Updated: May 12, 2023
Remote Setting is a method of producing seed that was developed in the Pacific Northwest. It relies on hatcheries to produce oyster seed up to the eyed pediveliger stage just prior to the time when the animals get ready to undergo metamorphosis, attach to a substrate and become spat.
Updated: December 1, 2022
Maryland Oyster Aquaculture Industry in 2020 at a Glance (EBR-62)
Overview of Maryland’s oyster aquaculture industry as of 2020, including context, cumulative harvest data, monthly harvest data, lease totals, and leased acreage, with historic data provided to indicate change over time. Authors: Shannon Hood, Jim LaChance, Cathy Liu, Fredrika Moser, Matthew Parker, and Donald Webster; Title: Maryland Aquaculture Industry in 2020 at a Glance (EBR-62).
Updated: August 10, 2022
Chesapeake Bay Blue Catfish: Invasive, but Delicious and Nutritious
Blue Catfish is an invasive fish species in the Chesapeake Bay. Increasing commercial harvest and consumption is one way to reduce their numbers in our Bay. This fact sheet aims to enhance public awareness on this invasive species as a new commercial fishery resource and support this newly developed seafood industry for rapid response to the COVID-19 pandemic.
Updated: June 24, 2022
Considerations for Shell Use in Oyster Rehabilitation Assessing the Effectiveness of Multiple Options (FS-1140)
There has been much concern regarding the precipitous decline in Mid-Atlantic oyster production, with various groups attempting to place blame and espouse causes. However, it is instructive to veer away from traditional arguments to compare oysters with traditional agricultural crops for a different view of the problem and a vision for potential solutions. Comparing the production of oysters with other crops allows us to examine how those have been managed over time to increase production. The United States today is considered a world leader in food production. Taking lessons from that development and applying them to oysters could help guide the restoration of the industry that once flourished. Authors: Donald Webster and Donald Meritt; Title: Considerations for Shell Use in Oyster Rehabilitation Assessing the Effectiveness of Multiple Options (FS-1140)
Updated: March 10, 2022
Predicting Oyster Production: A Comparison of Natural Recruitment and Aquaculture (EB-449)
The Chesapeake Bay oyster resource and fishery have shown wide temporal population fluctuations generating controversy regarding restoration methods. Disagreements stem from a lack of accurate and defensible data upon which to base decisions. Many commercial oyster harvesters favor dredging using metal scrapes towed by powered harvest vessels as a beneficial practice. Harvesters state that expanding this type of dredging throughout the Bay would lead to increased biomass and public harvest. Scientific and environmental communities dispute this claim, pointing to differences between bottom renovation and recruitment. This has created problems for managers who must consider multiple factors in regulating fisheries. To understand the effect of dredging on populations, we analyzed data from scientific studies to predict the likely outcome of these activities. This paper evaluates the cost-effectiveness and effects on production of restoration options. We compare power dredging and natural recruitment to rebuild biomass to contemporary aquaculture techniques. Authors: Donald Webster and Donald Meritt; Title: Predicting Oyster Production: A Comparison of Natural Recruitment and Aquaculture (EB-449)
Updated: March 7, 2022
University of Maryland Extension has conducted quality educational programs for aquaculture development for over four decades. These have included outreach training for the production of finfish, shellfish and aquatic plants. Our longest running programs have encouraged the production of oysters and clams, which are important resources for economic growth, employment and the environment.
Updated: February 2, 2022
Oyster hatcheries have gained a detailed understanding of the oyster life cycle and critical components. They can manipulate conditions during certain periods of the oyster life cycle to extend their spawning season well beyond a natural spawning season, and they can augment production by providing highly suitable food and other conditions to maximize efficiency and production.
Updated: February 2, 2022
The traditional method of oyster production is bottom culture using a Submerged Land Lease (SLL) granted by the State of Maryland. This creates a landlord/tenant relationship between the grower and the State, allowing the leaseholder to grow oysters using methods that mimic a natural oyster reef.