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TENDENCY IN THE WORLD PRODUCTION OF THE MOST IMPORTANT SPECIES OF OYSTERS
Josip Sudarević
; Saponia PJ "Dalmacijabilje", Dubrovnik, Republika Hrvatska
Sažetak
On the basis of the production analysis of the most important oyster species as well as the total oyster production in the world, the following conclusion can be made: 1. Out of 10 species of oysters statistically only 3 give 96% of the total oyster production. 2. The basic index of 998 as well as the average annual growth rate of 17,86 % was realized by the species Cupped oysters nei. The same species increased production from 16,000 in 1975 to 161, 240 tons in 1989 owing lo the wide range of production and to the greatest producer, France, that produced 81 % of the total production of the species in 1989. 3. The main place in the total oyster production is taken by the species Pacific cupped oyster, which realized 2/3 of the production in 1989. In the observed period the same species realized the absolute and the relative production growth at the average annual rate of growth of 3,4 %. 4. The species American cupped oyster was the only one of the three analized species whose production decreased at the average annual rate of change of 3,89 %. 5. The total oyster production has the increasing tendency (1,36 % - the average annual rate of growth ) in spite of the constant production decrease of the species American cupped oyster as well as the production decrease of the other seven species (the average annual rate of change - 7 ,13 %). 6. European countries have the greatest production per capita, but most of the world oyster production is located in the Far East where the greatest world producers are Japan, the Philippines, the Republic of Korea, Australia
Ključne riječi
Hrčak ID:
162502
URI
Datum izdavanja:
24.1.1993.
Posjeta: 545 *