278 Index 



Moyle, J. B., 39, 63 



Mraz, D. and Cooper, E. L., 96, 121 



Multipurpose reservoirs, 



conflicting uses of, 23 



fishing below dams of, 23 



mode of operation of, 23 

 Murphy, G. I., 209 

 Muskellunge, 108 



for control of overpopulation, 108 



length of life of, 202 



"intelligence" of, 245 



spawning temp, of, 98 

 Muskellunge Lake (Vilas Co., Wise), 

 231 



National surveys of fishing and hunting, 



1955 and 1960, 251 

 Navigation pools, 22 



origin of, 22 



sudden draining, danger of, 22 

 Nodularia, 171 

 Norris Reservoir, 



COo, rapid change of, 48 

 North" R., 



carp culture, early, 2 



Observation, direct, 



by elritze in tanks, 217 

 Odor perception, 



as aid in homing, 224 



as aid in migration, 222 



fright reaction to, 221 



hypothesis for migratory ability, 222, 

 223 



identification of odors by, 222 



keenness of, for bluntnose minnows, 

 222 



migration of salmon, 222 



schooling by, 221 



theory of, 220 



uses of, 221 

 Odor perception and taste, 219 

 Olmsted, J. M. D., 220 

 OMPA, 148 

 Oncorhynchus ( salmon ) , 



die after spawning, 237 

 Onized Lake (Illinois), 74, 189, 244 

 Organic phosphorus insecticides, 148 

 Orientation, 



of white bass in L. Mendota (Wise), 

 217 



sun, 217 

 Overfishing, 



definition of, 189 



example of, 189, 190 

 Overpopulation, 



of crappies self-perpetuating, 107 



Overpopulation and stunting, 187 

 Oxidation ponds, 



sewage disposal in, 43 



stock waste disposal in, 43 

 Oxygen, 48 



as related to CO2, 48 



deaths of fish caused by low and high, 

 48 



tensions in bright sunlight, 48 



Para-oxon, 148 



Parathion, 148 



Patriarche, M. H., 52 



Patriarche, M. H. and R. C. Ball, 118 



Pay-as-you-fish ponds, 257 



Pearse, A. S. and Achtenberg, H., 232 



Perch, European, 



importation into S. Africa, 81 

 Perch, yellow, 



feeding migration of, 231 



lethal temperatures of, 227 



preferred temperature of, 228 



spawning temperature of, 98 



standing crop of, 64 

 Percidae, 



restricted movement of, 235 

 pH 



causes for changes of, 45 



efiFects on fish, 45 



range of, 45 



sulfates in stripmine waters, 45 



variations of, 44 

 Pigmentation, 



changeability of, 216 



control mechanism of, 216 

 Pike-bluegill combination 



in Nebraska, 108 

 Pike, 



hybrids of, 99 



standing crop of, 64 

 Pike, northern, 



killed by supersaturation of Oo, 55 



length of hfe of, 202 



minimum useful size of, 71 



predation on fry in Houghton L., 93 



sexual maturity of, 96 



shortage of prey for, 125 



spawning temperature of, 98 



stocked with bluegills, 108 

 see pike-bluegill combination 

 Plancic, J., 200 

 Plant dic-offs, 173 

 Podding of fishes, 230 

 Poisoning, partial, 150 



restocking after, 152 



shoreline vs. sectional, 152 



shoreline treatment, 151 



