Elucidation of the mechanism responsible for the temperature-dependent reversible inactivation of the motility of fowl spermatozoa

British Poultry Science
M F Thomson, G J Wishart


1. When washed fowl spermatozoa were held at 30 degrees C in a Ca++-free medium they retained internal Ca++, assimilated from the seminal plasma in vivo, which maintained their motility. 2. When this preparation was warmed to 40 degrees C, Ca++ was lost to the medium and the spermatozoa became immotile. 3. On subsequent cooling to 30 degrees C, the spermatozoa were capable of re-sequestering the Ca++, which restored their motility. 4. Removal of internal Ca++, with subsequent reduction of cellular activity, improved the survival of fowl spermatozoa held at 30 degrees C.


Jul 1, 1977·Analytical Biochemistry·W B Gratzer, G H Beaven
Jul 1, 1987·Journal of Reproduction and Fertility·G J Wishart, K Ashizawa
Mar 1, 1985·Poultry Science·M R Bakst, M P Richards
Dec 1, 1962·Journal of Reproduction and Fertility·H SCHINDLER, A NEVO

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