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Farder-Gomes CF, Miranda FR, Bernardes RC, Bastos DSS, Gomes DS, da Silva FP, Gonçalves PL, Arndt S, da Silva Xavier A, Zago HB, Serrão JE, Martins GF, de Oliveira LL, Fernandes KM. Exposure to the herbicide tebuthiuron affects behavior, enzymatic activity, morphology and physiology of the midgut of the stingless bee Partamona helleri. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2024; 110:104516. [PMID: 39032582 DOI: 10.1016/j.etap.2024.104516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 07/08/2024] [Accepted: 07/17/2024] [Indexed: 07/23/2024]
Abstract
Partamona helleri is an important pollinator in the Neotropics. However, this bee faces an increased risk of pesticide exposure, potentially affecting both individual bees and entire colonies. Thus, this study aimed to evaluate the effects of the herbicide tebuthiuron on behavior, antioxidant activity, midgut morphology, and signaling pathways related to cell death, cell proliferation and differentiation in P. helleri workers. tebuthiuron significantly reduced locomotor activity and induced morphological changes in the midgut. The activity of the detoxification enzymes superoxide dismutase and glutathione S-transferase increased after exposure, indicating a detoxification mechanism. Furthermore, the herbicide led to alterations in the number of positive cells for signaling-pathway proteins in the midgut of bees, suggesting induction of apoptotic cell death and disruption of midgut epithelial regeneration. Therefore, tebuthiuron may negatively impact the behavior, antioxidant activity, morphology, and physiology of P. helleri workers, potentially posing a threat to the survival of this non-target organism.
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Affiliation(s)
| | - Franciane Rosa Miranda
- Department of General Biology, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil.
| | | | - Daniel Silva Sena Bastos
- Department of General Biology, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil.
| | - Davy Soares Gomes
- Department of General Biology, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil.
| | - Fernanda Pereira da Silva
- Department of Agronomy, Universidade Federal do Espírito Santo - Campus Alegre, Alegre, Espírito Santo 29500-000, Brazil.
| | - Pollyana Leão Gonçalves
- Department of General Biology, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil.
| | - Stella Arndt
- Department of Agronomy, Universidade Federal do Espírito Santo - Campus Alegre, Alegre, Espírito Santo 29500-000, Brazil.
| | - André da Silva Xavier
- Department of Agronomy, Universidade Federal do Espírito Santo - Campus Alegre, Alegre, Espírito Santo 29500-000, Brazil.
| | - Hugo Bolsoni Zago
- Department of Agronomy, Universidade Federal do Espírito Santo - Campus Alegre, Alegre, Espírito Santo 29500-000, Brazil.
| | - José Eduardo Serrão
- Department of General Biology, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil.
| | - Gustavo Ferreira Martins
- Department of General Biology, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil.
| | | | - Kenner Morais Fernandes
- Department of Agronomy, Universidade Federal do Espírito Santo - Campus Alegre, Alegre, Espírito Santo 29500-000, Brazil.
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Sánchez-Yépez J, Acevedo-Huergo T, Mendoza-Trejo MS, Corona R, Hernández-Plata I, Viñuela-Berni V, Giordano M, Rodríguez VM. Early and transitory hypoactivity and olfactory alterations after chronic atrazine exposure in female Sprague-Dawley rats. Neurotoxicology 2024; 101:68-81. [PMID: 38340903 DOI: 10.1016/j.neuro.2024.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 01/19/2024] [Accepted: 01/31/2024] [Indexed: 02/12/2024]
Abstract
Several studies have shown that chronic exposure to the herbicide atrazine (ATR) causes alterations in locomotor activity and markers of the dopaminergic systems of male rats. However, few studies have evaluated the sex-dependent effects of atrazine exposure. The aim of the present study was to evaluate whether chronic ATR exposure causes alterations in behavioral performance and dopaminergic systems of female rats. At weaning, two groups of rats were exposed to 1 or 10 mg ATR/kg body weight daily thorough the food, while the control group received food without ATR for 14 months. Spontaneous locomotor activity was evaluated monthly for 12 months, while anxiety, egocentric and spatial memory, motor coordination, and olfactory function tasks were evaluated between 13 and 14 months of ATR exposure. Tyrosine hydroxylase (TH) and monoamine content in brain tissue were assessed at the end of ATR treatment. Female rats treated with 1 or 10 mg ATR showed vertical hypoactivity compared to the control group only in the first month of ATR exposure. Impairments in olfactory functions were found due to ATR exposure. Nevertheless, no alterations in anxiety, spatial and egocentric memory, or motor coordination tasks were observed, while the levels of TH and dopamine and its metabolites in brain tissue were similar among groups. These results suggest that female rats could present greater sensitivity to the neurotoxic effects of ATR on spontaneous locomotor activity in the early stages of development. However, they are unaffected by chronic ATR exposure later in life compared to male rats. More studies are necessary to unravel the sex-related differences observed after chronic ATR exposure.
