1570 



SUBJECT INDEX 



Opossum (cont.) 



hypophyseal cytology 



carminophil orangeophil distinction, 177-178 

 during sexual maturation, 202 

 identification of genetic sex, 55 

 litter size, 961 

 mammary development, 591 



estrogen and, 592 

 Miillerian duct development, androgen and, 



114-115, 142, 146 

 ovarian hormone secretion during anestrum, 500 

 ovary, age of animal and responsiveness to gon- 



adotrophins, 477 

 ovulation, temporal relation to heat, 514 

 ovum 



fate of unfertilized, 837 

 fertilizable life, 849 

 size, 812 

 tubal, 828 

 parental behavior, retrieving, 1314 

 parturitive behavior, 1311 

 phallus development, gonadal hormones and, 



122, 126-127 

 pregnancy, length, 961 

 prostate development, gonadal hormones and, 



123-124 

 prostate structure, 370 

 semen constituents, fructose, 381 

 sex differentiation 

 character of sex primordia and, 137 

 critical period and, 141 

 fetal compared with adult gonadal hormones, 



147 

 hormone experiments, 82 

 sex genotype and, 139-140 

 testis 



age of animal and r(>s|)()iise to androgen, 338 

 genetic l);isis tor descent , 314 

 serum g()nail()ti'()i)liiiis .•md, 337 

 time of descent, 313 

 urogenital siims differentiation, gonadal hor- 

 mones and, 122-124 

 Wolffian duct development, androgen and, 115, 

 120 

 Ophidium, ovary, type, 1049 

 Orchiectomv (see also Castration) 

 in amphibians, 1044-1045 

 in fishes, 1044 

 in reptiles, 1045 

 Orgasm, female, 1436-1437, 1465-1466 

 Arapesh, 1465 

 Manus, 1465 

 Ornithorhyncus, ovum, size, 812 

 Ornithorhyncus paradoxicus, prostate, type, 371 

 Oryzias 



breeding season, 1069 

 liver 



androgen and, 1046 

 sex dimorphism, 1046, 1053 

 ova in testis, testosterone and, 1067 

 ovary, type, 1049 

 sex reversal 



estrogens and, 46-47, 1067 

 gonadal hormones and, 46-47, 1070 

 skin coloration 

 genetic basis, 1070 

 in male 



androgen and, 1046 

 castration and, 1044 

 Oryzias latipes 



masculine behavior bv female, androgen and, 



1196 

 oviduct, structure, 1051 



Oryzias latipes (cont.) 

 sex determination, chromosomes and, 46 

 sex reversal, estrogen feeding and, 46-47 

 skeletal parts 

 estrone and, 1069 

 testosterone and, 1069 

 Oryzomys palustris, parental behavior, retrieving, 



1318 

 Osteogenesis imperfecta, chromosome idiogram, 65 

 Ostrich, male feathering, 1119 

 Ovarian androgen, 465-471 



and masculinization of female, 465-466 

 cellular origin, 466-471, 1120 

 Ovarian atresia, birds, progesterone and, 1121 

 Ovarian atrophy, inanition and, 683-684 

 Ovarian cycles 



and adrenal cortex, 482 

 androgens, and, 269-270 

 anovular, 499 

 prepubertal, 499 



representative mammals, 498-500 

 Ovarian development 



rat, cortico-medullary relations, 103-105 

 role of germ cells, 85 

 Ovarian differentiation 



rat, critical period, 104, 105 

 role of sex genotype, 85 

 Ovarian follicular growth (see also Ovulation), 

 451-457, 504-507 

 age of animal and, 457, 478, 959 

 atresia during, 461-465 

 birds 



external stimuli and, 1278-1283 

 growth rate, 1272-1273 

 inhibition by parental behavior, 1302 

 light and, 1137-1141 

 pregnant mare serum and, 1128 

 preovulatory swelling, 1272-1273 

 progesterone and, 1132-1133 

 l)sychic factors and, 1143-1144 

 budgerigars, sounds of other birds, 1142 

 cervical stimulation and, 510 

 during adolescence, 500 

 during anestrus, 500 

 during lactation, 459 

 during pregnancy, 260, 457-459 

 environmental stress and, 457 

 estrogen and, 451-453, 464, 507 

 external stimuli and, 510 

 fowl 



amino acid requirements, 685 

 hypophvseal gonadotrophins and, 1128-1130, 

 1277 

 follicle-stimulating hormone and, 243, 246 

 gonadotrophins and, 243, 246, 450-456, 462, 504- 



507 

 hypothalamic blocking and, 523-529 

 intraocular pituitary grafts and, 510-511 

 mouse, crowding and, 1342 

 organizing action of membrana granulosa, 454 

 parakeet, sounds of other birds and, 1280 

 pigeon 



presence of male and, 1279 

 prolactin and, 1128 

 preovulatory swelling, 455-456 

 ring dove 



nesting materials and, 1294 



presence of male and, 1294 



thyroid hormone and, 479-480 



time required, 455-456 



Ovarian functioning, age of animal and, 476-478 



Ovarian histochemistry, lipids, 896 



