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Duarte JL, Duchon S, Di Filippo LD, Chorilli M, Corbel V. Larvicidal properties of terpenoid-based nanoemulsions against the dengue vector Aedes aegypti L. and their potential toxicity against non-target organism. PLoS One 2024; 19:e0293124. [PMID: 38324615 PMCID: PMC10849395 DOI: 10.1371/journal.pone.0293124] [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: 06/03/2023] [Accepted: 09/10/2023] [Indexed: 02/09/2024] Open
Abstract
The development of insecticide resistance in mosquitoes of public health importance has encouraged extensive research into innovative vector control methods. Terpenes are the largest among Plants Secondary Metabolites and have been increasingly studied for their potential as insecticidal control agents. Although promising, terpenes are insoluble in water, and they show low residual life which limits their application for vector control. In this study, we developed and evaluated the performances of terpenoid-based nanoemulsions (TNEs) containing myrcene and p-cymene against the dengue vector Aedes aegypti and investigated their potential toxicity against non-target organisms. Our results showed that myrcene and p-cymene showed moderate larvicidal activity against mosquito larvae compared to temephos an organophosphate widely used for mosquito control. However, we showed similar efficacy of TNEs against both susceptible and highly insecticide-resistant mosquitoes from French Guyana, hence suggesting an absence of cross-resistance with conventional insecticides. We also showed that TNEs remained effective for up to 45 days in laboratory conditions. The exposure of zebrafish to TNEs triggered behavioral changes in the fish at high doses but they did not alter the normal functioning of zebrafish organs, suggesting a good tolerability of non-target organisms to these molecules. Overall, this study provides new insights into the insecticidal properties and toxicity of terpenes and terpenoid-based formulations and confirms that TNE may offer interesting prospects for mosquito control as part of integrated vector management.
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Affiliation(s)
- Jonatas Lobato Duarte
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Stéphane Duchon
- Institut de Recherche Pour le Développement (IRD), MIVEGEC, CNRS, IRD, Univ. Montpellier, Montpellier, France
| | - Leonardo Delello Di Filippo
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Marlus Chorilli
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Vincent Corbel
- Institut de Recherche Pour le Développement (IRD), MIVEGEC, CNRS, IRD, Univ. Montpellier, Montpellier, France
- Laboratório de Fisiologia e Controle de Artrópodes Vetores (Laficave), Fundação Oswaldo Cruz (FIOCRUZ), Instituto Oswaldo Cruz (IOC), Rio de Janeiro–RJ, Brazil
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2
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Huang D, Li S, Lu Y, Sha M, Li J. Effects of diflubenzuron on shrimp (Neocaridina palmata) in freshwater systems dominated by submerged plant (Ceratophyllum demersum). CHEMOSPHERE 2023; 313:137567. [PMID: 36529168 DOI: 10.1016/j.chemosphere.2022.137567] [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: 10/29/2022] [Revised: 12/06/2022] [Accepted: 12/13/2022] [Indexed: 06/17/2023]
Abstract
Diflubenzuron (DFB) is a benzoylbenzourea insect growth regulator widely used in agriculture, horticulture, and vector control. Therefore, it can easily pollute water bodies and cause harm to aquatic life and ecosystems. To evaluate the impact of DFB on atyid shrimp Neocaridina palmate, the insecticide was applied, at 0, 0.74, 2.222, 6.667, 20, and 60 μg L-1, to indoor systems dominated by submerged plant Ceratophyllum demersum. The highest no observed effect concentration and the lowest observed effect concentration was determined to be 0.167 and 0.536 μg L-1, respectively, as it was counted with either activity or immune-reactive content of chitobiase. Subcellular indices were more sensitive, with a lowest observed effect concentration below 0.107 μg L-1. Principal response curves (PRC) and principal component analysis (PCA) showed that DFB reduced the biomass of C. demersum and the content of chlorophyll-a and phycocyanin in the media. The biomass of periphyton were promoted at the high concentrations. According to the PRC and PCA, DFB reduced the bacterial population related to photoautotrophy, sulphur reduction, and sulphur oxidation and it promoted those related to photoheterotrophy, nitrate reduction, nitrate denitrification, and nitrogen fixation. Besides, DFB reduced fungi related to denitrification. PRC and PCA showed that DFB had a negative impact on pH and dissolved oxygen levels and a positive impact on NH4-N, NO2-N, PO4-P, and conductivity, suggesting the deterioration in quality of water. This study provided useful information for understanding the ecotoxicological effects of DFB at population and community levels.
