How Research on the Cell Biology of Reproduction Can Contribute to the Solution of the Population Problem
Mankind is now confronted by two inseparable problems of awesome magnitude—the uncontrolled growth of the world population and a serious shortage of food for the undernourished millions already born and for the millions yet to be born. The attainment of zero population growth in some regions of this country has led to a regrettable complacency about the population problem. But the fact remains that some 200,000 persons are being added to the world population every day—74 million new mouths to feed every year. The United Nations has identified 43 countries with very low per capita income, inadequate diet, and large food deficits. It is especially distressing that the highest fertility rates are found in many of those same developing countries that are struggling to improve the lot of their people only to find that unchecked population growth is wiping out the gains achieved in agricultural production. Research on the cell biology of reproduction provides the understanding of basic mechanisms that is essential for progress in the limitation of human fertility and in the promotion of fertility in food-producing domestic animals.
KeywordsZona Pellucida Cumulus Cell Artificial Insemination Acrosome Reaction Sperm Head
Unable to display preview. Download preview PDF.
- Bloom, W., and Fawcett, D. W., 1975, Textbook of Histology, W. B. Saunders, Philadelphia.Google Scholar
- Fawcett, D. W., 1975b, Gametogenesis in the male: Prospects for its control, in: Developmental Biology of Reproduction ( C. L. Markert and J. Papaconstantinou, eds.) pp. 25–53, Academic Press, New York.Google Scholar
- Hamilton, W. J. (ed.), 1956, Textbook of Human Anatomy, MacMillan, London.Google Scholar
- Mann, T., 1975, Animal reproduction and artificial insemination, Proc. R. Inst. G.B. 48: 107.Google Scholar
- Polge, C., and Rowson, L. E. A., 1952, Fertilizing capacity of bull spermatozoa after freezing at -79°C, Nature (London) 169: 626.Google Scholar
- Satir, P., 1974, How cilia move, Sci. Am. 231: 44–63.Google Scholar
- Smith, A. U., 1961, Biological Effects of Freezing and Supercooling, Edward Arnold, London.Google Scholar
- Yanigamachi, R., 1973, Behavior and functions of the structural elements of the mammalian sperm head in fertilization, in: Regulation of Mammalian Reproduction: Proceedings ( S. J. Segal, R. Crozier, P. A. Corfman, and P. G. Condliffe, eds.), National Institutes of Health Conference, Charles C Thomas, Springfield, I II.Google Scholar