Consulta: subjectFacets:"Toxicity tests"
Registros recuperados: 17
Data/hora: 11/06/2024 02:09:27

In search of standardisation: A comparison of toxicity bioassays on two marine crustaceans (Palaemon serratus and Tigriopus brevicornis).
Provedor de dados: 5
Autores: Le Dean, Loic; Devineau, J.
In order to mitigate the insufficiency of the number of currently available toxicity tests in marine middle, two studies on the effects of cadmium and zinc were carried through with two marine crustaceans: the prawn Palaemon serratus and a copepoda Tigriopus brevicornis. The comparison of methodologies (rearing conditions - experimental procedure) and results obtained allowed to show the advantages and the disadvantages of these two tests in order to consider a standardization.
Tipo: Text
Palavras-chave: Copepoda; Decapoda; Pollution tolerance; Toxicity tests; Marine crustaceans.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/publication-1780.pdf

Toxicite de Detergents et d'un Dispersant sur Artemia salina Leach.
Provedor de dados: 5
The authors study the toxic influence of 3 detergents (Tween 20 or Polysorbate 20, laurylsulfate of sodium, Secosyl or N-Lauroyl sarcosinate of sodium) and of a dispersent (Finasol OSR sub(2) or Dodecyl Sodium sulfate) on the hatching and the survival of the brine shrimp, (A. salina)). The determination of the DL sub(50) was effected after 24 h.
Tipo: Text
Palavras-chave: Artemia salina; Hatching; Survival; Pollution effects; Chemical pollutants; Detergents; Dispersants; Toxicity tests.
Ano: 1980
URL: http://archimer.ifremer.fr/doc/1980/publication-1907.pdf

Toxicite et persistance en milieu marin d'un insecticide derive des benzoylurees: le diflubenzuron.
Provedor de dados: 5
Autores: Alzieu, Claude.
The laboratory tests showed that the diflubenzuron does not present acute toxicity to shellfish and fish, but can affect the survival rate of Artemia salina and Palaemonetes varians, when its concentration rises to the level of its water solubility. The insecticide persistence in sea water had been found to be 3 weeks and its concentration factor in the fish after 52 days of exposure was very low. The use of dimilin in coastal zones for the eradication of caterpillars seems to have an insignificant impact on marine ecosystem, particularly on the molluscs.
Tipo: Text
Palavras-chave: Toxicity tests; Insecticides.
Ano: 1977
URL: http://archimer.ifremer.fr/doc/1977/publication-1977.pdf

Etude des effets d'effluents de fabrication de dioxyde de titane sur le developpement larvaire d'un crustace decapode: Palaemon serratus (Pennant).
Provedor de dados: 5
Autores: Lassus, Patrick; Maggi, Pierre.
The effluents are characterized by acidity produced by the presence of sulfuric acid, and a slight quantity of several metallic salts. Effects on the larval development of P. serratus are discussed.
Tipo: Text
Palavras-chave: Palaemon serratus; Larval development; Toxicity tests.
Ano: 1977
URL: http://archimer.ifremer.fr/doc/1977/publication-1978.pdf

Dinoflagelles toxiques sur les cotes francaises pendant l'ete 1983.Validite du test-souris pour le controle routinier de secteurs mytilicoles contamines par la toxine du Dinophysis.
Provedor de dados: 5
Autores: Marcaillou-le Baut, Claire; Le Dean, Loic; Truquet, Philippe.
Following exceptional outbreak of toxic dinoflagellate species in Vilaine Bay (summer 1983) a survey was carried out: variations in phytoplankton abundance and distribution in water and in mussel guts were followed. In the same time toxicity studies using mouse-test were performed with contaminated shellfishes, and mouse-test calibration was attempted. In spite of sampling and analysis conditions could be open to criticism, results obviously showed relation between shellfishes toxicity and occurrence of responsible species: Dinophysis acuminata.
Tipo: Text
Palavras-chave: Brittany; France; ANE; Dinophysis acuminata; Red tides; Toxicity tests; Food poisoning; Biological poisons; Mussel culture.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/publication-1808.pdf

