Regulation of the motility of fowl spermatozoa by calcium and cAMP

Journal of Reproduction and Fertility
G J Wishart, K Ashizawa


Using an objective light-scattering technique, it was confirmed that washed fowl spermatozoa become immotile as the temperature is raised from 30 degrees C to the normal body temperature of 40-41 degrees C. Motility of washed spermatozoa was restored at 40 degrees C by the addition of caffeine or calcium, both stimulating motility to a maximum in a dose-dependent manner. Neither effector stimulated the motility of spermatozoa at 30 degrees C. Caffeine, but not calcium, caused an increase in sperm cAMP levels at 40 degrees C. The concentrations of calcium and cAMP in untreated spermatozoa were not significantly different in samples incubated at 30 degrees C or 40 degrees C.


Dec 28, 1999·Animal Reproduction Science·G J Wishart, Y I Wilson
Jan 12, 1999·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·K AshizawaY Tsuzuki
Dec 8, 2004·Reproduction : the Official Journal of the Society for the Study of Fertility·K AshizawaY Tsuzuki
Jan 3, 2006·Reproduction : the Official Journal of the Society for the Study of Fertility·K AshizawaY Tsuzuki
Sep 25, 2007·Reproduction : the Official Journal of the Society for the Study of Fertility·Fei QuZhide Ding
Jun 1, 2006·Reproduction : the Official Journal of the Society for the Study of Fertility·K AshizawaY Tsuzuki
Jul 11, 2008·Reproduction : the Official Journal of the Society for the Study of Fertility·M LemoineE Blesbois
Jul 20, 1999·Biology of Reproduction·A M DonoghueD W Burt
Jan 28, 1998·Molecular Reproduction and Development·K AshizawaY Tsuzuki
Oct 10, 2014·Biology of Reproduction·Thi Mong Diep NguyenElisabeth Blesbois
Jun 15, 1992·Biochemical and Biophysical Research Communications·K AshizawaY Tsuzuki
Apr 27, 2021·Animal Bioscience·Shin TaniguchiTeruo Maeda

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