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A simple approach to integrate the ecotoxicological and chemical data for the establishment of environmental risk levels BABT
Cesar,Augusto; Abessa,Denis Moledo de Souza; Pereira,Camilo Dias Seabra; Santos,Aldo Ramos; Fernández,Nuria; Choueri,Rodrigo Brasil; DelValls,Tomas Angel.
In this work, multivariate and numeric methods were used to integrate the chemical and ecotoxicological data obtained for the sediments from the Santos Estuarine System, and for the vicinity of the discharges of the Submarine Sewage Outfall of Santos, in order to establish more accurately the environmental risks, identify the priority areas and thus provide guidance to control the programs and public policies. For both the datasets, the concentrations which exceeded numeric sediment guidelines tended to be associated to toxicity. For the estuary, this trend was corroborated by the correlations between the toxicity and Cu and PAHs levels, whereas for the sewage outfall region, this was observed through the correlation between the toxicity and Hg contents....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sediment; Contamination; Toxicity; Tiburonella viscana; Environmental risk assessment.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000100028
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A simple HPLC method for the determination of halcinonide in lipid nanoparticles: development, validation, encapsulation efficiency, and in vitro drug permeation BJPS
Lopes,Clarissa Elize; Langoski,Gisele; Klein,Traudi; Ferrari,Priscileila Colerato; Farago,Paulo Vitor.
ABSTRACT Halcinonide is a high-potency topical glucocorticoid used for skin inflammation treatments that presents toxic systemic effects. A simple and quick analytical method to quantify the amount of halcinonide encapsulated into lipid nanoparticles, such as polymeric lipid-core nanoparticles and solid lipid nanoparticles, was developed and validated regarding the drug's encapsulation efficiency and in vitro permeation. The development and validation of the analytical method were carried out using the high performance liquid chromatography with the UV detection at 239 nm. The validation parameters were specificity, linearity, precision and accuracy, limits of detection and quantitation, and robustness. The method presented an isocratic flow rate of 1.0...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Halcinonide/encapsulation efficiency; Halcinonide/quantification; Polymeric lipid-core nanoparticles; Solid lipid nanoparticles; Topical administration; Toxicity; High performance liquid chromatography/method validation.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200604
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A third generation regimen VACOP-B with or without adjuvant radiotherapy for aggressive localized non-Hodgkin's lymphoma: report from the Italian Non-Hodgkin's Lymphoma Co-operative Study Group BJMBR
Santini,G.; De Souza,C.; Aversa,S.; Patti,C.; Tedeschi,L.; Candela,M.; Olivieri,A.; Chisesi,T.; Rubagotti,A.; Centurioni,R.; Nardi,V.; Congiu,M.; Gennaro,M.; Truini,M..
The objective of this multicenter prospective study was to determine the clinical efficacy and toxicity of a polychemotherapeutic third generation regimen, VACOP-B, with or without radiotherapy as front-line therapy in aggressive localized non-Hodgkin's lymphoma. Ninety-three adult patients (47 males and 46 females, median age 45 years) with aggressive localized non-Hodgkin's lymphoma, 43 in stage I and 50 in stage II (non-bulky), were included in the study. Stage I patients received VACOP-B for 6 weeks plus involved field radiotherapy and stage II patients received 12 weeks VACOP-B plus involved field radiotherapy on residual masses. Eighty-six (92.5%) achieved complete remission and 4 (4.3%) partial remission. Three patients (3.2%) were primarily...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Localized aggressive non-Hodgkin's lymphoma; VACOP-B; Radiotherapy; Toxicity.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000500014
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Action de l'acétate de tributyle-étain sur les oeufs et les larves D de deux mollusques d'intérêt commercial : Crassostrea gigas (Thunberg) et Mytilus galloprovincialis (Lmk) ArchiMer
Robert, Rene; His, Edouard.
