Soft-shell clam (Mya arenaria) survey of Cole Harbour, Nova Scotia - 1984 / by P. Woo. : Fs97-4/2090E-PDF

"An assessment of the soft-shell clam (Mya arenaria) stock in Cole Harbour, Nova Scotia, was carried out in 1984. At the time of the survey, one area of the Harbour was legally open for shellfish harvesting and another was legally closed due to fecal coliform contamination. On the various flats of the open area, the standing stock of recruits 44-49 mm ranged between 0.01-1.8 t, and those >50 mm ranged between 0.09-10.7 t, totalling 7.6 and 32.1 t, respectively, and 39.8 t combined. On the flats in the closed area, the standing stock of recruits 44-49 mm ranged between 0.03-12.1 t, and those >50 mm ranged between 0.3-26.3 t, totalling 12.6 and 29.4 t, respectively, and 42.1 t combined. Total standing stock >44 mm for combined open and closed areas was 81.9 t. Growth rate analysis indicated that soft-shell clams reach a 44 mm shell length in approximately 5.2 yr and a 50 mm shell length in approximately 6.0 yr. Isopleths of clam density are presented for each area and indicate spatial overlap in the distribution of clams within the different shell length categories"--Abstract, page iv.

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