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Effects of non-steroidal gonadal factors on LH secretion in female common carp during the reproductive cycle

Author

Listed:
  • J. Chyb

    (Department of Ichthyobiology and Fisheries, University of Agriculture in Krakow, Krakow, Poland)

  • T. Mikolajczyk

    (Department of Ichthyobiology and Fisheries, University of Agriculture in Krakow, Krakow, Poland)

  • M. Sokolowska-Mikolajczyk

    (Department of Ichthyobiology and Fisheries, University of Agriculture in Krakow, Krakow, Poland)

  • M. Socha

    (Department of Ichthyobiology and Fisheries, University of Agriculture in Krakow, Krakow, Poland)

  • P. Szczerbik

    (Department of Ichthyobiology and Fisheries, University of Agriculture in Krakow, Krakow, Poland)

  • D. Biedroń

    (Department of Ichthyobiology and Fisheries, University of Agriculture in Krakow, Krakow, Poland)

  • M. Dębowska

    (Department of Ichthyobiology and Fisheries, University of Agriculture in Krakow, Krakow, Poland)

  • M. Kasiuk

    (Department of Ichthyobiology and Fisheries, University of Agriculture in Krakow, Krakow, Poland)

  • J. Madej

    (Department of Ichthyobiology and Fisheries, University of Agriculture in Krakow, Krakow, Poland)

  • E. Podczerwińska

    (Department of Ichthyobiology and Fisheries, University of Agriculture in Krakow, Krakow, Poland)

  • M. Adamek

    (Department of Ichthyobiology and Fisheries, University of Agriculture in Krakow, Krakow, Poland)

  • P. Epler

    (Department of Ichthyobiology and Fisheries, University of Agriculture in Krakow, Krakow, Poland)

Abstract

The aim of this study was to evaluate the effects of recombinant human inhibin A, recombinant human activin A and desteroidized ovarian extract on LH secretion in vitro and in vivo in female common carp during different stages of reproductive cycle. Inhibin stimulated spontaneous as well as GnRH-stimulated LH release in vivo in fish during gonadal recrudescence. This hormone did not have an influence on spontaneous LH secretion in the periovulatory period, but had a slightly inhibitory effect on GnRH-stimulated LH release in this stage of gonad maturity. Activin decreased spontaneous LH secretion during gonadal recrudescence and increased LH secretion before ovulation, having no effects on GnRH-stimulated LH release during both stages of gonad maturity. The desteroidized ovarian extract failed to modify spontaneous LH secretion, but decreased GnRH-stimulated LH release during recrudescence and especially before ovulation. It is to conclude that these data suggest the differential role of inhibin/activin as substances in the regulation of LH secretion in common carp females.

Suggested Citation

  • J. Chyb & T. Mikolajczyk & M. Sokolowska-Mikolajczyk & M. Socha & P. Szczerbik & D. Biedroń & M. Dębowska & M. Kasiuk & J. Madej & E. Podczerwińska & M. Adamek & P. Epler, 2008. "Effects of non-steroidal gonadal factors on LH secretion in female common carp during the reproductive cycle," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 53(9), pages 398-403.
    • Handle: RePEc:caa:jnlcjs:v:53:y:2008:i:9:id:337-cjas
    DOI: 10.17221/337-CJAS
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    References listed on IDEAS

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    1. P. Szczerbik & T. Mikołajczyk & M. Sokołowska-Mikołajczyk & M. Socha & J. Chyb & P. Epler, 2008. "The influence of cadmium on Prussian carp oocyte maturation, development of eggs and hatching," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 53(1), pages 36-44.
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