The Population Biology of the Antarctic Scallop, Adamussium colbecki (Smith 1902) at New Harbor, Ross Sea

摘要: The unexploited Antarctic scallop, Adamussium colbecki, has a circumpolar distribution across the continental shelf from 0 to nearly 1 500 m. During 1986 austral summer A. colbecki was sampled with SCUBA depth of 30 m at New Harbor, in southwestern Ross Sea. Quadrat collections revealed nearshore scallop densities up 65 m−2 biomasses approaching 2 kg m−2. Mark and recapture experiments showed that grew an order magnitude more slowly than temperate species analyses shell growth bands indicated it may live 20 years. Size frequency comparisons earlier studies same area suggested this population intermittent recruitment is quite stable. Estimates yield per recruit indicate relatively low levels fishing pressure could cause Harbor collapse.