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A comparison of the spawning migration, genetic and biological parameters of stellate sturgeon from the Volga population in 1985 and 1996

  • Animal Genetics
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Abstract

The dynamics of changes in several genetic and biological parameters of the Volga stellate sturgeon during the spawning runs of 1985 and 1996 were studied by electrophoresis and morphometry and compared. The dynamics of changes in genetic diversity of the running spawners is repeated in many respects over 11 years, suggesting that the intrapopulation diversity is maintained in time. The among-sample diversity of late spring stellate sturgeon, whose spawners are used in hatchery, decreased twofold. Along with decreases in body length and weight and mean age, the females displayed increased heterozygosities and genotype diversity index at LDH3 and PGM1 loci, while the males displayed a statistically significant decrease in body length. During the period in question, the heterozygosity at EST2 locus significantly decreased. The changes observed are connected with the artificial reproduction and non-rational fishing. Preservation of genetic diversity in stellate sturgeon requires that the specific features of the structure and ecology of the species reporduced are taken into account.

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Authors and Affiliations

  1. Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow, 119901, Russia

    G. D. Ryabova, K. I. Afanas’ev & G. A. Rubtsova

  2. Research Center for National Fish Resources, Moscow, 107996, Russia

    V. O. Klimonov

  3. Caspian Research Institute of Fish Industry, Astrakhan, 414056, Russia

    G. F. Dovgopol & R. P. Khodorevskaya

Authors
  1. G. D. Ryabova
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  2. V. O. Klimonov
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  3. K. I. Afanas’ev
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  4. G. A. Rubtsova
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  5. G. F. Dovgopol
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  6. R. P. Khodorevskaya
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Additional information

Original Russian Text © G.D. Ryabova, V.O. Klimonov, K.I. Afanas’ev, G.A. Rubtsova, G.F. Dovgopol, R.P. Khodorevskaya, 2006, published in Genetika, 2006, Vol. 42, No. 10, pp. 1406–1414.

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Ryabova, G.D., Klimonov, V.O., Afanas’ev, K.I. et al. A comparison of the spawning migration, genetic and biological parameters of stellate sturgeon from the Volga population in 1985 and 1996. Russ J Genet 42, 1180–1188 (2006). https://doi.org/10.1134/S1022795406100103

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  • DOI: https://doi.org/10.1134/S1022795406100103

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