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Affiliation(s)
- Jonathan Sánchez-Yépez
- Departamento de Neurobiología Conductual y Cognitiva, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, Mexico
| | - Triana Acevedo-Huergo
- Departamento de Neurobiología Conductual y Cognitiva, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, Mexico
| | - Maria Soledad Mendoza-Trejo
- Departamento de Neurobiología Conductual y Cognitiva, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, Mexico
| | - Rebeca Corona
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, Mexico
| | - Isela Hernández-Plata
- Departamento de Neurobiología Conductual y Cognitiva, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, Mexico
| | - Verónica Viñuela-Berni
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, Mexico
| | - Magda Giordano
- Departamento de Neurobiología Conductual y Cognitiva, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, Mexico
| | - Verónica M Rodríguez
- Departamento de Neurobiología Conductual y Cognitiva, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, Mexico.
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Loken LC, Corsi SR, Alvarez DA, Ankley GT, Baldwin AK, Blackwell BR, De Cicco LA, Nott MA, Oliver SK, Villeneuve DL. Prioritizing Pesticides of Potential Concern and Identifying Potential Mixture Effects in Great Lakes Tributaries Using Passive Samplers. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2023; 42:340-366. [PMID: 36165576 PMCID: PMC10107608 DOI: 10.1002/etc.5491] [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: 04/28/2022] [Revised: 06/06/2022] [Accepted: 09/22/2022] [Indexed: 05/24/2023]
Abstract
To help meet the objectives of the Great Lakes Restoration Initiative with regard to increasing knowledge about toxic substances, 223 pesticides and pesticide transformation products were monitored in 15 Great Lakes tributaries using polar organic chemical integrative samplers. A screening-level assessment of their potential for biological effects was conducted by computing toxicity quotients (TQs) for chemicals with available US Environmental Protection Agency (USEPA) Aquatic Life Benchmark values. In addition, exposure activity ratios (EAR) were calculated using information from the USEPA ToxCast database. Between 16 and 81 chemicals were detected per site, with 97 unique compounds detected overall, for which 64 could be assessed using TQs or EARs. Ten chemicals exceeded TQ or EAR levels of concern at two or more sites. Chemicals exceeding thresholds included seven herbicides (2,4-dichlorophenoxyacetic acid, diuron, metolachlor, acetochlor, atrazine, simazine, and sulfentrazone), a transformation product (deisopropylatrazine), and two insecticides (fipronil and imidacloprid). Watersheds draining agricultural and urban areas had more detections and higher concentrations of pesticides compared with other land uses. Chemical mixtures analysis for ToxCast assays associated with common modes of action defined by gene targets and adverse outcome pathways (AOP) indicated potential activity on biological pathways related to a range of cellular processes, including xenobiotic metabolism, extracellular signaling, endocrine function, and protection against oxidative stress. Use of gene ontology databases and the AOP knowledgebase within the R-package ToxMixtures highlighted the utility of ToxCast data for identifying and evaluating potential biological effects and adverse outcomes of chemicals and mixtures. Results have provided a list of high-priority chemicals for future monitoring and potential biological effects warranting further evaluation in laboratory and field environments. Environ Toxicol Chem 2023;42:340-366. Published 2022. This article is a U.S. Government work and is in the public domain in the USA. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
- Luke C. Loken
- US Geological SurveyUpper Midwest Water Science CenterMadisonWisconsinUSA
| | - Steven R. Corsi
- US Geological SurveyUpper Midwest Water Science CenterMadisonWisconsinUSA
| | - David A. Alvarez
- US Geological SurveyColumbia Environmental Research CenterColombiaMissouriUSA
| | - Gerald T. Ankley
