North Carolina 2-6-R Howard Marshall $18,380 



Oyster studies - This study has three-dimensional oyster culture experiments in five estuaries 

 along the coast of North Carolina. Shallottee River, Lockwoods Folly River, New River, Back 

 . Bay, and Deep Bay are the areas in which types of cultch materials and their time of placement 

 are studied in relation to the success of oyster spat. Data on spat abundance, water temper- 

 ature, salinity, and tidal cycle are also being collected. 



South Carolina 2-2-R Robert Lunz $17,800 



Charting of subtidal oyster beds and experimental transplanting of seed oysters thereto from 

 polluted seed oyster beds - The purpose of this project is to locate subtidal areas of the 

 State that are suitable for oyster growing. About 188 miles of waterways have been sur- 

 veyed. Oysters from the Wando and Santee Rivers that are subjected to several types of pollu- 

 tion have been moved to unpolluted areas for natural depuration. Samples are taken routinely 

 to study growth, condition, and survival. 



South Carolina 2-69-R G. Robert Lunz $13,400 



Investigation into the supplemental feeding of oysters - In an effort to open new areas of 

 increased productivity or new methods of cultivation, this study investigates the value of 

 supplementary feeding of oysters. Different food substances such as molasses, rice chaff, 

 and starches are used to discover a low-cost, readily available product that would produce 

 rapid weight increases and/or growth. This work is carried out in temperature controlled, 

 3,000 gallon capacity concrete tanks at Bears Bluff Laboratories on Wadmalaw Island. 



Virginia 3-6-R Jay Andrews $6^,000 



Production of disease resistant oysters - Efforts to breed oysters and speed development of 



popiilations resistant to MSX still offer the best hope of returning infested areas to useful 



production. This goal is being accomplished by testing stocks of oysters for 



disease resistance, breeding potentially disease-resistant oysters, determining disease 



agents, and continuing the selection and concentration of potentially disease-resistant stocks. 



The research is in waters adjacent to the Virginia Institute of Marine Science, Gloucester 



Point. 



Virginia 3-7-R William Hargis, Jr. Completed 1966 



Investigations of oyster larvae and spat and certain important environmental factors in an 

 horizontally stratified estuary - The movement and dispersion of oyster larvae and spat have 

 been examined in relation to physical factors such as salinity, density gradients, current 

 direction and velocity, light, temperature, and oxygen. A model of the James River system 

 was used to determine the rate of movement and dispersion. 



Virginia 3-62 -D Charles Bagnell $100,000 



Propagation of disease resistant oysters - The purpose of this project is to provide cultch 



on which spat can set in areas where MSX is known to be present. Work is carried out 



inn, the waters of the Piankatank and Rappahannock Rivers and Mobjack Bay. About 



l,0b2,71/^ bushels of cultch material were planted. Since the brood stock was not affected by 



the MSX disease, the researchers expect that the resultant larvae will also be disease resistant. 



Washington 1-24.-D Gedric Lindsay Completed 1967 



Inspection of oyster seed - new Asiatic sources - Because of the continuing decline of imports 

 of oyster seed from Japan on which the industry dependE j a trip was made to Korea and Taiwan to 

 investigate new sources of seed. Oysters were tested for predators and disease to guard 

 against infestation of Pacific oyster grounds. A new oyster seed source that was found in 

 Korea was acceptable luider the standards required by the State. The seed sources in Taiwan 

 were not acceptable. 



60 



