The growth of the cultured scallops, Patinopecten yessoensis
1981
Yoo, S.K. | Ryu, H.Y. (National Fisheries Univ. of Busan, Busan (Korea R.). Dept. of Aquaculture)
The seedlings of the scallop, Patinopecten yessoensis, collected in April 1980, April 1981 and May 1981, and the grown-up scallops collected in the sea bottom in November 1979, were reared by hanging method up to the July 1981. The growth of the seedlings collected in April 1980 was greatly affected by the time of the seedling collection, manipulation of the net cage, density in the net cage and the annual water temperature fluctuation. The scallops reared from the spat collected in April 1980 reached the sizes of 0.33 mm, 1.23 mm, 29.34 mm and 59.59 mm in shell length in 40, 75, 285 and 450 days respectively. Since then, growth rate was determined as follows based on the age estimated by the year rings on the shell: 84.96 mm in 19 months, 99.3 mm in 31, 112.3 mm in 37 and 113.64 mm in 43 months. The meat and the adductor muscle weight increased with the shell length. The meat weight reached about 15 g when the shell length was 60-70 mm and about 94.13 g when 130-140 mm, and the adductor muscle weight reached about 4.89 g when the shell length was 60-70 mm and about 39.59 g when 120-130 mm. The growths of the meat and the adductor muscle weight were stagnant after scallops reached 125 mm in shell length.
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