| Title: |
Assessment of Seasonal Changes of the Oxidative Status of Red Mullet Mullus barbatus L. (Actinopterygii: Mullidae) from the Bulgarian Black Sea Coastal Area. |
| Authors: |
Tsvetanova, Elina R., Alexandrova, Albena V., Georgieva, Almira P., Andreeva, Madlena N., Chipev, Nesho H. |
| Source: |
Acta Zoologica Bulgarica; Jun2024, Vol. 76 Issue 2, p235-239, 5p |
| Subject Terms: |
MARINE ecosystem health, SEASONS, ENVIRONMENTAL risk assessment, ACTINOPTERYGII, BIOINDICATORS, SUPEROXIDE dismutase, ECOSYSTEMS |
| Abstract: |
Oxidative stress (OS) in aquatic organisms is associated with pressures within the marine environment by both anthropogenic and natural factors like pollution, climate change, ecological interactions, etc. These pressures can induce irreversible changes in the organism’s status and health influencing communities and ecosystems as well. Red mullet is a widely distributed and commercially important demersal fish species in the Black Sea. This makes it a promising bioindicator for the state of the marine environment and ecosystem health. This study aimed to investigate the effect of seasonal variations in the marine environment on OS in red mullet from four sites on the Bulgarian Black Sea coast – Kavarna, Kamchiya, St. Vlas and Sozopol. Most of the measured OS biomarkers displayed seasonal variations in the two studied fish organs – liver and gills. In autumn, higher lipid peroxidation levels and activities of superoxide dismutase (SOD), catalase (CAT), and glutathione-S-transferase (GST) were presented in the liver of fish from all studied sites. In gills, higher activity of SOD, CAT, GST, and acetylcholinesterase were measured in the summer. In conclusion, the significant local variability of the sea environment quality induced different levels of OS in autumn in the fish liver and in summer in the gills for all studied sites. The measured seasonal fluctuations in the red mullet’s OS biomarkers can be successfully used for biomonitoring and environmental marine risk assessment. [ABSTRACT FROM AUTHOR] |
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| Database: |
Complementary Index |
