SUBJECT INDEX 



1599 



Sperm (cont.) 

 storage 

 ill female 

 fishes, 1055 

 reptiles, 1055 105() 

 urodeles, 1055 

 in male, Tachydromus, lO-iO-1041 

 in vitro, fowl, and embrvonic abnormality, 

 1110 

 structure, 709, 750-754, 756-757 



genetic differences, 751 

 supernumerary, 844-845 

 survival time 

 in female tract, 721, 738 

 in male tract, 713, 721 



abdominal temperature and, 713 

 castration and, 713 

 Takydromas, orchiectomy and viability, 1045 

 Terrapene, orchiectomy and viability, 1045 

 thermodynamic properties, 764 

 tissue penetration, 744-745, 749 

 transport 



in female, 729-738 

 cervix and, 734-735 

 ciliary activity, 731-732 

 isthmus of oviduct and, 737 

 mechanism, 729, 731, 734 

 ovarian cycle and, 732 

 regional obstacles, 732-733 

 time, 730-731 



uterotubal junction and, 735-737 

 in male 



ductus deferens, 713 

 epididymis, 711-713 

 testis, 318 

 fowl, male, time of, 1096 

 velocity, 730 

 Sperm-induced immune responses, 746-750 

 Spermathecae, in urodeles, 1055 

 Spermatogenesis 

 ACTH and, 345 

 adrenal corticoids and, 344-345 

 age of animal and response to androgen, 1104 

 amphibia, 1036-1037 



androgen and, 247, 270, 206, 328, 338-343, 451 

 compared with gonadotrophin maintenance, 



340 

 maintenance dosage, 340-341 

 androstenediol and, 345 



auto-inununization and, in guinea pig, 747-748 

 autonomic nerves and, 322 

 birds 



adrenal corticoids and, 1104 

 environmental temperature and, 1089 t". 



inherent cycles, 1141 

 progesterone and, 1105 

 rainfall and, 1142 

 testosterone and, 1101 

 thyroid and, 1105 

 budgerigars, vocalizations and, 1142 

 carp 



androgen and, 1045 

 estrogen and, 1053 

 congenital defects in mouse, 804 

 cycles, 323-329, 1092-1093 



Sertoli cells in, 324 

 dehydroisoandrosterone and, 345 

 dietary protein and, 679-680 

 drug action in fowl, 1108 

 duck, 1092-1094 

 estrogen inhibition, 266, 1053 

 ethinyl testosterone and, 345 



Spermatogenesis (cont.) 

 fish, 1035-1036 



seasonal character, 1035-1036 

 spermatophore formation, 1036 

 following sex reversal in fish, 1065, 1067 

 fowl 



adrenaline and, 1104 



age of animal and response to cortisone, 1104 

 garter snake, androgen and, 1069 

 gonadotrophins and, 244, 306, 327, 336-337 

 high temperature injury, differential cellular 



resistance, 352 

 homologous antibody serum and, 747 

 hypophysecfomy and, 335-337 

 inheriled defects, hormonal treatment, 804 

 in right gonad of bird, 1112 

 killifish, androgen and, 1045 

 methylandrostanediol, 345 

 mouse, protein deficiency and, 682 

 precocity, 353 

 L^^-pregneninolone and, 345 

 progesterone and, 345 

 rat 



blood sugar and, 673 

 cycle in, 323-327, 353 

 rebound phenomenon, 270 

 renewal of spermatogonia, 325-327 

 reptiles, 1037 

 Sceloporus 

 estrone and, 1068 

 testosterone and, 1068 

 Sciara, 29 



steroid mixtures and, 345 

 temporal relation to androgen secretion, 384 



393, 677 

 testosterone maintenance, nutrition and, 682 

 thyroid and, 346-347, 669 



thyroxine compared with triiodothyronine ac- 

 tion, 669 

 turkey 



body temperature and, 1142 

 drug action and, 1108 

 Spermat ophores 

 amphibia, 1055 



formation of, 1037 

 fish, 1036 



squid, and sperm motility, 721 

 Spermatoxins, 749 

 S])einiiation (see also Sperm release) 



amphil)ia, 252-253, 711, 987-988 

 Spermiogenesis (see also Spermatogenesis) 

 duck, 1092 

 mammals 



hormonal regulation, 352 

 micro-changes, 752-753 

 Spermosin, and sperm motility, 767-768 

 Spheniscidae 



egg-laying pattern, 1277 

 precocial young, 1298 

 sex dimorphism 

 dorsal crest, 1044 

 white spines, 1044 

 Spinacia oleracea, sex determination, 42-43 

 Spinax 



corpus luteum, 1058 

 viviparity, 1057 

 Spisula, sperm, metabolism, 758 

 Spizella pusilla, regulation of body temperature, 



in nestlings, 1356 

 Spurs, fowl 



growth, sex dimorphism, 1092 

 hormonal control, 1091 

 Squalene, and cholesterol biosynthesis, 644-645 



