each fungicide on the outcome of this relationship (disease) and on the fitness of both host and parasite. Contrasting results were observed: (i) cymoxanil and metalaxyl were overall innocuous to host and parasite at the tested concentrations, although host reproduction was occasionally reduced in the simultaneous presence of parasite and fungicide; (ii) on the contrary, myclobutanil displayed a clear antifungal effect, decreasing parasite prevalence and alleviating infection signs in the hosts. This antiparasitic effect of myclobutanil was further investigated with a follow-up experiment that manipulated the timing of application of the fungicide, to understand which stage of parasite development was most susceptible: while myclobutanil did not interfere in the early stages of infection, its antifungal activity was clearly observable at a later stage of the disease (by impairing the production of transmission stages of the parasite). More research is needed to understand the broader consequences of this parasite-clearance effect, especially in face of increasing evidence that parasites are ecologically more important than their cryptic nature might suggest.
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Affiliation(s)
- Cláudia Machado
- CBMA (Centre of Molecular and Environmental Biology) & Department of Biology, School of Sciences, University of Minho, Braga, Portugal; Institute of Science and Innovation for Bio-Sustainability (IB-S), School of Sciences, University of Minho, Braga, Portugal
| | - Ana P Cuco
- CBMA (Centre of Molecular and Environmental Biology) & Department of Biology, School of Sciences, University of Minho, Braga, Portugal; Institute of Science and Innovation for Bio-Sustainability (IB-S), School of Sciences, University of Minho, Braga, Portugal
| | - Fernanda Cássio
- CBMA (Centre of Molecular and Environmental Biology) & Department of Biology, School of Sciences, University of Minho, Braga, Portugal; Institute of Science and Innovation for Bio-Sustainability (IB-S), School of Sciences, University of Minho, Braga, Portugal
| | - Justyna Wolinska
- Department of Evolutionary and Integrative Ecology, Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, Germany; Department of Biology, Chemistry, Pharmacy, Institute of Biology, Freie Universität Berlin, Berlin, Germany
| | - Bruno B Castro
- CBMA (Centre of Molecular and Environmental Biology) & Department of Biology, School of Sciences, University of Minho, Braga, Portugal; Institute of Science and Innovation for Bio-Sustainability (IB-S), School of Sciences, University of Minho, Braga, Portugal.
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42
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Jacova R, Kennedy C. Avermectin Toxicity to Benthic Invertebrates is Modified by Sediment Organic Carbon and Chemical Residence Time. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2022; 41:1918-1936. [PMID: 35579385 DOI: 10.1002/etc.5364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/20/2022] [Accepted: 05/11/2022] [Indexed: 06/15/2023]
Abstract
Chemicals used in sea lice management strategies in salmonid aquaculture include the avermectin class of compounds that can accumulate and persist in the sediments underneath salmon farms and directly impact nontarget benthic fauna. The effects of sediment organic carbon content and chemical residence time (CRT) on the lethal and sublethal toxicity of emamectin benzoate (EB; formulation: Slice®) and ivermectin (purified) and a combination of both were examined in two benthic invertebrates, the amphipod Eohaustorius estuarius and the polychaete Neanthes virens. In both species, increased sediment organic carbon content significantly reduced lethal toxicity, a modulation that was more pronounced for ivermectin and combination exposures. At a CRT of 4 months, lethal toxicity was reduced in E. estuarius but was unaffected in N. virens. Sublethal toxicity in N. virens (burrowing behavior) was modulated by sediment organic carbon and CRT in a similar manner to the trend in lethal toxicity. Inconsistencies in behavior (phototaxis) in E. estuarius made conclusions regarding toxicity modification by sediment organic carbon or CRT inconclusive. Our results indicate that environmental factors including sediment organic carbon content and the time compounds reside in sediments are important modifiers of chemotherapeutant toxicity in nontarget benthic species and should be considered when regulatory decisions regarding their use are made. Environ Toxicol Chem 2022;41:1918-1936. © 2022 SETAC.
