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Kristiansen SM, Leinaas HP, van Gestel CAM, Borgå K. Thermal adaptation affects the temperature-dependent toxicity of the insecticide imidacloprid to soil invertebrates. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 944:173845. [PMID: 38871314 DOI: 10.1016/j.scitotenv.2024.173845] [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: 01/15/2024] [Revised: 06/05/2024] [Accepted: 06/06/2024] [Indexed: 06/15/2024]
Abstract
Terrestrial ectotherms are vulnerable to climate change since their biological rates depend on the ambient temperature. As temperature may interact with toxicant exposure, climate change may cause unpredictable responses to toxic stress. A population's thermal adaptation will impact its response to temperature change, but also to interactive effects from temperature and toxicants, but these effects are still not fully understood. Here, we assessed the combined effects of exposure to the insecticide imidacloprid across the temperatures 10-25 °C of two populations of the Collembola Hypogastrura viatica (Tullberg, 1872), by determining their responses in multiple life history traits. The con-specific populations differ considerably in thermal adaptations; one (arctic) is a temperature generalist, while the other (temperate) is a warm-adapted specialist. For both populations, the sub-lethal concentrations of imidacloprid became lethal with increasing temperature. Although the thermal maximum is higher for the warm-adapted population, the reduction in survival was stronger. Growth was reduced by imidacloprid in a temperature-dependent manner, but only at the adult life stage. The decrease in adult body size combined with the absence of an effect on the age at first reproduction suggests a selection on the timing of maturation. Egg production was reduced by imidacloprid in both populations, but the negative effect was only dependent on temperature in the warm-adapted population, with no effect at 10 °C, and decreases of 41 % at 15 °C, and 74 % at 20 °C. For several key traits, the population best adapted to utilize high temperatures was also the most sensitive to toxic stress at higher temperatures. It could be that by allocating more energy to faster growth, development, and reproduction at higher temperatures, the population had less energy for maintenance, making it more sensitive to toxic stress. Our findings demonstrate the need to take into account a population's thermal adaptation when assessing the interactive effects between temperature and other stressors.
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Affiliation(s)
- Silje M Kristiansen
- Department of Biosciences, University of Oslo, Blindernvn 31, 0316 Oslo, Norway.
| | - Hans P Leinaas
- Department of Biosciences, University of Oslo, Blindernvn 31, 0316 Oslo, Norway
| | - Cornelis A M van Gestel
- Amsterdam Institute for Life and Environment (A-LIFE), Faculty of Science, Vrije Universiteit Amsterdam, De Boolelaan 1108, 1081, HZ, Amsterdam, the Netherlands
| | - Katrine Borgå
- Department of Biosciences, University of Oslo, Blindernvn 31, 0316 Oslo, Norway
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2
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Ernst G, Amorim MJB, Bottoms M, Brooks AC, Hodson ME, Kimmel S, Kotschik P, Marx MT, Natal-da-Luz T, Pelosi C, Pieper S, Schimera A, Scott-Fordsmand J, Sharples A, Sousa JP, van Gestel CAM, van Hall B, Bergtold M. Intermediate-tier options in the environmental risk assessment of plant protection products for soil invertebrates-Synthesis of a workshop. INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2024; 20:780-793. [PMID: 37563990 DOI: 10.1002/ieam.4825] [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: 03/03/2023] [Revised: 07/10/2023] [Accepted: 07/28/2023] [Indexed: 08/12/2023]
Abstract
The European environmental risk assessment (ERA) of plant protection products follows a tiered approach. The approach for soil invertebrates currently consists of two steps, starting with a Tier 1 assessment based on reproduction toxicity tests with earthworms, springtails, and predatory mites. In case an unacceptable risk is identified at Tier 1, field studies can be conducted as a higher-tier option. For soil invertebrates, intermediate tiers are not implemented. Hence, there is limited possibility to include additional information for the ERA to address specific concerns when the Tier 1 fails, as an alternative to, for example, a field study. Calibrated intermediate-tier approaches could help to address risks for soil invertebrates with less time and resources but also with sufficient certainty. A multistakeholder workshop was held on 2-4 March 2022 to discuss potential intermediate-tier options, focusing on four possible areas: (1) natural soil testing, (2) single-species tests (other than standard species), (3) assessing recovery in laboratory tests, and (4) the use of assembled soil multispecies test systems. The participants acknowledged a large potential in the intermediate-tier options but concluded that some issues need to be clarified before routine application of these approaches in the ERA is possible, that is, sensitivity, reproducibility, reliability, and standardization of potential new test systems. The definition of suitable assessment factors needed to calibrate the approaches to the protection goals was acknowledged. The aims of the workshop were to foster scientific exchange and a data-driven dialog, to discuss how the different approaches could be used in the risk assessment, and to identify research priorities for future work to address uncertainties and strengthen the tiered approach in the ERA for soil invertebrates. This article outlines the background, proposed methods, technical challenges, difficulties and opportunities in the ERA, and conclusions of the workshop. Integr Environ Assess Manag 2024;20:780-793. © 2023 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)
- Gregor Ernst
- Bayer AG, CropScience Division, Monheim, Germany
| | - Mónica J B Amorim
- Department of Biology and CESAM, University of Aveiro, Aveiro, Portugal
| | - Melanie Bottoms
- Syngenta Ltd., Jealott's Hill International Research Centre, Bracknell, UK
| | - Amy C Brooks
- Cambridge Environmental Assessments, Cambridge, UK
| | - Mark E Hodson
- Department of Environment and Geography, University of York, York, UK
