Evidence of mitochondrial DNA clones of Siberian sturgeon, Acipenser baerii, within Russian sturgeon, Acipenser gueldenstaedtii, caught in the River Volga
Identifieur interne : 000391 ( Istex/Curation ); précédent : 000390; suivant : 000392Evidence of mitochondrial DNA clones of Siberian sturgeon, Acipenser baerii, within Russian sturgeon, Acipenser gueldenstaedtii, caught in the River Volga
Auteurs : I. Jenneckens [Allemagne] ; J. Meyer [Allemagne] ; L. Debus [Allemagne] ; C. Pitra [Allemagne] ; A. Ludwig [Allemagne]Source :
- Ecology Letters [ 1461-023X ] ; 2000-11-23.
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Abstract
Eleven of 34 sturgeons caught in the River Volga classified morphologically as Acipenser gueldenstaedtii were identified as Acipenser baerii from sequence analysis of the mitochondrial cytochrome‐b gene. The Caspian Sea and its tributaries including the Volga are not native habitats of A. baerii. No A. baerii haplotype was observed in A. gueldenstaedtii from the Sea of Azov or the South Caspian Sea. Genetic contamination of A. gueldenstaedtii with A. baerii or A. baerii hybrids has occurred in the Volga. Crosses and backcrosses of these specimens with native A. gueldenstaedtii resulted in the loss of the morphological diagnostic A. baerii features. These findings are of special concern for conservation and management programmes, as well as for specimen identification for caviar trading control.
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DOI: 10.1111/j.1461-0248.2000.00179.x
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ISTEX:1A7263F55047C5EC3DB0A3F63153CFB75993A951Le document en format XML
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<front><div type="abstract" xml:lang="en">Eleven of 34 sturgeons caught in the River Volga classified morphologically as Acipenser gueldenstaedtii were identified as Acipenser baerii from sequence analysis of the mitochondrial cytochrome‐b gene. The Caspian Sea and its tributaries including the Volga are not native habitats of A. baerii. No A. baerii haplotype was observed in A. gueldenstaedtii from the Sea of Azov or the South Caspian Sea. Genetic contamination of A. gueldenstaedtii with A. baerii or A. baerii hybrids has occurred in the Volga. Crosses and backcrosses of these specimens with native A. gueldenstaedtii resulted in the loss of the morphological diagnostic A. baerii features. These findings are of special concern for conservation and management programmes, as well as for specimen identification for caviar trading control.</div>
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