Home – Home – Jornals – Contemporary Problems of Ecology 2019 number 4

Toxic effects of various concentrations of cobalt, manganese, iron, lead, cadmium and copper on survival, behavioral response of starfish Asterias rubens , and changes in cellular elements of coelomic fluid (CF) in response to exposure to these metals were investigated. The experiments included survival evaluation, evaluation of the righting time, number of cells and cell distribution among different groups. Half-lethal concentrations measured for copper (0.98 ± 0.16 µM), lead (9.6 ± 0.4 µM) and cadmium (15.1 ± 0.96 µM). Exposure of these metals leads to a significant righting time growth. Number of cells circulating in CF increased under lead, cadmium and copper exposure, under the highest doses of cobalt, manganese and iron. Exposure to Cu²⁺, Cd²⁺, Pb²+ resulted in an increase in the proportion of agranulocytes, Co²⁺, Mn²⁺ and Fe³⁺ leads to an increase in the percentage of red amoebocytes (granulocytes) in the CF. It was shown that Cu²⁺, Cd²⁺, Mn²⁺ and Co²⁺ are dose-dependent bioconcentrated in bodies of Asterias rubens .