| | | | - Pia Kotschik
- German Environment Agency (UBA), Dessau-Roßlau, Germany
| | | | - Tiago Natal-da-Luz
- Associate Laboratory TERRA, Department of Life Sciences, CFE-Centre for Functional Ecology - Science for the People and the Planet, University of Coimbra, Coimbra, Portugal
| | - Céline Pelosi
- INRAE, Avignon Université, UMR EMMAH, Avignon, France
| | - Silvia Pieper
- German Environment Agency (UBA), Dessau-Roßlau, Germany
| | | | | | | | - José P Sousa
- Associate Laboratory TERRA, Department of Life Sciences, CFE-Centre for Functional Ecology - Science for the People and the Planet, University of Coimbra, Coimbra, Portugal
| | - Cornelis A M van Gestel
- Faculty of Science, Amsterdam Institute for Life and Environment (A-LIFE), Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Bart van Hall
- Faculty of Science, Amsterdam Institute for Life and Environment (A-LIFE), Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
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Dai W, Slotsbo S, Xie L, Wang Y, Damgaard C, Holmstrup M. Increased daily temperature fluctuations exacerbate the toxicity of phenanthrene in Enchytraeus albidus (Enchytraeidae). THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 873:162403. [PMID: 36841403 DOI: 10.1016/j.scitotenv.2023.162403] [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: 12/04/2022] [Revised: 02/14/2023] [Accepted: 02/18/2023] [Indexed: 06/18/2023]
Abstract
Temperature variability in soils is expected to increase due to the more frequent occurrence of heat waves, putting species under thermal stress. In addition, organic pollutants such as polycyclic aromatic hydrocarbons (PAHs) are released into the environment due to anthropogenic activities. Both stressors negatively impact terrestrial organisms and may interact with each other. Here, we subjected the soil living enchytraeid, Enchytraeus albidus, to combined exposure to phenanthrene (PHE; 0, 10, 20, 40, and 80 mg kg-1 dry soil) and a range of temperature treatments (constant temperature (CT): 10, 15 and 20 °C; different mean temperature with the same daily temperature fluctuation (DTF-5): 10 ± 5, 15 ± 5 and 20 ± 5 °C; daily temperature fluctuation with the same mean, but different amplitudes (DTF-A): 20, 20 ± 2, 20 ± 5 and 20 ± 7 °C). We measured internal PHE concentration in adults and found that an increase in mean temperature significantly increased the internal PHE concentration. The production of juveniles was measured using a standardized test. We found a synergistic interaction between the temperature amplitude (DTF-A treatments) and PHE on the reproduction of E. albidus. The EC50 of reproduction decreased with increasing amplitude. These results show that the negative effects of PHE on E. albidus can be magnified if stressful temperatures are reached (although briefly) during diurnal fluctuations of soil temperature. Our results highlight the importance and inclusion of extreme thermal events in the risk assessment of pollutants.
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Affiliation(s)
- Wencai Dai
- College of Resources and Environment, Southwest University, Chongqing 400715, China; Section of Terrestrial Ecology, Department of Ecoscience, Aarhus University, C.F. Møllers Alle 4, 8000 Aarhus C, Denmark.
| | - Stine Slotsbo
- Section of Terrestrial Ecology, Department of Ecoscience, Aarhus University, C.F. Møllers Alle 4, 8000 Aarhus C, Denmark
| | - Liyan Xie
- Section of Terrestrial Ecology, Department of Ecoscience, Aarhus University, C.F. Møllers Alle 4, 8000 Aarhus C, Denmark
| | - Yang Wang
- Section of Terrestrial Ecology, Department of Ecoscience, Aarhus University, C.F. Møllers Alle 4, 8000 Aarhus C, Denmark
| | - Christian Damgaard
- Section of Terrestrial Ecology, Department of Ecoscience, Aarhus University, C.F. Møllers Alle 4, 8000 Aarhus C, Denmark
| | - Martin Holmstrup
- Section of Terrestrial Ecology, Department of Ecoscience, Aarhus University, C.F. Møllers Alle 4, 8000 Aarhus C, Denmark
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Graciani TS, Bandeira FO, Cardoso EJBN, Alves PRL. Influence of temperature and soil moisture on the toxic potential of clothianidin to collembolan Folsomia candida in a tropical field soil. ECOTOXICOLOGY (LONDON, ENGLAND) 2023; 32:82-92. [PMID: 36648631 DOI: 10.1007/s10646-023-02621-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/06/2023] [Indexed: 06/17/2023]
Abstract
Climate change can alter the toxic effects of pesticides on soil invertebrates. However, the nature and magnitude of the influence of climatic factors on clothianidin impacts in tropical soils are still unknown. The influence of increasing atmospheric temperature and the reduction in soil moisture on the toxicity and risk of clothianidin (seed dressing formulation Inside FS®) were assessed through chronic toxicity tests with collembolans Folsomia candida in a tropical field soil (Entisol). The risk of clothianidin for collembolans was estimated using the Toxicity-Exposure Ratio (TER) approach. Organisms were exposed to increasing clothianidin concentrations at 20, 25 and 27 °C in combination with two soil moisture conditions (30 and 60% of the maximum water holding capacity-WHC). The effect of temperature and soil moisture content on clothianidin toxicity was verified through the number of F. candida juveniles generated after 28 days of exposure to the spiked soil. The toxicities estimated at 25 °C (EC50_30%WHC = 0.014 mg kg-1; EC50_60%WHC = 0.010 mg kg-1) and 27 °C (EC50_30%WHC = 0.006 mg kg-1; EC50_60%WHC = 0.007 mg kg-1) were 2.9-3.0-fold (25 °C) and 4.3-6.7-fold (27 °C) higher than those found at 20 °C (EC50_30%WHC = 0.040 mg kg-1; EC50_60%WHC = 0.030 mg kg-1), indicating that clothianidin toxicity increases with temperature. No clear influence of soil moisture content on clothianidin toxicity could be observed once the EC50 values estimated at 30% and 60% WHC, within the same temperature, did not significantly differ. A significant risk was detected in all temperatures and soil moisture scenarios studied, and the TER values indicate that the risk can increase with increasing temperatures. Our results revealed that temperature could overlap with soil moisture in regulating clothianidin toxicity and reinforce the importance of including climatic factors in the prospective risk assessment of pesticides.
