20U 



Gates, John M. ; Matthiessen, George C. 



1971. 



An economic perspective. 



Thomas A. Gaucher, editor, Aquacuiture: a New England 



perspective. Univ. R.I., New Engl. Mar. Resour. Inform. Progr., 



pp. 22-50. 



Biotechnical and economic criteria are presented and applied for 



the selection of species with aquacuiture potential. The 



biotechnical criteria include environmental and intensive culture 



adaptability (ability to reproduce, egg and larvae hardiness, 



nature of food requirements, and growth speed) . The economic 



criteria include market price and volume, interregional 



competition, and competition from natural supplies. The market 



volume criterion reguires application of income and price 



elasticities of demand to see if a minimum $1 million increase in 



sales volume could be absorbed within 10 years. Rejection under 



the sales volume criterion is intended to suggest low aggregate 



payoff, although individuals could find the species profitable to 



culture. Several species with possible potential are then 



accepted or rejected for aguaculture in New England according to 



these criteria, which are suitable for application to other 



areas. 



Subject descriptors: 



Economic feasibility; biological feasibility; concepts. 



205 



Gates, J. M. ; Matthiessen, G. C. ; Grisom., C. A. 



1974. 



Aquacuiture in New England. 



Univ. R.I., Mar. Tech. Rep. Ser. No. 18, 77 pp. 



Topics include criteria for species selection, analysis of 



selected species, production costs, environmental and 



institutional considerations, summary and recommendations, and 



references. Biotechnical criteria include environmental 



adaptability (to New England condition) , and cultural 



adaptability (reproduction ability in captivity, egg and larvae 



hardiness, easily satisfied food requirements, and rapid rate of 



growth, after Ryther and Bardach, 1968). Economic criteria 



include market volume and price, minimum sales volume, market 



demand, interregional competition and natural-supply competition. 



Five selected species, American oyster, hard clam, bay scallop, 



silver salmon, and American lobster are analysed respecting 



supply, demand, and state of the art (reproduction, larvae 



rearing, juvenile rearing, food, major technical problems, and 



culture in the natural environment) . Production cost information 



is provided for salmon and lobster. 



Subject descriptors: 



Biological feasibility; economic feasibility; concepts; species 



selection; costs; New England. 



94 



