Impact of wastewater discharges on fatty acid profiles on roach (Rutilus rutilus) from Danube River, Belgrade
2023
Тип документа:
Конференцијски прилог (Објављена верзија)
,
© 2023 by the Austrian Committee - International Association for Danube Research
Метаподаци
Приказ свих података о документуАпстракт:
Pollution of freshwater ecosystems by discharges of untreated municipal wastewater represents a
major threat for aquatic organisms and thus human health. Serbia discharges wastewater without
previous treatment. In recent years, studies have shown that fatty acids are sensitive to alterations in
organism homeostasis, supporting their use for biomarkers of toxicant exposure. Fish species are an
important source of biologically valuable proteins, fats, fat-soluble vitamins, and n-3polyunsaturated
fatty acids. The purpose of this study was to investigate the diferences of fatty acid composition in
fish from urban sites of the Danube River. A total number of eight specimens of roach (Rutilus rutilus)
were collected from two localities - Višnjica, which is exposed to the discharge of the largest
wastewater collector in the city of Belgrade and Veliko Ratno Ostrvo, which is at the confluence of
Danube and Sava River, and is considered as control location. Fatty acid methyl esters (FAMEs) were
analyzed using gas chromatography–mass spectrometry (GC-MS). A total of 28 fatty acids were found
in the muscle tissue of the studied fish species. The results showed no significant differences in fatty
acid profile between polluted and control localities. All examined fish species contained essential
fatty acids (EPA, ALA, DHA) with DHA levels significantly higher in specimens from control site. The
proportion of total saturated fatty acids (SFAs) and monounsaturated fatty acids (MUFAs) was almost
the same while polyunsaturated fatty acids (PUFAs) were higher in control specimens. It is shown by
previous studies that the main reason of changes in PUFAs is that they could be oxidized under
oxidative stress conditions induced by metals or organic compounds. Even though anthropogenic
load exerted on Višnjica locality has not significantly affected the fish fatty acid profile, changes in
PUFAs indicated the presence of some xenobiotics in their environment.
Кључне речи:
roach; impact of pollution; fatty acids; urban area; Danube RiverФинансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200007 (Универзитет у Београду, Институт за биолошка истраживања 'Синиша Станковић') (RS-MESTD-inst-2020-200007)
У:
- Conference Book: 44th IAD conference: Tackling Present & Future Environmental Challenges of a European Riverscape; 2023 Feb 6-9; Krems, Austria. Austrian Committee - International Association for Danube Research; 2023. p. 31.