374 



Subject Index 



Norwa}^ Rat (see also rat, Rattus), 87, 180, 

 195, 320, 323 



adrenalectomized, 202 



adrenal weight, 266, 301 



behavioral sink development by, 92 



body-adrenal relationships, 247 



domesticated, 163, 175 



inhibition of reproduction, 307 



intra-uterine mortality, 221 



laboratory, 195 



relationships between population den- 

 sity and reproduction, 310 



reproductive depression, 291 



resorption of the embryos, 221 



responses to sociopsychologic factors, 

 269 



rural population, 302 



social competition, 273 



sociopsj'chologic interactions, 280 



subordinate males, 265 



wild, 179, 183, 195, 265 

 Number 



total of individuals, 110 



Oak, 64 



Ondatra (see also muskrat), 323 



relationships between population den- 

 sity and reproduction, 310 

 Ondatra zibethica 



reproduction, 317 

 Open-field emotional behavior, 89 

 Orders, 122 

 Organ 



isolated, 191 

 Ornithorhyn chics, 195 

 Oryciolagvs, 193, 323 

 Os penis 



stimulation, 212 

 Ovary, 194 

 Ovaries 



androgens, 220 



Pan, 195 

 Pancreas, 260 

 Pancreatic islets, 240 

 Pantothenic acid 



deficient, 222 

 Parasitism, 322 

 Parotid. 260 



Particle 



basic, 2 



general classes, 3 

 Partner 



choosing of, 154 



data regarding the choosing of, 156 

 Perception, 89, 139 

 Perodicus potto, 195 



Peromyscus, 29, 30, 31, 32, 33, 34, 35, 36, 

 52, 53, 54, 55, 61, 64, 66, 67, 68, 69, 

 70, 75, 76, 77, 78, 79, 80, 88, 323 

 Peromyscus boylii 



inhibition of reproduction, 307 

 Peromyscus leucopus 



pituitary-adrenocortical, 273 



population, 305 

 Peromyscus maniculatus 



inhibition of reproduction, 307 



lice, 322 



productive cycle, 319 

 Personality, 158 

 Phagocytosis 



inhibition, 210 

 Physiologic adaptation 



generalized effects, 254 

 Physiology 



classical, 184 



evolution, 60 



reproductive, 95 

 Pigs, 194 

 Pine, 64 

 Pineal, 204 



Pipistrellus (see also bat), 193 

 Pitressin, 214, 232 

 Pituitary 



anterior, 197, 220 



antidiuretic, 241 



gonadotropins, 257 



hormones, 218 



lipid mobilizing factor, 241 



posterior, 241 



secretion of aldosterone, 203 

 Pituitary-adrenocortical exhaustion, 226 



tumors, 218 

 Pitymys, 32, 52, 64, 66, 69, 70, 76, 196 

 Pitymys subterraneus, 196, 197 

 Population, 189 



collapse, 314 



densities, 190, 238 



fertility, 290 



