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Acute Toxicity of Herbicides and Sensibility of Aquatic Plant Wolffia brasiliensis as a Bioindicator Organism Planta Daninha
PEREIRA,P.C.; BRUNETTI,I.A.; CASTRO,K.S.; CHIAROTTI,L.F.; SANTOS,B.E.; MORAES,J.C.; CRUZ,C..
ABSTRACT: This study aimed to establish the mass cultivation of Wolffia brasiliensis under laboratory conditions, determine the sensitivity of reference substances (potassium dichromate, sodium chloride, and potassium chloride), and estimate the acute toxicity (LC50;7d) for the herbicide glyphosate, diquat, paraquat, imazapyr, 2,4-D, saflufenacil, imazamox, penoxsulam, metsulfuron-methyl, and atrazine. Three media were tested for culture establishment: Hoagland’s medium, 5.0 g L-1 NPK fertilizer (20-5-20), a mixture of Oxisol + organic substrate of decaying aquatic plant (2:1; v v-1). Sensitivity tests with reference substances and acute toxicity for herbicides were carried out after establishing the cultivation. The species W. brasiliensis presented an...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Macrophytes; Chemicals; Ecotoxicology; Reference substances; Pesticides.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100289
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Artificial tritrophic exposure system for environmental risk analysis on aphidophagous predators Anais da ABC (AABC)
PAULA,DÉBORA P.; SOUZA,LUCAS M. DE; ANDOW,DAVID A.; SOUSA,ALEX A.T. CORTÊS DE; PIRES,CARMEN S.S.; SUJII,EDISON R..
ABSTRACT We evaluated an artificial tritrophic exposure system for use in ecotoxicological evaluations of environmental stressors on aphidophagous predators. It consists of an acrylic tube with a Parafilm M sachet containing liquid aphid diet, into which can be added environmental stressors. Immature Cycloneda sanguinea, Harmonia axyridis and Chrysoperla externa, and adult H. axyridis were reared on Myzus persicae. Larval and pupal development and survival of all species and reproductive parameters of H. axyridis were similar to published results. The system provides a suitable tritrophic exposure route, enables ex-ante evaluation of stressors, and improves the accuracy of the assessment.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Beneficial insects; Biosafety; Ecotoxicology; Exposure routes.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000401569
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Avaliação toxicopatológica de biopesticidas em roedores: revisão dos ensaios da fase 1. Infoteca-e
CASTRO, V. L. S. S. de.
O propósito do presente trabalho é apresentar alguns cuidados a serem tomados durante a condução de testes toxicológicos para biopesticidas cujos organismos sejam bactérias ou fungos, como também apresentar sugestões quanto ao aprimoramento metodológico dos mesmos. Nesta publicação, portanto, são apresentados aspectos relativos ao controle de qualidade laboratorial e à avaliação do método usado para plaqueamento e crescimento dos AMC ? fungos e bactérias, com base na experiência do Laboratório de Ecotoxicologia e Biossegurança da Embrapa Meio Ambiente. Além disso, são tecidas considerações quanto ao significado da persistência do AMC no organismo animal.
Tipo: Documentos (INFOTECA-E) Palavras-chave: Biopesticidas; Testes toxicológicos.; Toxicologia; Análise de laboratório; Fungo para controle biológico; Cobaia; Análise de Risco.; Biopesticides; Ecotoxicology; Animal tests.
Ano: 2012 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/936006
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Cadmium and Lead content in Liver and Kidney tissues of Wild Turkey Vulture Cathartes aura (Linneo, 1758) from Chañaral, Atacama desert, Chile Gayana
Valladares F,Pablo; Alvarado,Sergio; Urra R,Carolina; Abarca,Jorge; Inostroza,Jorge; Codoceo,Juana; Ruz,Manuel.
The Atacama region, Chile, presents one of the highest levels of mining exploitation of the country, which leads to high levels of contamination from mine tailings and other related environmental liabilities. One of the most complex situations occurred in the Chañaral city, north of Chile, where for over 50 years mine tailings were dumped on the coast, causing severe damage in the ecosystem. To evaluate the effects on terrestrial biota, we analyzed the concentration of cadmium and lead in tissues of Turkey Vulture (Cathartes aura). The results indicate that accumulation of cadmium in kidney was 10.31 μg/g (SD 8.00, range 0.27 to 20.73 μg/g) while in the liver was 5.24 μg/g (SD 8.00, range 0.49 to 19.70). There values are very...
Tipo: Journal article Palavras-chave: Ecotoxicology; Heavy Metals; Cathartes aura.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382013000200004
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Chronic toxicity bioassay with populations of the crustacean Artemia salina exposed to the organophosphate diazinon Biol. Res.
Bustos-Obregon,Eduardo; Vargas,Álvaro.