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Affiliation(s)
- Ruben Jacova
- Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Christopher Kennedy
- Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada
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43
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Sereni L, Guenet B, Crouzet O, Blasi C, Lamy I. Responses of soil nitrification activities to copper after a moisture stress. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:46680-46690. [PMID: 35171414 DOI: 10.1007/s11356-022-19093-2] [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: 10/14/2021] [Accepted: 02/03/2022] [Indexed: 06/14/2023]
Abstract
Some steps of the soil nitrogen (N) cycle are sensitive to environmental pressures like soil moisture or contamination, which are expected to evolve during the next decades. Individual stresses have been well studied, but their combination is not yet documented. In this work, we aimed at assessing the importance of the soil moisture on the impact of copper (Cu) contaminations on the N cycling soil function using the potential nitrification activities (PNA) as bioindicator. A two-step experiment was performed. First, a loamy soil was incubated 5 weeks in either 30, 60, or 90% of its water holding capacity (WHC) or alternating drought and rewetting periods. Thereafter, soil samples were exposed to a gradient of Cu concentrations through a bioassay involving nitrification. The dose-response curves of PNA in function of added Cu were modeled to calculate the effective Cu concentrations, namely ECx with x being the percentage of PNA inhibition. These values were then compared between experimental conditions to highlight differences in threshold values. The preincubation moisture treatments significantly affected the PNA responses to the secondary Cu stress with, for instance, hormetic responses in all cases except for the dry-rewetting treatment. Small PNA inhibitions were estimated for high Cu doses in the soils with low water contents (30% WHC) or submitted to dry-rewetting cycles, contrarily to the patterns observed for the soils with high water contents (90% WHC) or submitted to a single period of drought. Overall, significant differences were found in estimated ECx values between moisture treatments.
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Affiliation(s)
- Laura Sereni
- Ecotoxicology Team, University Paris-Saclay, INRAE, AgroParisTech, UMR ECOSYS, 78026, Versailles, France.
| | - Bertrand Guenet
- Laboratoire de Géologie de L'ENS, PSL Research University, CNRS, UMR 8538, Paris, France
| | - Olivier Crouzet
- Ecotoxicology Team, University Paris-Saclay, INRAE, AgroParisTech, UMR ECOSYS, 78026, Versailles, France
- Office National de La Chasse et de La Faune Sauvage, Site d'Auffargis-Saint-Benoist, 78612, Le-Perray-en-Yvelines, France
| | - Charlotte Blasi
- Ecotoxicology Team, University Paris-Saclay, INRAE, AgroParisTech, UMR ECOSYS, 78026, Versailles, France
- Centre Sève, Département de Chimie, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Isabelle Lamy
- Ecotoxicology Team, University Paris-Saclay, INRAE, AgroParisTech, UMR ECOSYS, 78026, Versailles, France
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44
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Li B, Zhang X, Tefsen B, Wells M. From speciation to toxicity: Using a "Two-in-One" whole-cell bioreporter approach to assess harmful effects of Cd and Pb. WATER RESEARCH 2022; 217:118384. [PMID: 35427828 DOI: 10.1016/j.watres.2022.118384] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 03/21/2022] [Accepted: 03/29/2022] [Indexed: 06/14/2023]
Abstract
Due to the sheer number of contaminated sites, bioavailability-based measurement and modeling of toxicity is used to triage response; despite advances, both remain relatively cumbersome. Cadmium (Cd) and lead (Pb) are two of the most toxic and globally prevalent pollutants, disproportionately impacting disadvantaged communities. Here we demonstrate the use of high throughput lights-on bioreporter technology to measure both speciation and toxicity. The organism's response is fit-for-purpose to parameterize the Biotic Ligand Model used in risk assessment of aquatic ecotoxicity and setting environmental Water Quality Criteria. Toxicity endpoints for analogous Cd and Pb models reported in literature average 71st and 44th rank-percentile sensitivity of Genus Mean Acute Values for acute toxicity (i.e., insensitive) in comparison to the bioreporter, the unique dual-mode measurement ability of which can predict toxicity endpoints from below the 5th percentile up to the 50th rank-percentile. These results are extensible to other reporters, paving the way to cost-efficient environmental risk assessment of aquatic ecotoxicity for a wide range of priority toxic pollutants.
