SUBJECT INDEX 



153.5 



Drosophila prosaltans (cont.) 



female sex ratios, maternal cytoplasmic agents 

 and, 25 

 Dr'osophila pseudoobscura 

 female sex ratios, 20 

 sex genes, and intersexuality, 14 

 sterility in interracial hybrids, 20 

 Drosophila repleta, hybridization with Drosophila 



neorepleta, 20-21 

 Drosophila simulans 

 gynandromorphs, 22 

 hybridization with Drosophila mclanogaster, 14, 



20 

 intersexuality, 14 

 sex genes, 14 

 Drosophila siibobsciira, sex genes and intersexual- 

 ity, 16 

 Drosophila virilis 



intersexuality, 14 -^ 



sex genes, 14 



and intersexuality, 14 15 

 Y chromosomes, 25 "' 



Drosophila willistoni 



female sex broods, 25-26 



female sex ratios, maternal cytoplasmic agents 

 and, 25-26 

 Drymarchon corais couperi, sperm storage in fe- 

 male, 1055 

 Dryophylax, corpus luteum, 1059 

 Ducks 



adrenal functioning, hypophyseal stalk transec- 

 tion and, 282 " 

 embryonic gonads, endocrine activity, 144 

 genital tubercle differentiation, isolation in 



vitro and, 129 

 gonad differentiation, 96-97 

 gonad transformation 

 in male, 101 

 morphologic basis, 96 

 hypophyseal gonadal relationships, 133 

 hypophyseal anatomy, 274, 275, 1099 

 hypophyseal gonadotrophins, seasonal fluctua- 

 tions, 259 

 intermedin, cellular origin, 200 

 mating behavior of males, castration and, 1181 

 Miillerian duct development, castration and, 



115 

 neurosecretion, 1135 

 penis, gonadal hormones and, 127, 1091 

 reproduction 



hypophyseal stalk transection and, 283 

 refractory period for light stimulation of 

 male, 1139 

 sexual maturation in males, thyroid and, 1105 

 sinistral ovariectomy, 1114 

 spermatogenesis, 1092-1094 

 syrinx, development, 116, 131, 142 

 testis, light and, 1137-1138 



thyroid functioning, hypophyseal stalk tran- 

 section and, 283 

 Ductuli efferentes 



ligature of spermatogenesis, 712 

 motility, 712 



reabsorptive function, 318 

 viper, seasonal changes, 1041 

 Ductus deferens (see also Vas deferens) 

 and transport of sperm, 713 

 Anolis, estrone and, 1054 

 guinea pig, prepubertal development, 307 

 viper, seasonal changes, 1041 



Echidna, ovum, size, 812 



Echidna aculeata, pregnancy, length, 960 



Echinus esculentus, sperm metabolism, 758 



Eclampsia, placental changes, 900, 902 

 Edema, in pregnancy, 988-995 

 Edentatn (sec also Short-tailed manis) 

 male accessory- reproductive glands, 368 

 prostate, \\\n\ 369 

 seminal vesicles, type, 376 

 testis, location, 309 

 EEG recordings 

 copulation, 1350 

 vaginal stimulation, 1350 

 Eel 



genital tracts, develoi)ment, 1060 

 migration, 1036 

 oviduct, absence of, 1051 

 spawning, seasonal occurrence, 1036 

 Egernia 



corpus luteum, 1059 

 oviparity, 1056 

 Egg-laying 

 birds 



by brood parasites, 1277, 1281-1282 

 determinate, 1144, 1282-1283 

 external stimuli and, 1278-1283 

 incubation and suppression of, 1283 

 indeterminate, 1144, 1282-1283 

 interruption of incubation and, 1297 

 nesting materials and, 1143, 1280-1281 

 pars nervosa and, 1147, 1278 

 patterns, 1276-1277 

 presence of male and, 1279 

 tactile stimuli in determinate species, 277 

 temi)oral relation to nest-building, 1273-1274 

 visual stimuli and, 277 

 doves, conditioning to atypical stimuli, 1343 

 fowl 



light and, 1145-1146 

 physiologic regulation, 1147-1148 

 progesterone and, 1105-1106 

 refractory period, 1146 

 temporal relation to ovulation, 1146-1152 

 parakeet, sounds of other birds and, 1280 

 reptiles, season of, 1049-1050 

 salamanders, gonadotrophins and, 252 

 Egyptian buffalo 



estrus, postpartum, 458 



ovarian follicular growth, during pregnancy, 458 

 Ejaculate, mammals 

 constituent parts, 726 

 sperm density, 726 

 volumetric data, 726-727 

 Ejaculation 



cardiovascular intensification, 725-726 

 electrical stimulation indicator of androgen ac- 

 tivity, 397 

 neural pathways, 723-724 

 potential, mammals, 723 

 repetitive 



sperm numbers, 723 

 volume changes, 723 

 Ejaculatory ducts, birds, 1095 

 Elanus leucuriis, parental behavior, role of the 



sexes, 1299 

 Elephant 



hypophysis, anatomy, 167 



intermedin, cellular ogigin, 200 



ovarian follicular growth during pregnancy, 



459 

 parturitive behavior, 1310 

 testes, location, 309 

 Elephant, African 



corpus luteum, functional life, 460 

 pregnancy, length, 960 

 Elephant, Indian, pregnancy, length, 960 