A chronic toxicity bioassay was conducted with the microcrustacean Artemia salina as the testing organism for the toxic organophosphate diazinon in order to determine if the species is an appropriate indicator of pollution in aquatic environments. Tests of animal exposure to different concentrations of the toxicant were performed for 24, 48 and 72 hours after larvae hatching. Registered mortality data was used to obtain the lethal dose 50 (LD50) of the organophosphate for each exposure time, considering the immobilization of A. salina larvae as the mortality parameter. The lethal concentration (LD50) in the same exposure times was calculated by evaluating morphological changes on the three initial stages of larval development. Both doses were determined by...
Tipo: Journal article Palavras-chave: Diazinon; Artemia salina; Ecotoxicology; Bioassay.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000300013
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Clinical, biochemical and haemathological effects in Rhamdia quelen exposed to cypermethrin Arq. Bras. Med. Vet. Zootec.
Montanha,F.P.; Fredianelli,A.C.; Wagner,R.; Sacco,S.R.; Rocha,D.C.C.; Pimpão,C.T..
The acute intoxication of Cypermethrin in Silver Catfish (Rhamdia quelen) was evaluated. Animals weighing 56.67±4.43g and measuring 18.92±1.16cm were exposed to sublethal concentrations of Cypermethrin for the species in hydrological conditions during 96 hours. A total of 52 fish divided into three groups were used and received the following concentrations of Cypermethrin: 0 (n=12); 1.5 (n=20) and 2.5 (n=20)mg/L. The intoxicated animals suffered behavioral changes such as loss of balance, swimming alteration, dyspnea, upright swimming and sudden spiral swimming movements. As soon as the 96-hour period was over, a blood collection for hematological and biochemical analyses was performed. A complete haemogram test, plasmatic protein test, albumin, alanine...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish; Biomarkers; Ecotoxicology; Haemogram; Pyrethroids.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000300697
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Comparison between four and seven-day Ceriodaphnia dubia survival and reproduction test protocols using oil refinery effluent samples BABT
Oliveira-Filho,Eduardo Cyrino; Da-Matta,Anndressa Camillo; Cabral,Lucianna Lopes; Veiga,Letícia Falcão; Paumgartten,Francisco José Roma.
The aim of this study was to compare the 7-day Ceriodaphnia dubia survival and reproduction test with a 4 day test to evaluate the toxicity of oil refinery effluents. Both shown identical NOECs with three of 6 tested samples. With one of the tested samples, the 4-day NOEC was one tested-concentration lower, and with the remaining two samples, it was one tested-concentration higher than those obtained using the 7-day protocol. Then results suggested that 4 and 7-day protocols were comparable to detect toxic effects.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquatic toxicology; Water pollution; Ecotoxicology; Oil refinery effluents; Reproduction; Aquatic chronic tests.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000100017
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Comparison of nuclear abnormalities in Astyanax bifasciatus Cuvier, 1819 (Teleostei: Characidae) of two sections of rivers from the middle Iguaçu Biological Sciences
Melo-Silva, Merieli; Oliveira, Felipe Rafael; Rosa, Jonathan; Gemelli, Emanuelli; Santos, Lilian; Bueno-Krawczyk, Ana Carolina de Deus.
Most changes in water bodies are result of human activities that have the potential to undermine the environmental integrity of aquatic ecosystems. Changes in genetic material can be evidenced by the frequency of nuclear abnormalities in fish blood cells, in response to genotoxic agents even at low concentrations. Thus, we aimed at comparing the frequencies of nuclear abnormalities of fish kept in acclimation, with fish collected in Timbó river (Santa Cruz do Timbó, Santa Catarina State), under low anthropogenic interference, and fish collected in Iguaçu river (União da Vitória, Paraná State), a polluted river. The highest frequency of changes in nuclear morphology of fish erythrocytes was found in the urbanized area around the Iguaçu river, while, the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Micronucleus; Ecotoxicology; Mutagenesis; Pollution. Mutagênese.
Ano: 2018 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/40669
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De novo transcriptome assembly, functional annotation and differential gene expression analysis of juvenile and adult E. fetida, a model oligochaete used in ecotoxicological studies Biol. Res.
Thunders,Michelle; Cavanagh,Jo; Li,Yinsheng.
Abstract Background Earthworms are sensitive to toxic chemicals present in the soil and so are useful indicator organisms for soil health. Eisenia fetida are commonly used in ecotoxicological studies; therefore the assembly of a baseline transcriptome is important for subsequent analyses exploring the impact of toxin exposure on genome wide gene expression. Results This paper reports on the de novo transcriptome assembly of E. fetida using Trinity, a freely available software tool. Trinotate was used to carry out functional annotation of the Trinity generated transcriptome file and the transdecoder generated peptide sequence file along with BLASTX, BLASTP and HMMER searches and were loaded into a Sqlite3 database. To identify differentially expressed...
