Oyster dredge

Reevaluation of eastern oyster dredge efficiency in survey mode: application in stock assessment.

Galtsoff (1950b) described the pearl oyster dredge as a light, cast iron frame with a scraping blade to which a net bag is attached.

Prior to deployment of the remote-set oysters and cultch, the selected area on the sea bottom was cleared of all biota using a commercial oyster dredge (1 m wide, 4 cm mesh, 4 cm teeth).

A comparison between a suction dredge and a traditional oyster dredge in the transplantation of oysters in Delaware Bay.

Some quahog diggers worked as crewmen on oyster dredge boats and as tongers during the oyster seasons.

Oyster harvest was completed between December 16, 2013, and January 9, 2014, using a 24-inch (60 cm) wide oyster dredge operated from a skiff.

Therefore, government intervention would be required to convert subtidal oyster dredge and tong fisheries into diver-harvesting operations for two reasons; the need for compensation of start-up costs and the need to overcome the tragedy of the commons.

After collecting reef-associated organisms, an oyster dredge (0.50 m wide, 5-cm mesh) was then towed at 2.5 m/sec for 60 sec, covering approximately 75 [m.sup.2] to sample the oyster reef.

The state-monitored oyster beds in the New Jersey portion of the Delaware Bay support a quota-based oyster dredge fishery that occurs between April and November.

Bagless dredging An activity that drags an oyster dredge with no (or an open) catch bag across a bar, stirring up oysters, shell, and sediment.

Most animals were collected with a Solent oyster dredge that is used by the local fishery; others were collected by divers.

However, comparison of the volatility of shell, relative to boxes or live oysters, by Powell & Klinck (2007) reveals that surficial shell content available to an oyster dredge will change slowly relative to the remaining bed constituents and likely not vary unidirectionally unless the input rate of boxes were to persistently increase or decrease over many years.