Premium
Acute and chronic toxicity of nickel to a cladoceran ( Ceriodaphnia dubia ) and an amphipod ( Hyalella azteca )
Author(s) -
Keithly James,
Brooker John A.,
Deforest David K.,
Wu Benjamin K.,
Brix Kevin V.
Publication year - 2004
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1897/02-630
Subject(s) - hyalella azteca , ceriodaphnia dubia , chronic toxicity , toxicity , acute toxicity , biology , daphnia magna , cladocera , amphipoda , toxicology , ecotoxicology , crustacean , ecology , medicine
This study evaluated acute and chronic nickel (Ni) toxicity to Ceriodaphnia dubia and Hyalella azteca with the objective of generating information for the development of a biotic ligand model for Ni. Testing with C. dubia was used to evaluate the effect of ambient hardness on Ni toxicity, whereas the larger H. azteca was used to derive lethal body burden information for Ni toxicity. As was expected, acute C. dubia median lethal concentrations (LC50s) for Ni increased with increasing water hardness. The 48‐hLC50s were 81, 148, 261, and 400 μg/L at hardnesses of 50, 113, 161, and 253 mg/L (as CaCO 3 ), respectively. Ceriodaphnia dubia was found to be significantly more sensitive in chronic exposures than other species tested (including other daphnids such as Daphnia magna ); chronic toxicity was less dependent on hardness than was acute toxicity. Chronic 20% effective concentrations (EC20s) were estimated at <3.8, 4.7, 4.0, and 6.9 μg/L at hardnesses of 50, 113, 161, and 253 mg/L, respectively. Testing with H. azteca resulted in a 96‐h LC50 of 3,045 μg/L and a 14‐d EC20 of 61 μg/L at a hardness of 98 mg/L (as CaCO 3 ). Survival was more sensitive than was growth in the chronic study with H. azteca. The 20% lethal accumulation effect level based on measured Ni body burdens was 247 nmol/g wet weight.