Doses efficaces en glyphosate et en 2,4-D pour le contrôle chimique des laitue d'eau (Pistia stratiotes, Linn.) et  toxicité du glyphosate vis-à-vis des tilapias (Sarotherodon melanotheron).
Provedor de dados: 20
Autores: Etien, N.; Kaba, N.; Amon Kothias, J.B.
Les effets toxiques des herbicides Round up (glyphosate)et 2,4-D (herbazol) ont été testés puis comparés sur des échantillons de salade d'eau (Pistia stratiotes, Linn., Aracées) mis en culture dans des aquariums en verre. Le glyphosate paraît plus toxique sur ces plantes que le 2,4-D. Il a été donc testé sur des juvéniles de tilapias Sarotherodon melanotheron.La dose léthale chez le tilapia (CL50=13.25mg.l-1) est 18,37 et 74 fois environ plus élevée que la dose toxique de glyphosate chez les plantes pour les profondeurs d'eau de 1,2 et 4 mètres respectivement
Tipo: Journal Contribution
Palavras-chave: Toxicity tests; Plant control.
Ano: 1991
URL: http://hdl.handle.net/1834/5524

Tolerance tests with three refined petroleum products and edible mollusc - Tympanotonus fascatus (Linne)
Provedor de dados: 20
Autores: Oyewo, E.O.
The tolerance of Tympanotonus fuscatus (linne) to films and dispersions of three refined petroleum products has been investigated. The tolerance ranking was Diesel Oil &gt; Kerosene &gt; Petrol. The dispersions were more deleterious to the test animals by varying orders of magnitude. Responsiveness and the capacity for proper orientation were adversely affected with the latter being affected before the former. An indication of upper threshold values for two of the observed responses is presented.
Tipo: Report
Palavras-chave: Pollutant identification; Pollution; Toxicity tests; Tolerance; Pollution; Tolerance; Http://aims.fao.org/aos/agrovoc/c_6077; Http://aims.fao.org/aos/agrovoc/c_37740.
Ano: 1988
URL: http://hdl.handle.net/1834/2437

Etude quantitative et qualitative des métallothioneines chez la daurade "Sparus  aurata" exposée aux métaux lourds
Provedor de dados: 20
Autores: Ameur, S.; Ghedira, J.; Guerbej, H.; Jebali, J.; Bouraoui, J.; Boussetta, H.
Dans l’environnement marin, les éléments traces peuvent s’accumuler dans les organismes à des concentrations supérieures à celles présentes dans l’eau. L’étude de la distribution tissulaire des métaux traces au niveau des organismes qui y sont exposés, constitue un aspect très important pour la compréhension de leur devenir. En outre, le suivi de la réponse biologique spécifique de ces organismes sentinelles aux xénobiotiques complète et consolide l’analyse chimique. Ce travail vise à étudier la distribution tissulaire des métaux traces et des métallothionéines (MTs) chez la daurade «Sparus aurata » traitée par un métal essentiel (le cuivre) et un métal non essentiel (le cadmium) à une concentration de 500µg /Kg de poids frais pendant 48 heures....
Tipo: Journal Contribution
Palavras-chave: Animal organs; Bioaccumulation; Cadmium; Gills; Heavy metals; Metals; Pollutants; Pollution effects; Sediment pollution; Toxicity tests; Trace metals; Marine sciences; Biomarkers of exposure (organisms); Metallic elements.
Ano: 2009
URL: http://hdl.handle.net/1834/4448

