1590 



SUBJECT INDEX 



Reptiles (conf.) 



ovulation, 1049-1050 



penis, 1042 



pseudohermaphroditism , 1065 1067 



releasers, 1260 



seminal plasma, 376 



sex differentiation, gonadal hormones and, 



1067-1069 

 sex reversal, gonadal hormones and, 1067-1069 

 sperm 



duration of fertilizing capacity, 739 

 hyaluronidase concentration, 829 

 storage in female, 1055-1056 

 territoriality, breeding cycle and, 1250 

 testicular interstitial cells, seasonal changes, 



1039 

 viviparity, 1058 

 Retrieving behavior (see also Parental behavior), 

 1313-1321 

 age of young and, 1319 

 comparison with nest-building behavior, 1317- 



1318 

 during pseudopregnancy, 1315 

 estrogen and, in rat, 1316, 1317 

 external stimuli and, 1317-1320 

 hormones and, 1315-1317 

 hypophysectomy and, 1315, 1317 

 mouse, estrogen and, 1317 

 prolactin and, 1317 

 rat 

 experience and, 1337 

 progesterone and, 1316, 1317 

 prolactin and, 1316, 1339 

 testosterone and, 1316 

 thyroid and, in male, 1316 

 sex dimorphism, 1314 

 specificity, 1319-1320 

 stimuli-eliciting, 1318-1320 

 stimuli from the young and, 1317-1318 

 temporal relation 

 to lactation, 1315 

 to nest -building, 1315 

 to parturition, 1314-1315 

 thyroidectomy and, 1317 

 Rhacophonis schlegelii, gonad transformation in 



female, androgen and, 92, 93 

 Rhinencephalon, and ovulation in rabl)it, 523 

 Rhineodon typus, oviparity, 1057 

 Rhinoceros, pregnancy, length, 961 

 Rhinocerus, black, pregnancy, length, 961 

 Rhodeus 



corpus luteum, 1058 

 nuptial coloration, androgen and, 1046 

 Rhodeus amarus, ovipositor, response to steroids, 



1053 

 Ribonucleoprotein, histochemical differentiation, 



888 

 Ring chromosomes, and sex mosaics in Drosophila, 



21-22 

 Ring dove (see also Dove) 



aggressive behavior, androgen and, 1254 



breeding season, 1353 



egg-laying 



presence of male and, 1279 

 suppression by eggs in nest, 1283 

 estrogen secretion bv female, courtship by male 



and, 1276, 1281 

 follicle-stimulating hormone secretion l)y fe- 

 male, courtship by male and, 1281 

 hybridization with pigeon, 48 

 imprinting, 1357 

 incubation 



and secretion of prolactin, 1296 

 by male, 1286 



Ring dove (cont.) 

 incubation (cont.) 

 estrogen and, 1293 

 experience and, 1340 

 pattern, 1284 



progesterone and, 1102, 1293, 1340, 1353 

 prolactin and, 1129, 1290-1291 

 temporal relation to egg-laying, 1285 

 testosterone and, 1292 

 luteinizing hormone secretion by female, nesting 



material and, 1281 

 masculine behavior by female, 1279 

 mating behavior, 1175 

 experience and, 1215, 1340 

 male, testosterone and, 1353 

 nest -building 



androgen and, 1275 

 courtship by male and, 1276 

 estrogen and, 1274, 1275, 1276, 1293 

 experience and, 1334, 1335, 1340 

 temporal relation 



with copulation, 1271 

 with follicle growth, 1274 

 oviduct, estrogen -progesterone and, 1125 

 ovulation, nesting material and, 1281 

 parental behavior, prolactin and, 1299-1300 

 progesterone secretion bv female, nesting mate- 

 rial and, 1281 

 Riparia riparia 



aggressive behavior, breeding season and, 1253 

 gonads, during incubation, 1291 

 incubation 

 patch, 1288 

 role of the sexes, 1303 

 maturation of behavior, parental care and, 1357 

 nest, location, 1270 

 nest-building 



during incul)ation, 1272 



temporal relation to follicular growth, 1274 

 neurohypophysis, blood supply, 1099 

 parental behavior, role of the sexes, 1303 

 territoriality 



breeding season and, 1252-1253 

 meteorologic conditions and, 1246 

 RiHsa lri(lucti/J(i, parental behavior, 1353 

 RXA (Hihonuclcic acid) 

 Rorriis. hennai)liro<litism, 1063 

 Roccus saxatilis, spawning, seasonal occurrence, 



1036 

 Rodents 



bulbo-urethral glands, type, 368 

 female prostate, 374 

 identification of genetic sex, 55 

 implantation, orientation of blastocyst, 855 

 male accessory reproductive glands, and homo- 



logues in female, 368 

 mother-young relationships, 1352 

 nest -building patterns, 1305 

 parental behavior, retrieving, 1314 

 parturitive behavior, 1310, 1312 

 placenta 



alkaline i)h(.spha1ase distribution, 938 

 cyt()i)lasniic basophilia, 937 

 heniotiophic transjjort, 909 

 placental barrier, 916 



placental transmission, manner of, 947-948 

 placental transport, sodium, 944 

 placental type, 908 

 prostate, structure, 369-371 

 uterine glands, cytoplasmic basophilia, 937 

 yolk sac placenta, 909, 917 

 alkaline phosphatase in, 938 

 Rotifers, sperm, penetration of somatic tissues, 

 744 