The Tributyl tin acetate, a component of certain antifouling paints, has deleterious effects on eggs and D shaped larvae from Crassostrea gigas at 5 p.p.b. (HIS & ROBERT, 1980). Here we have tested concentrations as low as 1 p.p.b. on eggs and on 24 hours old larvae both from Crassostrea gigas and Mytilus galloprovincialis. The same results are got ; this product kills embryos and larvae in a few days ; it prevents growth of 24 hours old larvae exposed to this toxic. Mussels larvae seem to be less sensitive.
Tipo: Text Palavras-chave: Antifouling; Larves; Pollution; Toxicité; Bivalvia; Crassostrea gigas; Mytilus galloprovincialis; Antifouling; Larvae; Pollution; Toxicity; Bivalvia; Crassostrea gigas; Mytilus galloprovincialis.
Ano: 1981 URL: http://archimer.ifremer.fr/doc/00037/14862/12185.pdf
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Actividad biológica de extractos de Tagetes filifolia Lag. en la mosca blanca Trialeurodes vaporariorum West. (Hemiptera: Aleyrodidae) Colegio de Postgraduados
Camarillo de la Rosa, Gabriela.
Con la finalidad de proteger a los cultivos de las plagas sin provocar daño al ambiente y al humano, se ha generado la búsqueda de sustancias vegetales insecticidas y repelentes efectivos. El objetivo de este trabajo fue identificar los compuestos principales en el aceite esencial del anisillo Tagetes filifolia Lag. y evaluar la actividad biológica de extractos acuosos, aceites y turbios de flores, hojas, planta completa y raíz y el compuesto trans-anetol sobre la mosca blanca de los invernaderos Trialeurodes vaporariorum West. (Hemiptera: Aleyrodidae). Los compuestos se identificaron mediante cromatografía de gases acoplado a un espectrómetro de masas. Se evaluó repelencia al exponer adultos a un disco foliar tratado dentro de un cilindro por 24 h;...
Tipo: Tesis Palavras-chave: Aceites esenciales; Tagetes; Inhibición de oviposición; Mortalidad; Repelencia Essentials oils; Tagetes; Oviposition inhibition; Toxicity; Repellency.
Ano: 2012 URL: http://hdl.handle.net/10521/1039
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Actividad biológica de extractos de Tagetes filifolia Lag. en la mosca blanca Trialeurodes vaporariorum West. (Hemiptera: Aleyrodidae) Colegio de Postgraduados
Camarillo de la Rosa, Gabriela.
Con la finalidad de proteger a los cultivos de las plagas sin provocar daño al ambiente y al humano, se ha generado la búsqueda de sustancias vegetales insecticidas y repelentes efectivos. El objetivo de este trabajo fue identificar los compuestos principales en el aceite esencial del anisillo Tagetes filifolia Lag. y evaluar la actividad biológica de extractos acuosos, aceites y turbios de flores, hojas, planta completa y raíz y el compuesto trans-anetol sobre la mosca blanca de los invernaderos Trialeurodes vaporariorum West. (Hemiptera: Aleyrodidae). Los compuestos se identificaron mediante cromatografía de gases acoplado a un espectrómetro de masas. Se evaluó repelencia al exponer adultos a un disco foliar tratado dentro de un cilindro por 24 h;...
Tipo: Tesis Palavras-chave: Aceites esenciales; Tagetes; Inhibición de oviposición; Mortalidad; Repelencia; Essentials oils; Tagetes; Oviposition inhibition; Toxicity; Repellency.
Ano: 2009 URL: http://hdl.handle.net/10521/1542
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Actividad biológica de extractos de Tagetes filifolia Lag. en la mosca blanca Trialeurodes vaporariorum West. (Hemiptera: Aleyrodidae) Colegio de Postgraduados
Camarillo de la Rosa, Gabriela.
Con la finalidad de proteger a los cultivos de las plagas sin provocar daño al ambiente y al humano, se ha generado la búsqueda de sustancias vegetales insecticidas y repelentes efectivos. El objetivo de este trabajo fue identificar los compuestos principales en el aceite esencial del anisillo Tagetes filifolia Lag. y evaluar la actividad biológica de extractos acuosos, aceites y turbios de flores, hojas, planta completa y raíz y el compuesto trans-anetol sobre la mosca blanca de los invernaderos Trialeurodes vaporariorum West. (Hemiptera: Aleyrodidae). Los compuestos se identificaron mediante cromatografía de gases acoplado a un espectrómetro de masas. Se evaluó repelencia al exponer adultos a un disco foliar tratado dentro de un cilindro por 24...
