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Dissertations / Theses on the topic 'Glyphosate toxicity'

Author: Grafiati

Published: 5 June 2025

Last updated: 15 July 2025

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1

Haughton, Alison Julie. "Impact of glyphosate drift on non-target field margin invertebrates." Thesis, Open University, 2000. http://oro.open.ac.uk/58056/.

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Grassy arable field margins provide important permanent habitats for arthropods in agroecosystems and due to their proximity to high input areas, are exposed to pesticide drift. The aims of this thesis are to determine the likely effects of glyphosate drift in arable field margins by examining patterns of a medium quality spray drift intercepted by plant species in buffer strips and the effects of glyphosate on non-target field margin arthropods. Levels of mediumquality spray drift, analogous to herbicide drift, intercepted by field margin plant species in field boundaries were significantly r

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2

Winnick, Blake Edward. "The Effects of Glyphosate Based Herbicides on Chick Embryo Development." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc500146/.

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Glyphosate based herbicides are among the most widely used herbicides in the world. The purpose of this study was to determine developmental toxicity of glyphosate, the active ingredient in the common herbicide Roundup, on developing chicken embryos. Few studies have examined toxic effects of glyphosate alone versus the full compound formulations of Roundup, which include adjuvants and surfactants. Adjutants and surfactants are added to aid in solubility and absorption of glyphosate. In this study chicken embryos were exposed at the air cell on embryonic day 6 to 19.8 or 9.9 mg / Kg egg ma

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3

Manservisi, Fabiana <1981&gt. "Reproductive and developmental toxicity study using Sprague-Dawley rats exposed under various calendars to the weedkiller Glyphosate and commercial formulations Glyphosate-based." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amsdottorato.unibo.it/9579/1/Manservisi_Fabiana_tesi.pdf.

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Glyphosate-based herbicides (GBHs) are the most globally used herbicides raising the risk of environmental exposition. Carcinogenic effects are only one component of the multiple adverse health effects of Glyphosate and GBHs that have been reported. Questions related to hazards and corresponding risks identified in relation to endocrine disrupting effects are rising. The present study investigated the possible reproductive/developmental toxicity of GBHs administered to male and female Sprague-Dawley rats under various calendar of treatment. Assessments included maternal and reproductive outcom

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4

Zalizniak, Liliana, and liliana zalizniak@rmit edu au. "The effects of selected agricultural chemicals on freshwater microalgae and cladocerans in laboratory studies, with particular emphasis on hormesis." RMIT University. Applied Sciences, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080618.091930.

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This thesis examines the toxicity of the herbicide glyphosate (two formulations ¡V technical grade and Roundup Biactive RB) and the insecticide chlorpyrifos CPF to a model freshwater food chain of a producer and consumer. The importance of studying the toxicity of low (environmentally realistic) concentrations of pesticides to non-target organisms is highlighted. An extensive literature review on the toxicity of glyphosate and chlorpyrifos to aquatic organisms is provided. The requirements for the maintenance of algal (Chlorella vulgaris, Chlorella pyrenoidosa and Pseudokirchneriella subcapita

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5

Gravena, Renan. "Respostas bioquímicas e fisiológicas de plantas de citros atingidas pelo glyphosate." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/11/11136/tde-24082006-153348/.

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O objetivo deste trabalho foi investigar o comportamento fisiológico e bioquímico de plantas de citros (Citrus spp.) submetidas à aplicação do herbicida glyphosate. Para tanto, foram realizados quatro estudos. No primeiro, avaliou-se o efeito de glyphosate (doses entre 0 e 720 g e.a.ha-1, aplicadas sobre a parte aérea das plantas) nas concentrações foliares de chiquimato, aminoácidos livres totais e fenóis e na fotossíntese de plantas de citros em condições controladas. Foram testadas mudas de limão Cravo (Citrus limonia L. Osbeck), com 4 meses de idade, e mudas de Valência (Citrus sinensi

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6

Medeiros, Gessica Hashimoto de. "Respostas fisiológicas e morfológicas de mudas de landi (Calophyllum brasiliense cambess) a diferentes doses de glyphosate." Universidade Federal do Tocantins, 2017. http://hdl.handle.net/11612/446.

