Abstract
Austin and Braden1 have shown in their classic paper on polyspermy in the rat that dispermy leads to a triploid fertilized egg and that such an egg may cleave normally up to at least the eight-cell stage. These conclusions have been confirmed by the recent investigations of one of us2. However, Braden and Austin3 found no instance of triploidy among rats born from delayed mated females in spite of the presence of about 9 per cent dispermic eggs at fertilization stages.
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References
Austin, C. R., and Braden, A. W. H., Aust. J. Biol. Sci., 6, 674 (1953).
Piko, L., C.R. Soc. Biol., Paris, 152, 1356 (1958) (and unpublished results).
Braden, A. W. H., and Austin, C. R., Science, 120, 361 (1954).
cf. Beatty, R. A., “Parthenogenesis and Polyploidy in Mammalian Development” (Cambridge Univ. Press, 1957).
Edwards, R. G., J. Exp. Zool., 137, 317, 349 (1958).
Austin, C. R., and Braden, A. W. H., Aust. J. Biol. Sci., 7, 179 (1954).
Austin, C. R., and Braden, A. W. H., Aust. J. Biol. Sci., 7, 195 (1954).
Bomsel-Helmreich, O., Ann. Zootech., 8, 327 (1959).
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PIKO, L., BOMSEL-HELMREICH, O. Triploid Rat Embryos and Other Chromosomal Deviants after Colchicine Treatment and Polyspermy. Nature 186, 737–739 (1960). https://doi.org/10.1038/186737b0
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DOI: https://doi.org/10.1038/186737b0
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