Arctica (Cyprina) islandica in Kiel Bay (Western Baltic): growth, production and ecological significance

摘要: Abstract The growth of the ocean quahog Arctica islandica L. was investigated with data from two sites Kiel Bay, Western Baltic. At experimental site “Benthosgarten” (BG), length-increment were obtained a colonization experiment and implanted resampled clams. “Millionenviertel” (MV), clams caught by dredging. Length-increment annual bands formed at surface shell. A Von Bertalanffy function fitted to both sets. Growth BG ( K = 0.35, L ∞ 60.6 mm ) different that MV 0.07, 93.6 ). parameters are assumed be strongly biased due set-up. population is similar Atlantic populations A. but maximum age length much smaller in Bay. P B ratio estimated 0.34, which results an production 15 g AFDW · m −2 this particular area. Total Bay ≈ 11000 t AFDW, ≈40% benthic community production. eaten mainly cod Gadus morhua . During 1970–1985, have depended on clam.