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Affiliation(s)
- Daoshuai Huang
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Shaonan Li
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China.
| | - Yu Lu
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Meng Sha
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Jiaxin Li
- Institute of Pesticide and Environmental Toxicology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
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3
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Ferraz CA, Pastorinho MR, Palmeira-de-Oliveira A, Sousa ACA. Ecotoxicity of plant extracts and essential oils: A review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 292:118319. [PMID: 34656680 DOI: 10.1016/j.envpol.2021.118319] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 09/27/2021] [Accepted: 10/07/2021] [Indexed: 06/13/2023]
Abstract
Plant-based products such as essential oils and other extracts have been used for centuries due to their beneficial properties. Currently, their use is widely disseminated through a variety of industries and new applications are continuously emerging. For these reasons, they are produced industrially in large quantities and consequently they have the potential to reach the environment. However, the potential effects that these products have on the ecosystems' health are mostly unknown. In recent years, the scientific community started to focus on the possible toxic effects of essential oils and plant extracts towards non-target organisms. As a result, an increasing body of knowledge has emerged. This review describes the current state of the art on the toxic effects that essential oils and plant extracts have towards organisms from different trophic levels, including producers, primary consumers, and secondary consumers. The majority of the studies (76.5%) focuses on the aquatic environment, particularly in aquatic invertebrates (45.1%) with only 23.5% of the studies focusing on the potential toxicity of plant-derived products on terrestrial ecosystems. While some essential oils and extracts have been described to have no toxic effects to the selected organisms or the toxic effects were only observable at high concentrations, others were reported to be toxic at concentrations below the limit set by international regulations, some of them at very low concentrations. In fact, L(E)C50 values as low as 0.0336 mg.L-1, 0.0005 mg.L-1 and 0.0053 mg.L-1 were described for microalgae, crustaceans and fish, respectively. Generally, essential oils exhibit higher toxicity than extracts. However, when the extracts are obtained from plants that are known to produce toxic metabolites, the extracts can be more toxic than essential oils. Overall, and despite being generally considered "eco-friendly" products and safer than they synthetic counterparts, some essential oils and plant extracts are toxic towards non-target organisms. Given the increasing interest from industry on these plant-based products further research using international standardized protocols is mandatory.
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Affiliation(s)
- Celso Afonso Ferraz
- NuESA-Health and Environment Study Unit, Faculty of Health Sciences, University of Beira Interior, 6200-506, Covilhã, Portugal; Health Sciences Research Centre (CICS), University of Beira Interior, 6200-506, Covilhã, Portugal
| | - M Ramiro Pastorinho
- NuESA-Health and Environment Study Unit, Faculty of Health Sciences, University of Beira Interior, 6200-506, Covilhã, Portugal; Department of Medical and Health Sciences, School of Health and Human Development, University of Évora, 7000-671 Évora, Portugal; Comprehensive Health Research Centre (CHRC), University of Évora, Évora, Portugal
| | - Ana Palmeira-de-Oliveira
- Health Sciences Research Centre (CICS), University of Beira Interior, 6200-506, Covilhã, Portugal; Labfit-Health Products Research and Development Lda, UBImedical, Estrada Nacional 506, Covilhã, 6200-284, Portugal
| | - Ana C A Sousa
- NuESA-Health and Environment Study Unit, Faculty of Health Sciences, University of Beira Interior, 6200-506, Covilhã, Portugal; Comprehensive Health Research Centre (CHRC), University of Évora, Évora, Portugal; Department of Biology, School of Sciences and Technology, University of Évora, 7002-554, Évora, Portugal.
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4
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Hapairai LK, Mysore K, James LD, Scheel ND, Realey JS, Sun L, Gerber LE, Feng RS, Romero-Severson E, Mohammed A, Duman-Scheel M, Severson DW. Evaluation of large volume yeast interfering RNA lure-and-kill ovitraps for attraction and control of Aedes mosquitoes. MEDICAL AND VETERINARY ENTOMOLOGY 2021; 35:361-370. [PMID: 33377553 PMCID: PMC11095413 DOI: 10.1111/mve.12504] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 11/23/2020] [Accepted: 12/14/2020] [Indexed: 06/12/2023]
Abstract
Aedes mosquitoes (Diptera: Culicidae), principle vectors of several arboviruses, typically lay eggs in man-made water-filled containers located near human dwellings. Given the widespread emergence of insecticide resistance, stable and biofriendly alternatives for mosquito larviciding are needed. Laboratory studies have demonstrated that inactivated yeast interfering RNA tablets targeting key larval developmental genes can be used to facilitate effective larvicidal activity while also promoting selective gravid female oviposition behaviour. Here we examined the efficacy of transferring this technology toward development of lure-and-kill ovitraps targeting Aedes aegypti (L.) and Aedes albopictus (Skuse) female mosquitoes. Insectary, simulated field and semi-field experiments demonstrated that two mosquito-specific yeast interfering RNA pesticides induce high levels of mortality among larvae of both species in treated large volume containers. Small-scale field trials conducted in Trinidad, West Indies demonstrated that large volume ovitrap containers baited with inactivated yeast tablets lure significantly more gravid females than traps containing only water and were highly attractive to both A. aegypti and A. albopictus females. These studies indicate that development of biorational yeast interfering RNA-baited ovitraps may represent a new tool for control of Aedes mosquitoes, including deployment in existing lure-and-kill ovitrap technologies or traditional container larviciding programs.