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Affiliation(s)
| | - Felipe Ogliari Bandeira
- Department of Soil Science, Santa Catarina State University, Av. Luiz de Camões, 2090, 88520-000, Lages, SC, Brazil
| | | | - Paulo Roger Lopes Alves
- Federal University of Fronteira Sul, Av. Fernando Machado 108 E, 89802112, Chapecó, SC, Brazil.
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Ferreira P, Gabriel A, Sousa JP, Natal-da-Luz T. Representativeness of Folsomia candida to assess toxicity of a new generation insecticide in different temperature scenarios. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 837:155712. [PMID: 35525360 DOI: 10.1016/j.scitotenv.2022.155712] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 04/19/2022] [Accepted: 05/01/2022] [Indexed: 06/14/2023]
Abstract
Climate change may interfere with the behavior of pesticides and organisms, influencing pesticides toxicity to non-target organisms like collembolans. Aiming to assess the representativeness of the standardized species F. candida to the Collembola group under different temperatures, four species of collembolans - Folsomia candida, Folsomia fimetaria, Proisotoma minuta and Sinella curviseta - were exposed to a new generation insecticide of Chlorantraniliprole, under the standardized temperature of 20 °C, and a temperature foreseeing a global warming scenario of 25 °C. Results showed that F. candida, F. fimetaria and P. minuta were sensitive to Chlorantraniliprole at both temperatures, while S. curviseta was insensitive to the insecticide concentrations up to 457 mg a.i./kg of soil, regardless of the temperature. The sensitivity of F. candida and P. minuta was significantly higher at 25 °C than at 20 °C, while F. fimetaria and S. curviseta remained equally sensitive/insensitive to both temperatures. Results suggest that F. candida can be representative of F. fimetaria under standard conditions but not for F. fimetaria under 25 °C nor for P. minuta and S. curviseta under both temperatures due to the higher sensitivity of F. candida. On the other hand, due to its higher sensitivity, F. candida can be used to define environmentally protective measures (at both test temperatures) but the use of additional Collembola species is recommended to avoid the definition of over-protective goals.
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Affiliation(s)
- Patrícia Ferreira
- CFE - Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal.
| | - Antonieta Gabriel
- CESAM & Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal. The Center of Environmental and Marine Studies of University of Aveiro, Portugal
| | - José Paulo Sousa
- CFE - Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
| | - Tiago Natal-da-Luz
- CFE - Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
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Hennig TB, Alves PRL, Toniolo T, Bandeira FO, Dos Santos WE, da Costa Cabrera L, Gilson ÍK, Baretta D. Toxicity of fipronil to Folsomia candida in contrasting tropical soils and soil moisture contents: effects on the reproduction and growth. ECOTOXICOLOGY (LONDON, ENGLAND) 2022; 31:64-74. [PMID: 34674062 DOI: 10.1007/s10646-021-02490-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/19/2021] [Indexed: 06/13/2023]
Abstract
This study assessed the influence of three tropical soil types and soil moisture content on the toxicity and risk of the insecticide fipronil to collembolans Folsomia candida. Chronic toxicity tests were performed in a Tropical Artificial Soil (TAS), an Oxisol and an Entisol spiked with increasing concentrations of fipronil to assess the effects on the reproduction and growth of the species. The soil moisture contents were kept at 60% (standard condition) and 30 or 45% (water restriction) of their water holding capacity (WHC). The toxicity of fipronil on collembolans reproduction was about three times higher in Entisol compared to TAS or Oxisol. Higher toxicities were also found in the drier TAS (EC50 30%WHC = 0.20 vs EC50 60%WHC = 0.70 mg kg-1) and Oxisol (EC50 45%WHC = 0.27 vs EC50 60%WHC = 0.54 mg kg-1), while in Entisol lower impacts were found in the drier samples (EC50 30%WHC = 0.41 vs EC50 60%WHC = 0.24 mg kg-1). For all tested soils, the size of generated collembolans was reduced by the fipronil concentrations, regardless of soil moisture. However, the drier condition increased the effect on the growth in TAS and Entisol for some concentrations. A significant risk of exposure was found in TAS and Oxisol at drier conditions and, for Entisol, regardless of the soil moisture. The toxic effects and risk of fipronil on collembolans were higher in the natural sandy soil. The soil moisture content increase or decrease the toxicity of the insecticide for collembolans, depending on soil type.
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Affiliation(s)
- Thuanne Braúlio Hennig
- Department of Soil Science, Santa Catarina State University, Av. Luis de Camões, 2090, Lages, SC, 88520000, Brazil
| | - Paulo Roger Lopes Alves
- Federal University of Fronteira Sul, Av. Fernando Machado 108 E, Chapecó, SC, 89802112, Brazil.
