276 Index 



Fishing for sale, 254, 255 

 Fleming, W. W., 176 

 Flint, W. P., 241 

 Food chain, 119 

 Food conversion, 72 

 Forage ratio, 118 

 Forbes, Prof. Stephen A., 



fish, natural loss of, 4 

 Ford, J. R, 108 



Fork Lake (Illinois), 65, 87, 110 

 von Frisch, K., 221 

 Fry, F. E. J., 46, 227 

 Fungi, aquatic, 



infestations of, 200 



toxins cause death of fish, 201 



Gale Lake ( Illinois ) , 



partial winterkill in, 53 

 Gambusia, 



appearance in S. Africa, 81 

 Garlick, Dr. Theodatus, 



hatchery operation before 1865, 3 

 Gerking, S. D., 234, 235 

 Glaeotrichia, 171 

 Goldfish, 



competition for space, 120 



release of, in lakes, 113 

 Gravel pit lakes, 



characteristics of, 24 



planning for recreation in, 24 

 Green, Seth, 



hatchery operation before 1865, 3 

 Greenbank, J., 230 

 Grid pattern 



for spreading rotenone, 145 

 Griffin, D. R., 236 

 Growing season, 69 

 Growth, 



abnormalities of, 89 



indeterminate, 79 



interpretation of, from scales, 85 



in new waters, 81 

 Growth, rate of, 82 



factors affecting, 82 



genetic potential, 82 



length of growing season, 82 

 Guppies, 



release of in lakes, 113 



Habitat, aquatic, 



biological environment of, 42 



components of, 42 

 Hansen, D. F., 135, 230, 239 

 Hansen, D. F., Bennett, G. W., Webb, 



R. J., and Lewis, J. M., 195 

 Harvest, fish, 



increase in, for reservoirs, 12 



"Harvestable surplus," of bass, 193 

 Hasler, A. D., 217, 237 

 Hasler, A. D. and Bardach, J. E., 231 

 Hasler, A. D. and Einsele, W. G., 167 

 Hasler, A. D., Horrall, R. M., Wisby, 



W. J., and Braemer, W. B., 217 

 Hasler, A. D. and Wisby, W. J., 222 

 Hatcheries, 



fish produced in, 5 



importance in minds of fish culturists, 5 



origin of, from Europe, 3 



"paper fish" of, 3 



purpose of introduction in U. S., 3 

 Hatchery, movement, 



success of, 5 

 Hayes, F. R. and Livingstone, D. A., 143 

 Hazzard, A. S., 258 

 Hearing, 218 



range of tone perception, 218 

 of bluegills, 218 

 of carp, 218 

 Hederstrom, H., 5 



growth rings on fish vertebrae in 1759, 

 5 

 Heptachlor, 148 



Hess, A. D. and Swartz, A. N., 118 

 Hey, D., 43 



"Hibernation" of Centrarchidae, 230 

 Homing, 



definition of, 234 



fish that show, 235 



sensory perception as related to, 236 

 Homing and home range, 234 

 Houghton Lake (Mich. ), 93 



predation on pike fry, 93 

 H.T.H. ( calcium hypochlorite ) , 141 

 Hubbs, Carl L., 6 



Hubbs, C. L. and Gooper, G. P., 85 

 Hutchens, Lynn H., 244 

 Huttel, R., 221 

 Hybridization, 



among sunfishes, 101 



in Gyprinids, pikes, and sunfish, 99 

 Hyperactivity as a lethal factor, 233 



Ice fishing, 194 



extent of, 194 



more successful in January and Febru- 

 ary, 239 

 Ictaluridae, 



restricted movement of, 235 

 Illinois River (111.), 



commercial yield of fish in 1908, 3 

 Illinois State Fish Gommission, 4 



fish, rescue operations, 4 

 Insecticides, 



toxicity to fish, 57 