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As plantas daninhas se tornaram indesejáveis em áreas de plantio comercial florestal por competir por água, luz e nutrientes com as espécies florestais causando prejuízos, devido a isso devem ser controladas. Geralmente as áreas de empresas de plantio florestal são muito vastas, assim, o método de controle de plantas invasoras mais eficaz é o químico. O glyphosate é o herbicida mais utilizado para o controle de plantas daninhas devido ao fato de ser não-seletivo, possuir ação sistêmica, largo espectro de ação e custo relativamente baixo. Porém se não for aplicado de forma correta o prod

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7

Benetti, Fernanda. "Avaliação cromatográfica e estudos de sorção e de toxicidade em minhocas de deltametrina, glifosato e ácido aminometilfosfônico." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/75/75135/tde-18022016-143759/.

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No Brasil é sabido que o uso de insumos agrícolas para o melhoramento da produtividade é crescente. Dentre esses insumos, pode-se destacar o uso de pesticidas. Neste trabalho foi desenvolvida e validada metodologia para análise de deltametrina (um piretróide usado como inseticida) por CLAE/UV. Nessas amostras também foram avaliadas a presença de glifosato (uma glicina substituída usada como herbicida) e de seu metabólito, o AMPA, via CG/EM. Essas metodologias foram aplicadas para análise de amostras reais de água, solo e sedimento no município de São Carlos, a fim de avaliar a contaminação por

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8

Rodrigues, Laís de Brito. "Efeitos ecotoxicológicos do glifosato e formulações em diferentes organismos." Universidade Federal de Goiás, 2016. http://repositorio.bc.ufg.br/tede/handle/tede/6825.

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Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2017-02-06T14:01:10Z No. of bitstreams: 2 Dissertação - Laís de Brito Rodrigues - 2016.pdf: 1513682 bytes, checksum: f083fb3e5a8cc62aa1d67ed3d78fbfe1 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2017-02-06T14:01:33Z (GMT) No. of bitstreams: 2 Dissertação - Laís de Brito Rodrigues - 2016.pdf: 1513682 bytes, checksum: f083fb3e5a8cc62aa1d67ed3d78fbfe1 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Made

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Venzke, Janaína Guimarães. "Respostas biológica, sistêmica e reprodutiva de ratos Wistar alimentados com soja geneticamente modificada resistente ao glifosato." Universidade Federal de Pelotas, 2009. http://guaiaca.ufpel.edu.br/handle/123456789/1266.

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Made available in DSpace on 2014-08-20T13:32:54Z (GMT). No. of bitstreams: 1 tese_janaina_guimaraes_venzke.pdf: 370814 bytes, checksum: ca6312b2d70800b452ae33ccea99bab6 (MD5) Previous issue date: 2009-02-26<br>The most cultivated genetically modified plant in Brazil is the soybean [Glycine max (L.) Merr.] resistant to the systemic herbicide glyphosate. There are 12.3 millions of cultivated hectares. This soybean was obtained through the introduction of the gene that codes for the 5-enolpyruyilshikimic-acid3-phosphate synthase enzyme, (EPSPS, E.C 2.5.1.19, CP4), of the shikimic pathway,

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10

Mann, Reinier Matthew. "Toxicological Impact of Agricultural Surfactants on Australian Frogs." Thesis, Curtin University, 2000. http://hdl.handle.net/20.500.11937/522.

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Surfactants are one of the more ubiquitous contaminants in aquatic systems. Their importance as toxic components of pesticide formulations has, however, been largely overlooked. Amphibians particularly, as inhabitants of shallow, temporary and often lentic aquatic environments may be at risk from exposure to these chemicals when they enter aquatic systems. This thesis presents data on the toxicity of surfactants to amphibians. Several experimental exposures were conducted with embryo-larval, tadpole and adult developmental stages of the Australian species- Crinia insignifera, Helcioporus eyrei

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11

Gress, Steeve. "Toxicités cardiaques et gonadique d'un herbicide à base de glyphosate chez des mammifères." Caen, 2014. http://www.theses.fr/2014CAEN2053.

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12

Almasri, Hanine. "Toxicologie des mélanges de pesticides chez des abeilles exposées à un agent pathogène : action combinée de l'agent pathogène Nosema ceranae, de l'insecticide imidaclopride, du fongicide difénoconazole et de l'herbicide glyphosate Mixtures of an insecticide, a fungicide and a herbicide induce high toxicities and systemic physiological disturbances in winter Apis mellifera honey bees Toxicity of the pesticides imidacloprid, difenoconazole and glyphosate alone and in binary and ternary mixtures to winter honey bees: effects on survival and antioxidative defenses Toxicological status changes the susceptibility of the honey bee Apis mellifera to a single fungicidal spray application Physiological effects of the interaction between Nosema ceranae and sequential and overlapping exposure to glyphosate and difenoconazole in the honey bee Apis mellifera." Thesis, Avignon, 2020. http://www.theses.fr/2020AVIG0722.

