Evaluating the Bioaccumulation of Nickel and Vanadium and their effects on the Growth of Artemia urmiana and A. franciscana

Although there is growing evidence that metals can be toxic to various aquatic species, there is still insufficient knowledge to integrate this information in environmental risk assessment procedures. In this study, we have investigated bioaccumulation and effects of nickel and vanadium on mortality and growth of Artemia urmiana and Artemia franciscana. The in ۲۴ h of A. urmiana and A. franciscana exposed to nickel and vanadium were ۰.۰۰۷۲, ۰.۰۱۱۴ mg/l and ۰.۰۱۰۷ and ۰.۰۱۱ mg/l respectively. In growth experiments, the length of animals was considered as growth index. Results indicates that the mean length of animals in (۰.۰۰۱, ۰.۰۰۲ and ۰.۰۰۳ mg/l) Ni and V on first, ۵th, ۷th and ۱۱th days of life significantly decreases in comparison with control groups (p<۰.۰۵).Bioaccumulation of Ni and V in the same concentration, after ۲۴ h in nauplius and also in adults of A. urmiana and A. fransicana were statistically significantly higher than of the control groups (P < ۰.۰۵). Both species accumulate nickel and vanadium in their bodies. However A. urmiana is more resistant to the heavy metals. Results show, nickel is less toxic than vanadium on Artemia.

Keywords:

Nickel , Vanadium , Bioaccumulation , Artemia urmiana , Artemia franciscana