. Addresses delivered at the Convention of the National Shellfisheries Association. Shellfish fisheries. - 182 - Figure 1 shows a series of calculated growth curves for our experi- mental plantings on the tide flats of Delaware Bay at our Cape Shore Laboratory, Each of these curves is bases on data for the single season indicated. It is apparent that the gro^vth rate observed in 19li7 has not since b^en equalled. The variation in growth rate from season to season at this location may be illustrated by listing the times required to produce "medium clams from 10 gram seed if a succession of
. Addresses delivered at the Convention of the National Shellfisheries Association. Shellfish fisheries. - 182 - Figure 1 shows a series of calculated growth curves for our experi- mental plantings on the tide flats of Delaware Bay at our Cape Shore Laboratory, Each of these curves is bases on data for the single season indicated. It is apparent that the gro^vth rate observed in 19li7 has not since b^en equalled. The variation in growth rate from season to season at this location may be illustrated by listing the times required to produce "medium clams from 10 gram seed if a succession of similar seasons obtained: 19h7 - h years 19U8 - 8 years I9U9 - 6 years 1950 - 5 years The composite grovrth curve obtained by combining the data for these four seasons closely approximates the 1950 curve (figure 2), In a succession of years like the four shown, l50-gram clams irould be obtained from ^0- gram seed in Ji" seasons. CAPE SHORE COMPOSITE GROWTH CURVES 1947-8-9-50. 3 4 5 6 YEARS AFTER PLANTING Figure Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original National Shellfisheries Association. Convention; U. S. Fish and Wildlife Service. Washington : Published for the National Shellfisheries Association by the Fish and Wildlife Service, U. S. Dept. of the Interior
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Keywords: ., bookauthorusfish, bookcentury1900, booksubjectshellfishfisheries