Tipo: Journal article Palavras-chave: Earthworm; Trinity; Transcriptome; E. fetida; Ecotoxicology; RNA; Sequence; Gene expression.
Ano: 2017 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100401
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DEB2009 Symposium : Dynamic Energy Budget, 30 years of research for metabolic organization, Book of abstracts ArchiMer
We are pleased to welcome you to at the first Symposium on Metabolic organization in Brest, 19-22 April, 2009. This conference is being organized jointly by Ifremer (French Institute for the Research and Exploitation of the Sea), the Department of Theoretical Biology at Vrije Universiteit Amsterdam, the Universities of Brest (UBO), Marseille (LMGEM-UMR CNRS 6117), Caen (UMRPE2M, LBBM) and Lisbon (Instituto Superior Técnico), the IRD (French Research Institute for Development), the INRA (French National Institute for Agricultural Research), the NIOZ (RoyalNetherlands Institute for Sea Research), the IMARES Wageningen (Institute for Marine Resources and Ecosystem Studies), as all these research teams are involved in research on DEB theory. You are 81 persons...
Tipo: Text Palavras-chave: Ecology; Bivalve; Chemistry; Ecotoxicology; Physiology; Dynamic energy budget; Biology.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/acte-6790.pdf
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Differences in wing melanization and pigmentation pattern in Drosophila buzzatii (Diptera: Drosophilidae) under chemical stress Rev. Soc. Entomol. Argent.
Mongiardino Koch,Nicolás; Hasson,Esteban; Soto,Ignacio M..
Recently, the genetic basis and developmental mechanisms underlying the process of melanization have become progressively elucidated, allowing us to study the evolutionary processes that govern the huge variability of pigmentation observed in nature. However, environmental factors contributing to such variability have received little attention, even though they might have profound ecological consequences. Here we describe a method for analyzing the wing melanization patterns of drosophilids in both qualitative and quantitative ways. We test this method on wings of Drosophila buzzatii Patterson & Wheeler individuals, reared in control and alkaloid-enriched mediums. The alkaloids were extracted from the secondary host of these flies, Echinopsis...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Drosophila buzzatii; Melanin; Ecotoxicology; Alkaloids; Stress.
Ano: 2012 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802012000100008
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Ecotoxicological studies on the pejerrey (Odontesthes bonariensis, Pisces Atherinopsidae) Biocell
Carriquiriborde,Pedro; Ronco,Alicia.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Odontesthes bonariensis; Ecotoxicology; Environmental pollution; Heavy metals; Pesticides.
Ano: 2006 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452006000100012
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Ecotoxicological testing for the marine environment: report on an international Symposium held in Belgium in 1983 OMA
Persoone, G.; Jaspers, E.; Claus, C..
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ecotoxicology; Marine environment; Toxicity tests.
Ano: 1986 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3224
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Editorial: Impacts of Marine Litter ArchiMer
Galgani, Luisa; Beiras, Ricardo; Galgani, Francois; Panti, Cristina; Borja, Angel.
Tipo: Text Palavras-chave: Plastics; Nanoplastics; Microplastics; Environmental regulation; Ecotoxicology; Aquatic biota.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00491/60231/63602.pdf
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Editorial: New Challenges in Marine Pollution Monitoring ArchiMer
Bellas, Juan; Hylland, Ketil; Burgeot, Thierry.
Tipo: Text Palavras-chave: Marine pollution; Ecotoxicology; Biomonitoring; Water quality; Bioaccumulation.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00606/71775/70269.pdf
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Effects of dissolved mercury on embryogenesis, survival and growth of Mytilus galloprovincialis mussel larvae ArchiMer
Beiras, R; His, Edouard.
The effects of Hg concentrations ranging from 0 (control) to 1024 mu g l(-1) upon embryogenesis, survival and growth of Mytilus galloprovincialis mussel larvae were investigated. Embryogenesis was abnormal in 50% of the individuals at 10 mu g l(-1). The 48 h LC(50) for D-shaped, early umbonate, late umbonate and eyed larvae were 51, 164, 322 and 383 pg l(-1) respectively. The LC(50) was an allometric function of ash-free dry weight with exponent b = 0.60. Larval growth was significantly reduced after 6 d exposure to 4 mu g Hg l(-1) and after 10 d exposure to 2 mu g l(-1). No significant differences in lethal or sublethal sensitivity to Hg were found between M. galloprovincialis and previously studied Crassostrea gigas embryos and larvae. The implications...
Tipo: Text Palavras-chave: Mercury; Mytilus; Mussel; Larva; Growth; Embryo; Bioassay; Ecotoxicology.
Ano: 1995 URL: http://archimer.ifremer.fr/doc/00258/36946/35665.pdf
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Effects of dissolved mercury on embryogenesis, survival, growth and metamorphosis of Crassostrea gigas oyster larvae ArchiMer
Beiras, Ricardo; His, Edouard.
