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TRANSUTERINE MIGRATION OF SPERMATOZOA IN THE GOLDEN HAMSTER (MESOCRICETUS AURATUS)

In testing the fertilizing capacity of epididymal spermatozoa from the golden hamster under various experimental conditions, it was decided to determine the feasibility of placing spermatozoa in one uterine horn of a female in oestrus and depositing control spermatozoa in the contralateral horn of the same female. Although Hunter (1969) reported an insignificant degree of transuterine sperm migration in golden hamsters following unilateral intra-uterine deposition of spermatozoa towards the end of oestrus, the possibility remained that it might be more extensive during early oestrus. If, during this period, there is significant transmigration of spermatozoa from one uterine horn to the other, then clearly it is undesirable to examine two dissimilar samples of spermatozoa in one and the same female, despite the presence of a bipartite uterus where there is no uterine body and where the cervix is apparently divided