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KMID : 0383119910390010135
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Journal of Aerospace Medicine
1991 Volume.39 No. 1 p.135 ~ p.142
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The Effects of Positive Radial Acceleration(Gz+) on Offsping in Rats
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Park Jong-Kwan
Whang Myung-Sun
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Abstract
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Many people have concerned making of ratio of male to female, offspring. Environmental factors which have effect on birth of male. offspring were investigated from long year ago. The seasonal
distribution of the sex ratio of live births has already been studied. Flood, long dry have effect on the pH of water. Y-bearing spermatozoa might be particularly subject to dietary influence during early meiotic stages of spermatogenesis or about seven weeks before their arrival in the ejaculate. Pilot under, the high gravity performance was called by the name of "girl-father". Pilots exposed to higher G forces had a significantly lower ratio of males to females in their offspring. Spermiogenesis dose not seem to be disturbed by professional specific influences (Radar radiation, G-forces etc.) The research was done to investigate G-force affect on the ratio of male to female offspring and effect to the matured sperm such as sperm metabolism or spermatogenesis. I do not know exactly if G-force effect on activity of Y-bearing sperm or on speramtogenesis of Y-bearing of sperm. As results, ratio of male to female offspring on the 7 days group is 1, and on 14 days group male is 45%, and at 28 days group male is 40%, and at 48 days group which beginning of spermatogenesis is affected from G-force male is 44.8%.
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KEYWORD
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