Abstract
Weekly setting frequencies of oysters, bryozoans, barnacles, mussles, and flatworms were observed in Broad Creak, Talbot County, Maryland, during 1963, 1964, and 1965 on asbestos-plate collectors. Except for an early oyster set in 1965, all species set in greatest numbers at approximately the same time in a given year, but the height of the peak of setting intensity varied from year to year. Oysters and mussels were more abundant on the undersurface when collectors were 4 inches apart, and on the upper surface when they were 1 inch apart. Setting of barnacles, bryozoans, and flatworms was greater on the undersurface of all plates. In one year of testing (1963), oyster setting was similar on shells and plates. It is recommended that shells be planted in Broad Creek during the first week of July to catch seed oysters.
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