Tipo: Tesis Palavras-chave: Aceites esenciales; Tagetes; Inhibición de oviposición; Mortalidad; Repelencia; Maestría; Entomología y Acarología; Essentials oils; Tagetes; Oviposition inhibition; Toxicity; Repellency.
Ano: 2009 URL: http://hdl.handle.net/10521/1327
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Acute toxicity and histopathology in ornamental fish amazon bluespotted corydora (Corydoras melanistius) exposed to formalin Anais da ABC (AABC)
Santos,Rudã F.B.; Dias,Henrique M.; Fujimoto,Rodrigo Y..
The objective of this work was to evaluate the acute toxicity of formalin and histopathological effects on the Amazon ornamental fish, bluespotted coridora (Corydoras melanistius). A randomized design was used, with ten concentrations of formalin (40%) (0, 3, 6, 12, 25, 50, 100, 150, 200 and 250mg.L-1) with four replicates and five fish per container (3L) in static system for 96 hours. The moribund fish were killed and fixed in 10% formalin to proceed the histopathological analysis of gill, liver and kidney. At the end of this experiment the following mortality rates (%) were obtained in increasing order of exposure: 0, 0, 0, 0, 0, 65, 85, 100, 100 and 100%. The lethal concentration 50% (LC50-96h (I)) estimated was 50.76 mg.L-1 with regression of y =...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lethal concentration; Corydora; Formaldehyde; Toxicity; Histology; Amazon.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000400014
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Acute Toxicity Of Euphorbia Royleana Boiss (Euphorbiaceae) latex on freshwater catfish, Heteropneustes Fossilis (Siluriformes, Heteropneustidae) Acta Toxicol. Argent.
ManiRam,Prasad; Abhishek,Kumar; Diwakar,Mishra; Sunil K,Srivastav; Ajai K,Srivastav.
An acute toxicity test was performed by using a four-day static renewal test to determine the LC50 value of aqueous extract of Euphorbia royleana latex for the freshwater fsh, Heteropneustes fossilis. The LC50 values, their upper and lower confdence limits and slope functions were calculated. The LC50 values for aqueous extract of Euphorbia royleana latex at various exposure periods were 7.758 mg/L for 24 h, 5.847 mg/L for 48 h, 4.474 mg/L for 72 h and 3.090 mg/L for 96 h. The regression coeffcient showed that there was signifcant negative correlation between exposure time and different LC values. Hence, it is concluded that the concentration to produce toxicity of latex of Euphorbia royleana is comparable and close to the concentration to produce toxicity...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish; Euphorbia royleana; Toxicity; LC50.
Ano: 2010 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432010000100001
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Acute toxicity of nitrite to matrinxã, Brycon cephalus (Günther, 1869), (Teleostei-Characidae) Ciência Rural
Avilez,Ive Marchioni; Aguiar,Lucia Helena de; Altran,Alexandre Eneas; Moraes,Gilberto.
Nitrite leads to many physiological and hematological disturbances followed by lethality. This work reports the lethal concentration of nitrite to juvenile matrinxã. Experiments were done at 24ºC, pH 6.7-7.0 under natural photoperiod. Fish were exposed to 0.2- 0.5- 1.0 and 2.0mg L-1 of nitrite N-NO2 for 96h. The 96-h LC50 of nitrite-N was calculated by the trimmed Spearman-Karber method (0.86±0.05mg L-1; 0.57-1.30 to 95%CI) and it was concluded that matrinxã is very sensitive to environmental nitrite. Therefore, care must be taken to prevent accumulation of nitrite in intensive culture systems of matrinxã.