- US Environmental Protection Agency, Center for Computational Toxicology and ExposureGreat Lakes Toxicology and Ecology DivisionDuluthMinnesotaUSA
| | | | - Brett R. Blackwell
- US Environmental Protection Agency, Center for Computational Toxicology and ExposureGreat Lakes Toxicology and Ecology DivisionDuluthMinnesotaUSA
| | - Laura A. De Cicco
- US Geological SurveyUpper Midwest Water Science CenterMadisonWisconsinUSA
| | - Michele A. Nott
- US Geological SurveyUpper Midwest Water Science CenterMadisonWisconsinUSA
| | - Samantha K. Oliver
- US Geological SurveyUpper Midwest Water Science CenterMadisonWisconsinUSA
| | - Daniel L. Villeneuve
- US Environmental Protection Agency, Center for Computational Toxicology and ExposureGreat Lakes Toxicology and Ecology DivisionDuluthMinnesotaUSA
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Predicting the Habitat Suitability and Distribution of Two Species of Mound-Building Termites in Nigeria Using Bioclimatic and Vegetation Variables. DIVERSITY 2023. [DOI: 10.3390/d15020157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Temperature is an important factor determining the abundance, distribution and diversity of termite species. Thus, termites are affected by changing climate and have to adopt different means of surviving in order to avoid extinction. Using termite occurrence data, bioclimatic variables and vegetation cover, we modelled and predicted the current and future habitat suitability for mound-building termites in Nigeria. Of the 19 bioclimatic variables and the vegetation index (NDVI) tested, only six were significant and eligible as predictors of habitat suitability for the mound-building termites Macrotermes subhyalinus and M. bellicosus. Under current climatic conditions (2022), the northwest, northeast and central regions are highly suitable for M. subhyalinus, while the distribution of M. bellicosus decreased in the North West, North East and in the Central region. However, regarding habitat suitability for the future (2050), there was a predicted range expansion into suitable areas for the two termite species. The increase in temperature due to global warming has an effect which can either result in migration or sometimes extinction of termite species within an ecosystem. Here, we have predicted habitat suitability for the two mound-building termite species under current and future climatic scenarios, and how the change in climatic variables would lead to an expansion in their range across Nigeria.
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Araújo RDS, Bernardes RC, Martins GF. A mixture containing the herbicides Mesotrione and Atrazine imposes toxicological risks on workers of Partamona helleri. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 763:142980. [PMID: 33121769 DOI: 10.1016/j.scitotenv.2020.142980] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 09/30/2020] [Accepted: 10/04/2020] [Indexed: 06/11/2023]
Abstract
A mixture of Mesotrione and Atrazine (Calaris®) has been reported as an improvement of the atrazine herbicides, which are agrochemicals used for weed control. However, its possible harmful effects on non-target organisms, including pollinators, needs to be better understood. In this work, the effects of the mix of herbicides on food consumption, behaviour (walking distance, and meandering), and the morphology of the midgut of the stingless bee Partamona helleri were studied. Foragers were orally exposed to different concentrations of the mix. The concentrations leading to 10% and 50% mortality (LC10 and LC50, respectively) were estimated and used in the analysis of behaviour and morphology. The ingestion of contaminated diets (50% aqueous sucrose solution + mix) led to a reduction in food consumption by the bees when compared to the control, bees fed a non-contaminated diet (sucrose solution). Ingestion of the LC50 diet reduced locomotor activity, increased meandering, induced the degradation of the epithelium and peritrophic matrix, and also changed the number of cells positive for signalling-pathway proteins in the midgut. These results show the potential toxicological effects and environmental impacts of the mix of herbicides in beneficial insects, including a native bee.
