SUBJECT INDEX 



1553 



Hypothalamic stimulation (conl.) 



and reproductive behavior in rat, 1349 



EEG after-reaction threshold in rabbit, 1206 

 Hypothalamic-hypophvseal coiuniunication, ()27- 



628 

 Hvpothalamic-hvpophvseal tracts 



birds, 1135 ^ 



ducks, interruption of and breeding cycles, 1130 



vertebrates, 223-225 

 Hypothalamus 



and hypophyseal functioninp;, 276-284 



and hypoi)lnsc,Ml j^onadot r()])hin secretion, 283- 

 284, .")!() r)12, 536 



and hyi)ophyseai -ovarian interactions, 540-541 



and hypophyseal secretion, electrical stimula- 

 tion', 278 



and ovulation, 520-523 



maturation of mechanism, 530 



and pars intermedia, 280 



and reception of environmental stimuli, 278 



blocking ajrents, 512, 523-529 



differentiation into male and female types, 1349 



ovarian functioning and, 520-521 



sexual dimorphism of, 1349 

 Hypothermia, and fetal loss, rat, 963-9()4 

 Hyracoidea, male accessory reproductive glands, 

 368 



ICSH (Interstitial cell-stimulating hormone) 

 Icterus galbula, nest, 1270 

 Implantation, 850-865 

 blastocyst 

 expansion of, 858-859 

 ori(Mit;iti()n of, 851-856, 863, 864 

 rolr nf, s:)7 S65 

 blastocyst endometrial interactions, 854, 860- 



"865 

 delayed, 851-852 



in rat, 459 

 endometrial changes, 861 

 estrogen-progesterone and, 851-852 

 histamine and, 863 

 lactation delay, 851 

 monkey, trophoblast and, 905-90(i 

 plaques, monkey, 571-572 

 progesterone and, 861 

 psychologic block, 1031 

 removal of zona pellucida, 855-858 

 site, 852 

 spacing of embryos, 852-855 



mvometrial contractions and, 853-854 

 time of, 850-851 



trophoblast and, 855, 857-858, 863, 865 

 Imprinting, 1357, 1404-1406 



anomalous behavior in geese, 1460 

 comparison with gender role in man, 1404-1406 

 Inanition (see also Dietary deficiencies, Malnu- 

 trition) 

 and deciduoma formation, 688 

 and hypophyseal gonadotrophin ])roduction in 



birds, 1134 

 and hypophyseal prolactin in rat, 689 

 and mammary growth, 689 

 and ovarian responsiveness to gonadotrophins, 



687 

 and pregnancy toxemia, 690 

 and seminal fructose level, 384 

 and sexual maturation 

 in fowl, 1134 

 in males, 677 

 and uterine responsiveness to estrogen, 688 

 Incubation (see also Broodiness) 



ambient temperature of time spent on eggs, 1295 

 and secretion of prolactin. 1293-1294, 1296-1297 



Incubation (cont.) 



and testis in birds, 1291-1292 

 behavior 



and broodiness 

 distinction, 1302 

 interchangeabilitv, 1303 

 androgen and, 1288, 1291-1292 

 by male fowl, prolactin and, 254 

 definition, 1302 

 development of, 1284-1287 

 estrogen and, 1289, 1292-1293 

 fowl 



genetic basis, 1354 



hypophyseal prolactin and, 1289-1290 

 sex dim()r])liisni, 1354 

 strain dilTerenccs, 1354 

 hormonal regulation, 1289-1294 

 in males, 12S6 1287 



incul)ati()n patch and, 1102, 1287-1288, 1297 

 male A poi/oii Imberbis, 1042 

 l)at terns, 1284 1287 



])igeon compared with mourning dove, 1353 

 removal of eggs and, 1296-1297 

 Megapodes, 1295 

 ring dove 

 experience and, 1340 

 progesterone and, 1340 

 sex dimorphism in development of, 1286 

 turkey, j)rogesterone and inhibition of, 1132 

 by males, 1106 



temjjoral relationship to egg-laying, 1286 

 coincidence with steatogenesis in testis, 1294 

 external stimuli of, 792-796, 1294-1297 

 increase in body temperature, 1355 

 in ring dove, temporal relation to ovulation, 



1294 

 need for turning the eggs, 1356 

 patch, 1287-1289, 1295 



and incubation behavior, 1102, 1297, 1347, 1355 



development, 1288 



estrogen-prolactin and, finches compared with 



cowbirds, 1353 

 hormonal basis, 1102, 1106, 1288-1289 

 temporal relation to egg-laying, 1288 

 pattern, species differences, 1352 

 period, behavior of males, 1302 

 problem of effectiveness, 1285-1286 

 progesterone and, 1093, 1102, 1125, 1293-1294 



1353 

 prolactin and, 1102, 1289-1291 

 prolactin level during, 1101, 1128-1129 

 regulation of cycle in which both sexes incu- 

 bate, 1102 

 role of the sexes, 1303 



temporal relation to egg-laying, 1284-1286 

 testosterone and, fowl compared with pigeons 

 1353 

 Indicatoridae, parasitic egg-laying, 1277 

 Inherent rhythms, and tissue sensitivity to gon- 

 adal hormones, 1214 

 Inhibin, and hypophyseal gonadotrophin secre- 

 tion, 306, 334-335 

 Innate releasing mechanisms (IRM), and response 



to cue stimuli, 1403 

 Inositol secretion 

 androgen and, 385 



in male accessory reproductive glands, 385 

 Insectivora 

 copulation plug, 373, 396 

 female prostate, 374 

 implantation 



lactation delay, 851 

 orientation of blastocyst, 855 