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Affiliation(s)
- Limb K. Hapairai
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, South Bend, IN, 46617 U.S.A
- Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, 46556 U.S.A
| | - Keshava Mysore
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, South Bend, IN, 46617 U.S.A
- Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, 46556 U.S.A
| | - Lester D. James
- Department of Life Sciences, University of the West Indies, St. Augustine, Trinidad, Trinidad and Tobago
| | - Nicholas D. Scheel
- Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, 46556 U.S.A
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, 46556 U.S.A
| | - Jacob S. Realey
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, South Bend, IN, 46617 U.S.A
- Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, 46556 U.S.A
| | - Longhua Sun
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, South Bend, IN, 46617 U.S.A
- Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, 46556 U.S.A
| | - Laura E. Gerber
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, South Bend, IN, 46617 U.S.A
- Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, 46556 U.S.A
| | - Rachel Shui Feng
- Department of Life Sciences, University of the West Indies, St. Augustine, Trinidad, Trinidad and Tobago
| | - Ethan Romero-Severson
- Theoretical Biology and Biophysics Group, Los Alamos National Laboratory, Los Alamos, NM, 87545 U.S.A
| | - Azad Mohammed
- Department of Life Sciences, University of the West Indies, St. Augustine, Trinidad, Trinidad and Tobago
| | - Molly Duman-Scheel
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, South Bend, IN, 46617 U.S.A
- Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, 46556 U.S.A
| | - David W. Severson
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, South Bend, IN, 46617 U.S.A
- Eck Institute for Global Health, University of Notre Dame, Notre Dame, IN, 46556 U.S.A
- Department of Life Sciences, University of the West Indies, St. Augustine, Trinidad, Trinidad and Tobago
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, 46556 U.S.A
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5
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Weeks ENI, Kroll KJ, Johnson TS, Colquhoun T, Cuda JP, Denslow ND, Stevens BR. Novel effective mosquito larvicide DL-methionine: Lack of toxicity to non-target aquatic organisms. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 213:112013. [PMID: 33601173 DOI: 10.1016/j.ecoenv.2021.112013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 01/18/2021] [Accepted: 01/28/2021] [Indexed: 06/12/2023]
Abstract
Mosquito larvicides are an effective tool for reducing numbers of adult females that bite and potentially spread pathogenic organisms. Methionine, an essential amino acid in humans, has been previously demonstrated to be a highly effective larvicide against four (4) mosquito species in three (3) genera, Anopheles, Culex and Aedes. The aim of the present study was to determine the potential impact on non-target aquatic organisms of methionine applied as a mosquito larvicide. DL-methionine concentrations ranging from 0.06% to 1.00% were used; wherein the highest concentration of 1.00% would result in 100% mortality within 48 h in mosquitoes. Acute toxicity assays were conducted in accordance with the US Environmental Protection Agency (US EPA) guidelines for the water flea (Daphnia magna Straus; Cladocera: Daphniidae) and the fathead minnow (Pimephales promelas Rafinesque; Cypriniformes: Cyprinidae). Water fleas and fish were placed directly into the solutions in glass containers and tanks for 48-hours and 96-hours, respectively. When applied within the above-mentioned range of effective mosquito larvicide concentrations, DL-methionine meets US EPA criteria as a "practically non-toxic" pesticide for both species. These results suggest that methionine is a viable alternative to current mosquito larvicide options, which are typically classified as moderately to highly toxic and may be a valuable addition to a mosquito integrated pest management program.
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Affiliation(s)
- Emma N I Weeks
- Entomology and Nematology Department, University of Florida, Gainesville, FL 32611, USA.