| | - Tânia Toniolo
- Federal University of Fronteira Sul, Av. Fernando Machado 108 E, Chapecó, SC, 89802112, Brazil
| | - Felipe Ogliari Bandeira
- Department of Soil Science, Santa Catarina State University, Av. Luis de Camões, 2090, Lages, SC, 88520000, Brazil
| | | | - Liziara da Costa Cabrera
- Federal University of Fronteira Sul, Av. Jacob Reinaldo Haupenthal, 1580, Cerro Largo, RS, 97900000, Brazil
| | - Ítalo Kael Gilson
- Federal University of Fronteira Sul, Av. Jacob Reinaldo Haupenthal, 1580, Cerro Largo, RS, 97900000, Brazil
| | - Dilmar Baretta
- Department of Soil Science, Santa Catarina State University, Av. Luis de Camões, 2090, Lages, SC, 88520000, Brazil
- Centro de Educação Superior do Oeste, Santa Catarina State University, Beloni Trombeta Zanin, 680-E, Chapecó, SC, 89815-630, Brazil
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Bandeira FO, Lopes Alves PR, Hennig TB, Toniolo T, Natal-da-Luz T, Baretta D. Effect of temperature on the toxicity of imidacloprid to Eisenia andrei and Folsomia candida in tropical soils. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 267:115565. [PMID: 33254719 DOI: 10.1016/j.envpol.2020.115565] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 08/05/2020] [Accepted: 08/27/2020] [Indexed: 06/12/2023]
Abstract
The influence of temperature on the chronic toxicity and risk of imidacloprid to soil non-target species was assessed in tropical soils. Earthworms Eisenia andrei and collembolans Folsomia candida were exposed to a tropical artificial soil (TAS) and two natural tropical soils from Brazil (Entisol and Oxisol) with increasing concentrations of imidacloprid under atmospheric temperatures of 20, 25 and 28 °C. The effect of temperature on the reproduction of both species was assessed through the number of juveniles and earthworm's growth, and the risk associated was estimated through the Toxicity-Exposure Ratio (TER). Toxicity of imidacloprid increased with temperature in all tested soils, being generally lower in TAS soil (EC50s of 1.48, 0.66 and 0.40 mg kg-1 for E. andrei and 0.3, 0.2 and 0.06 mg kg-1 for F. candida at 20, 25 and 28 °C, respectively) compared to Entisol (EC50s of 0.19, 0.03 and 0.14 mg kg-1 for E. andrei and 0.04, 0.02, 0.01 mg kg-1 for F. candida at 20, 25 and 28 °C, respectively) and Oxisol (EC50s of 0.21, 0.07, 0.06 mg kg-1 for E. andrei and 0.16, 0.09, 0.06 mg kg-1 for F. candida at 20, 25 and 28 °C, respectively) within each temperature for both species. These values indicate that properties of TAS may not be representative of natural/local soils to adequately estimate the toxicity of pesticides to non-target soil species. At higher temperatures, the variability of imidacloprid toxicity between soils was lower, which suggests that the influence of soil properties on imidacloprid toxicity was overshadowed by temperature. TER values revealed that risk is also greater at higher temperatures. Data reported enforce the need for the inclusion of more realistic conditions in single-species tests in prospective risk assessment of pesticides to avoid underestimation of risk to non-target species.
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Affiliation(s)
- Felipe Ogliari Bandeira
- Dep. of Soil Science, Santa Catarina State University, Av. Luis de Camões, 2090, 88520-000, Lages, SC, Brazil
| | - Paulo Roger Lopes Alves
- Federal University of Fronteira Sul, Av. Fernando Machado 108 E, 89802112, Chapecó, SC, Brazil.
| | - Thuanne Braúlio Hennig
- Dep. of Soil Science, Santa Catarina State University, Av. Luis de Camões, 2090, 88520-000, Lages, SC, Brazil
| | - Tânia Toniolo
- Federal University of Fronteira Sul, Av. Fernando Machado 108 E, 89802112, Chapecó, SC, Brazil
| | - Tiago Natal-da-Luz
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, 3000-456, Coimbra, Portugal
| | - Dilmar Baretta
- Dep. of Soil Science, Santa Catarina State University, Av. Luis de Camões, 2090, 88520-000, Lages, SC, Brazil; Centro de Educação Superior Do Oeste, Santa Catarina State University, Beloni Trombeta Zanin, 680-E, 89815-630, Chapecó, SC, Brazil
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8
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Braúlio Hennig T, Ogliari Bandeira F, Dalpasquale AJ, Cardoso EJBN, Baretta D, Lopes Alves PR. Toxicity of imidacloprid to collembolans in two tropical soils under different soil moisture. JOURNAL OF ENVIRONMENTAL QUALITY 2020; 49:1491-1501. [PMID: 33459410 DOI: 10.1002/jeq2.20143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 07/28/2020] [Accepted: 08/15/2020] [Indexed: 06/12/2023]
Abstract
Shifts in precipitation regimes due to the predicted climate changes can alter the water content in tropical soils and, consequently, may influence the toxicity of pesticides to soil fauna. This study assessed the influence of soil moisture content on the toxicity of the insecticide imidacloprid to the collembolans Folsomia candida in two tropical soils and evaluated the risk of this active ingredient for this species in the soils tested through the toxicity exposure ratio approach. Acute and chronic toxicity tests with F. candida were performed using an Entisol and an Oxisol. The soils were spiked with increasing imidacloprid concentrations while simulating normal water availability (60% of the water holding capacity [WHC]) and water restriction (30 or 45% WHC) for the tests. In the Oxisol, the reduction of soil moisture content significantly increased the toxic effects of imidacloprid on F. candida's survival (LC50 at 45% WHC = 23.8 vs. LC50 at 60% WHC >64 mg kg-1) and reproduction (effective concentration causing reductions in species reproduction of 50% [EC50] at 45% WHC = 0.32 vs. EC50 at 60% WHC = 2.83 mg kg-1), but in the Entisol no clear influence of the soil moisture on the toxicity of imidacloprid for collembolans was found. A significant risk for F. candida was observed in the Oxisol only when in water restriction, whereas in the Entisol it occurred regardless of soil moisture, suggesting that the imidacloprid hazard and risk for F. candida may be increased if soil moisture decreases due to climate changes, depending on the soil type.
