224 



The Biochemistry of Semen 



Amino acids (contd.) — 



in diluents, 76, 114; effect on 

 sperm, 76, 114; after castration, 

 113 



Aminopeptidase, 1 1 6 



Aminosugar, 21, 36, 112 



Ammonia, 21, 32-3; formation, 

 111, 116-17 



Amphibia {see also frog), sperm- 

 affecting agents, 54, 95; nucleic 

 acid, 105 



Ampulla, secretory function, 15, 

 24, 113, 138, 181, 185 



Androgamones, 70-1; 95-6 



Androgens, in semen, 67-9; in 

 ovaries, 144; indicator tests based 

 on semen analysis, 67-8, 118-19, 

 139-45, 186-7; effect on acces- 

 sory organs, 67-8 



Antibiotics, use in semen diluents, 

 81 



Antibodies in semen, 79-80 



Anti-fertility factor, 98 



Antifertilizin, 70 



Antifibrinolysin, 115 



Antigens in semen, 79-80 



Arbacia {see also sea-urchin), pH 

 of semen, 44; sperm nucleic acid, 

 104; creatine, 180; gelatin-liquefy- 

 ing enzyme and mucopoly- 

 saccharase, 96; echinochrome, 

 70; protein, 84; effect of seminal 

 plasma and amino acids on 

 sperm, 76 



Arbacine, 108 



Archegonia, chemotropic sub- 

 stances, 72 



Arginine, free, 113; protein-bound, 

 84, 106-8 



Arniadillidium vulgare, sperm sur- 

 vival in the female tract, 9 



Arsenicals, effect on sperm, 

 58 



Artificial diluents, 55, 73, 76, 79-82 



Artificial insemination, 3, 38-40, 

 79-82 



Arvelius albopunctatus, PAS-reac- 



tion in the acrosome, 11-12 

 Ascaridine in Ascaris megaloce- 



phala, 85 

 Ascidia, betaine in gonads, 1 80 

 Ascorbic acid, 20, 23, 32-3, 175, 



179 

 Asellus aquaticus, spermatogenesis 



and ribonucleic acid, 5 

 Ash content of semen, 32-3, 43, 87 

 Aspartic acid, free, 86, 113; in 



proteins, 85 

 Ass semen, 2, 43 

 Aureomycin, in diluents, 81; effect 



on biosynthesis of ergothioneine, 



179 

 Axial filament, 13 

 Azide, effect on sperm, 56, 91 

 Azoospermia, due to hyperpyrexia, 



62; urinary excretion of steroids, 



62; fructose and fructolysis, 46, 



138 



Bacteria in semen, 39, 81 



Bacteriostatic properties of sper- 

 mine, 162 



Barberio reaction, 163^ 



Bat semen, volume, 2; sperm dens- 

 ity, 2, 82; survival of spermato- 

 zoa, 6, 9, 82; clotting, 28; 

 dilution effect, 82 



Bee, clotting of semen, 28 



a-Benzoinoxime (cupron), as a 

 metal-binding agent, 76 



Benzoquinone, effect on sperm, 57 



Betaine, in gonads of ascidia, 180 



Bicarbonate, in semen and acces- 

 sory secretions, 18, 22, 32-3; in 

 diluents, 81 



Blood glucose, as precursor of fruc- 

 tose, 149 



Blood plasma and serum, effect on 

 sperm, 55, 79 



Boar accessory organs, 16, 35-6 



Boar semen, volume and density, 2, 

 35-6; dry weight, 32; physico- 