| | - Kevin J Kroll
- Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32611, USA
| | - Timothy S Johnson
- The Department of Environmental Horticulture, UF/IFAS Plant Innovation Center, University of Florida, Gainesville, FL 32611, USA
| | - Thomas Colquhoun
- The Department of Environmental Horticulture, UF/IFAS Plant Innovation Center, University of Florida, Gainesville, FL 32611, USA
| | - James P Cuda
- Entomology and Nematology Department, University of Florida, Gainesville, FL 32611, USA
| | - Nancy D Denslow
- Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32611, USA; Department of Biochemistry and Molecular Biology, College of Medicine, University of Florida, Gainesville, FL 32611, USA
| | - Bruce R Stevens
- Department of Physiology and Functional Genomics, University of Florida, Gainesville, FL 32610, USA
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6
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Targanski SK, Sousa JR, de Pádua GM, de Sousa JM, Vieira LC, Soares MA. Larvicidal activity of substituted chalcones against Aedes aegypti (Diptera: Culicidae) and non-target organisms. PEST MANAGEMENT SCIENCE 2021; 77:325-334. [PMID: 32729190 DOI: 10.1002/ps.6021] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 07/17/2020] [Accepted: 07/29/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND The expansion of Aedes aegypti (Diptera: Culicidae) population has increased the number of cases of arboviruses, in part due to the inefficiency and toxicity of the chemical control methods available to control this vector. We synthesized 19 chalcone derivatives and examined their activity against Ae. aegypti larvae in order to select larvicidal compounds that are non-toxic to other organisms. RESULTS Seven chalcone derivatives (3a, 3e, 3f, 6a, 6c, 6d, and 6f) had lethal concentrations of substituted chalcones capable of killing 50% (LC50 ) values lower than 100 mg mL-1 at 24 h post-treatment, which is the dose that the World Health Organization recommends for the selection of promising larvicides. The type of substituent added to (E)-1,3-diphenylprop-2-en-1-one (3a) markedly affected the larvicidal activity. Addition of chlorine, bromine and methoxy groups to the aromatic rings reduced the larvicidal activity, while replacement of the B-ring (phenyl) by a furan ring significantly increased the larvicidal activity. The furan-chalcone (E)-3-(4-bromophenyl)-1-(furan-2-yl)prop-2-en-1-one (6c) killed Ae. aegypti larvae (LC50 = 6.66 mg mL-1 ; LC90 = 9.97 mg mL-1 ) more effectively than the non-substituted chalcone (3a) (LC50 = 14.43 mg mL-1 ; LC90 = 20.96 mg mL-1 ), and was not toxic to the insect Galleria mellonella, to the protozoan Tetrahymena pyriformis, and to the algae Chorella vulgaris. CONCLUSIONS The substitution pattern of chalcones influenced their larvicidal activity. In the set of compounds tested, (E)-3-(4-bromophenyl)-1-(furan-2-yl)prop-2-en-1-one (6c) was the most effective larvicide against Ae. aegypti, with no clear signs of toxicity to other animal models. Its mechanism of action and effectiveness under field conditions remain to be determined.
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Affiliation(s)
- Sabrina K Targanski
- Departamento de Botânica e Ecologia, Universidade Federal de Mato Grosso, Cuiabá, Brazil
| | - Janaína R Sousa
- Departamento de Botânica e Ecologia, Universidade Federal de Mato Grosso, Cuiabá, Brazil
| | - Geilly Ms de Pádua
- Departamento de Química, Universidade Federal de Mato Grosso, Cuiabá, Brazil
| | - Jéssica M de Sousa
- Departamento de Química, Universidade Federal de Mato Grosso, Cuiabá, Brazil
| | - Lucas Cc Vieira
- Faculdade de Engenharia, Universidade Federal de Mato Grosso, Várzea Grande, Brazil
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Venturini FP, de Souza LM, Garbuio M, Inada NM, de Souza JP, Kurachi C, de Oliveira KT, Bagnato VS. Environmental safety and mode of action of a novel curcumin-based photolarvicide. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:29204-29217. [PMID: 32430723 DOI: 10.1007/s11356-020-09210-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 05/06/2020] [Indexed: 06/11/2023]
Abstract
Aedes aegypti is the vector of important diseases like dengue, zika, chikungunya, and yellow fever. Vector control is pivotal in combating the spread of these mosquito-borne illnesses. Photoactivable larvicide curcumin obtained from Curcuma longa Linnaeus has shown high potential for Ae. aegypti larvae control. However, the toxicity of this photosensitizer (PS) might jeopardize non-target aquatic organisms. The aim of this study was to evaluate the toxicity of this PS to Daphnia magna and Danio rerio, besides assessing its mode of action through larvae biochemical and histological studies. Three PS formulations were tested: PS in ethanol+DMSO, PS in sucrose, and PS in D-mannitol. The LC50 of PS in ethanol+DMSO to D. rerio was 5.9 mg L-1, while in D. magna the solvents were extremely toxic, and LC50 was not estimated. The PS formulations in sugars were not toxic to neither of the organisms. Reactive oxygen species (ROS) were generated in D. magna exposed to 50 mg L-1 of PS in D-mannitol, and D. rerio did not elicit this kind of response. D. magna feeding rates were not affected by the PS in D-mannitol. Concerning Ae. aegypti larvae, there were changes in reduced glutathione and protein levels, while catalase activity remained stable after exposure to PS in D-mannitol and sunlight. Histological changes were observed in larvae exposed to PS in sucrose and D-mannitol, most of them irreversible and deleterious. Our results show the feasibility of this photolarvicide use in Ae. aegypti larvae control and its safety to non-target organisms. These data are crucial to this original vector control approach implementation in public health policies.
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Affiliation(s)
- Francine Perri Venturini
- Nanomedicine and Nanotoxicology Group, São Carlos Institute of Physics, University of São Paulo, Sao Carlos, São Paulo, 13560-970, Brazil.