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Les données scientifiques actuelles suggèrent un déclin de la diversité et de l’abondance des insectes, y compris les abeilles domestiques Apis mellifera. Ces dernières sont confrontées à de fortes pertes de colonies dans plusieurs régions du monde telles que l’ouest de l’Europe et les États-Unis. De nombreuses études suggèrent que l’origine du déclin des colonies d’abeilles est multicausale et identifient les pesticides et les agents pathogènes comme étant les principaux contributeurs à ce déclin. La co-exposition des abeilles à de multiples pesticides et l’infection par plusieurs pathogènes

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13

Mann, Reinier Matthew. "Toxicological Impact of Agricultural Surfactants on Australian Frogs." Curtin University of Technology, School of Environmental Biology, 2000. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=14006.

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Surfactants are one of the more ubiquitous contaminants in aquatic systems. Their importance as toxic components of pesticide formulations has, however, been largely overlooked. Amphibians particularly, as inhabitants of shallow, temporary and often lentic aquatic environments may be at risk from exposure to these chemicals when they enter aquatic systems. This thesis presents data on the toxicity of surfactants to amphibians. Several experimental exposures were conducted with embryo-larval, tadpole and adult developmental stages of the Australian species- Crinia insignifera, Helcioporus eyrei

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14

Roustan, Audrey. "Génotoxicité du glyphosate, de l'atrazine et de leurs produits de dégradation seuls et en mélanges : étude de l'effet protecteur d'un cocktail de plantes." Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM5066.

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Le glyphosate, l’atrazine, et leurs principaux produits de dégradation (la déséthyl-atrazine ou DEA, et l’amino methyl phosphoric acid ou AMPA) sont parmi les pesticides les plus utilisés dans le monde et en France. Ils sont retrouvés en grande quantité dans plusieurs matrices environnementales dans les denrées alimentaires et les eaux de boisson.L’objectif de notre travail a été d’évaluer le potentiel génotoxique et mutagène in vitro et in vivo de ces quatre pesticides seuls et en mélanges, puis d’étudier les effets protecteurs d’un mélange d’extrait de plantes anti-mutagènes (Berberis vulgar

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15

Defarge, Nicolas. "Toxicité et perturbation endocrine de pesticides et de leurs adjuvants, et d’un maïs OGM tolérant le Roundup." Caen, 2015. http://www.theses.fr/2015CAEN2072.

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Les formulations de pesticides sont des mélanges contenant des adjuvants appelés diluants inertes et un principe déclaré comme actif. Les herbicides à base de glyphosate, dont le Roundup, sont les pesticides les plus utilisés au monde. La revue de la littérature scientifique montre leur toxicité sur la santé et la reproduction des mammifères en dessous des seuils réglementaires. Les effets à long terme du Roundup ni d’aucun OGM le tolérant (80% des OGM) n’avaient jamais été évalués avant notre étude de 2 ans sur le rat, révélant une incidence accrue des tumeurs mammaires et des déficiences rén

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16

Gasnier, Céline. "Mécanisme d'intoxication de cellules de mammifères par des herbicides à base de glyphosate et détoxification : Thèse sur un ensemble de travaux." Caen, 2009. http://www.theses.fr/2009CAEN2026.

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Les polluants, dont les xénobiotiques, sont très présents dans l’environnement et les organismes vivants ; ils perturbent en particulier les fonctions de reproduction. Métabolisés et détoxifiés en grande partie par le foie, les mécanismes d’intoxication et de détoxification sont ici détaillés en introduction, explicitant le rôle des gènes nouvellement impliqués. Notre principal exemple expérimental étudie les herbicides à base de glyphosate (Roundup) sur des cellules humaines, car ils sont les herbicides les plus utilisés dans le monde. Leurs résidus (glyphosate, AMPA) sont des contaminants ma

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17

Bénachour, Nora. "Effets du roundup et de divers xénobiotiques sur des cellules du cordon ombilical, embryonnaires et placentaires humaines : études de toxicité et de la perturbation endocrine de l'aromatase." Caen, 2008. http://www.theses.fr/2008CAEN2029.

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De nombreux xénobiotiques ont été décrits comme perturbateurs endocriniens (PE). Leur impact se manifeste sur les récepteurs des stéroïdes et les protéines de transport mais aussi, au niveau le moins étudié qui fera l’objet de cette thèse, sur la perturbation des enzymes du métabolisme des stéroïdes, comme l’aromatase. Appartenant à la superfamille des cytochromes P450 connus pour métaboliser ces xénobiotiques et maintenant la balance estrogéno-androgénique, l’aromatase représente une cible potentielle et un modèle intéressant. Nous avons démontré le mode d’action de certains pesticides fongic

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18

Weeks, Santos Shannon. "Étude des réponses adaptatives et délétères des premiers stades du développement de truite arc-en-ciel, Oncorhynchus mykiss, exposés à des produits phytosanitaires utilisés en viticulture." Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0003.

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L’utilisation excessive de pesticides engendre des pollutions et des dégradations importantes de l’environnement y compris sur les écosystèmes aquatiques. L’activité viticole ne fait pas exception à cette règle, et c’est pour cette raison que ce travail de thèse s’est intéressé aux réponses adaptatives ou délétères aux premiers stades de vie de poissons exposés à trois produits phytosanitaires utilisés en viticulture ainsi qu’à leur mélange et à des échantillons environnementaux. La thèse s’intéresse aux stades précoces de développement de la truite arc-en-ciel, mais également à la lignée cell

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19

"Aquatic toxicity and environmental fate of glyphosate-based herbicides." 2002. http://library.cuhk.edu.hk/record=b5896010.

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by Tsui Tsz Ki, Martin.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2002.<br>Includes bibliographical references (leaves 119-138).<br>Abstracts in English and Chinese.<br>Acknowledgements --- p.I<br>Abstract --- p.III<br>Table of Contents --- p.VII<br>List of Tables --- p.XII<br>List of Figures --- p.XIV<br>Abbreviations --- p.XVI<br>Chapter Chapter 1 --- General Introduction<br>Chapter 1.1 --- Research Background --- p.1<br>Chapter 1.1.1 --- General description of glyphosate --- p.1<br>Chapter 1.1.2 --- Physical and chemical properties of glyphosate --- p.2<br>Chapter 1.1.3

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20

Soares, Cristiano Fortuna. "Mitigating glyphosate effects on crop plants and soil functions - strategies to minimize its potential toxicity." Doctoral thesis, 2022. https://hdl.handle.net/10216/140109.

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21

Su, Samuel Shinn-Yuan, and 蘇信元. "Effects of Glyphosate and Edifenphos on Acute Toxicity of Perionyx excavatus, Metaphire posthuma, and Eisenia fetida." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/27090474739539852792.

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碩士<br>國立高雄師範大學<br>生物科技系<br>99<br>Acute toxic effects of a herbicide and a fungicide, glyphosate and edifenphos to three species earthworms (Perionyx excavates, Metaphire posthuma and Eisenia fetida) were evaluated by using OECD (Organisation for Economic Co-operation and Development) filter paper contact test methods. Mortality and abnormal morphology of earthworms exposed to different concentrations of glyphosate and edifenphos were examined. Glyphosate and edifenphos were toxic to three earthworm species and the severity of response increased with increasing pesticides concentrations. Morpho

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22

Soares, Diogo Alexandre Fernandes. "Relatório de estágio e monografia intitulada "Ocorrência de glifosato em alimentos"." Master's thesis, 2020. http://hdl.handle.net/10316/93025.

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Relatório de Estágio do Mestrado Integrado em Ciências Farmacêuticas apresentado à Faculdade de Farmácia<br>Glyphosate is a systemic, broad spectrum and post-emergent herbicide. The use of glyphosate has grown on the last decades and currently it is the most used herbicide worldwide.The rise of glyphosate consumption over the years brought also an increased concern about its possible toxicity and consequences for the human health. Therefore in recent years, diverse studies have been performed to evaluate the effects of glyphosate in human health. However, a scientific community consensus does

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23

Ferreira, Catarina Raquel Santos. "Biomonitorização de glifosato em urina de crianças em diversas regiões de Portugal Continental." Master's thesis, 2020. http://hdl.handle.net/10316/93055.

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Dissertação de Mestrado em Segurança Alimentar apresentada à Faculdade de Farmácia<br>A utilização de glifosato tem vindo a aumentar ao longo dos anos, tornando-se num dos herbicidas mais consumidos do mundo. Os seus efeitos no organismo humano e no meio ambiente têm sido analisados e mostram-se preocupantes, à medida que a exposição ao herbicida aumenta. O objetivo do presente estudo foi determinar glifosato em urina de crianças de diversas regiões de Portugal, incluindo zonas urbanas e rurais, para identificar níveis de exposição e a relacionar com os padrões alimentares.Das 41 crianças part

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