By Brian Spencer
Because the world’s inhabitants and the call for for seafood elevate, the creation of seafood from aquaculture has additionally obvious substantial raise and is decided to proceed. With wild shares of many molluscan species depleted, aquaculture is firmly recognized because the capability now, and for the longer term, of bridging the space among the availability and insist of seafood.This very important booklet covers the final biology of bivalves, hatchery tradition tools and particular and finished information of the cultivation of many commercially very important species, together with clams, oysters, mussels, scallops and abalone. in keeping with the author’s wide event and fingers on examine into this topic, Molluscan Shellfish Farming offers crucial info for all serious about the tradition of molluscs. The ebook should be rather invaluable for aquaculture team of workers on operating fish farms and in educational study posts. Libraries in all universities and learn institutions the place aquaculture and organic sciences are studied and taught must have copies of this publication available.Part of this e-book relies on a Buckland Lecture, backed by way of the Buckland Trustees
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Additional info for Molluscan Shellfish Farming
After 250 pond-years of experience and 18 Molluscan shellﬁsh farming with three-quarters of the ponds productive, the yield has been about 2 million 5-mm spat per pond, providing sufﬁcient spat for a yield of around 100 t marketable oysters per year. Despite a setback in 1987 when Bonamia wiped out most of his stock, conditions have improved to allow him to pursue the method once again. Depuration systems Although these systems are a great technological beneﬁt to the industry, their need could easily be classiﬁed as a constraint, since without sewage discharge into the marine environment there would be no need for depuration.
In 1973, a Working Group of the International Council for the Exploration of the Sea (ICES) produced guidelines and a code of practice for the ‘Introduction of Non-indigenous Marine Species’ for member countries. This has been revised periodically, most recently in 1994, to take into account genetically modiﬁed organisms. The guidelines are: 16 • • • • • • • Molluscan shellﬁsh farming consider ecological consequences; review historical documentation of past introductions; seek advice from ICES on a particular introduction; adopt code of practice and report progress; develop legislation controlling introductions; propagate under quarantine in a hatchery; examine offspring for disease/parasites/pests before transfer to the sea.
Ministry of Agriculture, Fisheries and Food, Her Majesty’s Stationary Ofﬁce, London, England. SOAFD (1998) Scottish Shellﬁsh Farms. Annual Production Survey for 1997 (ed. D. I. Fraser). Scottish Ofﬁce, Agriculture, Environment and Fisheries Department, Marine Laboratory, Aberdeen, Scotland. Spencer, B. E. (1996) Clam Cultivation: Localised Environmental Effects. Ministry of Agriculture, Fisheries and Food, Directorate of Fisheries Research, Fisheries Laboratory, Conwy, Information Pamphlet. Thain, J.