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Affiliation(s)
- Thuanne Braúlio Hennig
- Dep. of Soil Science, Santa Catarina State Univ., Ave. Luis de Camões, 2090, Lages, SC, 88520-000, Brazil
- Federal Univ. of Fronteira Sul, Ave. Fernando Machado 108 E, Chapecó, SC, 89802112, Brazil
| | - Felipe Ogliari Bandeira
- Dep. of Soil Science, Santa Catarina State Univ., Ave. Luis de Camões, 2090, Lages, SC, 88520-000, Brazil
| | | | | | - Dilmar Baretta
- Dep. of Soil Science, Santa Catarina State Univ., Ave. Luis de Camões, 2090, Lages, SC, 88520-000, Brazil
- Centro de Educação Superior do Oeste, Santa Catarina State Univ., Beloni Trombeta Zanin, 680-E, Chapecó, SC, 89815-630, Brazil
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9
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Daam MA, Chelinho S, Niemeyer JC, Owojori OJ, De Silva PMCS, Sousa JP, van Gestel CAM, Römbke J. Environmental risk assessment of pesticides in tropical terrestrial ecosystems: Test procedures, current status and future perspectives. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 181:534-547. [PMID: 31234068 DOI: 10.1016/j.ecoenv.2019.06.038] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 06/03/2019] [Accepted: 06/14/2019] [Indexed: 06/09/2023]
Abstract
Despite the increasing use of pesticides in tropical countries, research and legislative efforts have focused on their temperate counterparts. This paper presents a review of the literature on environmental risk assessment of pesticides for tropical terrestrial agroecosystems. It aims at evaluating potential differences in pesticide risk between temperate and tropical regions as well as to highlight research needs in the latter. Peculiarities of pesticide risks in tropical terrestrial agroecosystems are discussed in subsections 1) agricultural practices; 2) research efforts; 3) fate and exposure; 4) toxicity testing methods; and 5) sensitivity. The intensive and often inadequate pesticide application practices in tropical areas are likely to result in a relatively greater pesticide exposure in edge-of-field water bodies. Since pesticide fate may be different under tropical conditions, tropical scenarios for models estimating predicted environmental pesticide concentrations should be developed. Sensitivity comparisons do not indicate a consistent similar, greater or lower relative sensitivity of tropical soil organisms as compared to temperate organisms. However, several methods and procedures for application in the tropics need to be developed, which include: 1) identifying and collecting natural soils to be used as reference test substrates in tests; 2) identifying and discerning the range of sensitivity of native test species to soil contaminants; 3) developing test guidelines applicable to tropical/subtropical conditions; and 4) developing methods and procedures for higher tier testing for full development and implementation of environmental risk assessment schemes.
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Affiliation(s)
- Michiel A Daam
- CENSE, Department of Environmental Sciences and Engineering, Faculty of Sciences and Technology, New University of Lisbon, Quinta da Torre, 2829-516, Caparica, Portugal.
| | - Sónia Chelinho
- CFE - Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, P-3000 456, Coimbra, Portugal
| | - Júlia C Niemeyer
- Centre of Curitibanos, Federal University of Santa Catarina, Curitibanos, Santa Catarina, Brazil
| | - Olugbenga J Owojori
- Department of Zoology, Faculty of Science, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - P Mangala C S De Silva
- Department of Zoology, Faculty of Science, University of Ruhuna, Matara, 81000, Sri Lanka
| | - Jóse Paulo Sousa
- CFE - Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, P-3000 456, Coimbra, Portugal
| | - Cornelis A M van Gestel
- Department of Ecological Science, Faculty of Science, Vrije Universiteit, De Boelelaan 1085, 1081, HV Amsterdam, the Netherlands
| | - Jörg Römbke
- ECT Oekotoxikologie GmbH, Böttgerstr. 2-14, 65439, Flörsheim, Germany
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Jänsch S, Bauer J, Leube D, Otto M, Römbke J, Teichmann H, Waszak K. A new ecotoxicological test method for genetically modified plants and other stressors in soil with the black fungus gnat Bradysia impatiens (Diptera): current status of test development and dietary effects of azadirachtin on larval development and emergence rate. ENVIRONMENTAL SCIENCES EUROPE 2018; 30:38. [PMID: 30370193 PMCID: PMC6182620 DOI: 10.1186/s12302-018-0167-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 09/10/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Few suitable and standardized test methods are currently available to test the effects of genetically modified plants (GMP) on non-target organisms. To fill this gap and improve ecotoxicological testing for GMP, we developed a new soil ecotoxicological test method using sciarid larvae as test organisms. RESULTS Bradysia impatiens was identified as a candidate species. Species of the genus Bradysia occur in high numbers in European agroecosystems and B. impatiens can be reared in the laboratory in continuous culture. A functional basic test design was successfully developed. Newly hatched larvae were used as the initial life stage to cover most of the life cycle of the species during the test. Azadirachtin was identified as a suitable reference substance. In several tests, the effects of this substance on development time and emergence rate varied for different temperatures and test substrates. The toxicity was higher at 25 °C compared to 20 °C and in tropical artificial soil compared to coconut fiber substrate. CONCLUSIONS AND OUTLOOK Results suggest that the developed test system is suitable to enter a full standardization process, e.g., via the Organisation for Economic Co-operation and Development. Such a standardization would not only assist the risk assessment of GMP, but could include other stressors such as systemic pesticides or veterinary pharmaceuticals reaching the soil, e.g., via spreading manure. The use of sciarid flies as test organisms supports recommendations of EFSA, which stressed the ecological role of flies and encouraged including Diptera into test batteries.
