Radiation induced heat shocked gynogenesis in mrigal Cirrhinus mrigala Hamilton


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Authors

  • Md. Younus Mia Freshwater Station, Bangladesh Fisheries Research Institute, Mymensingh-2201, Bangladesh
  • Md. Shahidul Islam Freshwater Station, Bangladesh Fisheries Research Institute, Mymensingh-2201, Bangladesh
  • Md. Saifuddin Shah Freshwater Station, Bangladesh Fisheries Research Institute, Mymensingh-2201, Bangladesh

Abstract

Gynogenesis was induced in mrigal Cirrhinus mrigala, by subjecting eggs fertilizedwith UV-irradiated sperm through heat shock. The sperm was inactivatedthrough UV-irradiation with 580 nw/cm^ at an exposure of 2 minutes at a constantdistance of 13.5 cm lamp-sperm. Gynogenetic diploidy was induced by restoringsecond polar body by sub-lethal heat shock at 39 to 40°C for 1 to 2 minutes,initiated 4 minutes after fertilization. Heat-shock regimes with the constantdose of UV-irradiation were optimized at 39°C for 2 minutes, applied 4minutes after fertilization. The triploids in the controls were induced at low ratesranging from 0 to 70% and haploids ranged from 50 to 100% with 0 to 8% survivalrates. Gynogenetics had poor survival rates which varied from 2 to 50% of whichsome individuals even could be triploids or normal diploids due to presumedinappropriate heat-shock and UV-irradiation. Survival rate of 30 to 60% wasrecorded in the control

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Author Biographies

  • Md. Younus Mia, Freshwater Station, Bangladesh Fisheries Research Institute, Mymensingh-2201, Bangladesh
    Freshwater Station, Bangladesh Fisheries Research Institute, Mymensingh-2201,Bangladesh
  • Md. Shahidul Islam, Freshwater Station, Bangladesh Fisheries Research Institute, Mymensingh-2201, Bangladesh
    Freshwater Station, Bangladesh Fisheries Research Institute, Mymensingh-2201,Bangladesh
  • Md. Saifuddin Shah, Freshwater Station, Bangladesh Fisheries Research Institute, Mymensingh-2201, Bangladesh
    Freshwater Station, Bangladesh Fisheries Research Institute, Mymensingh-2201,Bangladesh

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Issue

Vol. 48 No. 4 (2001)

Section

Articles

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How to Cite

Mia, M. Y., Islam, M. S., & Shah, M. S. (2011). Radiation induced heat shocked gynogenesis in mrigal Cirrhinus mrigala Hamilton. Indian Journal of Fisheries, 48(4), 353-359. https://epubs.icar.org.in/index.php/IJF/article/view/8382