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|Title:||Concentration of cations in different parts of male reproductive system and their influence on <i style="">in vitro</i> sperm motility in lizard, <i style="">Mabuya carinata </i>Schneider.|
Yajurvedi, H N
<i style="">Mabuya carinata</i>
|Abstract:||<smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="metricconverter"> Concentrations of mono- and divalent cations in the testis, three different regions of the epididymis and the vas deferens of lizard, <i style="">M. carinata</i> were determined. The concentrations of Na<sup>+</sup>,<sup> </sup>K<sup>+</sup> and Ca<sup>2+ </sup>increased gradually from testis to vas deferens. However, no significant variation in the levels of Mg<sup>2+</sup> was observed between testis and anterior epididymis, and between posterior epididymis and vas deferens. Further, in an <i style="">in vitro </i>sperm motility study, wherein different concentrations of the cations were tested, the maximum forward progressive motility of posterior epididymal spermatozoa was observed following treatment with 140 m<i style="">M</i> NaCl, 25 mM KCl, and 50 m<i style="">M</i> CaCl<sub>2</sub> whereas, treatment with magnesium brought about a decrease in sperm motility. The results indicate that<i style=""> </i>Na<sup>+</sup>,<sup> </sup>K<sup>+</sup>, and Ca<sup>2+</sup> have stimulatory effect at an optimum dose, whereas Mg<sup>2+</sup> has an inhibitory effect even at very low concentration, on sperm motility in the lizard <i style="">M. carinata</i>. </smarttagtype>|
|ISSN:||0975-1009 (Online); 0019-5189 (Print)|
|Appears in Collections:||IJEB Vol.46(10) [October 2008]|
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