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Affiliation(s)
- Stephan Jänsch
- ECT Oekotoxikologie GmbH, Böttgerstr. 2-14, 65439 Flörsheim, Germany
| | - Johannes Bauer
- ECT Oekotoxikologie GmbH, Böttgerstr. 2-14, 65439 Flörsheim, Germany
| | - David Leube
- ECT Oekotoxikologie GmbH, Böttgerstr. 2-14, 65439 Flörsheim, Germany
| | - Mathias Otto
- Federal Agency for Nature Conservation (BfN), Konstantinstr. 110, 53179 Bonn, Germany
| | - Jörg Römbke
- ECT Oekotoxikologie GmbH, Böttgerstr. 2-14, 65439 Flörsheim, Germany
| | - Hanka Teichmann
- Federal Agency for Nature Conservation (BfN), Konstantinstr. 110, 53179 Bonn, Germany
| | - Karolina Waszak
- ECT Oekotoxikologie GmbH, Böttgerstr. 2-14, 65439 Flörsheim, Germany
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Hackenberger DK, Palijan G, Lončarić Ž, Jovanović Glavaš O, Hackenberger BK. Influence of soil temperature and moisture on biochemical biomarkers in earthworm and microbial activity after exposure to propiconazole and chlorantraniliprole. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 148:480-489. [PMID: 29121590 DOI: 10.1016/j.ecoenv.2017.10.072] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 10/29/2017] [Accepted: 10/31/2017] [Indexed: 06/07/2023]
Abstract
Predicted climate change could impact the effects that various chemicals have on organisms. Increased temperature or change in precipitation regime could either enhance or lower toxicity of pesticides. The aim of this study is to assess how change in temperature and soil moisture affect biochemical biomarkers in Eisenia fetida earthworm and microbial activity in their excrements after exposure to a fungicide - propiconazole (PCZ) and an insecticide - chlorantraniliprole (CAP). For seven days, earthworms were exposed to the pesticides under four environmental conditions comprising combinations of two different temperatures (20°C and 25°C) and two different soil water holding capacities (30% and 50%). After exposure, in the collected earthworm casts the microbial activity was measured through dehydrogenase activity (DHA) and biofilm forming ability (BFA), and in the postmitochondrial fraction of earthworms the activities of acetylcholinesterase (AChE), catalase (CAT) and glutathione-S-transferase (GST) respectively. The temperature and the soil moisture affected enzyme activities and organism's response to pesticides. It was determined that a three-way interaction (pesticide concentration, temperature and moisture) is statistically significant for the CAT and GST after the CAP exposure, and for the AChE and CAT after the PCZ exposure. Interestingly, the AChE activity was induced by both pesticides at a higher temperature tested. The most important two-way interaction that was determined occurred between the concentration and temperature applied. DHA and BFA, as markers of microbial activity, were unevenly affected by PCZ, CAP and environmental conditions. The results of this experiment demonstrate that experiments with at least two different environmental conditions can give a very good insight into some possible effects that the climate change could have on the toxicity of pesticides. The interaction of environmental factors should play a more important role in the risk assessments for pesticides.
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Affiliation(s)
- Davorka K Hackenberger
- Department of Biology, University of Osijek, Cara Hadrijana 8A, HR-31000 Osijek, Croatia.
| | - Goran Palijan
- Department of Biology, University of Osijek, Cara Hadrijana 8A, HR-31000 Osijek, Croatia.
| | - Željka Lončarić
- Department of Biology, University of Osijek, Cara Hadrijana 8A, HR-31000 Osijek, Croatia.
| | - Olga Jovanović Glavaš
- Department of Biology, University of Osijek, Cara Hadrijana 8A, HR-31000 Osijek, Croatia.
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Zaller JG, König N, Tiefenbacher A, Muraoka Y, Querner P, Ratzenböck A, Bonkowski M, Koller R. Pesticide seed dressings can affect the activity of various soil organisms and reduce decomposition of plant material. BMC Ecol 2016; 16:37. [PMID: 27534619 PMCID: PMC4989535 DOI: 10.1186/s12898-016-0092-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 08/03/2016] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Seed dressing with pesticides is widely used to protect crop seeds from pest insects and fungal diseases. While there is mounting evidence that especially neonicotinoid seed dressings detrimentally affect insect pollinators, surprisingly little is known on potential side effects on soil biota. We hypothesized that soil organisms would be particularly susceptible to pesticide seed dressings as they get in direct contact with these chemicals. Using microcosms with field soil we investigated, whether seeds treated either with neonicotinoid insecticides or fungicides influence the activity and interaction of earthworms, collembola, protozoa and microorganisms. The full-factorial design consisted of the factor Seed dressing (control vs. insecticide vs. fungicide), Earthworm (no earthworms vs. addition Lumbricus terrestris L.) and collembola (no collembola vs. addition Sinella curviseta Brook). We used commercially available wheat seed material (Triticum aesticum L. cf. Lukullus) at a recommended seeding density of 367 m(-2). RESULTS Seed dressings (particularly fungicides) increased collembola surface activity, increased the number of protozoa and reduced plant decomposition rate but did not affect earthworm activity. Seed dressings had no influence on wheat growth. Earthworms interactively affected the influence of seed dressings on collembola activity, whereas collembola increased earthworm surface activity but reduced soil basal respiration. Earthworms also decreased wheat growth, reduced soil basal respiration and microbial biomass but increased soil water content and electrical conductivity. CONCLUSIONS The reported non-target effects of seed dressings and their interactions with soil organisms are remarkable because they were observed after a one-time application of only 18 pesticide treated seeds per experimental pot. Because of the increasing use of seed dressing in agriculture and the fundamental role of soil organisms in agroecosystems these ecological interactions should receive more attention.