- Optical Group, São Carlos Institute of Physics, University of São Paulo, Sao Carlos, São Paulo, 13560-970, Brazil.
| | - Larissa Marila de Souza
- Optical Group, São Carlos Institute of Physics, University of São Paulo, Sao Carlos, São Paulo, 13560-970, Brazil
- PPG Biotec, Federal University of São Carlos, Sao Carlos, São Paulo, 13565-905, Brazil
| | - Matheus Garbuio
- Optical Group, São Carlos Institute of Physics, University of São Paulo, Sao Carlos, São Paulo, 13560-970, Brazil
- PPG Biotec, Federal University of São Carlos, Sao Carlos, São Paulo, 13565-905, Brazil
| | - Natalia Mayumi Inada
- Optical Group, São Carlos Institute of Physics, University of São Paulo, Sao Carlos, São Paulo, 13560-970, Brazil
| | - Jaqueline Pérola de Souza
- Nanomedicine and Nanotoxicology Group, São Carlos Institute of Physics, University of São Paulo, Sao Carlos, São Paulo, 13560-970, Brazil
| | - Cristina Kurachi
- Optical Group, São Carlos Institute of Physics, University of São Paulo, Sao Carlos, São Paulo, 13560-970, Brazil
| | | | - Vanderlei Salvador Bagnato
- Optical Group, São Carlos Institute of Physics, University of São Paulo, Sao Carlos, São Paulo, 13560-970, Brazil
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Santos VSV, Silva CE, Oliveira CM, de Morais CR, Limongi JE, Pereira BB. Evaluation of toxicity and environmental safety in use of spinosad to rationalize control strategies against Aedes aegypti. CHEMOSPHERE 2019; 226:166-172. [PMID: 30927668 DOI: 10.1016/j.chemosphere.2019.03.129] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 03/18/2019] [Accepted: 03/19/2019] [Indexed: 06/09/2023]
Abstract
Spinosad is a naturally-occurring insecticide used for the management of Ae. aegypti larvae. The assessment of ecotoxicological parameters of spinosad is required for verifying the environmentally-friendly behavior of the compound and for evaluating toxicity values on non-target species. Thus, the aim of the study was to conduct toxicity tests using Daphnia magna as model organism after exposure to different concentrations of spinosad. Immobility effects were observed in both acute and chronic toxicity tests at the concentration of 2.5 μg/L, and D. magna exhibited an EC50-48 h of 4.1 μg/L and EC50-7d of 9.3 μg/L. Also, the reproductive test showed a significant increase in the time of first reproduction and decrease in the number of neonates per female. However, due to the rapid decay of spinosad, other reproductive parameters were not markedly affected. Thereby, considering the satisfactory control performance against Aedes aegypti, a 100-fold lower concentration of spinosad can be used against the larvae, and owing to the residual efficacy observed, the application of the pesticide in the field may be rationalized while offering environmental safety.
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Affiliation(s)
- Vanessa Santana Vieira Santos
- Federal University of Uberlândia, Institute of Biotechnology, Umuarama Campus, Avenida Pará, 1720, 38, 400-902, Uberlândia, Minas Gerais, Brazil.
| | - Carlos Eduardo Silva
- Federal University of Uberlândia, Institute of Geography, Santa Mônica Campus, Avenida João Naves de Ávila, 2121, 38.408-100, Uberlândia, Minas Gerais, Brazil
| | - Cynthia Martins Oliveira
- Federal University of Uberlândia, Institute of Geography, Santa Mônica Campus, Avenida João Naves de Ávila, 2121, 38.408-100, Uberlândia, Minas Gerais, Brazil
| | - Cássio Resende de Morais
- Federal University of Uberlândia, Institute of Biotechnology, Umuarama Campus, Avenida Pará, 1720, 38, 400-902, Uberlândia, Minas Gerais, Brazil
| | - Jean Ezequiel Limongi
- Federal University of Uberlândia, Institute of Geography, Santa Mônica Campus, Avenida João Naves de Ávila, 2121, 38.408-100, Uberlândia, Minas Gerais, Brazil
| | - Boscolli Barbosa Pereira
- Federal University of Uberlândia, Institute of Biotechnology, Umuarama Campus, Avenida Pará, 1720, 38, 400-902, Uberlândia, Minas Gerais, Brazil; Federal University of Uberlândia, Institute of Geography, Santa Mônica Campus, Avenida João Naves de Ávila, 2121, 38.408-100, Uberlândia, Minas Gerais, Brazil.
