Toxicity of Ammonia to Four Species of Marine Amphipods
Abstract
The toxicity of ammonia in seawater to four species of marine amphipods was measured by direct exposure (in the absence of sediment) under controlled conditions. Sediment-dwelling Rhepoxvnius abronius and Eohaustorius estuarius and tube-building Ampelisca abdita and Grandidierella japonica were exposed in 96-h acute bioassays in static chambers. Samples of water from test chambers were analyzed for total ammonia. Unionized ammonia concentrations were then calculated based on the temperature, salinity, and pH of the seawater in the treatments. Mortality data was analyzed to determine the LC50 of unionized ammonia for each of the four amphipod species. Of the species tested, Ampelisca abdita showed the greatest sensitivity to unionized ammonia with an LC50 of 0.83 mg/L. LC50s for Rhepoxvnius abronius and Eohaustorius estuarius were 1.59 mg/L and 2.49 mg/L unionized ammonia …
Recommended Citation
N. P. Kohn et al., "Toxicity of Ammonia to Four Species of Marine Amphipods,", Jan 1992.
Meeting Name
13 th Annual Meeting Society of Environmental Toxicology and Chemistry
Department(s)
Biological Sciences
Document Type
Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Publication Date
1992
