Subject Index 



323 



Pharyngeal glands, in bees, 233, 235, 237, 



238, 239, 244 

 Physiological function, stability of, 135 

 Pike, lifespan of, 222 

 Pike-killie, lifespan of, 224 

 Pilotfish, lifespan of, 221 

 Plaice, fecundity of, 202-206 



growth of, 157, 158, 159 



lifespan and size of, 1 50 



mortality rates of, 167 



reproduction and growth in, 189-190 

 Pleuronectes platessa, fecundity in, 202- 

 206 



growth of, 157, 158 



reproduction and growth in, 189-190 

 Pleuronectoidei, lifespan and growth of, 

 161-166 



lifespan and size of, 148 

 Poeciliidae, reproduction and age in, 181, 



186-189 

 Pollen, content of, 237 



eflfect on bees, 236-240 

 Pompano, lifespan of, 220 

 Porcupine fish, lifespan of, 221 

 Porgy, hfespan of, 221 

 Poultry, arteriosclerosis in, llO, 113 

 Procellariiformes, mortality rate of, 101 

 Protein, effect on bees, 234, 254 



effect on Drosophila, 266-267 



in diet, 252-254 



in pollen, 237. 238 



storage in bees, 237, 238, 239 



utilization of in fish, 210 

 Psittaci, arteriosclerosis in, 108-109, 110 

 Pudding wife, lifespan of, 221 

 Puffer, lifespan of, 221 

 Pygosteus pungUius, growth of, 156, 157, 



158 



Quillback, lifespan of, 222 



Rabbits, cottontail, lifespan of, 97 

 Rajiformes, lifespan and size of, 154, 220 

 Rangifer articus, lifespan of, 92-94 

 Rasbora, lifespan of, 224 

 Rats, brown, lifespan of, 95-96 



causes of death of, 82-83 



disease in, effect on lifespan, 72-89 



efiFect of diet on, 78, 251-252, 254, 265, 

 268 



kangaroo, lifespan of, 96 



lifespan of, 95-96, 251-252 



lung disease in, 82 



nephrosis in, 83 

 Rattus rattus, lifespan of, 95-96 

 Ray, lifespan and size of, 154, 163, 221 

 Red hind, lifespan of, 220 



protein metabolism in, 183-185 

 Regeneration, in guppies, 208-210 

 Reproduction, effects of age on in fish, 

 181-182, 186-206 



effect on Ufespan, 179, 275-279, 284- 

 285 



in fish, 170-174 



Roach, lifespan of, 222 



Rockfish, lifespan of, 220 



Rosy tetra, lifespan of, 224 



Rubner's theory of ageing, 125-126, 128 



Rudder fish, hfespan of, 221 



Sailfish, lifespan and size of, 154 

 Salivary glands, in bees, 233, 235, 237, 238, 



239 

 Salmo gairdneri, growth rates of, 182 

 Salmon, fecundity of, 192, 197-198 



growth of, 156, 157, 158 



lifespan of, 222 



hfespan and growth of, 160-166 



lifespan and size of, 150, 152 



mortality rates of, 145, 166 



natural death in, 174 



relation of size and maturity, 172 



reproduction in, 179 

 Salmonoidei, lifespan and growth of, 161- 

 166 



hfespan and size of, 150 

 Salmo salar, fecundity in, 197-198 

 Salve! in us alpinus, hfespan of, 147 

 Sand dab, lifespan and size of, 148 

 Sardina pilchardis, eflfect of environment 



on, 168 

 Sardines, effect of environment on, 168 

 Sanger, hfespan and size of, 154 

 Scandinavians, lifespan of, 21-26 

 Scat, lifespan of, 221 

 Scombroidei, lifespan and size of, 1 54 

 Sea horse, lifespan of, 147, 154 

 "Senile "death, in fish, 189 

 Sex differences, in growth of fish, 1 59 



in mortahty among fish, 145, 166-167 



in reactions to environment in fish, 

 178 

 Sex organs, changes in due to age in fish, 

 218 



in fish, 229 



relationship to body weight in fish, 

 193-196 

 Sexual maturity, eflfect of diet, 84-85 



in fish, 170-171 

 Shad, fecundity of, 191-192 

 Shark, lifespan of, 220 

 Sheep, hfespan of, 91-94 

 Sheepshead, lifespan of, 221 

 Shrews, lifespan of, 97 

 Siluroidei, lifespan and size of, 154 

 Size, eflfect on hfespan, 147-159 

 Skipjack, metabolism of, 170 

 Smelt, lifespan of, 147, 150 

 Snake-head, lifespan of, 224 

 Snapper, lifespan of, 221 

 Sole, hfespan and size of, 150 

 Sorex araneus, hfespan of, 97 

 Souslik, lifespan of, 97 

 Soya flour, effect on bees, 235 

 Spadefish, lifespan of, 221 

 Sparrows, lifespan of, 99 

 Sphenisciformes, mortahty rate of, 101 

 Sprat, lifespan and size of, 148 