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Affiliation(s)
- Boling Li
- Department of Environmental Science, University of Liverpool, Brownlow Hill, Liverpool L69 7ZX, UK; Department of Biological Sciences, Xi'an Jiaotong-Liverpool University, Suzhou, Jiangsu 215123, China
| | - Xiaokai Zhang
- Institute of Environmental Processes and Pollution Control, and School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Boris Tefsen
- Ronin Institute, 127 Haddon Place, Montclair, NJ 07043, United States.
| | - Mona Wells
- Ronin Institute, 127 Haddon Place, Montclair, NJ 07043, United States.
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45
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Field-Evolved ΔG210-ppo2 from Palmer Amaranth Confers Pre-emergence Tolerance to PPO-Inhibitors in Rice and Arabidopsis. Genes (Basel) 2022; 13:genes13061044. [PMID: 35741806 PMCID: PMC9222656 DOI: 10.3390/genes13061044] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 05/03/2022] [Accepted: 06/07/2022] [Indexed: 02/02/2023] Open
Abstract
Resistance to protoporphyrinogen IX oxidase (PPO)-inhibitors in Amaranthus palmeri and Amaranthus tuberculatus is mainly contributed by mutations in the PPO enzyme, which renders herbicide molecules ineffective. The deletion of glycine210 (ΔG210) is the most predominant PPO mutation. ΔG210-ppo2 is overexpressed in rice (Oryza sativa c. ‘Nipponbare’) and Arabidopsis thaliana (Col-0). A foliar assay was conducted on transgenic T1 rice plants with 2× dose of fomesafen (780 g ha−1), showing less injury than the non-transgenic (WT) plants. A soil-based assay conducted with T2 rice seeds confirmed tolerance to fomesafen applied pre-emergence. In agar medium, root growth of WT rice seedlings was inhibited >90% at 5 µM fomesafen, while root growth of T2 seedlings was inhibited by 50% at 45 µM fomesafen. The presence and expression of the transgene were confirmed in the T2 rice survivors of soil-applied fomesafen. A soil-based assay was also conducted with transgenic A. thaliana expressing ΔG210-ppo2 which confirmed tolerance to the pre-emergence application of fomesafen and saflufenacil. The expression of A. palmeri ΔG210-ppo2 successfully conferred tolerance to soil-applied fomesafen in rice and Arabidopsis. This mutant also confers cross-tolerance to saflufenacil in Arabidopsis. This trait could be introduced into high-value crops that lack chemical options for weed management.
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Siddiqui S, Dickens JM, Cunningham BE, Hutton SJ, Pedersen EI, Harper B, Harper S, Brander SM. Internalization, reduced growth, and behavioral effects following exposure to micro and nano tire particles in two estuarine indicator species. CHEMOSPHERE 2022; 296:133934. [PMID: 35176295 PMCID: PMC9071364 DOI: 10.1016/j.chemosphere.2022.133934] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 02/01/2022] [Accepted: 02/07/2022] [Indexed: 05/19/2023]
Abstract
Synthetic rubber emissions from automobile tires are common in aquatic ecosystems. To assess potential impacts on exposed organisms, early life stages of the estuarine indicator species Inland Silverside (Menidia beryllina) and mysid shrimp (Americamysis bahia) were exposed to three tire particle (TP) concentrations at micro and nano size fractions (0.0038, 0.0378 and 3.778 mg/L in mass concentrations for micro size particles), and separately to leachate, across a 5-25 PSU salinity gradient. Following exposure, M. beryllina and A. bahia had significantly altered swimming behaviors, such as increased freezing, changes in positioning, and total distance moved, which could lead to an increased risk of predation and foraging challenges in the wild. Growth for both A. bahia and M. beryllina was reduced in a concentration-dependent manner when exposed to micro-TP, whereas M. beryllina also demonstrated reduced growth when exposed to nano-TP (except lowest concentration). TP internalization was dependent on the exposure salinity in both taxa. The presence of adverse effects in M. beryllina and A. bahia indicate that even at current environmental levels of tire-related pollution, which are expected to continue to increase, aquatic ecosystems may be experiencing negative impacts.
