Index 279 



Poisoninc;, partial (Cant.) 



timing of, 151 



to relieve stunting, 153 



weakness of, 152 

 Poisoning, spot, 137 



methods of, 137 

 Ponds, 



carp, 2 



definition of, 20 

 Ponds, farm, 



number of, in U. S., 17 



planning of, 19 



purposes of, 17 



requirements of satisfactory, 18 



simplest aquatic habitat, 17 



water problems of, 19 

 Pond research unit, 



in Alabama, 8 

 Pond-season, 191 

 Pollution, 



chemical, 43 



organic waste, 43 



sewage as a pond fertilizer, 43 



silt, 43 

 Populations, 



as units, 7 



estimation of, 181, 182 



estimation of by effort-catch relation- 

 ship, 182 



estimation of by recapture of marked 

 fish, 181 



forces acting on, 182 



reducing undesirable fish in, 12 



Russell's interaction of factors, 182, 

 183 

 Populations, roving, 



in streams and lakes, 234 

 Positive ions, 



for neutralizing elec. charges of clay 

 particles, 47 

 Potamogeton foliosus, 176 

 Prather, E. E., 260 

 Predation, 



bass on bluegill eggs, 103 



effects of curtailment of, 117 



minor on 2 + fish, 200 



of crappies on bass, 107 



role in fish management, 115 

 Predators, 



behavior of, 116 



controlled by prey species, 117 



evolution of, 115 



of small fishes, 116 



types of, 116 

 Production, fish, 71 



as related to vield and standing crop, 

 72, 73 



definition of, 71 



estimation of, 74 



loss of, from aquatic veg., 172, 173 



of smalhnouth l:)ass, 186 

 Productivity, biological 



alkalinity in, 38 



chemical indicators of, 38 



lake size in, 39 



nutrient material, function of, 38 



sulfates in, 39 

 Pumpkinseed, 



average number fry per nest, 93 



mortality rate of, 207 



standing crop of, 64 



Quarry lakes, 



characteristics of, 27 



origin of, 27 

 Quillbacks, 



standing crop in pounds per acre, 64 



Rawson, D. S. and Ruttan, R. A., 106 

 Recreational lakes, 



cost accounting of, 28 



development of, 29 

 Reelfoot Lake (Tenn. ), 



history of commercial fishing in, 198 

 Reproduction, 



channel catfish unsuccessful in ponds, 

 103 



flathead catfish unsuccessful in ponds, 

 103 



potential of fishes, 92 

 Reproduction, competition, and preda- 

 tion, 



interrelationships of, 91, 124 

 Reproduction potential, 



natural production of young, 93 

 Rescue, of fish, 



on Illinois River, 4 



uselessness of, 4 

 Reservoirs, 



cycles of production, repeated, 11 



developmental future of, 13 



fishing cycle in, 10 



as aquatic deserts, 9 



early investigations of, 9 



management, and phases of operation, 

 11 



renovation of, 10 



water supply, ro tenoning fish in, 12 

 Responses of fish to angling, 189, 237, 



238, 243 

 Rice-fish fanning, 



crop rotation, 264 



largemouth bass production in, 264, 

 265 