Tipo: Info:eu-repo/semantics/article Palavras-chave: LC50; Nitrite; Matrinxã; Brycon cephalus; Toxicity.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000600013
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Acute toxicity test of agricultural pesticides on silver catfish (Rhamdia quelen) fingerlings Ciência Rural
Kreutz,Luiz Carlos; Barcellos,Leonardo José Gil; Silva,Tális Oliveira; Anziliero,Deniz; Martins,Daiana; Lorenson,Monique; Marteninghe,Ariane; Silva,Leonardo Bolognese da.
Toxicity risks of agricultural pesticides to fishes are pivotal. Currently, many questions remain unsolved regarding to the toxicity of commonly used pesticides to silver catfish (Rhamdia quelen), a South American catfish. The present studies have been designed to investigate the acute toxicity and the lethal concentration (LC50) of four herbicides, two fungicides and two insecticides to silver catfish fingerlings. All experiments were carried out in triplicates, in a static bioassay system, using commercially available pesticides. The data was analyzed through the Trimmed Spearman-Karber method available from the Environmental Protection Agency. The 96hLC50 and 95% lower and upper confidence limits, respectively, for the following pesticides were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioassay; Toxicity; Pesticides; LC50; Rhamdia quelen.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000400022
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Age and time exposure-related toxicity of fenthion to male and female Anastrepha fraterculus (Wied.) (Diptera: Tephritidae) Anais da SEB
Humeres,Eduardo; Da Cruz,Ivana B.M.; Oliveira,Alice K. de.
Effect of age, sex and time exposure of Anastrepha fraterculus (Wied.) to toxicity of fenthion was evaluated. The age of the flies was important to the appearance of the first intoxication symptoms; males and females of reproductive ages (30 and 60 days-old, respectively) were less susceptible to insecticide than flies in the remainder ages (four and 120 days-old). The effect of body weight on insect intoxication was not detected. LT 50 biossay with fenthion (varying from 3-7 minutes) showed a lower susceptibility of males than females at all ages. Adults of both sexes and 30 days-old submitted to continuous and discontinuous exposure to fenthion did not show toxic cumulative effect of the insecticide. The statistical analysis suggests a possible general...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; Fruit-fly; Insecticide; Toxicity.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591999000200011
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Aluminum in corn plants: influence on growth and morpho-anatomy of root and leaf Rev. Bras. Ciênc. Solo
Batista,Michelli Fernandes; Moscheta,Ismar Sebastião; Bonato,Carlos Moacir; Batista,Marcelo Augusto; Almeida,Odair José Garcia de; Inoue,Tadeu Takeyoshi.
Aluminum (Al) toxicity is one of the most limiting factors for productivity. This research was carried out to assess the influence of Al nutrient solution on plant height, dry weight and morphoanatomical alterations in corn (Zea mays L.) roots and leaves. The experiment was conducted in a greenhouse with five treatments consisting of Al doses (0, 25, 75, 150, and 300 µmol L-1) and six replications. The solutions were constantly aerated, and the pH was initially adjusted to 4.3. The shoot dry matter, root dry matter and plant height decreased significantly with increasing Al concentrations. Compared to the control plants, it was observed that the root growth of corn plants in Al solutions was inhibited, there were fewer lateral roots and the development of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dry matter production; Height; Toxicity; Zea mays L..
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000100018
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Aplicación estadística en los bioensayos de toxicidad con sedimentos extraído del Estero Salado, canal de acceso al Puerto Marítimo de Guayaquil OceanDocs
Villamar, F..
With the purpose of proving and determining in a short term the impact of the dredged material that can be caused by the organisms that inhabit the marine-estuary ecosystem, was performed toxicity bioassay of the sediment extracted from the bottom of the Salado Estuary. This sediment obstructs the access channels of the Marítime Port of Guayaquil. For this bioassay, was used white shrimp larvae of the species Litopenaeus vannamei, a commercially important organism that depends for its food on the organic detritus coming from the sediment and the column of estuary water in the studied area. The results obtained were analyzed applying the graphic arithmetic method and statistical analysis, through which it was determined that there is a direct relation...
