Ecotoxicity of nanosized magnetite to crustacean Daphnia magna and duckweed Lemna minor

Hydrobiologia ◽  
2015 ◽  
Vol 798 (1) ◽  
pp. 141-149 ◽  
Author(s):  
Irina Blinova ◽  
Liina Kanarbik ◽  
Natalja Irha ◽  
Anne Kahru
Keyword(s):  
Daphnia Magna ◽  
Lemna Minor ◽  
Nanosized Magnetite

Bioremediation of heavy metal contaminated medium using Lemna minor, Daphnia magna and their consortium

2017 ◽  
Vol 34 (1) ◽  
pp. 43-55 ◽  
Author(s):  
Şeyda Fikirdeşici-Ergen ◽  
Esra Üçüncü-Tunca ◽  
Murat Kaya ◽  
Evren Tunca
Keyword(s):  
Heavy Metal ◽  
Daphnia Magna ◽  
Lemna Minor

scholarly journals Evaluación del riesgo ambiental por petróleo crudo en las especies acuáticas Lemna minor, Daphnia magna y Danio rerio

2021 ◽  
Author(s):  
Alisson Valeska Caja-Molina ◽  
José Iannacone
Keyword(s):  
Daphnia Magna ◽  
Danio Rerio ◽  
Petroleum Hydrocarbon ◽  
Lemna Minor ◽  
Total Petroleum Hydrocarbon ◽  
Effect Concentration ◽  
L 96

Los derrames de petróleo ocasionan contaminación en los sistemas acuáticos y generan un problema ambiental grave. El objetivo del estudio fue evaluar el riesgo ambiental de los derrames de petróleo crudo mediante bioensayos de toxicidad letal y subletal en Lemna minor, Daphnia magna y Danio rerio. Se determinó la toxicidad de los hidrocarburos totales de petróleo (total petroleum hydrocarbon, TPH) en la fracción acumulada de petróleo mediante bioensayos con un diseño de bloques completos al azar (DBCA) de 6 x 4, con cinco concentraciones, un control y cuatro repeticiones. Las variables analizadas fueron el peso seco y la clorosis (L. minor); la mortalidad y la inmovilidad (D. magna), y la hipoactividad, el escape hacia el fondo y la hipoventilación (D. rerio). Los resultados obtenidos se evaluaron mediante diferencias estadísticas (p<0,05) entre las concentraciones y el control. Se determinaron los valores de la concentración en que no se observa efecto por exposición del contaminante (no observed effect concentration, NOEC) de <0,4 y 3,22 mg/L en las variables de clorosis y peso seco para L. minor. En el caso de D. magna, se obtuvo una concentración efectiva media para la inmovilidad (CE50-48h) de 2,74 mg/L y una concentración letal media (CL50-48h) de 6,22 mg/L. En el ensayo con el pez D. rerio, la variable de hipoactividad dio una NOEC y una concentración más baja en la que se observa efecto por exposición del contaminante (LOEC) de 14,28 y 28,61 mg/L a las 96 h de exposición, respectivamente. Los peces mostraron respuesta de escape hacia el fondo a 3,58 mg/L. En cuanto a la hipoventilación, los valores obtenidos de NOEC y LOEC fueron 7,15 y 14,31 mg/L (96 h). Se determinó el siguiente orden de toxicidad decreciente: L. minor (<0,40 mg/L – clorosis 168 h) > D. magna (1,61 mg/L – inmovilidad 48 h) > D. rerio (<3,58 mg/L – escape hacia el fondo 96 h). Todas las variables analizadas presentaron un cociente de riesgo mayor a 1, lo que dejó en evidenció el riesgo acuático ambiental.  

scholarly journals Assessment of acrylamide toxicity using a battery of standardised bioassays / Procjena toksičnosti akrilamida pomoću standardiziranih biotestova

2015 ◽  
Vol 66 (4) ◽  
pp. 315-321 ◽  
Author(s):  
Mira Zovko ◽  
Željka Vidaković-Cifrek ◽  
Želimira Cvetković ◽  
Jasna Bošnir ◽  
Sandra Šikić
Keyword(s):  
Daphnia Magna ◽  
Lemna Minor ◽  
Low Cost ◽  
Drinking Water Treatment ◽  
Pseudokirchneriella Subcapitata ◽  
Laboratory Animals ◽  
Freshwater Organisms ◽  
Desmodesmus Subspicatus ◽  
Class 1 ◽  
Increased Sensitivity

