Indicators of Cardiac Activity and Oxidative Stress in the Mollusk Anodonta cygnea Under Short-Term Salt Test Load as Biomarkers for Assessing the State of the Organism and the Quality of the Environment

The dynamics of cardiac activity and biomarkers of oxidative stress in the gills of freshwater bivalve mollusks Anodonta cygnea during a short-term (1 h) increase in water salinity to 3‰ and its subsequent recovery to the initial level have been studied. It is shown that changes in salinity are acco...

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Bibliographic Details
Published in:Inland water biology 2021-11, Vol.14 (6), p.739-746
Main Authors: Kholodkevich, S. V., Chuiko, G. M., Sharov, A. N., Kuznetsova, T. V., Pesnya, D. S.
Format: Article
Language:English
Subjects:
Anodonta cygnea
Biochemical markers
Biodiversity
Biological stress
Biomarkers
Biomedical and Life Sciences
Catalase
Ecological Physiology and Biochemistry of Hydrobionts
Freshwater
Freshwater & Marine Ecology
Freshwater molluscs
Freshwater mollusks
Freshwater organisms
Geoecology/Natural Processes
Gills
Glutathione
Glutathione transferase
Heart rate
Inland water environment
Latency
Life Sciences
Malondialdehyde
Mollusca
Mollusks
Oxidative stress
Salinity
Salinity effects
Water salinity
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Summary:The dynamics of cardiac activity and biomarkers of oxidative stress in the gills of freshwater bivalve mollusks Anodonta cygnea during a short-term (1 h) increase in water salinity to 3‰ and its subsequent recovery to the initial level have been studied. It is shown that changes in salinity are accompanied by a rapid synchronous increase in the heart rate (HR) of mollusks with their subsequent return to the initial level after the return of salinity to the initial level. Changes in biochemical markers of the state of oxidative stress (activity of catalase, glutathione-S-transferase, and malondialdehyde content) in mollusks exhibit a similar pattern. However, the biochemical response has a latency period of up to 60 min with an increase in salinity and 15 min with its return to the initial level. The data of the study indicate that this mode of exposure to salinity does not adversely affect the mollusks. Therefore, it can be used as a test functional load in assessing the health of mollusks and determining the quality of their environment.
ISSN:1995-0829
1995-0837
DOI:10.1134/S1995082921060067