TENNESSEE (Cont. ) 



2. Annual Fall Fish Population Inventory of TVA Reservoirs. 



Information is collected on the success of reproduction and survival of young, growth 

 and size distribution of different species, available food for game fish, trends in 

 relative abundance of species, and the presence or absence of certain species. 

 Small areas, 1 to 5 acres, are treated with rotenone and all fish from the area 

 are removed, separated to species, counted, weighed and measured, and scale 

 samples taken. 



Reservoirs in the Tenn. Valley; Hdqtrs. at Decatur, Ala. , and Norris, Tenn. ; began: 

 Decatur - 1945; Norris - 1949, continuing; L. F. Miller, TVA, Decatur; C. J. 

 Chance, Norris. 



Address correspondence to: Dr. A. H. Wiebe, Chief, TVA Fish and Game Branch, 

 Norris, Tenn. 



3. Fish Harvesting on TVA Reservoirs. 



Fish are netted, caught by hook and line or removed from sinkholes and tagged with 

 monel metal jaw tags to indicate extent of harvest, movement of species and to 

 gain an idea of changes in population. These investigations are carried out on 

 both storage and mainstream reservoirs, but not on all reservoirs simultaneously. 



Storage reservoirs: Norris, Cherokee, Hiwassee, Nottely, Watauga, and South 



Holston. Mainstream reservoirs: Fort Loudon, Gunter sville, and Wheeler; 



began in 1945, continuing; Storage reservoirs: C. J. Chance, TVA, Norris, Tenn.; 



Mainstream reservoirs: L. F. Miller, TVA, Decatur, Ala., Leaders; published 



reports available. 

 Address correspondence to: Dr. A. H. Wiebe, Chief, TVA Fish and Game Branch, 



Norris, Tenn. 



TEXAS 



U. S. Fish and Wildlife Service, Branch of Game-fish and Hatcheries 



1. Glass "V" Trap Experiments. 



A fry and fingerling trap was developed at the San Marcos, Texas, Station. This 

 trap uses "V"-shaped openings of glass instead of wire cloth. The object of 

 experiments conducted in 1952 was to evaluate the trap's utility in harvesting fish 

 crops irom hatchery ponds and collecting forage species for feeding adult bass. 

 Of the ponds in which traps were used, over 50 percent of the total production 

 was removed by trapping. 



Began in 1951, planned for 3 years; F. C. Richan, Supt. ; reports available. 

 Address correspondence to: Regional Dir. , U. S. Fish and Wildlife Service, 

 P. O. Box 1306, Albuquerque, N. M. 



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