Content of essential microelements in Mytilus galloprovincialis on the southwest coast of Crimea

by

L.L. Smyrnova1, N. S. Chelyadina2

1Institute of Natural and Technical Systems, RF, Sevastopol, Lenin St., 28

2FRC “A.O. Kovalevsky Institute of Biology of the Southern Seas of the Russian Academy of

 Sciences”, RF, Sevastopol, Nakhimov Av., 2

E-mail: inik48@mail.ru

DOI: 10.33075/2220-5861-2025-1-71-78

UDC 546.56:594.124:551.35:639.4 (262.5)                    

EDN: https://elibrary.ru/dzhrfy

Abstract:

The bivalve mollusks M. galloprovincialis are filter-feeding organisms and in the process of life actively accumulate various chemical elements contained in seawater. The results of study of the content of essential microelements in the soft tissue, byssus and intervalve fluid of mussels with a shell size of 54.01±2.9 mm are presented. The group of essential microelements Fe, Cu, I, Zn Cr, Mo, Se belongs to the catalysts of biochemical processes and metabolism and replenishes microelement deficiency in humans. Their concentration in the test tissues was determined by mass spectrometry with inductively coupled plasma using a Plasma Quant MS Elite device. The important role of byssus as a bioaccumulator of essential microelements in the coastal waters of the western coast of Crimea is shown. The content of essential microelements in the byssus decreased in the following sequence: Cu → Mo → I → Fe → Cr → Zn → Se. It accumulated up to 68% Cr, Fe and 80 – 82% Cu, Mo and I of their total content in the tissues of M. galloprovincialis. In the soft tissues of mussels, Zn accumulated in the largest quantities, up to 53% of its total content in the studied tissues. The intervalve fluid, which washes the soft tissues, is closely connected with the excretory system (kidneys) of mussels and is depleted in essential microelements. However, in it, as in the soft tissues of mussels, an increased concentration of Se was determined from 3.1 to 4.4 μg/g dry. weight. In addition, only Se was distributed in equal proportions up to 30–36% between the soft tissues of mussels, the byssus and the intervalve fluid.

Keywords: mussel M. galloprovincialis, essential microelements, bioaccumulation, byssus, soft tissue, intervalve fluid

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