Acrylamide is a monomer widely used as an intermediate in the production of organic chemicals, e.g. polyacrylamides (PAMs). Since PAMs are low cost chemicals with applications in various industries and waste- and drinking water treatment, a certain amount of non-polymerised acrylamide is expected to end up in waterways. PAMs are non-toxic but acrylamide induces neurotoxic effects in humans and genotoxic, reproductive, and carcinogenic effects in laboratory animals. In order to evaluate the effect of acrylamide on freshwater organisms, bioassays were conducted on four species: algae Desmodesmus subspicatus and Pseudokirchneriella subcapitata, duckweed Lemna minor and water flea Daphnia magna according to ISO (International Organization for Standardisation) standardised methods. This approach ensures the evaluation of acrylamide toxicity on organisms with different levels of organisation and the comparability of results, and it examines the value of using a battery of low-cost standardised bioassays in the monitoring of pollution and contamination of aquatic ecosystems. These results showed that EC50 values were lower for Desmodesmus subspicatus and Pseudokirchneriella subcapitata than for Daphnia magna and Lemna minor, which suggests an increased sensitivity of algae to acrylamide. According to the toxic unit approach, the values estimated by the Lemna minor and Daphnia magna bioassays, classify acrylamide as slightly toxic (TU=0-1; Class 1). The results obtained from algal bioassays (Desmodesmus subspicatus and Pseudokirchneriella subcapitata) revealed the toxic effect of acrylamide (TU=1-10; Class 2) on these organisms.

scholarly journals TOXICIDAD DE CINCO EXTRACTOS ACUOSOS BOTÁNICOS SOBRE PANAGRELLUS REDIVIVUS (NEMATODA: PANAGROLAIMIDAE), DAPHNIA MAGNA (CRUSTACEA: DAPHNIIDAE), LEMNA MINOR (ARACEAE) Y RAPHANUS SATIVUS (BRASSICACEAE)

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Hildebrando Ayala ◽  
José Iannacone ◽  
Lorena Alvariño
Keyword(s):  
Daphnia Magna ◽  
Eucalyptus Globulus ◽  
Raphanus Sativus ◽  
Lemna Minor ◽  
Ricinus Communis ◽  
Ruta Graveolens ◽  
Panagrellus Redivivus ◽  
Urtica Urens

El impacto toxicológico de extractos botánicos en el ambiente acuático y terrestre es un área de investigación emergente a nivel global. Cinco extractos botánicos de eucalipto (Eucalyptus globulus, Myrtaceae), ruda (Ruta graveolens, Rutaceae), ortiga (Urtica urens, Urticaceae), muña (Minthostachys mollis, Lamiaceae) e higuerilla (Ricinus communis, Euphorbiaceae) con potencial para el control de plagas fueron evaluados sobre el microgusano de la avena Panagrellus redivivus, la pulga del agua Daphnia magna, la lenteja de agua Lemna minor y el rábano Raphanus sativus en bioensayos toxicológicos bajo condiciones de laboratorio. Daphnia magna en términos de CL a 48 h de exposición 50 fue más sensible a E. globulus y a R. communis. P. redivivus a 96 h de exposición fue más sensible a R. communis. La clorosis de L. minor a 96 h de exposición y la inhibición de la germinación en términos de CE a 96 h de exposición sobre R. sativus fueron más sensibles a R. graveolens. Minthostachys mollis 50 ocasionó la menor toxicidad en los cuatro modelos biológicos. Los extractos botánicos de eucalipto e higuerilla causan una mayor toxicidad en el ambiente acuático y en el ambiente terrestre el extracto acuoso de ruda produjo mayor efecto tóxico.

scholarly journals Mixture toxicity of six pharmaceuticals towards Aliivibrio fischeri, Daphnia magna, and Lemna minor

2021 ◽  
Author(s):  
Anna Białk-Bielińska ◽  
Łukasz Grabarczyk ◽  
Ewa Mulkiewicz ◽  
Alan Puckowski ◽  
Stefan Stolte ◽  
...  
Keyword(s):  
Daphnia Magna ◽  
Lemna Minor ◽  
Opioid Analgesic ◽  
Mixture Toxicity ◽  
Concentration Addition ◽  
Case Scenario ◽  
Worst Case ◽  
Ca Model ◽  
Inflammatory Drugs ◽  
Aliivibrio Fischeri