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9
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Nunes RKV, Martins UN, Brito TB, Nepel A, Costa EV, Barison A, Santos RLC, Cavalcanti SCH. Evaluation of (-)-borneol derivatives against the Zika vector, Aedes aegypti and a non-target species, Artemia sp. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:31165-31174. [PMID: 30187415 DOI: 10.1007/s11356-018-2809-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 07/19/2018] [Indexed: 06/08/2023]
Abstract
Zika, dengue, and chikungunya are vector-borne diseases of pronounced concern transmitted by the mosquito Aedes aegypti Linn. (Diptera: Culicidae). The most important method to avoid outbreaks is to control mosquito spreading by the employment of insecticides and larvicides. Failure to control mosquito dispersal is mostly accounted to Ae. aegypti resistance to currently available larvicides and insecticides, encouraging the development of novel pesticides. In addition, the excessive use of larvicides poses serious threats to human health and the environment. Evaluation of natural products as larvicides in an attempt to overcome this situation is often found in the literature because products originated from nature are considered less toxic to non-target species and more eco-friendly. (-)-Borneol is a bicyclic monoterpene present in essential oils with moderate larvicidal activity. On account of these facts, it was of our interest to synthesize (-)-borneol ester derivatives aiming to study its structure-activity relationships against Ae. aegypti larvae. With the goal to estimate toxicity to a non-target species, evaluation of the lethal concentration 50% (LC50) on Artemia sp. (Artemiidae) and calculation of selectivity towards Ae. aegypti were carried out. The most potent derivative, (-)-Bornyl chloroacetate, exhibited the highest suitability index, demonstrating lower environmental toxicity than other borneol ester derivatives. A parabolic relationship between (-)-borneol esters larvicidal activity and partition coefficient (Log P) was achieved and a correlation equation obtained, validating the importance of lipophilicity to the larvicidal activity of these compounds.
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Affiliation(s)
- Rafaela K V Nunes
- Medicinal Chemistry Laboratory, Pharmacy Department, Federal University of Sergipe, São Cristóvão, SE, 49100-000, Brazil
| | - Ulisses N Martins
- Medicinal Chemistry Laboratory, Pharmacy Department, Federal University of Sergipe, São Cristóvão, SE, 49100-000, Brazil
| | - Thaysnara B Brito
- Medicinal Chemistry Laboratory, Pharmacy Department, Federal University of Sergipe, São Cristóvão, SE, 49100-000, Brazil
| | - Angelita Nepel
- Nuclear Magnetic Resonance Laboratory, Chemistry Department, Federal University of Paraná, PO Box 19081, Curitiba, PR, 81531-990, Brazil
| | - Emmanoel V Costa
- Chemistry Department, Institute of Applied Sciences, Federal University of Amazonas, Manaus, Brazil
| | - Andersson Barison
- Nuclear Magnetic Resonance Laboratory, Chemistry Department, Federal University of Paraná, PO Box 19081, Curitiba, PR, 81531-990, Brazil
| | - Roseli L C Santos
- Parasitology Laboratory, Morphology Department, Federal University of Sergipe, São Cristóvão, SE, 49100-000, Brazil
| | - Sócrates C H Cavalcanti
- Medicinal Chemistry Laboratory, Pharmacy Department, Federal University of Sergipe, São Cristóvão, SE, 49100-000, Brazil.
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Lopes CVA, Albuquerque GSCD. Agrotóxicos e seus impactos na saúde humana e ambiental: uma revisão sistemática. SAÚDE EM DEBATE 2018. [DOI: 10.1590/0103-1104201811714] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
RESUMO Atualmente, o Brasil é o maior consumidor de agrotóxicos do mundo. Diversos estudos comprovam os malefícios para a saúde humana e ambiental da exposição aos agrotóxicos. Realizou-se uma revisão sistemática no período de 2011 a 2017 acerca desse tema em bases de dados científicos. Foram incluídos 116 estudos que demonstraram o impacto negativo para a saúde humana e ambiental. É essencial a realização de estudos sobre os efeitos da exposição crônica e simultânea a diversos agrotóxicos, além de estudos sobre os nexos de determinação estrutural do uso dos venenos e suas consequências.
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11
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Vieira Santos VS, Caixeta ES, Campos Júnior EOD, Pereira BB. Ecotoxicological effects of larvicide used in the control of Aedes aegypti on nontarget organisms: Redefining the use of pyriproxyfen. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2017; 80:155-160. [PMID: 28095184 DOI: 10.1080/15287394.2016.1266721] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 11/27/2016] [Indexed: 06/06/2023]
Abstract
The continued widespread use of larvicides in Aedes aegypti control programs is still a necessary strategy, since there are no apparent efficient vaccines against arboviruses. However, chemical approaches may affect nontarget organisms and produce detrimental effects to environmental health. Therefore, the aim of this study was to conduct toxicity testing for pyriproxyfen at different concentrations using Daphnia magna and Artemia salina as model organisms to evaluate the ecotoxicological parameters. This study describes the toxicological effects of pyriproxyfen on both microcrustaceans, which are widely used in bioassays because of their sensitivity to changes in hydrosphere. Data demonstrated that the calculated EC50-48h value of pyriproxyfen was 2.5 μg/for D. magna and A. salina; the no-observed-effect concentration (NOEC) and the lowest-observed-effect concentration (LOEC) of pyriproxyfen were found to be 0.63 and 1.25 μg/L for Artemia salina and Daphnia magna, respectively. In chronic toxicity and reproduction tests on D. magna, a calculated CL50-7day (lethality on 50% of daphnids after 7 days of chronic test) and an EC50-21day (50% reduction in the reproductive output of parental daphnids after 21 days of exposure) higher than 1.25 μg/L pyriproxyfen were observed. The time of first reproduction was significantly increased in D. magna after exposure to environmentally relevant concentrations of pyriproxyfen, but other reproduction parameters were not markedly altered. Environmental risk assessment revealed that pyriproxyfen is highly toxic for both branchiopods. Data demonstrated that pyriproxyfen may produce adverse effects on the aquatic ecosystem at concentrations required to control Ae. aegypti.
