TY  - CONF
AU  - Višnjić Jeftić, Željka
AU  - Raskovic, Bozidar
AU  - Poleksic, Vesna
AU  - Subotić, Srđan
AU  - Lenhardt, Mirjana
PY  - 2023
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1745
AB  - Pontic shad (Alosa immaculata) is an anadromous species that lives in the Black Sea and Sea of Azov
and migrates into the Danube, Don and other rivers to spawn. It is still economically important fish
species in the Danube River. As the North-Western part of the Black Sea is heavily polluted
investigation was performed to determine heavy metal and element accumulation in muscle tissue of
Pontic shad as well as to record the level of histopathological changes. Pontic shad specimens were
caught on 863 river kilometer of the Danube and the first investigation was performed during 2007
and repeated one decade later in the period 2017-2019.
Element analysis was performed by inductively-coupled plasma – optic emission spectroscopy (ICPOES).
In both sampling periods, only concentrations of arsenic (As), copper (Cu), iron (Fe),
magnesium (Mg), strontium (Sr), and zinc (Zn) were above detection limit. Higher concentrations of
As, Cu, and Zn were detected in 2007, while higher concentrations of Fe, Mg, and Sr were measured
in 2019. Differences in concentrations of these elements, between sampling periods, were
statistically significant.
The gills of sampled fish were assessed using histopathology as a marker of general fish health state,
using semi-quantitative scoring system. The histopathological results revealed different pattern of
histopathological alterations in the gills of fish sampled during two distinct time periods. According to
the method used, there were no difference in total gill histopathological index, but alterations were
specific for fish sampled at two time points. Hyperemia and hyperplasia of respiratory epithelium
dominated in fish sampled at the year 2007, while necrosis of branchial tissue prevailed in fish
sampled a decade later.
PB  - Austrian Commitee Danube Research
C3  - 144th IAD Conference 2023, Krems, Austria
T1  - Difference in element accumulation and histopathology of Pontic shad (Alosa immaculata) migrants caught in the Danube River in interval of one decade
SP  - 33
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_1745
ER  - 

@conference{
author = "Višnjić Jeftić, Željka and Raskovic, Bozidar and Poleksic, Vesna and Subotić, Srđan and Lenhardt, Mirjana",
year = "2023",
abstract = "Pontic shad (Alosa immaculata) is an anadromous species that lives in the Black Sea and Sea of Azov
and migrates into the Danube, Don and other rivers to spawn. It is still economically important fish
species in the Danube River. As the North-Western part of the Black Sea is heavily polluted
investigation was performed to determine heavy metal and element accumulation in muscle tissue of
Pontic shad as well as to record the level of histopathological changes. Pontic shad specimens were
caught on 863 river kilometer of the Danube and the first investigation was performed during 2007
and repeated one decade later in the period 2017-2019.
Element analysis was performed by inductively-coupled plasma – optic emission spectroscopy (ICPOES).
In both sampling periods, only concentrations of arsenic (As), copper (Cu), iron (Fe),
magnesium (Mg), strontium (Sr), and zinc (Zn) were above detection limit. Higher concentrations of
As, Cu, and Zn were detected in 2007, while higher concentrations of Fe, Mg, and Sr were measured
in 2019. Differences in concentrations of these elements, between sampling periods, were
statistically significant.
The gills of sampled fish were assessed using histopathology as a marker of general fish health state,
using semi-quantitative scoring system. The histopathological results revealed different pattern of
histopathological alterations in the gills of fish sampled during two distinct time periods. According to
the method used, there were no difference in total gill histopathological index, but alterations were
specific for fish sampled at two time points. Hyperemia and hyperplasia of respiratory epithelium
dominated in fish sampled at the year 2007, while necrosis of branchial tissue prevailed in fish
sampled a decade later.",
publisher = "Austrian Commitee Danube Research",
journal = "144th IAD Conference 2023, Krems, Austria",
title = "Difference in element accumulation and histopathology of Pontic shad (Alosa immaculata) migrants caught in the Danube River in interval of one decade",
pages = "33",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_1745"
}

Višnjić Jeftić, Ž., Raskovic, B., Poleksic, V., Subotić, S.,& Lenhardt, M.. (2023). Difference in element accumulation and histopathology of Pontic shad (Alosa immaculata) migrants caught in the Danube River in interval of one decade. in 144th IAD Conference 2023, Krems, Austria
Austrian Commitee Danube Research., 33.
https://hdl.handle.net/21.15107/rcub_rimsi_1745

Višnjić Jeftić Ž, Raskovic B, Poleksic V, Subotić S, Lenhardt M. Difference in element accumulation and histopathology of Pontic shad (Alosa immaculata) migrants caught in the Danube River in interval of one decade. in 144th IAD Conference 2023, Krems, Austria. 2023;:33.
https://hdl.handle.net/21.15107/rcub_rimsi_1745 .

Višnjić Jeftić, Željka, Raskovic, Bozidar, Poleksic, Vesna, Subotić, Srđan, Lenhardt, Mirjana, "Difference in element accumulation and histopathology of Pontic shad (Alosa immaculata) migrants caught in the Danube River in interval of one decade" in 144th IAD Conference 2023, Krems, Austria (2023):33,
https://hdl.handle.net/21.15107/rcub_rimsi_1745 .