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Insight into Danube sturgeon life history: trace element assessment in pectoral fin rays

Jaric, Ivan; Lenhardt, Mirjana; Pallon, Jan LU ; Elfman, Mikael LU ; Kalauzi, Aleksandar; Suciu, Radu; Cvijanovic, Gorcin and Ebenhard, Torbjorn (2011) In Environmental Biology of Fishes 90(2). p.171-181
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... (More)
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. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Acipenser, Huso, Migration patterns, Pectoral fin microchemistry, Sr:Ca, ratio, Nuclear microprobe
in
Environmental Biology of Fishes
volume
90
issue
2
pages
171 - 181
publisher
Springer
external identifiers
  • wos:000286392400006
  • scopus:78751539708
ISSN
0378-1909
DOI
10.1007/s10641-010-9728-4
language
English
LU publication?
yes
id
6260ece2-75fb-4817-becf-cab75957ba7f (old id 1882613)
date added to LUP
2011-03-30 12:08:40
date last changed
2017-03-05 04:00:12
@article{6260ece2-75fb-4817-becf-cab75957ba7f,
  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.},
  author       = {Jaric, Ivan and Lenhardt, Mirjana and Pallon, Jan and Elfman, Mikael and Kalauzi, Aleksandar and Suciu, Radu and Cvijanovic, Gorcin and Ebenhard, Torbjorn},
  issn         = {0378-1909},
  keyword      = {Acipenser,Huso,Migration patterns,Pectoral fin microchemistry,Sr:Ca,ratio,Nuclear microprobe},
  language     = {eng},
  number       = {2},
  pages        = {171--181},
  publisher    = {Springer},
  series       = {Environmental Biology of Fishes},
  title        = {Insight into Danube sturgeon life history: trace element assessment in pectoral fin rays},
  url          = {http://dx.doi.org/10.1007/s10641-010-9728-4},
  volume       = {90},
  year         = {2011},
}