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Affiliation(s)
- S Siddiqui
- Fisheries, Wildlife, and Conservation Sciences; Coastal Oregon Marine Experiment Station, College of Agricultural and Life Sciences, Oregon State University, 97365, USA.
| | - J M Dickens
- Marine Resources Management Program, College of Earth, Atmospheric, and Oceanic Sciences, Oregon State University Corvallis, Oregon, 97331, USA
| | - B E Cunningham
- Environmental and Molecular Toxicology, College of Agricultural and Life Sciences, Oregon State University, 97331, USA
| | - S J Hutton
- Environmental and Molecular Toxicology, College of Agricultural and Life Sciences, Oregon State University, 97331, USA
| | - E I Pedersen
- Fisheries, Wildlife, and Conservation Sciences; Coastal Oregon Marine Experiment Station, College of Agricultural and Life Sciences, Oregon State University, 97365, USA
| | - B Harper
- Environmental and Molecular Toxicology, College of Agricultural and Life Sciences, Oregon State University, 97331, USA
| | - S Harper
- Environmental and Molecular Toxicology, College of Agricultural and Life Sciences, Chemical, Biological and Environmental Engineering, College of Engineering, Oregon State University, 97331, USA
| | - S M Brander
- Fisheries, Wildlife, and Conservation Sciences; Coastal Oregon Marine Experiment Station, College of Agricultural and Life Sciences, Oregon State University, 97365, USA
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Hano T, Ito K, Ito M, Takashima K, Somiya R, Takai Y, Oshima Y, Ohkubo N. Molting enhances internal concentrations of fipronil and thereby decreases survival of two estuarine resident marine crustaceans. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2022; 247:106172. [PMID: 35468410 DOI: 10.1016/j.aquatox.2022.106172] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 04/11/2022] [Accepted: 04/13/2022] [Indexed: 06/14/2023]
Abstract
In aquatic arthropods, molting is a pivotal physiological process for normal development, but it may also expose them to higher risks from xenobiotics, because the organism may take up additional water during that time. This study aimed to assess the effects of molting on bioconcentration and survival after 96-h exposure to insecticide fipronil with or without oxygenase (CYP450s) inhibitor piperonyl butoxide (PBO) of two estuarine resident marine crustacean species: the sand shrimp Crangon uritai and the kuruma prawn Penaeus japonicus, with 96-h LC50 value of fipronil = 2.0 µg/L and 0.2 µg/L, respectively. Two graded concentrations included group high (H) (equivalent to the 96-h LC50 values) and low (L) (one-tenth of the H group concentration). Molting and survival were individually checked, and internal concentrations of fipronil and its metabolites (fipronil desulfinyl, fipronil sulfide, fipronil sulfone) were measured. The results showed that, only fipronil and fipronil sulfone were detected from organism, and that internal concentrations of these insecticides in molted specimens were higher than those of unmolted ones but comparable with those of dead ones. Accordingly, mortality was more frequent in molted specimens than those that were unmolted. Furthermore, involvement of oxygenase and higher lethal body burden threshold may confer higher tolerance to fipronil in sand shrimp than in the kuruma prawn. This study is the first to demonstrate that the body-residue-based approach is useful for deciphering the causal factors underlying fipronil toxicity, but highlights the need to consider physiological factors in arthropods, which influence and lie beyond body burden, molting and drug metabolism.
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Affiliation(s)
- Takeshi Hano
- Environment Conservation Division, Fisheries Technology Institute, National Research and Development Agency, Japan Fisheries Research and Education Agency, 2-17-5 Maruishi, Hatsukaichi, Hiroshima 739-0452, Japan.