Tipo: Journal Contribution Palavras-chave: Bioassays; Toxicity; Marine organisms; Sediments; Statistical analysis; Kurtosis; Dredged samples; Bioassays; Toxicity; Statistical analysis; Http://aims.fao.org/aos/agrovoc/c_15731; Http://aims.fao.org/aos/agrovoc/c_7826; Http://aims.fao.org/aos/agrovoc/c_7378.
Ano: 2002 URL: http://hdl.handle.net/1834/2257
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Are salty liquid food flavorings in vitro antitumor substances? Anais da ABC (AABC)
CARVALHO,FRANCISCO R.S.; MOURA,ANTONIO G.; RODRIGUES,GARDENIA F.; NUNES,NARCIA M.F.; LIMA,DAISY J.B.; PESSOA,CLAUDIA; COSTA,MARCILIA P.; FERREIRA,PAULO M.P.; PERON,ANA PAULA.
ABSTRACT The objective of this study was to evaluate the antiproliferative, cytotoxic and genotoxic potential of salty liquid synthetic flavorings of Butter, Cheddar Cheese and Onion. The antiproliferative potential (2.9-1500 µg/mL) was assessed by MTT assay after 72h using the human tumor lines SF-295 (glioblastoma), OVCAR-8 (ovarian), HCT-116 (colon) and HL-60 (promyelocytic leukemia) and primary cultures of murine Sarcoma 180 (S180) and peripheral blood mononuclear cells (PBMC). Allium cepa bulbs were exposed to growing respective doses (1 mL and 2 mL). Only Butter and Cheddar flavorings revealed cytotoxic activity on cancer cells, with IC50 values ranging from 125.4 µg/mL (Cheddar - HCT-116) to 402.6 µg/mL (Butter - OVCAR-8). Butter flavoring was the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Food additives; Allium cepa; Antiproliferative action; Neoplasic cells; Toxicity.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000401419
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Arsenic tolerance of Microcystis novacekii (Komárek-Compère, 1974) and its arsenic decontamination potential BABT
Ferreira,Fernanda Aires Guedes; Franco,Maione Wittig; Oliveira,Dirce Maria De; Magalhães,Sérgia Maria Starling; Barbosa,Francisco Antônio Rodrigues.
ABSTRACT Cyanobacteria possess metallic ion interaction properties that should be explored with the aim of recovering arsenic (As) contaminated areas. Contamination of As is an issue of worldwide concern due to the risk of human chronic intoxication and negative environmental health effects. In this study the potential decontamination of As(III) and As(V) using cyanobacteria cultures was assessed. Microcystis novacekii (Komárek-Compere, 1974) showed normal growth in concentrations of As(V) similar to those found in natural environments contaminated with As, demonstrating its resistance to As(V). Growth rates gradually decreased upon exposure to high As(V) concentrations from 600 to 5630 mg.L-1 while As(III) affected growth from 14.7 - 85.7 mg.L-1. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Arsenic; Cyanobacteria; Bioaccumulation; Toxicity; Growth rates.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100414
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Assessment of the Toxicity of Sub-chronic Low and High Doses of the Bio-insecticide Spinosad on the Liver, Kidney and the Cerebellum in Male Albino Mice BABT
El-Naggar,Sabry A; Eltantawi,Hala; Ibrahim,Mahrous A; Alm-Eldeen,Abeer.
ABSTRACT Spinosad (SPD) is a highly selective insect control product. However, it was reported that SPD has toxicity toward other non-target organisms. This study was conducted to address the toxic effect of two sub-chronic low and high doses; 35 and 350 mg/kg SPD on some biochemical, histological and immunohistochemical parameters of the liver, kidney and cerebellum. Thirty-six male Swiss mice were divided into three groups of 12 mice each; first group (G1) served as a control, second group (G2) received a low sub-chronic dose of SPD that is equal to 35 mg/kg, and third group (G3) received a high sub-chronic dose of SPD that is equal to 350 mg/kg. The results showed that mice which were received 350 mg/kg SPD showed a significant decrease in the body...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bio-insecticide; Spinosad; Toxicity; Sub-chronic; Biochemical; Histological; Immunohistochemical; Alterations.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100306
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Assessment of toxicity of a biosurfactant from Candida sphaerica UCP 0995 cultivated with industrial residues in a bioreactor Electron. J. Biotechnol.
