Temperature-mediated regulation of calcium flux and motility in fowl spermatozoa

Journal of Reproduction and Fertility
M F Thomson, G J Wishart

Abstract

The motility of fowl spermatozoa at various temperatures was shown to be a function of their intracellular calcium content, measured after hypotonic lysis of the cells. Retention of calcium by spermatozoa, with consequent enhancement of motility, increased as the temperature was lowered from 40 degrees to 30 degrees C. Raising the temperature within this range subsequently reduced calcium retention and motility again. The temperature-dependent retention of calcium was a function of the rate of calcium efflux rather then influx. The temperature-sensitive efflux mechanism appeared to involve a Ca2+ ATPase which was relatively inactive at 30 degrees C, but active at 40 degrees C.

Citations

Apr 23, 2013·Biochemical Genetics·Guiqiong LiuZhou Tang
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
Sep 9, 2011·Reproduction in Domestic Animals = Zuchthygiene·William V Holt
Dec 18, 2013·Systems Biology in Reproductive Medicine·Jorge Parodi
Jan 28, 1998·Molecular Reproduction and Development·K AshizawaY Tsuzuki
Jun 15, 1992·Biochemical and Biophysical Research Communications·K AshizawaY Tsuzuki

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