| | - Katsutoshi Ito
- Environment Conservation Division, Fisheries Technology Institute, National Research and Development Agency, Japan Fisheries Research and Education Agency, 2-17-5 Maruishi, Hatsukaichi, Hiroshima 739-0452, Japan
| | - Mana Ito
- Environment Conservation Division, Fisheries Technology Institute, National Research and Development Agency, Japan Fisheries Research and Education Agency, 2-17-5 Maruishi, Hatsukaichi, Hiroshima 739-0452, Japan
| | - Kei Takashima
- Fisheries Research Center, Ehime Research Institute of Agriculture, Forestry and Fisheries, 1611 Tanbara-chou Ikeda, Saijyo, Ehime 791-0508, Japan
| | - Rei Somiya
- Environment Conservation Division, Fisheries Technology Institute, National Research and Development Agency, Japan Fisheries Research and Education Agency, 2-17-5 Maruishi, Hatsukaichi, Hiroshima 739-0452, Japan
| | - Yuki Takai
- Laboratory of Marine Environmental Science, Faculty of Agriculture, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yuji Oshima
- Laboratory of Marine Environmental Science, Faculty of Agriculture, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Nobuyuki Ohkubo
- Environment Conservation Division, Fisheries Technology Institute, National Research and Development Agency, Japan Fisheries Research and Education Agency, 2-17-5 Maruishi, Hatsukaichi, Hiroshima 739-0452, Japan
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Price GAV, Stauber JL, Holland A, Koppel DJ, Van Genderen EJ, Ryan AC, Jolley DF. The influence of hardness at varying pH on zinc toxicity and lability to a freshwater microalga, Chlorella sp. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2022; 24:783-793. [PMID: 35442258 DOI: 10.1039/d2em00063f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Zinc is an essential element for aquatic organisms, however, activities such as mining and refining, as well as zinc's ubiquitous role in modern society can contribute to elevated environmental concentrations of zinc. Water hardness is widely accepted as an important toxicity modifying factor for metals in aquatic systems, though other factors such as pH are also important. This study investigated the influence of increasing water hardness, at three different pH values (6.7, 7.6 and 8.3), on the chronic toxicity of zinc to the growth rate of a microalgae, Chlorella sp. Zinc toxicity decreased with increasing hardness from 5 to 93 mg CaCO3 L-1 at all three pH values tested. The 72 h growth rate inhibition EC50 values ranged from 6.2 μg Zn L-1 (at 5 mg CaCO3 L-1, pH 8.3) to 184 μg Zn L-1 (at 92 mg CaCO3 L-1, pH 6.7). Increases in hardness from 93 to 402 mg CaCO3 L-1 generally resulted in no significant (p > 0.05) reduction in zinc toxicity. DGT-labile zinc measurements did not correspond with the observed changes in zinc toxicity as hardness was varied within a pH treatment. This suggests that cationic competition from increased hardness is decreasing zinc toxicity, rather than changes in metal lability. This study highlighted that current hardness algorithms used in water quality guidelines may not be sufficiently protective of sensitive species, such as Chlorella sp., in high hardness waters.
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Affiliation(s)
- Gwilym A V Price
- Faculty of Science, University of Technology Sydney Broadway, NSW 2007, Australia.
- CSIRO Land and Water, Lucas Heights, NSW, Australia
| | - Jenny L Stauber
- CSIRO Land and Water, Lucas Heights, NSW, Australia
- La Trobe University, School of Life Science, Department of Ecology, Environment and Evolution, Centre for Freshwater Ecosystems, Albury/Wodonga Campus, VIC, Australia
| | - Aleicia Holland
- CSIRO Land and Water, Lucas Heights, NSW, Australia
- La Trobe University, School of Life Science, Department of Ecology, Environment and Evolution, Centre for Freshwater Ecosystems, Albury/Wodonga Campus, VIC, Australia
| | - Darren J Koppel
- CSIRO Land and Water, Lucas Heights, NSW, Australia
- Curtin University, Faculty of Science and Engineering, Bentley, WA, Australia
| | | | - Adam C Ryan
- International Zinc Association, Durham, NC, USA
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Moreno-Ocio I, Méndez-Fernández L, Martínez-Madrid M, Costas N, Pardo I, Rodriguez P. Developing As and Cu Tissue Residue Thresholds to Attain the Good Ecological Status of Rivers in Mining Areas. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2022; 82:379-390. [PMID: 35244725 PMCID: PMC8971172 DOI: 10.1007/s00244-022-00915-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 01/20/2022] [Indexed: 06/14/2023]
Abstract
The study was performed on residue-effects datasets from polluted and unpolluted sites in the Nalón River basin (northern Spain). The effects were measured in terms of alteration of field macroinvertebrate communities, and measured as ecological status scores, and number of families and abundance of Ephemeroptera, Plecoptera and Trichoptera (EPT). Non-linear regression models of the field-measured tissue residues in 10 taxa related to the ecological status of the macroinvertebrate communities were used to derive effective tissue residues (ERs). These were estimated for the good/moderate boundary defined by the ecological quality ratio (EQRs) score and for the 50% reduction of EQR and EPT metrics. As, Cu, Hg and Se ERs were calculated for several macroinvertebrate taxa with different feeding styles. The ER dataset allowed us to estimate As and Cu hazardous concentrations (HC), using species sensitivity distribution models, and were interpreted as community thresholds. Further studies for Hg and Se are needed to complete the database required for HC estimation. The reliability and differences of the several thresholds were tested in a risk assessment using a tissue-residue approach (TRA) conducted with field organisms from Cauxa Creek, a tributary from the same basin exposed to high levels of metals in the sediments due to gold mining activities. This risk assessment identified that As and Cu tissue residues satisfactorily explained the reduction in the ecological status of the macroinvertebrate assemblages. Our results indicate that TRA can help in setting future environmental quality standards for the protection of aquatic biota.