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Affiliation(s)
- Vanessa Santana Vieira Santos
- a Department of Environmental Health , Laboratory of Environmental Health, Federal University of Uberlândia , Uberlândia , Minas Gerais , Brazil
- b Department of Biotechnology , Institute of Genetics and Biochemistry, Federal University of Uberlândia , Uberlândia , Minas Gerais , Brazil
| | - Evelyn Siqueira Caixeta
- a Department of Environmental Health , Laboratory of Environmental Health, Federal University of Uberlândia , Uberlândia , Minas Gerais , Brazil
| | - Edimar Olegário de Campos Júnior
- c Department of Genetics and Biochemistry , Laboratory of Cytogenetics and Mutagenesis, Federal University of Uberlândia , Uberlândia , Minas Gerais , Brazil
| | - Boscolli Barbosa Pereira
- a Department of Environmental Health , Laboratory of Environmental Health, Federal University of Uberlândia , Uberlândia , Minas Gerais , Brazil
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Caixeta ES, Silva CF, Santos VSV, Olegário de Campos Júnior E, Pereira BB. Ecotoxicological assessment of pyriproxyfen under environmentally realistic exposure conditions of integrated vector management for Aedes aegypti control in Brazil. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2016; 79:799-803. [PMID: 27458879 DOI: 10.1080/15287394.2016.1191400] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
There is increasing concern to control Aedes aegypti mosquito exposure in developing countries such as Brazil. Thus, integrated approaches using a combination of chemical, pyriproxyfen larvicide, and biological, Xiphophorus maculatus, larvivorous fish species approaches are necessary and important to initiate more effective control against mosquito borne diseases. This study describes the toxicological effects of pyriproxyfen larvicide on the fish Xiphophorus maculatus, the larvivorous fish species employed to destroy A. aegypti larvae mosquito species. The toxicological profile of pyriproxyfen was evaluated to determine compatible concentrations for the use of this chemical in conjunction with X. maculatus as an integrated approach against A. aegypti mosquito larvae. According to the behavioral responses of fish, the no-observed-effect concentration (NOEC) and lowest-observed-effect concentration (LOEC) of pyriproxyfen were determined to be 2.5 and 5 µg/L, respectively. Bioassays indicated that although pyriproxyfen was not lethal to X. maculatus, the application of this compound at a concentration reported to control the emergence of A. aegypti larvae may decrease the swimming performance of larvivorous fish and their ability to ingest A. aegypti L4 larvae. Data show that integration of biological larvivorous fish and chemical larvicides is more effective when the appropriate larvicide concentration is utilized.
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Affiliation(s)
- Evelyn Siqueira Caixeta
- a Department of Environmental Health, Laboratory of Environmental Health , Federal University of Uberlândia, Santa Mônica Campus , Uberlândia , Minas Gerais , Brazil
| | - Carolina Fabiano Silva
- a Department of Environmental Health, Laboratory of Environmental Health , Federal University of Uberlândia, Santa Mônica Campus , Uberlândia , Minas Gerais , Brazil
| | - Vanessa Santana Vieira Santos
- b Institute of Genetics and Biochemistry, Department of Biotechnology , Federal University of Uberlândia, Umuarama Campus , Uberlândia , Minas Gerais , Brazil
| | - Edimar Olegário de Campos Júnior
- c Department of Genetics and Biochemistry, Laboratory of Cytogenetics and Mutagenesis , Federal University of Uberlândia, Umuarama Campus , Uberlândia , Minas Gerais , Brazil
| | - Boscolli Barbosa Pereira
- a Department of Environmental Health, Laboratory of Environmental Health , Federal University of Uberlândia, Santa Mônica Campus , Uberlândia , Minas Gerais , Brazil
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Pereira BB, Caixeta ES, Freitas PC, Santos VSV, Limongi JE, de Campos Júnior EO, Campos CF, Souto HN, Rodrigues TS, Morelli S. Toxicological assessment of spinosad: Implications for integrated control of Aedes aegypti using larvicides and larvivorous fish. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2016; 79:477-481. [PMID: 27294296 DOI: 10.1080/15287394.2016.1176974] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Integration of larvivorous fish and biolarvicides at low concentrations to control of mosquito larvae in field situations may result in a safer and more effective tool. However, the usefulness of integrated approach depends upon survival and ecological fitness of fish employed. Thus, the aim of this study was to examine the genotoxic effects of combining different sublethal concentrations of spinosad, a naturally occurring neurotoxic insecticide, with male adult poecilid larvivorous guppy (Poecilia reticulata) and platy (Xiphophorus maculatus) fish on Aedes larvae mosquitos. Both fish species have been used for biological control of Aedes larvae in Brazil. Sublethal spinosad exposures were predetermined based on CL50-96hr. Nuclear abnormalities (NA) and micronucleus (MN) frequency in gill cells were measured after 14 d of exposure. Behavioral changes were monitored over 96 h. Although genotoxic effects were not markedly different from control, behavioral changes evaluated based upon the no-observable-effect concentration (NOEC) and lowest-observable-effect concentration (LOEC). Adverse effects were noted at concentrations of 12.6 mg/L (NOEC) and 25.3 mg/L (LOEC) spinosad. Therefore, these insecticide concentrations may be considered as being safe to these fish species and have important implications for integrated approach to control Aedes larvae using natural larvicides and larvivorous fish.