Bezerra de Souza Sobrinho,Humberto; de Luna,Juliana Moura; Rufino,Raquel Diniz; Figueiredo Porto,Ana Lúcia; Sarubbo,Leonie Asfora.
Background: The aim of the present study was to propose a low-cost method for the production of a biosurfactant by the yeast Candida sphaerica and assess its toxicity and phytotoxicity. The medium was formulated with distilled water supplemented with residue from a soy oil refinery (5%) and corn steep liquor (2.5%) as substrates. These two products were the sources of carbon and nitrogen as well as mineral elements to encourage the growth of the microorganism and production of a biosurfactant. Results: The isolated biosurfactant yield was 6.364 g/l. The biosurfactant exhibited an excellent ability to reduce surface tension (26 mN/m) and demonstrated no toxicity against seeds of Brassica oleracea, Chicoria intybus and Solanum gilo or the micro crustacean...
Tipo: Journal article Palavras-chave: Biosurfactant; Bioreactor; Candida sphaerica; Industrial residues; Toxicity.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000400004
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Avaliação da segurança da introdução de Pseudomonas putida no ambiente: testes ecotoxicológicos da Fase 1 e perspectivas de implementação de novos estudos. Infoteca-e
JONSSON, C. M.; CASTRO, V. L. S. S. de; SILVA, C. M. M.; MAIA, A. de H. N..
Resumo: Os procedimentos de avaliação de risco necessários para a liberação de agentes microbianos em campo são executados de acordo com protocolos em fases sequenciais nas quais estão incluídos os estudos em organismos não-alvo. A bactéria Pseudomonas putida - linhagem AF7- (P. putida AF7) tem demonstrado potencial de aplicação no meio ambiente, tanto como biorremediador, como no controle de pragas. No presente estudo foram avaliados alguns efeitos desta bactéria em roedores (ratos Wistar) e organismos aquáticos (Daphnia similis) que constam da Fase inicial dos protocolos. Também foi avaliada a atividade enzimática microbiana em três tipos de solo após a sua inoculação com o agente biológico. Os ratos não demonstraram sintomas de patogenicidade, apesar do...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Teste ecotoxicológico; Ratos Wistar.; Bactéria; Pseudomonas putida; Controle biológico; Toxidez; Roedor; Biological control; Toxicity testing; Toxicity; Daphnia..
Ano: 2011 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/907631
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Avaliação dos efeitos adversos de entomopatógenos sobre peixes e camundongos. Infoteca-e
OLIVEIRA FILHO, E. C. de; RAMOS, F. R.; MUNIZ, D. H. de F.; LOPES, M. C.; OLIVEIRA, R. da S.; ALVES, R. T.; GRISOLIA, C. K.; PONTES, R. G. M. S. de.
Neste estudo, quatro cepas de Bacillus foram testadas para avaliar seus efeitos adversos sobre peixes e camundongos. Concentrações foram testadas de acordo com protocolos internacionais na faixa de 106 e 108 esporos por mililitro para peixes e dose de 108 esporos por animal para camundongos. Não houve letalidade em nenhuma das espécies testadas. No estudo de necrose-apoptose com eritrócitos periféricos de O. niloticus, foi observado aumento na frequência de células necróticas na exposição a duas cepas de B. thurigiensis. Os dados obtidos mostraram que, para os peixes expostos aos microrganismos diluídos na água, não foi observado efeito tóxico, mas, por rotas de exposição não convencionais, tanto Bt israelensis como Bt kurstaki apresentaram toxicidade,...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Toxidez; Bactéria; Bacillus thuringiensis.; Toxicity; Bacillus (bacteria); Bacillus sphaericus..
Ano: 2009 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/659329
Registros recuperados: 210
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