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Affiliation(s)
- Iñigo Moreno-Ocio
- Department Zoology and Animal Cell Biology, University of the Basque Country, UPV/EHU, Box 644, 48080, Bilbao, Spain.
| | - Leire Méndez-Fernández
- Department Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country, UPV/EHU, Bilbao, Spain
| | - Maite Martínez-Madrid
- Department Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country, UPV/EHU, Bilbao, Spain
| | - Noemí Costas
- Department Ecology and Animal Biology, University of Vigo, Vigo, Spain
| | - Isabel Pardo
- Department Ecology and Animal Biology, University of Vigo, Vigo, Spain
| | - Pilar Rodriguez
- Department Zoology and Animal Cell Biology, University of the Basque Country, UPV/EHU, Box 644, 48080, Bilbao, Spain
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50
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Charles S, Ratier A, Baudrot V, Multari G, Siberchicot A, Wu D, Lopes C. Taking full advantage of modelling to better assess environmental risk due to xenobiotics-the all-in-one facility MOSAIC. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:29244-29257. [PMID: 34255258 DOI: 10.1007/s11356-021-15042-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 06/17/2021] [Indexed: 06/13/2023]
Abstract
In the European Union, more than 100,000 man-made chemical substances are awaiting an environmental risk assessment (ERA). Simultaneously, ERA of these chemicals has now entered a new era requiring determination of risks for physiologically diverse species exposed to several chemicals, often in mixtures. Additionally, recent recommendations from regulatory bodies underline a crucial need for the use of mechanistic effect models, allowing assessments that are not only ecologically relevant, but also more integrative, consistent and efficient. At the individual level, toxicokinetic-toxicodynamic (TKTD) models are particularly encouraged for the regulatory assessment of pesticide-related risks on aquatic organisms. In this paper, we first briefly present a classical dose-response model to showcase the on-line MOSAIC tool, which offers all necessary services in a turnkey web platform, whatever the type of data analyzed. Secondly, we focus on the necessity to account for the time-dimension of the exposure by illustrating how MOSAIC can support a robust calculation of bioaccumulation metrics. Finally, we show how MOSAIC can be of valuable help to fully complete the EFSA workflow regarding the use of TKTD models, especially with GUTS models, providing a user-friendly interface for calibrating, validating and predicting survival over time under any time-variable exposure scenario of interest. Our conclusion proposes a few lines of thought for an easier use of modelling in ERA.
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Affiliation(s)
- Sandrine Charles
- CNRS UMR 5558, Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon, Université Lyon 1, 69100, Villeurbanne, France.
| | - Aude Ratier
- CNRS UMR 5558, Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon, Université Lyon 1, 69100, Villeurbanne, France
| | - Virgile Baudrot
- CNRS UMR 5558, Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon, Université Lyon 1, 69100, Villeurbanne, France
| | - Gauthier Multari
- CNRS UMR 5558, Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon, Université Lyon 1, 69100, Villeurbanne, France
| | - Aurélie Siberchicot
- CNRS UMR 5558, Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon, Université Lyon 1, 69100, Villeurbanne, France
| | - Dan Wu
- CNRS UMR 5558, Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon, Université Lyon 1, 69100, Villeurbanne, France
| | - Christelle Lopes
- CNRS UMR 5558, Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon, Université Lyon 1, 69100, Villeurbanne, France
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