live-weight basis) of crawfish in the 1973-74 season. Prices 

 paid and received, processor activity, utilization of capacity, 

 expansion interest and other survey results are discussed. Ponds 

 accounted for aoout one-third of their purchases. rthile 42,000 

 acres of ponds were farmed, it is estimated that 100,000 acres 

 could be, and that with potential yields obtained in the survey, 

 good management and optimum conditions, ponds alone could supply 

 some 100 million pounds. 

 Subject descriptors: 

 Crawfish; crayfish; survey data; productivity; processing; prices 



127 



Fujimura, Takuji. 



1972. 



Development of prawn culture industry. 



Proceedings, Kauai Aquaculture Conference, Hawaii Dep. Planning 



Econ. and Kauai County Off. of Econ. Dev., pp. 5-13. 



During 5 years of researcn effort, costs of producing stockaDle 



size juveniles (about 1 cm in average length) were reduced from 



$6.63 to $1.93 per 1,000, not counting fixed costs. Also, a 



practical mass culturing technique was developed and a breeding 



stock was established to supply commercial needs. Topics include 



rearing trials and problems; growth rates; feeding, culling, 



cover-plant, and harvesting practices; yield, feed, survival, 



timing, and other data. Small (0.20 to 0.36 ha) ponds with mud 



or earth bottoms were used for rearing, and yields reached 3,820 



kg/ha or 3378 lb/acre annually. The conversion ratios of weight 



of feed to weight of prawn were in the 3.3 to 3.4/1 range; feed 



consisted of chicken feed and fresh whole fish, and other feeds 



on an experimental basis. 



Subject descriptors: 



Prawns; techniques; biology; experiment; costs; research; 



biological feasibility; development. 



128 



Garino, David P. 



1972. 



Commodities-shrimp farming attracts new interest as demand 



outpaces supply, lifts prices. 



Wall St. J., April 3, 1972, p. 18. 



Because of the relatively faster growth in demand compared to 



supply, shrimp prices are increasing, and some researchers 



expressed the hope that the fledgling shrimp farming industry may 



someday slow the rate of price increase. Interest and activity 



of several large companies are indicated (e.g., Dow Chemical, 



Ralston Purina, and San Diego Gas S Electric, as well as 



Marifarms) , but some companies (e.g., Greyhound's Armour & Co. 



subsidiary) withdrew as costs mounted. Some of the formidable 



obstacles to profitable operation and industry success are 



mentioned, such as shrimp survival, cultural methods generally, 



feeding, R&D, proper scale of operation, and water temperature 



58 



