LC50 and bioaccumulation of Cd in different life stages of Artemia urmiana

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Abstract

This study was conducted in vitro to assess lethality, LC50 and the possibility of bioaccumulation of
cadmium in various life stages of Artemia urmiana. Artemia is highly used in aquaculture hence the
response of the organisms to pollutants, such as cadmium regarding the increase in environmental
pollution is of high importance. This experiment was performed in Faculty of Marine science and
Technology, Islamic Azad University and Atomic Energy Organization of Iran in 2009. In the first
stage, smaller than 1day naupliis were exposed to 10 different concentrations from 0 to 250mg/l Cd.
LC50 of Cd in 24h of A. urmiana exposure was 189.33mg/L. Next, the accumulations of Cd in 5, 10,
15 and 20mg/l Cd were examined in 1, 5, 11 and 17 days of Artemia urmiana life. The results showed
that Artemia urmiana has the ability of accumulation of cadmium and the accumulation level depends
upon the concentration of the cadmium in the environment as well as different living periods of
Artemia. We found that increasing the concentration of cadmium in the environment increases its
accumulation in Artemia. There was a significant difference in accumulation of Cd between 5mg/l Cd
(0.267ppm) and 20mg/l Cd (0.364ppm) in the first day of A. urmiana life (P

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Iranian Scientific Fisheries Journal
Volume 20, Issue 1
September and October 2011
Pages 53-64

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