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Affiliation(s)
- Johann G. Zaller
- Institute of Zoology, University of Natural Resources and Life Sciences Vienna (BOKU), Vienna, Austria
| | - Nina König
- Institute of Zoology, University of Natural Resources and Life Sciences Vienna (BOKU), Vienna, Austria
| | - Alexandra Tiefenbacher
- Institute of Zoology, University of Natural Resources and Life Sciences Vienna (BOKU), Vienna, Austria
| | - Yoko Muraoka
- Institute of Zoology, University of Natural Resources and Life Sciences Vienna (BOKU), Vienna, Austria
| | - Pascal Querner
- Institute of Zoology, University of Natural Resources and Life Sciences Vienna (BOKU), Vienna, Austria
| | - Andreas Ratzenböck
- Institute for Seed and Propagating Material, Phytosanitary Service and Apiculture, Austrian Agency for Health and Food Safety (AGES), Vienna, Austria
| | - Michael Bonkowski
- Department of Terrestrial Ecology, Institute of Zoology, University of Cologne, Cologne, Germany
| | - Robert Koller
- Department of Terrestrial Ecology, Institute of Zoology, University of Cologne, Cologne, Germany
- Forschungszentrum Jülich, Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Jülich, Germany
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13
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Zaller JG, König N, Tiefenbacher A, Muraoka Y, Querner P, Ratzenböck A, Bonkowski M, Koller R. Pesticide seed dressings can affect the activity of various soil organisms and reduce decomposition of plant material. BMC Ecol 2016. [PMID: 27534619 DOI: 10.1186/s12898-12016-10092-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023] Open
Abstract
BACKGROUND Seed dressing with pesticides is widely used to protect crop seeds from pest insects and fungal diseases. While there is mounting evidence that especially neonicotinoid seed dressings detrimentally affect insect pollinators, surprisingly little is known on potential side effects on soil biota. We hypothesized that soil organisms would be particularly susceptible to pesticide seed dressings as they get in direct contact with these chemicals. Using microcosms with field soil we investigated, whether seeds treated either with neonicotinoid insecticides or fungicides influence the activity and interaction of earthworms, collembola, protozoa and microorganisms. The full-factorial design consisted of the factor Seed dressing (control vs. insecticide vs. fungicide), Earthworm (no earthworms vs. addition Lumbricus terrestris L.) and collembola (no collembola vs. addition Sinella curviseta Brook). We used commercially available wheat seed material (Triticum aesticum L. cf. Lukullus) at a recommended seeding density of 367 m(-2). RESULTS Seed dressings (particularly fungicides) increased collembola surface activity, increased the number of protozoa and reduced plant decomposition rate but did not affect earthworm activity. Seed dressings had no influence on wheat growth. Earthworms interactively affected the influence of seed dressings on collembola activity, whereas collembola increased earthworm surface activity but reduced soil basal respiration. Earthworms also decreased wheat growth, reduced soil basal respiration and microbial biomass but increased soil water content and electrical conductivity. CONCLUSIONS The reported non-target effects of seed dressings and their interactions with soil organisms are remarkable because they were observed after a one-time application of only 18 pesticide treated seeds per experimental pot. Because of the increasing use of seed dressing in agriculture and the fundamental role of soil organisms in agroecosystems these ecological interactions should receive more attention.
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Affiliation(s)
- Johann G Zaller
- Institute of Zoology, University of Natural Resources and Life Sciences Vienna (BOKU), Vienna, Austria.
| | - Nina König
- Institute of Zoology, University of Natural Resources and Life Sciences Vienna (BOKU), Vienna, Austria
| | - Alexandra Tiefenbacher
- Institute of Zoology, University of Natural Resources and Life Sciences Vienna (BOKU), Vienna, Austria
| | - Yoko Muraoka
- Institute of Zoology, University of Natural Resources and Life Sciences Vienna (BOKU), Vienna, Austria
| | - Pascal Querner
- Institute of Zoology, University of Natural Resources and Life Sciences Vienna (BOKU), Vienna, Austria
| | - Andreas Ratzenböck
- Institute for Seed and Propagating Material, Phytosanitary Service and Apiculture, Austrian Agency for Health and Food Safety (AGES), Vienna, Austria
| | - Michael Bonkowski
- Department of Terrestrial Ecology, Institute of Zoology, University of Cologne, Cologne, Germany
| | - Robert Koller
- Department of Terrestrial Ecology, Institute of Zoology, University of Cologne, Cologne, Germany
- Forschungszentrum Jülich, Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Jülich, Germany
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14
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Pan H, Xu L, Noland JE, Li H, Siegfried BD, Zhou X. Assessment of Potential Risks of Dietary RNAi to a Soil Micro-arthropod, Sinella curviseta Brook (Collembola: Entomobryidae). FRONTIERS IN PLANT SCIENCE 2016; 7:1028. [PMID: 27471512 PMCID: PMC4945638 DOI: 10.3389/fpls.2016.01028] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 06/30/2016] [Indexed: 05/08/2023]
Abstract
RNAi-based genetically engineered (GE) crops for the management of insect pests are likely to be commercialized by the end of this decade. Without a workable framework for conducting the ecological risk assessment (ERA) and a standardized ERA protocol, however, the utility of RNAi transgenic crops in pest management remains uncertain. The overall goal of this study is to assess the risks of RNAi-based GE crops on a non-target soil micro-arthropod, Sinella curviseta, which could be exposed to plant-protected dsRNAs deposited in crop residues. Based on the preliminary research, we hypothesized that insecticidal dsRNAs targeting at the western corn rootworm, Diabrotica virgifera virgifera, a billion-dollar insect pest, has no adverse impacts on S. curviseta, a soil decomposer. Following a tiered approach, we tested this risk hypothesis using a well-designed dietary RNAi toxicity assay. To create the worst-case scenario, the full-length cDNA of v-ATPase subunit A from S. curviseta were cloned and a 400 bp fragment representing the highest sequence similarity between target pest and non-target arthropods was selected as the template to synthesize insecticidal dsRNAs. Specifically, 10-days-old S. curviseta larvae were subjected to artificial diets containing v-ATPase A dsRNAs from both D. v. virgifera (dsDVV) and S. curviseta (dsSC), respectively, a dsRNA control, β-glucuronidase, from plant (dsGUS), and a vehicle control, H2O. The endpoint measurements included gene expression profiles, survival, and life history traits, such as developmental time, fecundity, hatching rate, and body length. Although, S. curviseta larvae developed significantly faster under the treatments of dsDVV and dsSC than the vehicle control, the combined results from both temporal RNAi effect study and dietary RNAi toxicity assay support the risk hypothesis, suggesting that the impacts of ingested arthropod-active dsRNAs on this representative soil decomposer are negligible.
