MISSOURI (Cont. ) 



Vicinity of Columbia; Conservation Connmission and Univ. of Mo. cooperating; began 

 in 1952, planned for 3 years; Robert S. Canipbell and John D. Parsons, Project 

 Leaders. 



Address correspondence to: Dr. Roberts. Campbell, E. Sydney Stephens Hall, 

 Univ. of Mo. , Columbia, Mo. 



7. Age and Rate of Growth of Several Species of Fishes. 



Standard techniques are employed in studying age and growth rates on channel cat- 

 fish, bluegill and largemouth bass. This information is to serve as basic data 

 for fisheries management. 



Reservoirs and rivers in Missouri; Conservation Commission and Univ. of Mo. 



cooperating; began in 1951, planned for 2 years; Robert S. Campbell, Richard 



Marzolf, Theodore Lane, and Hudson M. Nichols, Project Leaders; papers now 



being prepared for publication. 

 Address correspondence to: Dr. Robert S. Campbell, E. Sydney Stephens Hall, 



Univ. of Mo. , Columbia, Mo. 



MONTANA 

 Department of Fish and Game 



1. Grayling Study (FA: F-2-R). 



All aspects of grayling ecology in the study streams are being investigated to de- 

 termine the importance of various habitat characteristics. Competition for food 

 between grayling and trout, effect of water diversion, and grayling-beaver 

 relationships are under study. Population studies will be made before and after 

 the opening of the fishing season, with a mid-season check in July. Suitable 

 spawning territory appears to be very limited in this drainage, therefore, a 

 special effort is being made to determine the habitat requirements for successful 

 spawning. 



Red Rock Creek drainage; began June 1951, planned for 2 years; $2,882. 

 Address correspondence to: Perry H. Nelson, Project Leader, Zooloty and Ento- 

 mology Dept. , Mont. State College, Bozeman, Mont. 



2. Effects of Irrigation Diversions on Stream and Lake Fish Populations (FA: F-3-R). 



Experiments are being made with devices intended to prevent the entry of trout into 

 irrigation canals from the west Gallatin River. Electric shockers will be em- 

 ployed to estimate the fish population before and after the use of experimental 

 structures. Measures of water volume and velocity, temperature, and direction 

 flow are recorded in relation to the general experiments. The study continues 

 a statewide survey of fish loss in irrigation canals with emphases on particular 

 problem areas. 



Statewide; Electrical Engineering Dept. of Mont. State College cooperating; began 



June 1950, planned for 3 years; $8, 380; William D. Clothier, Jr. , Project Leader. 

 .Address correspondence to: Montana State Fish and Game Dept. , Helena, Mont. 



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