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Effects of Aroclor 1254 on LH and 17,20β-P secretion in female Prussian carp (Carassius gibelio Bloch) in the spawning season

Author

Listed:
  • M. Socha

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

  • M. Sokołowska-Mikołajczyk

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

  • P. Szczerbik

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

  • J. Chyb

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

  • P. Epler

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

Abstract

The effects of Aroclor 1254 on the secretion of luteinizing hormone (LH) and 17,20β-dihydroxy-4-pregnen-3-one (17,20β-P) in female Prussian carp (Carassius gibelio Bloch) at the time of their natural spawning were determined. Aroclor 1254 at doses of 0.01, 0.1, and 1 mg/kg body weight was dissolved in 500 ml of oil and was administered three times intraperitoneally or rectally to female Prussian carp every 24 h for three days. Blood samples were collected after 3 days of Aroclor 1254 administration to determine the LH and 17,20β-P concentrations using ELISA. At 6, 12, and 24 h after injection of gonadotropin-releasing hormone analogue (GnRH-A) blood samples were collected for stimulated LH secretion determination. Aroclor 1254 administered intraperitoneally (0.1 and 1 mg/kg)and rectally (0.01 and 1 mg/kg) significantly increased spontaneous LH secretion. In the case of GnRH-A-stimulated LH release, Aroclor 1254 (administered intraperitoneally only) at concentrations of 0.1 and 1 mg/kg significantly decreased gonadotropin release. The intraperitoneal injections of the lowest tested concentration of Aroclor 1254 also significantly decreased 17,20β-P secretion. The results show that Aroclor 1254 can affect the reproductive system of Prussian carp by changing the secretion of two very important hormones, LH and 17,20β-P, at the time of natural spawning.

Suggested Citation

  • M. Socha & M. Sokołowska-Mikołajczyk & P. Szczerbik & J. Chyb & P. Epler, 2013. "Effects of Aroclor 1254 on LH and 17,20β-P secretion in female Prussian carp (Carassius gibelio Bloch) in the spawning season," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 58(8), pages 375-380.
    • Handle: RePEc:caa:jnlcjs:v:58:y:2013:i:8:id:6904-cjas
    DOI: 10.17221/6904-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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