SUBJECT INDEX 



1579 



Plectrophenax nivalis (conl.) 



mating behavior, courtshij) by male and, 1276 



nest-bnilding 



courtship by male and, 1275 

 temporal relation 

 to copulation, 1271 

 to egg-laying, 1273 

 Plcurodeles 



chromosome pattern, 44-48 



development of ovary, corticomedullarv rela- 

 tions, 108 



gonad transformations, gonadal hormones and, 

 94-95 



Miillerian duct development, androgen and, 113 

 Plcurodeles waltlii, gonad transformation in males, 



estrogen and, 93 

 Ploceidae 



nest-building 

 experience and, 1334 

 role of sexes, 1270 

 Plumage 



fowl, prolactin and, 1102 



hormonal control, 1091 



PhyloDiachus, androgen and, 1091 

 P^NIS (Pregnant mare serum) 

 Podiceps cristalus 



incubation, temporal relation to egg-laying, 1285 



nest -building, role of sexes, 1270 

 Podicipedidae, precocial young, 1298 

 Podilynibus podiceps 



incubation, role of the sexes, 1303 



nest, 1270 



nest -building, role of sexes, 1271 



parental behavior, role of sexes, 1303 

 Poeciliidae 



gonapodium, 1042 



intraovarian embryogenesis, 1056, 1057 

 adaptation for food absorption, 1057 



pseudoplacenta, 1057 



sperm storage in female, 1055 



superfetation, 1056 



viviparity, 1057 

 Poephila gutta, nest-building, role of sexes, 1270 

 Polecat, parental behavior, specificity, 1320 

 Polvamines in prostate, 386 

 Polyandry in Tibet, 1470 



Polydysspondylism, autosomal monosomic syn- 

 drome, 64 

 Polyploidy 



and sex types, 8, 10-11 



Runiex, sex determination, 41-42 

 Polyspermy 



and embryonic development, 845 



definition, 844 



delayed fertilization and, 850 

 Pongo pygmacus, nest-building pattern, 1305 

 Population density and adrenal functioning, 1261 

 Porcupine 



breeding season, 502 



masculine behavior by female, 1190 



pregnancy, length, 961 

 Porpoise 



hypophysis, anatomy, 165, 167 



intermedin, cellular origin, 200 

 Pdltufiophis, corpus luteum, 1059 

 Precocial young, birds, 1298 

 Pregnancy 



ACTH secretion, 1006 



adrenal and, 1000- 1003 



adrenal corticoids and, 671, 965, 976, 978 

 comparative, 1000-1002 



adrenocorticoid levels, 978, 1006, 1007 



aldosterone levels, 979-980 



aminoguanidine toxicity, 996 



Pregnancy (cont.) 



and amino acid excretion, 690 691 



and anemia, 990-991 



and hypervolemia, 991-993 



and hypophyseal gonadotrophins, 203, 260-261 



and lactogeiiesis, 606-607 



and liver PXA. 690 



and myometrial activity, 1013-1014 



and nest liiiildiiig in mouse, 1308 



and ovarian follicular growth, 260, 457-459 



and plasma l)iiiding of steroids, 476 



and plasma proteins, 993-994 



and prolactin secretion, 204 



and renal function, 994-995 



and thyroid functioning, 204, 478-479 



antidiuretic hormone in, 992 



basal metabolic rate and, 992 



blood 



constituents, 988-990 



estrogen levels, 965 



gestagen l(>vels, 965, 966-972 



hydrocortisone levels, 965 



iodine levels, 979-981 



relaxin levels, 965 



somatotrophin levels, 965 



thyroxine levels, 965 

 body temperature and, in rat, 963 

 caloric intake and, 690 

 cervix uteri of monkey, 573, 575 

 cultural lore, 1466-1467 

 diabetes mellitus and, 673, 1003 

 dogfish, ablation of corpus luteum and, 1058 

 edema, 988-995 

 estrogen-progesterone interrelationships and, 



1004 

 fatty acid deficiency and, 691 

 fluctuations in cytoplasmic basophilia, 937 

 food intake, 689' 

 histaminase levels, 995-996 

 histamine during, 996 



hypervolemia, arteriovenous shunt theory, 992 

 hypophyseal carminophil cell activity in bats, 



' 179 

 hypophyseal cytology, 204-205 

 hypophVsis and, 260, 1005-1006, 1331 

 Lacerta, corpus luteum and, 1059 

 length 



in representative mammals, 958-961 



lactation and, 851, 959 



litter size and, 959 

 levels of carbonic aidiydrase, 996-997 

 nitrogen l)alaiic(' in rat, 690 

 nutritif)!! and, 689 ()93 

 ovary and, 970-971, 1003-1005, 1008 



in mare, 973 



in rablMt, 965, 968, 970-971 



in sheep, 970-971 



oxygen consumption, 980, 999-1000 

 pars nervosa ablation and, 1147 

 placental gonadotrophins, 982-986 

 placental phospliat ases, fluctuations, 927-928 

 progesterone aiul, 1003-1005 

 prolactin and, in rat, 1005, 1006, 1329 

 prolactin levels, 981-982 

 protein 



deficiency, 690-691 

 estrogen-progesterone compensation, 691 



distribution, 689 

 relaxin and, in mouse, 1004-1005 

 relaxin levels, 965, 974-975 

 role of estrogen, 964 

 serum gonadotrophin levels, 965 

 snakes 



blood levels of ])rogesterone, 1059 