AbstractAs the knowledge on the joint effects of pharmaceuticals towards different non-target organisms is still limited, the aim of our study was to evaluate the toxicity of mixtures of pharmaceuticals, as well as their baseline toxicity towards three selected organisms, namely the bioluminescent bacteria Aliivibrio fischeri, the crustacean Daphnia magna, and the duckweed Lemna minor. Different mixtures composed of three up to five pharmaceuticals having the same or different mechanisms of action in terms of their therapeutic activity (non-steroidal anti-inflammatory drugs, opioid analgesic, antibacterial and anti-epileptic drugs) were investigated. The observed EC50s were compared with those predicted using the concentration addition (CA) and independent action (IA) models. In general, the EC50 values for mixtures predicted with the CA model were lower than those obtained with the IA model, although, in some cases, test predictions of these two models were almost identical. Most of the experimentally determined EC50 values for the specific mixtures were slightly higher than those predicted with the CA model; hence, a less than additive effect was noted. Based on the obtained results, it might be concluded that the CA model assumes the worst-case scenario and gives overall closer predictions; therefore, it should be recommended also for modeling the mixture toxicity of pharmaceuticals with different modes of action.

scholarly journals ACUTE TOXICITY AND ENVIRONMENTAL RISK OF DIFLUBENZURON TO Daphnia magna, Poecilia reticulata AND Lemna minor IN THE ABSENCE AND PRESENCE OF SEDIMENT

2011 ◽  
Vol 21 ◽  
Author(s):  
JAQUELINE PÉROLA DE SOUZA ◽  
LOUISE DE SOUZA MEDEIROS ◽  
ELISSANDRA ULBRICHT WINKALER ◽  
JOAQUIM GONÇALVEZ MACHADO-NETO
Keyword(s):  
Acute Toxicity ◽  
Daphnia Magna ◽  
Environmental Risk ◽  
Poecilia Reticulata ◽  
Lemna Minor ◽  
Fish Farming ◽  
Economic Losses ◽  
Target Species ◽  
Significant Toxicity

Parasitoses in fish farming are treated by the application of pesticides formulations commonly used in agriculture or veterinary medicine. For the control of ectoparasites, that cause economic losses to the fish production Diflubenzuron is utilized by direct application into water at a 2 mg.L-1 concentration. However, this practice can intoxicate non-target species. This research aimed at determining the acute toxicity of diflubenzuron to Daphnia magna, Poecilia reticulata and Lemna minor; evaluating its environmental risk and defining the role of the sediment in the bioavailability of this insecticide in the water. Results of the study implicate diflubenzuron as being extremely toxic to D. magna. However, no significant toxicity was observed in P. reticulata and L. minor. Bioavailability of this insecticide was significantly reduced by the presence of sediment in the water.

Toxicity of atrazine and the products of its homogeneous photocatalytic degradation on the aquatic organisms Lemna minor and Daphnia magna

2019 ◽  
Vol 26 (26) ◽  
pp. 27259-27267 ◽  
Author(s):  
Šárka Klementová ◽  
Lucie Hornychová ◽  
Michal Šorf ◽  
Jana Zemanová ◽  
David Kahoun
Keyword(s):  
Photocatalytic Degradation ◽  
Daphnia Magna ◽  
Lemna Minor ◽  
Aquatic Organisms

scholarly journals Assessing Ecological Impacts Of Land-Applied Municipal Biosolids : Effects Of Run-Off And Tile Drainage On The Aquatic Organisms Daphnia Magna, Hyalella Azteca And Lemna Minor

2021 ◽  
Author(s):  
Sonja Gebert
Keyword(s):  
Daphnia Magna ◽  
Lemna Minor ◽  
Aquatic Organisms ◽  
Hyalella Azteca ◽  
Ecological Impacts ◽  
Tile Drainage ◽  
Aquatic Life ◽  
Reference Soil ◽  
Run Off ◽  
Municipal Biosolids

The effect of municipal land applied biosolids run-off and tile drainage on aquatic organisms Daphnia magna, Hyalella azteca and Lemna minor was analyzed through a series of standardized eco-toxicological tests. Treatments included reference soil, reference soil amended with Guelph biosolids and reference soil amended with Kitchener biosolids. The assessment was done on biosolids elutriate collected after the simulated rainfall off the ramps on day 1 after the application of biosolids, and day 40 planted versus unplanted soil. Respiration rates, behavioural analysis and survivorship were tested on the two invertebrates, while 7-day Growth Inhibition test was performed on the plant. Although there were some significant differences between the reference soil and soil amended with biosolids elutriate, they were mostly on day 1 and in concentrations that are not likely to happen in nature. The plant Lemna minor showed eutrophication potential in elutriate from Day 1. The results are showing that although there are potential toxic constituents in the municipal biosolids that can adversely affect the aquatic life in the receiving waters, they largely very temporary and for the most part in concentrations that are environmentally irrelevant. To be able to understand the potential of using biosolids on agricultural fields in Ontario, more analytical and eco-toxicological studies should be performed that are relevant to Ontario's laws and topography.

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