Sturgeon populations in the Danube River have experienced severe decline during the last several decades, mostly due to the poorly regulated fishery, river fragmentation and water pollution. This study focuses on gaining better understanding of sturgeon life history primarily by addressing the assessment of microelement accumulation in sturgeon pectoral fin rays, especially of strontium and calcium, as a method that can reveal migration patterns of anadromous sturgeons. Analysis was performed on pectoral fin samples of three anadromous Danube sturgeon species (beluga, Russian sturgeon and stellate sturgeon) by the use of a Nuclear Microprobe technique. The most frequent pattern in analyzed samples was represented by a low Sr:Ca ratio in the innermost annuli, followed by an increased ratio in the middle annuli segment, and often with a decreased ratio in the outermost annuli. Probability density estimate has revealed three distinguished maxima of the Sr: Ca ratio, 7.08x10(-3), 8.98x10(-...3) and 9.90x10(-3), which might correspond, respectively, to fresh, brackish and saltwater. Although the analysis of the Sr: Ca ratio in sturgeon pectoral fin rays has revealed changes that might indicate probable migration between habitats with different water salinity, further studies are needed for improvement of this method. This study represents the first analysis of this kind that was conducted on sturgeon species from the Black Sea basin.
Keywords:
Sr:Ca ratio / Pectoral fin microchemistry / Nuclear microprobe / Migration patterns / Huso / Acipenser
Source:
Environmental Biology of Fishes, 2011, 90, 2, 171-181
TY - JOUR
AU - Jarić, Ivan
AU - Lenhardt, Mirjana
AU - Pallon, Jan
AU - Elfman, Mikael
AU - Kalauzi, Aleksandar
AU - Suciu, Radu
AU - Cvijanović, Gorčin
AU - Ebenhard, Torbjorn
PY - 2011
UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/451
AB - Sturgeon populations in the Danube River have experienced severe decline during the last several decades, mostly due to the poorly regulated fishery, river fragmentation and water pollution. This study focuses on gaining better understanding of sturgeon life history primarily by addressing the assessment of microelement accumulation in sturgeon pectoral fin rays, especially of strontium and calcium, as a method that can reveal migration patterns of anadromous sturgeons. Analysis was performed on pectoral fin samples of three anadromous Danube sturgeon species (beluga, Russian sturgeon and stellate sturgeon) by the use of a Nuclear Microprobe technique. The most frequent pattern in analyzed samples was represented by a low Sr:Ca ratio in the innermost annuli, followed by an increased ratio in the middle annuli segment, and often with a decreased ratio in the outermost annuli. Probability density estimate has revealed three distinguished maxima of the Sr: Ca ratio, 7.08x10(-3), 8.98x10(-3) and 9.90x10(-3), which might correspond, respectively, to fresh, brackish and saltwater. Although the analysis of the Sr: Ca ratio in sturgeon pectoral fin rays has revealed changes that might indicate probable migration between habitats with different water salinity, further studies are needed for improvement of this method. This study represents the first analysis of this kind that was conducted on sturgeon species from the Black Sea basin.
PB - Springer, New York
T2 - Environmental Biology of Fishes
T1 - Insight into Danube sturgeon life history: trace element assessment in pectoral fin rays
EP - 181
IS - 2
SP - 171
VL - 90
DO - 10.1007/s10641-010-9728-4
ER -
@article{
author = "Jarić, Ivan and Lenhardt, Mirjana and Pallon, Jan and Elfman, Mikael and Kalauzi, Aleksandar and Suciu, Radu and Cvijanović, Gorčin and Ebenhard, Torbjorn",
year = "2011",
abstract = "Sturgeon populations in the Danube River have experienced severe decline during the last several decades, mostly due to the poorly regulated fishery, river fragmentation and water pollution. This study focuses on gaining better understanding of sturgeon life history primarily by addressing the assessment of microelement accumulation in sturgeon pectoral fin rays, especially of strontium and calcium, as a method that can reveal migration patterns of anadromous sturgeons. Analysis was performed on pectoral fin samples of three anadromous Danube sturgeon species (beluga, Russian sturgeon and stellate sturgeon) by the use of a Nuclear Microprobe technique. The most frequent pattern in analyzed samples was represented by a low Sr:Ca ratio in the innermost annuli, followed by an increased ratio in the middle annuli segment, and often with a decreased ratio in the outermost annuli. Probability density estimate has revealed three distinguished maxima of the Sr: Ca ratio, 7.08x10(-3), 8.98x10(-3) and 9.90x10(-3), which might correspond, respectively, to fresh, brackish and saltwater. Although the analysis of the Sr: Ca ratio in sturgeon pectoral fin rays has revealed changes that might indicate probable migration between habitats with different water salinity, further studies are needed for improvement of this method. This study represents the first analysis of this kind that was conducted on sturgeon species from the Black Sea basin.",
publisher = "Springer, New York",
journal = "Environmental Biology of Fishes",
title = "Insight into Danube sturgeon life history: trace element assessment in pectoral fin rays",
pages = "181-171",
number = "2",
volume = "90",
doi = "10.1007/s10641-010-9728-4"
}
Jarić, I., Lenhardt, M., Pallon, J., Elfman, M., Kalauzi, A., Suciu, R., Cvijanović, G.,& Ebenhard, T.. (2011). Insight into Danube sturgeon life history: trace element assessment in pectoral fin rays. in Environmental Biology of Fishes
Springer, New York., 90(2), 171-181.
https://doi.org/10.1007/s10641-010-9728-4
Jarić I, Lenhardt M, Pallon J, Elfman M, Kalauzi A, Suciu R, Cvijanović G, Ebenhard T. Insight into Danube sturgeon life history: trace element assessment in pectoral fin rays. in Environmental Biology of Fishes. 2011;90(2):171-181.
doi:10.1007/s10641-010-9728-4 .
Jarić, Ivan, Lenhardt, Mirjana, Pallon, Jan, Elfman, Mikael, Kalauzi, Aleksandar, Suciu, Radu, Cvijanović, Gorčin, Ebenhard, Torbjorn, "Insight into Danube sturgeon life history: trace element assessment in pectoral fin rays" in Environmental Biology of Fishes, 90, no. 2 (2011):171-181,
https://doi.org/10.1007/s10641-010-9728-4 . .
