1598 



SUBJECT INDEX 



Sparrow (cont.) 

 estrogen secretion, nesting material and, 1281 

 gonadotrophin stimulation of testis, adrenaline 



and, 1104 

 in bioassays for androgen, 1154 

 incubation patch, hormonal basis, 1288-1289 

 nest-building 



presence of male and, 1143, 1276, 1279 



role of sexes, 1270 



temporal relation to copulation, 1271 

 ovarian activity, nest-bulding by male and, 1143 

 ovarian follicular growth, pregnant mare serum 



and, 1128 

 ovary 



androgenic stimulation, 1131 



epinephrine and, 1133 

 oviduct, androgenic stimulation, 1125 

 ovulation, pregnant mare serum and, 1128 

 reproduction, light and, 1137 

 responsiveness to gonadotrophins, in cross- 

 species tests, 254 

 seminiferous tubules, cholesterol in, 1093 

 sperm, 1096 



release, hypophyseal gonadotrophins and, 

 1093 

 spermatogenesis 



body temperature and, 1089 



testosterone and, 1101 



thyroid and, 1105 

 testis 



functioning 

 light and, 1137 

 perching and, 1143 



size, right compared with left, 1089 

 Sparus longispinus, genital tract, development, 



1060-1061 

 Spawning, fish 

 response to amphibian hypophyseal gonado- 

 trophins, 252 

 seasonal occurrence, 1036 

 Sperm (see also Eijididymal sperm) 

 accessory, 844 



acrosome reaction, fertilizin and, 775 

 age at fertilization, and condition of embrj-os, 



729 

 antigenicity, 710, 745-746 



methods of determining, 745 

 antigens, strain differences, 746 

 antisperm serum and, 749-750 

 Armadillimi, duration of fertilizing capacity, 



1109 

 bats, duration of fertilizing capacity, 1109 

 biochemical components, 751, 754-756 

 biosynthetic activity, 764-765 

 birds 



duration of fertilizing capacitv, 1109, 1271 



structure, 1096-1097 

 capacitation, 710, 738-740, 833-834 

 cattle 



metabolism, 1111 



preservation in vitro, 1110-1111 

 changes after penetration of ovum, 838-844 

 count, unilateral orchiectomy and, 245 

 cytogenetic differences, 710-711 

 discharge, Misgurnus, estrogen and, 1053 

 DNA content and fertility, 755 

 duct, Lebistes 



estrogen and, 1070 



testosterone and, 1069 

 electrophoretic properties, 757 

 energy source, 384 



enzymes, 755-756 



Sperm (cont.) 

 epididymis 



acquisition of motility, 721-722 



metabolism, 761-762 

 fate 



of nonejaculated, 720-721 



of nonfertilizing, 744 

 fertilizin and, 773-775 

 fertilizing capacity 



acquisition of, 720 



antisperm serum and, 773 



chelating substances and, 772 



dilution and, 770 



duration, 738-739 



ionic environmental, 771-772 



irradiation and, 770-771 



segment of epididymis and, 720 



seminal plasma and, 772 



temperature and, 770 



toluidine blue and, 771 



trypaflavine and, 771 



urine and, 772 

 first appearance of in developing testis, 307-308 

 flagellation, 765-769 

 flagellum, structure, 769 

 fowl 



acquisition of fertilizing capacity, 1095 



age of and fertilizing capacity, 1109-1110 



androgen and fertilizing capacity, 1095 



metabolism, 1111 



preservation in vitro, 1110-1111 



x-ray injury and embryonic mortality, 1109 

 heterogeneity, 710-711 

 hyaluronidase and, 829-831 

 invertebrate, metabolism, 757-759 

 ketosteroids in, 332 

 mammals, metabolism, 757-764 

 maturational changes, 709-710, 720 

 metabolism, 757-764 



amino acids and, 761 



energy sources, 757-764 



environmental factors and, 769-770 



of fructose, 393 



of glucose, 393 



power output, 764, 766-767 

 minimum for fertilization, 727 

 motility 



acquisition of, 721-722 



cervical mucus and, 740 



duration, 740 



environmental factors and, 769-770 



inhibiting factors, 721 



mechanisms, 767-769 



velocity, 766 

 Nebenkern, 751, 753 

 nests 



birds, and retention of fertilizing capacity, 

 1109 



fowl, in oviduct, 1122 

 number at site of fertilization, 738 

 penetration of zona pellucida, 832-833 

 permeability, 756-757 

 physical properties, 751 

 physiology, 756-769 

 preservation of, 728-729 

 proteolytic enzyme in, 829 

 rate of production, 713 

 regional antigens, 745-746 

 release (see also Spermiation) 



cyclostomes into coelom, 1039 



Rana, epinephrine and, 1037 



sparrow, gonadotrophin and, 1093 

 significance of large numbers, 711 



