floating systems of fish culture as an appropriate use of inshore 



marine waters. 



Subject descriptors: 



Salmon; cage culture; general description; legal barriers. 



091 



Novotny, Anthony J. ; Mahnken, Conrad V. W. 

 1971. 



Farming Pacific salmon in the sea: from the "womb to the tomb." 

 Fish Farming Ind. 2(5): 6-9; 3(1): 19-21. 



The authors report various aspects of a 2-year biological study 

 on growing salmon in enclosed mesh cages, and indicate that the 

 system should prove to be commercially feasible. Topics include 

 the environment, feeds and feeding, fish transfer from freshwater 

 to saltwater and related variations among species as to 

 acclimation requirements, genetics and breeding work, survival 

 rates in the system developed, diseases, and floating pen design 

 (both nursery and growing pens) . The purposes of the study were 

 to determine coho salmon growth rates using specific dietary 

 conditions and to determine problems with the system described. 

 The study was made at the NMFS marine research station, 

 Manchester, Wash. 

 Subject descriptors: 



Salmon; cage culture; biology; experiment; biological 

 feasibility. 



092 



Richards, Jack A. 

 1968. 



An economic evaluation of Columbia River anadromous fisn 

 programs. 



Ph. D. thesis, Oreg . State Univ., 274 pp. 



Columbia River irrigation, flood control, navigation, and 

 recreation are important, often complementary products with 

 hydroelectric power, but dam and reservoir construction blocks 

 the migration of the anadromous fish. Costs of passage way, 

 hatchery, and related mitigating items are developed and 

 discussed in this thesis. Owing to the lack of appropriate 

 market prices as a basis of valuation, benefits of commercial 

 (including Indian) and sport fishing are estimated according to 

 specified methodology. Benefits and costs of the programs are 

 compared. Benefits for commercially caught fish are estimated on 

 the basis of the cost of regulated inefficiency. Benefits for 

 sport caught fish are estimated using transfer costs as proxies. 

 Conclusions are made concerning the economic justification of the 

 program in the 1930's and in 1965. 

 Subject descriptors: 



Salmon; hatcheries; benefit-cost analysis; method evaluation; 

 production data; demand analysis; costs; government assistance; 

 recreation demand; investment model. 



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