TY - JOUR T1 - Evaluation of oyster sampling efficiency of patent tongs and an oyster dredge A1 - Chai,Ai-Ling A1 - Homer,Mark A1 - Tsai,Chu-Fa A1 - Goulletquer,Philippe UR - https://archimer.ifremer.fr/doc/00000/3065/ KW - Chesapeke Bay KW - Sampling efficiencies KW - Crassostrea virgnica KW - Oysters N2 - Sampling efficiency of two oyster fishing gears, patent tongs and an oyster dredge, were compared in reference to diver-harvested quadrats in Chesapeake Bay, which supports important harvests of eastern oyster Crassosrrea virginica. Mean densities of spat (0$35 mm), small oysters (>35 mm to 75 mm), marketable oysters (>75 mm), and all oysters (three size-groups combined) estimated from patent tong samples were not significantly different from those derived from diver-harvested quadrat samples. In contrast, the densities estimated from dredge samples were low, only 2-32% of the diver estimates. Accordingly, patent tongs are recommended as the sampling gear for estimating eastern oyster stock abundance in the Maryland portion of Chesapeake Bay. Y1 - 1992 PB - American Fisheries Society JF - North American Journal of Fisheries Management VL - 12 SP - 825 EP - 832 ID - 3065 ER -