Oyster Spatfall in Virginia Waters. 1992 Annual Summary.

This report summarizes data collected during 1992 in the Virginia portion of the Chesapeake Bay. The annual report highlights oyster recruitment (shell string) in Virginia

Status of the Public Oyster Fishery of Virginia - Fall 1989

This report summarizes data collected during 1989 in the Virginia portion of the Chesapeake Bay. The report focuses on the fall oyster survey in Virginia

Public Oyster Shoal Survey - Spring 1989

This report summarizes data collected during 1989 in the Virginia portion of the Chesapeake Bay. The report focuses on the spring oyster survey in Virginia

Status of the Virginia Public Oyster Fishery - Spring 1991

This report summarizes data collected during 1991 in the Virginia portion of the Chesapeake Bay. The report focuses on the spring oyster survey in Virginia

Public Oyster Shoal Survey - Spring 1990

This report summarizes data collected during 1990 in the Virginia portion of the Chesapeake Bay. The report focuses on the spring public oyster shoal survey in Virginia

Status of the Virginia Public Oyster Fishery - Fall 1990

This report summarizes data collected during 1990 in the Virginia portion of the Chesapeake Bay. The report focuses on the fall oyster survey in Virginia

Oyster Spatfall in Virginia Waters: 1991 Annual Summary

The Virginia Institute of Marine Science (VIMS) conducts surveys of oyster spatfall (or setting ) in Virginia waters throughout the summer reproductive period. This survey provides an estimate of the potential of a particular area for receiving a strike or set of oysters on the bottom and helps define the timing of setting events. Information obtained from this effort is valuable to the Virginia Marine Resources Commission (VMRC) for its shell repletion program, and to private oyster growers, both of which are interested in maximizing the timing of shell planting. In addition, by maintaining a long-term data base, trends in spatfall throughout the lower Chesapeake Bay can be monitored. This in turn provides an index of the general health of the Bay. · Bi-weekly updates of spatfall data are provided to interested parties throughout the summer. This report summarizes data collected during the entire 1991 setting season

Oyster Spatfall in Virginia Rivers: 1989 Annual Summary

The Virginia Institute of Marine Science (VIMS) conducts surveys of oyster spatfall (or setting ) in Virginia waters throughout the summer reproductive period. This survey provides an estimate of the potential of a particular area for receiving a strike 11 or set of oysters on the bottom and helps define the timing of setting events. Information obtained by this effort is valuable to the Virginia Marine Resources Commission (VMRC) for its shell repletion program, and to private oyster growers, both of whom are interested in maximizing the timing of shell planting. To assist in that area, a biweekly report of spatfall data to date is provided to interested parties throughout the summer. This report is a summary of the entire 1989 setting season

Public Oyster Shoal Survey - Spring 1992

Oysters have been harvested from Virginia waters as long as humans have inhabited the area. Depletion of natural stocks in the late 1880\u27s led to the establishment of regulations by public fisheries agencies. A survey of bottom areas in which oysters grew naturally was completed in 1896 under the direction of Lt. Baylor, USN. These areas (over 243,000 acres) were set aside by legislative action for public use and have come to be known as the Baylor Survey Grounds or Public Oyster Grounds of Virginia, and are presently administered by VMRC, the Virginia Marine Resources Commission (Haven et al., 1978). Since 1960, oyster production from public shoals has declined dramatically, as shown in Figure 1. Two oyster pathogens, Perkinsus marinus (Dermo) and Haplosporidium nelsoni (MSX) have decimated stocks in the higher salinity regions (\u3e15ppt) of Chesapeake Bay and its tributaries (Hargis and Haven, 1988). Thus much of the public oyster ground is non-productive and the small portion that remains productive is being intensely harvested (Barber and Mann, 1990). Twice a year the Virginia Institute of Marine Science (VIMS) conducts a survey of selected public oyster bars (shoals) in Virginia waters for the purpose of assessing the status of the resource. Surveys conducted in the spring concentrate on grounds that are currently productive and provide information about overwinter mortality and relative fishing pressure from the current harvesting season1 • surveys conducted in the fall cover a larger area and provide information about spatfall or recruitment, summer (disease) mortality, and the status of each shoal as a source of seed or market oysters prior to the beginning of the harvesting season. This report summarizes the findings of the Spring 1992 Oyster Shoal Survey, conducted between 11 and 14 May, 1992

Status of the Public Oyster Resource of Virginia - Fall 1992

oysters have been harvested from Virginia waters as long as humans have i):\u27lhabited the area. Depletion of natural stocks in the late 1880\u27s led to the establishment of regulations by public fisheries agencies. A survey of bottom areas in which oysters grew naturally was completed in 1896 under the direction of Lt. Baylor, USN. These areas (over 243,000 acres) were set aside by legislative action for public use and have come to be known as the Baylor survey Grounds or Public oyster Grounds of Virginia, and are presently administered by the Virginia Marine Resources commission (VMRC). Twice a year the Virginia Institute of Marine Science (VIMS) conducts a survey of selected public oyster bars (shoals) in Virginia waters for the purpose of assessing the status of the resource. surveys conducted in the spring provide information about over-winter mortality and relative fishing pressure from the current harvesting season1 • Surveys conducted in the fall provide information about spatfall or recruitment, summer (disease) mortality, and the status of each shoal as a source of seed or market oysters prior to the beginning of the harvesting season. This report summarizes the findings of the Fall 1992 oyster Shoal Survey, conducted between 28 September and 10 October, 1992