technology is confined to application in coastal and brackish 

 waters. A quantitative impact analysis of economic and social 

 factors is shown for the years 1975-1989. Various action options 

 are posed. The problems and constraints to accelerated 

 mariculture application are analysed, and a forecast of 20 

 million tons of mariculture production in 1985 is made. 

 Subject descriptors: 



Methodology; model; forecasts; evaluation; economic development 

 role. 



224 



MacCrimmon, H. R.; Stewart, J. E.; Brett, J. R. 



1974 



Aquaculture in Canada--the practice and promise. 



Bull. Fish. Res. Board Can. No. 188, 84 pp. 



Some forms of aquaculture have existed in Canada for many years 



on a small scale. This Bulletin reviews the current practices 



and identifies opportunities for establishing a substantial and 



viable industry based upon freshwater fisheries, marine fishes, 



and invertebrates. It focuses on the scientific and technical 



basis for such an industry and on the constraints to be 



encountered, and identifies areas that need experimental 



development to provide pilot-scale production data and economic 



assessments. (Authors' abstract. See G. I. Pritchard for 



comments relating to the same seminar where the authors 



originally presented their work.) 



Subject descriptors: 



Canada; outlook; constraints; general description. 



225 



Milne, P. H. 



1973. 



Development of fish farms in Japan. 



Fishing News Internatl. 12(12): 17-20, 23-24. 



Japanese aquaculture output grew from 94 kilotons in 1951 to 340 



kilotons in 1961 and to 608 kilotons in 1971 when it accounted 



for 6.7% of the total fish catch. Seaweeds accounted for half of 



the 1971 weight of output, and oysters, 200 kilotons, with the 



remainder consisting of yellowtail, prawn, sea bream, abalone, 



and octopus. Government assistance of various sorts is provided 



to the 29,000 fishermen involved (out of total of 550,000 in 



Japan) . Additional information is provided on the several 



species. 



Subject descriptors: 



Japan; production data; government assistance. 



103 



