Scientific publications

И.Н. Бахмет, Д.А. Екимов.
Оценка влияния никеля на сердечную активность мидии Mytilus edulis Linnaeus, 1758
I.N. Bakhmet, D.A. Ekimov. Effect of nikel ions on cardiac activity in the blue mussel Mytilus edulis Linnaeus, 1758 // Transactions of Karelian Research Centre of Russian Academy of Science. No 11. Experimental biology. 2020. P. 64–69
Keywords: blue mussels; Mytilus edulis Linnaeus; 1758; heart rate; plethysmogram; nickel ions
The original device and firmware “Blue mussel-7T” was designed for distant continuous recording of mollusk cardiac activity. This device allows estimating the effect of nickel ions
(NiCl2×6H2O in 500 µg/l concentration) on the heart rate in blue mussels Mytilus edulis Linnaeus, 1758. A significant decrease in the heart rate 20 minutes after the addition of the heavy metal was shown. Besides, the cross-group variance of the parameter increased sharply (20–100‑fold) after the same time interval. At the same time, individual variance of the heart rate rose 3–10‑fold as soon as 1 minute after nickel had been added. The increase in heart rate variance probably testifies to a stressful nature of the impact. It is suggested to use three indices in toxicological experiments estimating mollusk cardiac responses to heavy metals: heart rate change, individual and cross-group variances of heart rate indices. The new device and firmware proved to have potential for experimenting with the estimation of mollusk cardiac responses to impacts.
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Last modified: December 5, 2020