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Affiliation(s)
- Boscolli Barbosa Pereira
- a Department of Environmental Health , Laboratory of Environmental Health, Federal University of Uberlândia, Santa Mônica Campus , Uberlândia , Minas Gerais , Brazil
| | - Evelyn Siqueira Caixeta
- a Department of Environmental Health , Laboratory of Environmental Health, Federal University of Uberlândia, Santa Mônica Campus , Uberlândia , Minas Gerais , Brazil
| | - Priscila Costa Freitas
- b Institute of Genetics and Biochemistry, Department of Biotechnology , Federal University of Uberlândia, Umuarama Campus , Uberlândia , Minas Gerais , Brazil
| | - Vanessa Santana Vieira Santos
- b Institute of Genetics and Biochemistry, Department of Biotechnology , Federal University of Uberlândia, Umuarama Campus , Uberlândia , Minas Gerais , Brazil
| | - Jean Ezequiel Limongi
- c Department of Environmental Health , Laboratory of Epidemiolgy, Federal University of Uberlândia, Santa Mônica Campus , Uberlândia , Minas Gerais , Brazil
| | - Edimar Olegário de Campos Júnior
- d Department of Genetics and Biochemistry , Laboratory of Cytogenetics and Mutagenesis, Federal University of Uberlândia, Umuarama Campus , Uberlândia , Minas Gerais , Brazil
| | - Carlos Fernando Campos
- d Department of Genetics and Biochemistry , Laboratory of Cytogenetics and Mutagenesis, Federal University of Uberlândia, Umuarama Campus , Uberlândia , Minas Gerais , Brazil
| | - Henrique Nazareth Souto
- d Department of Genetics and Biochemistry , Laboratory of Cytogenetics and Mutagenesis, Federal University of Uberlândia, Umuarama Campus , Uberlândia , Minas Gerais , Brazil
| | - Tamiris Sabrina Rodrigues
- d Department of Genetics and Biochemistry , Laboratory of Cytogenetics and Mutagenesis, Federal University of Uberlândia, Umuarama Campus , Uberlândia , Minas Gerais , Brazil
| | - Sandra Morelli
- d Department of Genetics and Biochemistry , Laboratory of Cytogenetics and Mutagenesis, Federal University of Uberlândia, Umuarama Campus , Uberlândia , Minas Gerais , Brazil
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Pereira BB, de Campos Júnior EO. Enzymatic Alterations and Genotoxic Effects Produced by Sublethal Concentrations of Organophosphorous Temephos in Poecilia reticulata. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2015; 78:1033-1037. [PMID: 26252754 DOI: 10.1080/15287394.2015.1050566] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 05/08/2015] [Indexed: 06/04/2023]
Abstract
The responses of biochemical and genetic parameters were evaluated in tissues of Poecilia reticulata exposed to sublethal and environmentally relevant concentrations of 0.005, 0.01, or 0.02 mg/L of the organophosphorous (OP) pesticide temephos (TE) for 168 h. Activities of enzymes brain acetylcholinesterase (AChE) and liver carboxylesterase (CbE) were determined. Nuclear abnormalities (NA) and micronucleus (MN) frequency in gill erythrocytes were also measured. No mortality was observed over the experimental period; however, brain AChE activities were decreased significantly in guppies in all TE treatment groups after 72 h of exposure. Hepatic CbE activities of fish were increased in all TE treatment groups at 96, 120, and 144 h of exposure. The frequencies of MN and NA in fish gill erythrocytes displayed a marked rise after 168 h of exposure to concentrations of 0.01 or 0.02 mg/L TE. Thus, determination of these parameters may be employed as potential indices of exposure to TE using this sentinel organism for monitorining.
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Affiliation(s)
- Boscolli Barbosa Pereira
- a Department of Environmental Health, Laboratory of Environmental Health , Federal University of Uberlândia, Santa Mônica Campus , Uberlândia , Minas Gerais , Brazil
| | - Edimar Olegário de Campos Júnior
- b Department of Genetics and Biochemistry, Laboratory of Cytogenetics and Mutagenesis , Federal University of Uberlândia, Umuarama Campus , Uberlândia , Minas Gerais , Brazil
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