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Affiliation(s)
- Huipeng Pan
- Department of Entomology, University of Kentucky, LexingtonKY, USA
| | - Linghua Xu
- Department of Entomology, University of Kentucky, LexingtonKY, USA
| | | | - Hu Li
- Department of Entomology, University of Kentucky, LexingtonKY, USA
| | - Blair D. Siegfried
- Department of Entomology and Nematology, University of Florida, GainesvilleFL, USA
| | - Xuguo Zhou
- Department of Entomology, University of Kentucky, LexingtonKY, USA
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15
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Abstract
Spiders can cause trophic cascades affecting litter decomposition rates. However, it remains unclear how spiders with different foraging strategies influence faunal communities, or present cascading effects on decomposition. Furthermore, increased dry periods predicted in future climates will likely have important consequences for trophic interactions in detritus-based food webs. We investigated independent and interactive effects of spider predation and drought on litter decomposition in a tropical forest floor. We manipulated densities of dominant spiders with actively hunting or sit-and-wait foraging strategies in microcosms which mimicked the tropical-forest floor. We found a positive trophic cascade on litter decomposition was triggered by actively hunting spiders under ambient rainfall, but sit-and-wait spiders did not cause this. The drought treatment reversed the effect of actively hunting spiders on litter decomposition. Under drought conditions, we observed negative trophic cascade effects on litter decomposition in all three spider treatments. Thus, reduced rainfall can alter predator-induced indirect effects on lower trophic levels and ecosystem processes, and is an example of how such changes may alter trophic cascades in detritus-based webs of tropical forests.
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Zortéa T, Baretta D, Maccari AP, Segat JC, Boiago ES, Sousa JP, Da Silva AS. Influence of cypermethrin on avoidance behavior, survival and reproduction of Folsomia candida in soil. CHEMOSPHERE 2015; 122:94-98. [PMID: 25434267 DOI: 10.1016/j.chemosphere.2014.11.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 11/07/2014] [Accepted: 11/10/2014] [Indexed: 06/04/2023]
Abstract
Cypermethrin is a pyrethroid widely used in agriculture and in control of animal ectoparasites, being effective against a large number of insects. Therefore, this study aimed to evaluate the effects of cypermethrin on soil fauna using reproduction and behavior ecotoxicological tests with the springtail Folsomia candida. The surface layer of a soil characteristic of the western region of the Santa Catarina State, classified as Typic Dystrupept, was used as test substrate. The treatments on both tests consisted of five concentrations of cypermethrin (0, 7.5, 15.0, 22.5, and 30.0mgkg(-)(1)) corresponding to 0, 1.5, 3.0, 4.5, and 6.0gm(-2), respectively. This range was chosen according to technical instruction for the use of this product in broilers beds (that are used afterwards as organic fertilizer in soil) that recommends 15mgkg(-1) (3.0gm(-2)). The results obtained with tests for F. candida showed toxicity at all doses tested, following a dose-related response resulting in reduction in survival rate (LC50 of 18.41mgkg(-1), equivalent to 3.8gm(-2)), in the number of juveniles (EC50 of 15.05mgkg(-1), corresponding to 3.01gm(-2)), and an increase in avoidance response (AC50 of 29mgkg(-1), corresponding to 5.8gm(-2)). Although more studies are needed focusing on the fate of cypermethrin in soil when the poultry beds are used as fertilizer and how it may affect soil fauna, data obtained in this study, by showing effects within the range of the doses that are recommended implies that caution and possible mitigation measures should be taken when using this compound.
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Affiliation(s)
- Talyta Zortéa
- Department of Animal Science, Centro de Educação Superior do Oeste da Universidade do Estado de Santa Catarina (UDESC), Chapecó, Brazil
| | - Dilmar Baretta
- Department of Animal Science, Centro de Educação Superior do Oeste da Universidade do Estado de Santa Catarina (UDESC), Chapecó, Brazil.
| | - Ana Paula Maccari
- Department of Soil Science, Centro de Ciências Agroveterinárias da Universidade do Estado de Santa Catarina (UDESC), Lages, SC, Brazil
| | - Julia C Segat
- Department of Soil Science, Centro de Ciências Agroveterinárias da Universidade do Estado de Santa Catarina (UDESC), Lages, SC, Brazil
| | - Elaine S Boiago
- Department of Animal Science, Centro de Educação Superior do Oeste da Universidade do Estado de Santa Catarina (UDESC), Chapecó, Brazil
| | - José Paulo Sousa
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Aleksandro S Da Silva
- Department of Animal Science, Centro de Educação Superior do Oeste da Universidade do Estado de Santa Catarina (UDESC), Chapecó, Brazil.
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Bandow C, Coors A, Karau N, Römbke J. Interactive effects of λ-cyhalothrin, soil moisture, and temperature on Folsomia candida and Sinella curviseta (Collembola). ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2014; 33:654-661. [PMID: 24288263 DOI: 10.1016/j.apsoil.2014.04.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Revised: 04/12/2013] [Accepted: 11/22/2013] [Indexed: 05/21/2023]
Abstract
The authors investigated whether and how 2 environmental factors could influence the toxicity of a pyrethroid to 2 representatives of an important group of soil organisms. The impacts of different temperatures (20 °C and 26 °C) and soil moisture levels (30%, 50%, and 70% of water holding capacity) were investigated in combination with the insecticide λ-cyhalothrin on the reproduction success of Folsomia candida and Sinella curviseta in a full factorial design. Testing was based on the standard collembolan reproduction test (Organisation for Economic Co-operation and Development, guideline 232) following an effect concentration design. The results showed an effect of environmental and chemical factors on the number of juveniles of these animals. Particularly in dry soil, the reproduction of both species was reduced, while higher soil moisture levels influenced the number of juveniles positively compared with the middle soil moisture level. In general, however, higher soil moisture led to increased sensitivity to λ-cyhalothrin. In both organisms, temperature affected the toxicity of the pesticide but in different directions: high temperature led to higher toxicity in F. candida but to lower toxicity in S. curviseta.
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Affiliation(s)
- Cornelia Bandow
- ECT Oekotoxikologie, Flörsheim, Germany; Biodiversity and Climate Research Centre BiK-F, Frankfurt/Main, Germany; Department of Aquatic Ecotoxicology, Goethe University Frankfurt, Frankfurt/Main, Germany
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