The effects of mercury (Hg) concentrations ranging from 0 (control) to 1024 µg 1-1 upon embryogenesis, survival, growth and metamorphosis of Crassostrea gigas (Thunberg) oyster larvae were investigated. Embryogenesis was abnormal in 50 % of the individuals at 11 µg 1-1 . The 48 h LD50 for D·shaped, umbonate and pediveliger larvae were 33, 115 and 200 µg 1-1 respectively. The increase in LD50 was partially explained by the larval weight increase, although weight-specific tolerance to Hg was higher in smaller larvae. Growth, the most sensitive physiological process studied, was significantly retarded at 4 µg 1-1. The metamorphosis rate was significantly reduced when competent pediveligers were exposed to 64 µg 1-1 for 48 h prior to the addition of the...
Tipo: Text Palavras-chave: Mercury; Oyster; Larvae; Embryo; Bioassay; Ecotoxicology; Crassostrea gigas.
Ano: 1994 URL: http://archimer.ifremer.fr/doc/00037/14867/12191.pdf
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Effects of dissolved mercury on embryogenesis, survival, growth of Mytilus galloprovincialis mussel larvae ArchiMer
Beiras, Ricardo; His, Edouard.
The effects of Hg concentrations ranging from 0 (control) to 1024 µg 1-1 upon embryogenesis, survival and growth of Mytilus galloprovincialis mussel larvae were investigated . Embryogenesis was abnormal in 50 % of the individuals at 10µg 1-1. The 48 h LC50 for D-shaped, early umbonate, late umbonate and eyed larvae were 51, 164, 322 and 383 µg 1- 1 respectively. The LC50 was an allometric function of ash-free dry weight with exponent b = 0.60. Larval growth was significantly reduced alter 6 d exposure to 4 µg Hg 1-1 and alter 10 d exposure to 2 µg 1-1. No significant differences in lethal or sublethal sensitivity to Hg were found between M. galloprovincialis and previously studied Crassostrea gigas embryos and larvae. The implications of these findings for...
Tipo: Text Palavras-chave: Mercury; Mytilus galloprovincialis; Mussel; Larvae; Growth; Embryonic development; Bioassay; Ecotoxicology.
Ano: 1995 URL: http://archimer.ifremer.fr/doc/00037/14868/12192.pdf
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Effets d’une exposition alimentaire chronique à un mélange environnemental de PCB et PBDE sur les traits d’histoire de vie, la bioénergétique et la dynamique des populations de poissons ArchiMer
Horri, Khaled.
Persistent organic pollutants (POPs) are a broad group of compounds with varying physicochemical and toxic properties. Among POP, polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) are two families of hydrophobic compounds sharing some similar environmental properties such as hydrophobicity, persistence, bioaccumulation and toxicity. Previous studies have demonstrated that these compounds could affect fish life-history traits such as survival, growth and reproductive success. However, few studies have focused on environmental situations as most previous works investigated the effect of either single congeners, or single families of molecules among POP, or high concentrations, so that results can hardly be transposed to natural...
Tipo: Text Palavras-chave: Poisson-zèbre; Écotoxicologie; Polluants organiques persistants; Allocation d’énergie; Modes d’action; Dynamique des populations; Populations structurées; Zebrafish; Ecotoxicology; Persistent organic pollutants; Energy allocation; Modes of action; Population dynamics; Structured populations.
Ano: 2018 URL: http://archimer.ifremer.fr/doc/00444/55592/57219.pdf
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Étude des voies de bioactivation du benzo[a]pyrène et du fluoranthène chez la sole commune (Solea solea) : Profil métabolique et génotoxicité ArchiMer
Wessel, Nathalie.
The aim of this Ph‟D was to study the biotransformation and the genotoxicity of two PAH of interest, namely the benzo[a]pyrene (BaP) and the fluoranthene (Fluo), in the common sole Solea solea, which is a benthic species sensitive to chemical pollution. The use of in vitro exposure models and the application of two different chemical analytical techniques allowed demonstrating that, as in higher vertebrates, the dihydrodiols and the phenols of BaP and Fluo are the major metabolites produced by sole liver enzymes. In vitro, the genotoxic potential of BaP and Fluo was demonstrated in sole, by the production of DNA adducts and oxidative DNA damage. The genotoxicity of Fluo appeared to be 50 fold less important than the genotoxicity of BaP. In the case of BaP,...
Tipo: Text Palavras-chave: Écotoxicologie; Hydrocarbures Aromatiques Polycycliques; Solea solea; Métabolisme; Génotoxicité; Ecotoxicology; Polycyclic Aromatic Hydrocarbons; Solea solea; Metabolism; Genotoxicity.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00032/14326/11609.pdf
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