274 Index 



Centrarchidae, 



restricted movement of, 235 

 Chautauqua L. (Illinois), 124 

 Childers, W. F., 231 

 Chlordane, 148 



Chlorinated hydrocarbon insecticides, 148 

 Chlorothion, 148 

 Ciampi, E., 245 

 Clark, M., Ill 

 Clay particles, 



neutralizer for electrical charges of, 47 

 Clear Lake (Lake Co., Calif.), 209 

 Clear Lake (Iowa), 124, 234 

 Combinations of fishes, 107 

 Commission, U. S. Fish, 



fish propagation duties in 1872, 3 

 Competition, 118 



for food, 118 



for specific habitats, 123 



inter- and intraspecific, 123 



on feeding and spawning grounds, 185 



for space, 119-120 



for space, experiments on, 120 



for space, inhibitory factor of Swingle, 

 120 



for space, substance destroys B^^, 121 

 Condition, 76 



coefficient of condition, K, 76 



conversion factors for, 78 



cycles of, 78 



factor of Cooper and Benson, R, 78 



factor of E. M. Corbett, C. F., 77 



index of condition, C, 76-77 



methods of measuring, 76 



uses in management, 79 



vs. rate of growth, 79 

 Coelosphaerium, 171 

 Cooper, G. P., Ill 

 Copper sulfate, 



as an algicide, 172 



as a fish irritant, 135 

 Coregonidae, 



restricted movement of, 235 

 Costs of fishing, 252 

 Coyote Creek (Oregon), 



pollution, 47 

 Crappie, 



cycle dominated by, 8 



cycle in L. Senachwine, 124 



floating dock fishing for, 262, 263 



length of life of, 202 



number of eggs of, 92 

 standing crop of, 64 



with bigmouth buffalo, 63 

 Crappie, black, 



activity periods of, 231 

 cycle of, 124 



killed by supersaturation of Oo, 55 



minimum useful size of, 71 



mortality rate of, 207 



overfishing of, 190 

 Crappie, white, 



activity periods of, 231 



cycle of condition of, 78 



disappearance of year class in summer, 

 55 



minimum useful size of, 71 



survived winterkill in Gale Lake, 53 

 Crayfish, 



as underwater scavengers, 201 

 Crowding, 



effect on number of eggs, 121 

 Culture, fish, 



as farm crop, 2, 3 



Chinese, 2 



classical, 2 



European pond-fish, 2 



relation to management, 2 

 Cycles, 



crappie-dominated, 8 



feeding of fish, 196 



in Lake Senachwine, 7 

 Cycles, fishing, 



of reservoirs, 196 

 Cycle, of use, 



of a resource, 208 



Daily activity, 



in black and white crappies, 231 

 Dale Hollow, 



dam and outlet of, 36 

 Dale Hollow Dam, 



water release program of, 36 

 Dangers to ponds, 



crayfish and burrowing rodents, 56 

 Dangers to ponds and lakes, 



insecticides, 57 



wind action, 56 

 DDT, 148 



as a fish poison, 147 



toxicity of, 147 

 Deaths, natural, 



causes for, 199 



time of, 200 

 Deep Lake (Oakland Co.), Mich., 92 

 Denis, 142 

 Detergents, 



composition of, 44 



effects of, 44 



toxicity of, 44 

 Devonian Period, 91 

 Dieldrin, 148 

 Diet, maintenance, 123 

 Dipterex, 148 