Growth and toxicity tests on the marine nanoplanktonic alga &lt;i&gt;Platymonas tetrathele&lt;/i&gt; G.S. West in the presence of crude oil and emulsifiers
Provedor de dados: 27
Autores: Mommaerts-Billiet, F.
Phytoplankton response to environmental pollution by oil and emulsifiers has been studied. The nanoplanktonic flagellate &lt;i&gt;Platymonas tetrathele&lt;/i&gt; has been assayed with increasing concentrations of crude oil, industrial non-ionic emulsifiers and mixtures of these products. Cultures poisoned with an emulsifier with an aromatic solvent exhibited a very long lag phase. Diminished growth rates were observed for all the products tested most of the time at concentrations above 50 ppm. The mixtures showed a toxicity close to that of the emulsifier component at its concentration in the mixture and lower than that of the crude oil alone. Fine structure modifications have been investigated and the possible ecological effects of such pollution have...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth; Marine pollution; Nannoplankton; Toxicity tests.
Ano: 1973
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3478

The ARC-test: a standardized short-term routine toxicity test with &lt;i&gt;Artemia&lt;/i&gt; nauplii: methodology and evaluation
Provedor de dados: 27
Autores: Vanhaecke, P.; Persoone, G.
Considering the need for reliable standardized routine toxicity tests for the marine environment, a short-term bioassay with &lt;i&gt;Artemia&lt;/i&gt; nauplii has been developed for routine testing. The major reason for the selection of brine shrimp as test species is the continuous availability of &lt;i&gt;Artemia&lt;/i&gt; under the form of dry cysts from which the larvae are hatched very easily. This unique advantage solves one of the major problems of aquatic ecotoxicological tests, namely stock recruitment and/or culturing; the &lt;i&gt;Artemia&lt;/i&gt; test can be performed anywhere and at any time from dry biological material available "on the shelf".An extensive study has been performed on various brine shrimp tests published in scientific...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Methodology; Nauplii; Toxicity tests; Artemia.
Ano: 1984
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3275

The use of &lt;i&gt;Artemia&lt;/i&gt; nauplii for toxicity test: a critical analysis
Provedor de dados: 27
Autores: Sorgeloos, P.; Remiche-Van der Wielen, C.; Persoone, G.
Because of their easy hatching from dry cysts and their year-round availability, nauplii of the brine shrimp &lt;i&gt;&lt;i&gt;Artemia&lt;/i&gt; salina&lt;/i&gt; are most convenient test organisms for toxicity studies. The bioassays mentioned in literature have, however, mostly been carried out with larvae of which neither the exact instar stage nor the geographical origin is known. The incubation of the cysts should always be carried out under strictly controlled temperature conditions since both the onset of hatching and the length of the hatching period are temperature-dependent. Moreover, the experiments should only be carried out with populations of nauplii of the same stage of development since it is demonstrated that the second and third instars are...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nauplii; Toxicity tests; Artemia.
Ano: 1978
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3588

Ecotoxicological testing for the marine environment: report on an international Symposium held in Belgium in 1983
Provedor de dados: 27
Autores: 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

Report on an intercalibration exercise on a short-term standard toxicity test with &lt;i&gt;Artemia&lt;/i&gt; nauplii (ARC-test)
Provedor de dados: 27
Autores: Vanhaecke, P.; Persoone, G.
Considering the necessity for standardization of toxicity tests and the need for simple and reliable routine tests, the &lt;i&gt;Artemia&lt;/i&gt; Reference Center at the State University of Ghent in Belgium has developed a short term standard toxicity test with &lt;i&gt;Artemia&lt;/i&gt; nauplii. This simple and inexpensive bioassay which can be used as a screening test to determine the toxicity of chemicals to aquatic organisms, has been discussed in detail during a special workshop devoted to toxicity tests with brine shrimp, at the occasion of the "International Symposium on the brine shrimp &lt;i&gt;&lt;i&gt;Artemia&lt;/i&gt; salina&lt;/i&gt;"(Corpus Christi, Texas, USA; August 1979). Besides a few minor modifications, the test methodology was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Intercalibration; Nauplii; Toxicity tests; Artemia.
Ano: 1981
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3377

