ACUTE AND CHRONIC TOXICITY OF IMIDAZOLIUM-BASED IONIC LIQUIDS ON DAPHNIA MAGNA

2005 ◽  
Vol 24 (1) ◽  
pp. 87 ◽  
Author(s):  
Randall J. Bernot ◽  
Michael A. Brueseke ◽  
Michelle A. Evans-White ◽  
Gary A. Lamberti
Keyword(s):  
Ionic Liquids ◽  
Daphnia Magna ◽  
Chronic Toxicity ◽  
Acute And Chronic Toxicity

Acute and chronic toxicity assessment and the gene expression of Dhb, Vtg, Arnt, CYP4, and CYP314 in Daphnia magna exposed to pharmaceuticals

2015 ◽  
Vol 11 (2) ◽  
pp. 153-160 ◽  
Author(s):  
Seung Hyuck Bang ◽  
Ji-Young Ahn ◽  
Nam-Hui Hong ◽  
Simranjeet Singh Sekhon ◽  
Yang-Hoon Kim ◽  
...  
Keyword(s):  
Gene Expression ◽  
Daphnia Magna ◽  
Chronic Toxicity ◽  
Toxicity Assessment ◽  
Acute And Chronic Toxicity

Effect of food type on the acute and chronic toxicity of copper to Daphnia magna

1977 ◽  
Vol 7 (4) ◽  
pp. 343-349 ◽  
Author(s):  
ROBERT W. WINNER ◽  
THEODORE KEELING ◽  
ROBERT YEAGER ◽  
MICHAEL P. FARRELL
Keyword(s):  
Daphnia Magna ◽  
Chronic Toxicity ◽  
Food Type ◽  
Acute And Chronic Toxicity ◽  
Effect Of Food

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.

Changes of the acute and chronic toxicity of three antimicrobial agents to Daphnia magna in the presence/absence of micro-polystyrene

2020 ◽  
Vol 263 ◽  
pp. 114551
Author(s):  
Cen Yin ◽  
Xianhai Yang ◽  
Tianyi Zhao ◽  
Peter Watson ◽  
Feifei Yang ◽  
...  
Keyword(s):  
Daphnia Magna ◽  
Chronic Toxicity ◽  
Antimicrobial Agents ◽  
Acute And Chronic Toxicity

Acute and Chronic Toxicity of Veratrum Viride††The Veratrum viride studied was the whole-powdered drug marketed by Irwin, Neisler & Co. under the name, Vertavis. The work reported herein was supported by a grant from this firm. The batch of powder used in these experiments was stated by the manufacturer to have been assayed biologically by the Craw method on Daphnia magna. One Craw unit of the material studied was stated to be 15.6mg. With regard to this assay, Mr. R. O. Craw has been so kind as to allow us to publish a brief explanation: A reference lot of Yerolrum oirid; powder was set-aside as a standard and a 10% w/v aqueous extract was made of this powder. The average median length of life in 50 assays of 1000 daphnia on immersion in the solution was determined to be 2.22 hours. The daphnia were considered dead when the heart was found to be in systolic standstill on microscopic examination. Succeeding lots of powder were assayed and their potency determined by relating the median length of life of daphnia to 2.22 hours, which is one unit. Twenty assays of 10 animals each were used on each lot of powder.‡‡The authors wish to thank Dr. J. F. A.,McManus of the Department of Pathology for a pathologic report on the tissues, and Mr. James Thomas and Mrs. Bobby E. Teague for technical assistance.

1950 ◽  
Vol 39 (2) ◽  
pp. 91-94 ◽  
Author(s):  
Adoline S. Perdue ◽  
Frances Bell ◽  
W.R. Starnes ◽  
Philip Hitchcock ◽  
R.S. Teague
Keyword(s):  
Daphnia Magna ◽  
Aqueous Extract ◽  
Microscopic Examination ◽  
Chronic Toxicity ◽  
Technical Assistance ◽  
Median Length ◽  
Acute And Chronic Toxicity ◽  
Length Of Life ◽  
Powdered Drug
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