Effect of the dispersion of oil in freshwater based on time-dependent Daphnia magna toxicity tests

1992 ◽  
Vol 48 (2) ◽  
Author(s):  
Eric Vindimian ◽  
Bernard Voilat ◽  
Jeanne Garric
Keyword(s):  
Daphnia Magna ◽  
Time Dependent ◽  
Toxicity Tests

scholarly journals Lactate dehydrogenase activity as an effect criterion in toxicity tests with Daphnia magna straus

Chemosphere ◽  
2001 ◽  
Vol 45 (4-5) ◽  
pp. 553-560 ◽  
Author(s):  
Teresa C. Diamantino ◽  
Elisabete Almeida ◽  
Amadeu M.V.M. Soares ◽  
Lúcia Guilhermino
Keyword(s):  
Lactate Dehydrogenase ◽  
Dehydrogenase Activity ◽  
Daphnia Magna ◽  
Toxicity Tests ◽  
Lactate Dehydrogenase Activity

scholarly journals Spatial and seasonal analysis of antimicrobials and toxicity tests with Daphnia magna, on the sub-basin of Piracicaba river, SP, Brazil

2017 ◽  
Vol 5 (6) ◽  
pp. 6070-6076 ◽  
Author(s):  
Nádia Hortense Torres ◽  
Marilia Moura de Salles Pupo ◽  
Luiz Fernando Romanholo Ferreira ◽  
Lucineide Aparecida Maranho ◽  
Juliana Heloisa Pinê Américo-Pinheiro ◽  
...  
Keyword(s):  
Daphnia Magna ◽  
Toxicity Tests ◽  
Seasonal Analysis ◽  
Piracicaba River

Prediction of mortality in chronic toxicity tests on Daphnia magna

1995 ◽  
Vol 29 (6) ◽  
pp. 1453-1459 ◽  
Author(s):  
Alberto Santojanni ◽  
Gessica Gorbi ◽  
Franco Sartore
Keyword(s):  
Daphnia Magna ◽  
Chronic Toxicity ◽  
Toxicity Tests ◽  
Prediction Of Mortality

scholarly journals Time-dependent toxicity of tire particles on soil nematodes

2021 ◽  
Author(s):  
Shin Woong Kim ◽  
Eva F Leifheit ◽  
Stefanie Maaß ◽  
Matthias C Rillig
Keyword(s):  
Pollution Source ◽  
Time Dependent ◽  
Toxicity Tests ◽  
Soil Toxicity ◽  
Soil Nematode ◽  
Short Term ◽  
Soil Matrix ◽  
C Elegans ◽  
Short Term Exposure ◽  
Lifetime Exposure

Tire-wear particles (TWPs) are being released into the environment by wearing down during car driving, and are considered an important microplastic pollution source. The chemical additive leaching from these polymer-based materials and its potential effects are likely temporally dynamic, since larger amounts of potentially toxic compounds can gradually increase with contact time of plastic particles with surrounding media. In the present study, we conducted soil toxicity tests using the soil nematode Caenorhabditis elegans with different soil pre-incubation (30 and 75 days) and exposure (short-term exposure, 2 days; lifetime exposure, 10 days) times. Soil pre-incubation increased toxicity of TWPs, and the effective concentrations after the pre-incubation were much lower than environmentally relevant concentrations. The lifetime of C. elegans was reduced faster in the TWP treatment groups, and the effective concentration for lifetime exposure tests were 100- to 1,000-fold lower than those of short-term exposure tests. Water-extractable metal concentrations (Cr, Cu, Ni, Pb, and Zn) in the TWP-soils showed no correlation with nominal TWP concentrations or pre-incubation times, and the incorporated metals in the TWPs may be not the main reason of toxicity in this study. Our results show that toxic effects of TWPs can be time-dependent, both in terms of the microplastic particles themselves and their interactions in the soil matrix, but also because of susceptibility of target organisms depending on developmental stage. It is vital that future work consider these aspects, since otherwise effects of microplastics and TWPs could be underestimated.

scholarly journals Acute and Chronic Toxicity of Prothioconazole and its Metabolite Prothioconazole-Desthio To Daphnia Magna

2021 ◽  
Author(s):  
An Xuehua ◽  
Liu Xinju ◽  
Jiang Jinhua ◽  
Wang Feidi ◽  
Lv Lu ◽  
...  
Keyword(s):  
Daphnia Magna ◽  
Chronic Toxicity ◽  
Parent Compound ◽  
Biological Indicators ◽  
Toxicity Tests ◽  
Response Relationship ◽  
Dose Response Relationship ◽  
Toxicological Effects ◽  
Acute And Chronic Toxicity ◽  
Growth And Reproduction

Abstract Prothioconazole (PTC) is a broad-spectrum triazole fungicide. Current research has mainly focused on its efficacy and residues, with few studies on its toxicological effects. This study assessed the effects of PTC, and its metabolite prothioconazole-desthio (PTCd), on the inhibition of activity, growth, and reproduction of Daphnia magna using acute and chronic toxicity tests. Additionally, the dose-response relationship was established to determine sensitive biological indicators. The acute toxicity test shows that the 48 h EC50 of PTC and PTCd to D. magna were 2.82 and 5.19 mg/L, respectively. The chronic toxicity of PTC and PTCd to D. magna were 0.00860 and 0.132 mg/L, respectively, with the parent compound being 15.3 times more toxic than its metabolite. The acute to chronic toxicity ratio (ACR) was calculated using chronic toxicity data, with ACR values of 227 and 27.5 for PTC and PTCd, respectively. These results indicate that both PTC and PTCd affect the growth and reproduction of D. magna, and the toxicity of the parent compound is greater than that of its metabolite. In conclusion, the metabolites of this pesticide have sufficient toxicity to harm D. magna at relevant environmental concentrations, and their environmental risk should not be neglected.

Sign in / Sign up

Export Citation Format

Share Document