Interacting Effects of pH Acclimation, pH, and Heavy Metals on Acute and Chronic Toxicity to Ceriodaphnia dubia (Cladocera)

1990 ◽  
Vol 10 (2) ◽  
pp. 225 ◽  
Author(s):  
Scott E. Belanger ◽  
Donald S. Cherry
Keyword(s):  
Heavy Metals ◽  
Chronic Toxicity ◽  
Ceriodaphnia Dubia ◽  
Acute And Chronic Toxicity ◽  
Effects Of Ph

scholarly journals Comparison of Joint Effect of Acute and Chronic Toxicity for Combined Assessment of Heavy Metals on Photobacterium sp.NAA-MIE

2021 ◽  
Vol 18 (12) ◽  
pp. 6644
Author(s):  
Nur Adila Adnan ◽  
Mohd Izuan Effendi Halmi ◽  
Siti Salwa Abd Gani ◽  
Uswatun Hasanah Zaidan ◽  
Mohd Yunus Abd Shukor
Keyword(s):  
Heavy Metals ◽  
Chronic Toxicity ◽  
Mixture Toxicity ◽  
Joint Effect ◽  
Antagonistic Effect ◽  
Acute Test ◽  
Acute And Chronic Toxicity ◽  
Toxicological Studies ◽  
Luminescence Inhibition ◽  
Toxicity Unit

Predicting the crucial effect of single metal pollutants against the aquatic ecosystem has been highly debatable for decades. However, dealing with complex metal mixtures management in toxicological studies creates a challenge, as heavy metals may evoke greater toxicity on interactions with other constituents rather than individually low acting concentrations. Moreover, the toxicity mechanisms are different between short term and long term exposure of the metal toxicant. In this study, acute and chronic toxicity based on luminescence inhibition assay using newly isolated Photobacterium sp.NAA-MIE as the indicator are presented. Photobacterium sp.NAA-MIE was exposed to the mixture at a predetermined ratio of 1:1. TU (Toxicity Unit) and MTI (Mixture Toxic Index) approach presented the mixture toxicity of Hg2+ + Ag+, Hg2+ + Cu2+, Ag+ + Cu2+, Hg2+ + Ag+ + Cu2+, and Cd2+ + Cu2+ showed antagonistic effect over acute and chronic test. Binary mixture of Cu2+ + Zn2+ was observed to show additive effect at acute test and antagonistic effect at chronic test while mixture of Ni2+ + Zn2+ showing antagonistic effect during acute test and synergistic effect during chronic test. Thus, the strain is suitable and their use as bioassay to predict the risk assessment of heavy metal under acute toxicity without abandoning the advantage of chronic toxicity extrapolation.

ACUTE AND CHRONIC TOXICITY OF NICKEL TO A CLADOCERAN (CERIODAPHNIA DUBIA) AND AN AMPHIPOD (HYALELLA AZTECA)

2004 ◽  
Vol 23 (3) ◽  
pp. 691 ◽  
Author(s):  
James Keithly ◽  
John A. Brooker ◽  
David K. DeForest ◽  
Benjamin K. Wu ◽  
Kevin V. Brix
Keyword(s):  
Chronic Toxicity ◽  
Hyalella Azteca ◽  
Ceriodaphnia Dubia ◽  
Acute And Chronic Toxicity

Daphnia magna and Ceriodaphnia dubia Have Similar Sensitivity in Standard Acute and Chronic Toxicity Tests

2021 ◽  
Author(s):  
Kristin A. Connors ◽  
Jessica L. Brill ◽  
Teresa Norberg‐King ◽  
Mace G. Barron ◽  
Greg Carr ◽  
...  
Keyword(s):  
Daphnia Magna ◽  
Chronic Toxicity ◽  
Ceriodaphnia Dubia ◽  
Toxicity Tests ◽  
Acute And Chronic Toxicity
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