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Thiel NA, Sachett A, Schneider SE, Garbinato C, Decui L, Eichwald T, Conterato GMM, Latini A, Piato A, Siebel AM. Exposure to the herbicide 2,4-dichlorophenoxyacetic acid impairs mitochondrial function, oxidative status, and behavior in adult zebrafish. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:45874-45882. [PMID: 32803608 DOI: 10.1007/s11356-020-10497-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 08/12/2020] [Indexed: 06/11/2023]
Abstract
2,4-Dichlorophenoxyacetic acid (2,4-D) is one of the most commonly used herbicides worldwide. While the effects of 2,4-D in target organisms are well known, its consequences in nontarget organisms are not fully explained. Therefore, the purpose of this study was to investigate the effects of the herbicide on mitochondrial energy metabolism, oxidative status, and exploratory behavior in adult zebrafish. Animal exposure to 2,4-D increased cytochrome c oxidase and catalase activities and reduced SOD/CAT ratio, moreover, increased the total distance traveled and the number of crossings. Finally, animals exposed to 2,4-D spent more time in the upper zone of the tank and traveled a long distance in the upper zone. Overall, our results indicate the 2,4-D can provoke disabling effects in nontarget organisms. The obtained data showed that exposure to 2,4-D at environmentally relevant concentrations alters mitochondrial metabolism and antioxidant status and disturbs the zebrafish innate behavior.
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Affiliation(s)
- Nathana Andressa Thiel
- Laboratório de Genética e Ecotoxicologia Molecular, Programa de Pós-Graduação em Ciências Ambientais, Universidade Comunitária da Região de Chapecó, Servidão Anjo da Guarda, 295-D, Efapi, Chapecó, SC, 89809-900, Brazil
| | - Adrieli Sachett
- Laboratório de Psicofarmacologia e Comportamento, Programa de Pós-Graduação em Neurociências, Universidade Federal do Rio Grande do Sul, Sarmento Leite, 500, Centro Histórico, Porto Alegre, RS, 90050-170, Brazil
| | - Sabrina Ester Schneider
- Laboratório de Genética e Ecotoxicologia Molecular, Curso de Ciências Biológicas, Universidade Comunitária da Região de Chapecó, Servidão Anjo da Guarda, 295-D, Efapi, Chapecó, SC, 89809-900, Brazil
| | - Cristiane Garbinato
- Laboratório de Genética e Ecotoxicologia Molecular, Programa de Pós-Graduação em Ciências Ambientais, Universidade Comunitária da Região de Chapecó, Servidão Anjo da Guarda, 295-D, Efapi, Chapecó, SC, 89809-900, Brazil
| | - Laura Decui
- Laboratório de Genética e Ecotoxicologia Molecular, Curso de Ciências Biológicas, Universidade Comunitária da Região de Chapecó, Servidão Anjo da Guarda, 295-D, Efapi, Chapecó, SC, 89809-900, Brazil
| | - Tuany Eichwald
- Laboratório de Bioenergética e Estresse Oxidativo, Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Universitário Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Greicy M M Conterato
- Laboratório de Fisiologia da Reprodução Animal, Departamento de Agricultura, Biodiversidade e Floresta, Universidade Federal de Santa Catarina, Campus de Curitibanos, Rodovia Ulysses Gaboardi, Curitibanos, SC, 89520-000, Brazil
| | - Alexandra Latini
- Laboratório de Bioenergética e Estresse Oxidativo, Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Universitário Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Angelo Piato
- Laboratório de Psicofarmacologia e Comportamento, Programa de Pós-Graduação em Neurociências, Universidade Federal do Rio Grande do Sul, Sarmento Leite, 500, Centro Histórico, Porto Alegre, RS, 90050-170, Brazil
| | - Anna Maria Siebel
- Laboratório de Genética e Ecotoxicologia Molecular, Programa de Pós-Graduação em Ciências Ambientais, Universidade Comunitária da Região de Chapecó, Servidão Anjo da Guarda, 295-D, Efapi, Chapecó, SC, 89809-900, Brazil.
- Laboratório de Genética e Ecotoxicologia Molecular, Curso de Ciências Biológicas, Universidade Comunitária da Região de Chapecó, Servidão Anjo da Guarda, 295-D, Efapi, Chapecó, SC, 89809-900, Brazil.
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