Research on the development of a short term standard toxicity test with &lt;i&gt;Artemia&lt;/i&gt; nauplii
Provedor de dados: 27
Autores: Vanhaecke, P.; Persoone, G.; Claus, C.; Sorgeloos, P.
Standardization of toxicity tests on aquatic organisms to detect the impact of chemicals on freshwater or marine ecosystems is an urgent necessity. From the variety of methods, criteria, and test species proposed, simple standardized tests for algae, crustaceans, and fish are now close to being adopted at the international level for the freshwater environment. Despite the same urgency, very little has been achieved for the marine environment. &lt;i&gt;Artemia&lt;/i&gt; is an extremely suitable test-species since, contrary to all other organisms, it does not require continuous maintenance of stock cultures. Unfortunately none of the &lt;i&gt;Artemia&lt;/i&gt; toxicity tests that have been worked out so far can be adopted as such as a representative standard...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nauplii; Toxicity tests; Artemia.
Ano: 1980
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3698

Proposal for a short-term toxicity test with &lt;i&gt;Artemia&lt;/i&gt; nauplii
Provedor de dados: 27
Autores: Vanhaecke, P.; Persoone, G.; Claus, C.; Sorgeloos, P.
Although standardization of toxicity tests on aquatic organisms is an urgent necessity, very little has yet been achieved for the marine environment. As a first step in this direction, a simple, inexpensive and reliable short-term routine test with &lt;i&gt;Artemia&lt;/i&gt; larvae is proposed. This test is the result of an extensive study in our laboratory, taking into account the advantages and disadvantages of &lt;i&gt;Artemia&lt;/i&gt; bioassays published by various authors. The major advantage of the brine shrimp as a test species is its continuous availability under the form of dry cysts which can be hatched very easily; this eliminates all biological, technological, and financial problems of stock recruitment and/or culturing. The acute test...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nauplii; Toxicity tests; Artemia.
Ano: 1981
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3711

Development of a flow-through system for the study of toxicity and bioaccumulation processes in aquatic invertebrates
Provedor de dados: 27
Autores: Blust, R.; Decleir, W.
A flow-through test system for the study of toxicity and bioaccumulation processes is described. The apparatus can operate within a very wide range of flow rates. Flow deviations are less than 2% and the variation in test-agent concentration, (determined for copper) ranges from 3 to 8%. As a practical test a copper-toxicity experiment on adult &lt;i&gt;Artemia&lt;/i&gt; was carried out and the results compared with data obtained from a similar but static assay. The results indicate that: - bioassay and accumulation experiments must preferably be carried out under flow-through conditions to keep the concentration and bioavailability of the toxicant as constant as possible;- the data analysis must be based upon measured test-solution toxicant-concentrations...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioaccumulation; Marine invertebrates; Toxicity tests.
Ano: 1984
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3261

State of the science and the way forward for the ecotoxicological assessment of contaminated land
Provedor de dados: 86
Autores: Kuperman,Roman G.; Checkai,Ronald T.; Garcia,Marcos Vinicius Bastos; Römbke,Jörg; Stephenson,Gladys L.; Sousa,José Paulo.
Over the past two decades, soil ecotoxicologists have made strides in utilizing the basic concepts and advancements in soil zoology and ecology. They have applied the existing tools, and developed new ones to investigate how chemical contamination can affect soil ecosystems, including the degradation or destruction of soil quality and habitats or the diminishment of belowground biodiversity. Soil ecotoxicologists are applying a suite of standard protocols, originally developed as laboratory tests with single chemicals (e.g., pesticides), and further enhancing both the approaches and protocols for the assessment of contaminated lands. However, ecological relevance of some approaches remains unresolved. The authors discuss the main challenges for a coherent...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Contamination; Ecological relevance; Ecological risk assessment; Soil pollution; Terrestrial model ecosystems; Toxicity tests.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800004