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Influence of seminal vesicle secretion on sperm motility and gamete ertilizability in african catfish, Clarias gariepinus [electronic resource].

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Mansour, N

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Language: English Summary language: Arabic Description: p.137-147Other title:

تأثير إفرازات الحوصلة المنوية على حركات الحيوانات المنوية وخصوبة الجاميتات فى سمكة القرموط ، Clarias gariepinus.‪ [Added title page title]

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Assiut veterinary medical journal, 2004 v. 50 (103) [electronic resource].

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In: Assiut Veterinary Medical Journal 2004.v.50(103)Summary: Pure seminal vesicle secretion (SVS) completely inhibited the sperm motility as the sticky secretion hindered spermatozoa in free swimming. When the seminal vesicle secretion is diluted in water the viscosity decreases and the motility suppressing effect is neutralized. When semen is mixed with seminal vesicle secretion the sperm viability decreases to zero within 10 min. Seminal vesicle secretion had an inhibitory effect on fertilization through: (a) inhibition effect on sperm fertility as when semen prediluted in seminal vesicle secretion the fertilization rates were very low. (b) Negative effect on eggs as mixing of SVS to the eggs completely inhibit their fertilizability , probably as the sticky secretion plugged the micropyle and inhibited egg activation. (c) Bad effect on the sperm egg contact as mixing of semen, eggs, and SVS simultaneously, the fertility was also prevented. A function of SVS in the male and female communication during the prenuptial spawning behaviour is discussed.

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Pure seminal vesicle secretion (SVS) completely inhibited the sperm motility as the sticky secretion hindered spermatozoa in free swimming. When the seminal vesicle secretion is diluted in water the viscosity decreases and the motility suppressing effect is neutralized. When semen is mixed with seminal vesicle secretion the sperm viability decreases to zero within 10 min. Seminal vesicle secretion had an inhibitory effect on fertilization through: (a) inhibition effect on sperm fertility as when semen prediluted in seminal vesicle secretion the fertilization rates were very low. (b) Negative effect on eggs as mixing of SVS to the eggs completely inhibit their fertilizability , probably as the sticky secretion plugged the micropyle and inhibited egg activation. (c) Bad effect on the sperm egg contact as mixing of semen, eggs, and SVS simultaneously, the fertility was also prevented. A function of SVS in the male and female communication during the prenuptial spawning behaviour is discussed.

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