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

Identifieur interne : 000746 ( Main/Merge ); précédent : 000745; suivant : 000747

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

Auteurs : Ivan Jaric [Serbie] ; Mirjana Lenhardt [Serbie] ; Jan Pallon [Suède] ; Mikael Elfman [Suède] ; Aleksandar Kalauzi [Serbie] ; Radu Suciu [Roumanie] ; Gor In Cvijanovic [Serbie] ; Torbjörn Ebenhard [Suède]

Source :

Environmental biology of fishes [ 0378-1909 ] ; 2011.

RBID : Pascal:11-0116440

Descripteurs français

Pascal (Inist)
- Cycle évolutif, Elément trace, Nageoire pectorale, Migration, Ratio, Pisces, Acipenser, Huso.
Wicri :
- topic : Migration, Ratio.

English descriptors

KwdEn :
- Life history, Migration, Pectoral fin, Pisces, Ratio, Trace element.

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, 7.08 × 10^-3, 8.98 × 10^-3 and 9.90 × 10^-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.

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Pascal:11-0116440

Le document en format XML

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<author><name sortKey="Jaric, Ivan" sort="Jaric, Ivan" uniqKey="Jaric I" first="Ivan" last="Jaric">Ivan Jaric</name>
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<author><name sortKey="Ebenhard, Torbjorn" sort="Ebenhard, Torbjorn" uniqKey="Ebenhard T" first="Torbjörn" last="Ebenhard">Torbjörn Ebenhard</name>
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<author><name sortKey="Ebenhard, Torbjorn" sort="Ebenhard, Torbjorn" uniqKey="Ebenhard T" first="Torbjörn" last="Ebenhard">Torbjörn Ebenhard</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Life history</term>
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<term>Pisces</term>
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<term>Trace element</term>
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<term>Nageoire pectorale</term>
<term>Migration</term>
<term>Ratio</term>
<term>Pisces</term>
<term>Acipenser</term>
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<front><div type="abstract" xml:lang="en">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, 7.08 × 10<sup>-3</sup>
, 8.98 × 10<sup>-3</sup>
 and 9.90 × 10<sup>-3</sup>
, 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.</div>
</front>
</TEI>
<affiliations><list><country><li>Roumanie</li>
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<li>Suède</li>
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<tree><country name="Serbie"><noRegion><name sortKey="Jaric, Ivan" sort="Jaric, Ivan" uniqKey="Jaric I" first="Ivan" last="Jaric">Ivan Jaric</name>
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<name sortKey="Cvijanovic, Gor In" sort="Cvijanovic, Gor In" uniqKey="Cvijanovic G" first="Gor In" last="Cvijanovic">Gor In Cvijanovic</name>
<name sortKey="Kalauzi, Aleksandar" sort="Kalauzi, Aleksandar" uniqKey="Kalauzi A" first="Aleksandar" last="Kalauzi">Aleksandar Kalauzi</name>
<name sortKey="Lenhardt, Mirjana" sort="Lenhardt, Mirjana" uniqKey="Lenhardt M" first="Mirjana" last="Lenhardt">Mirjana Lenhardt</name>
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<country name="Suède"><noRegion><name sortKey="Pallon, Jan" sort="Pallon, Jan" uniqKey="Pallon J" first="Jan" last="Pallon">Jan Pallon</name>
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<name sortKey="Elfman, Mikael" sort="Elfman, Mikael" uniqKey="Elfman M" first="Mikael" last="Elfman">Mikael Elfman</name>
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<country name="Roumanie"><noRegion><name sortKey="Suciu, Radu" sort="Suciu, Radu" uniqKey="Suciu R" first="Radu" last="Suciu">Radu Suciu</name>
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Insight into Danube sturgeon life history: trace element assessment in pectoral fin rays

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

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri