Skidaway Institute of Oceanography

B.A. Chemistry, California State University at San Diego 1964
M.A. Chemistry, California State University at San Diego 1966
Ph.D. Marine Biology, Scripps Institution of Oceanography, University of California, San Diego 1970

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Research Interests and Projects

Current Projects:

DNA Damage and Embryo Developments in Grass Shrimp Exposed to Contaminants
We use a rapid and sensitive assay for DNA damage, the Comet assay, to assess the presence of genotoxic agents at several contaminated estuarine sites. The presence of these genotoxic agents, e.g., mercury, toxaphene, and chromium at these sites are linked to both DNA damage and embryo development effects. Laboratory studies, where suspect contaminants are added to food, water, or sediment, are used to verify field results. The presence of genotoxic agents in sediment are determined by adding female grass shrimp to contaminated sediments, allowing reproduction to occur, followed by DNA strand damage assays and embryo development bioassays of the embryos produced by the females.
Prevalence and Intensity of a Blue Crab Disease in Coastal Georgia
The blue crab, Callinectes sapidus , supports an important fishery along the Atlantic and Gulf coasts of the U.S. This fishery has suffered a significant decline in recent years with Georgia blue crab catches decreasing from 9.3 million pounds in 1995 to 1.8 million pounds in 2002. The cause of this sudden and dramatic crash is the subject of intense investigation. The decrease in crab population has been coincident with an increase in the prevalence and intensity of a disease in blue crabs caused by a parasitic infection of a dinoflagellate, Hematodinium sp. A focus of our work has been on development and use of molecular gene based diagnostic test for Hematodinium sp. that is very sensitive and can be used to detect Hematodinium sp. in the water as well as in crab hosts. A combination of field and laboratory studies are being used to study the transmission and life history of Hematodinium sp .
View a photomicrograph of muscle sections of a Hematodinium infected blue crab (photo taken by A. Walker at Mercer University Medical School)
Mariculture of Black Sea Bass for the Sushi Market
Our group has been developing a greenhouse based recirculating system to grow larval sea bass to 2 pound adults in one year. Instead of pellets, the black sea bass are fed live tilapia juveniles. Tilapia are reared in separate heated tanks with reproduction taking place every two weeks so there is a constant supply of tilapia fry and juveniles for the black sea bass. For further details, please see our mariculture webpage.

Courses

Coastal Oceanography - Skidaway Institute of Oceanography
Ecotoxicology - Georgia Southern University

Selected Publications


2008	Troedsson,C., R.F. Lee, V. Stokes, T.L. Walters, P. Simonelli and M.E. Frischer. Development of a denaturing high-performance liquid chromatography method for detection of protest parasites of metazoans. Appl. Environ. Microbiol. 74:4336-4345.
2006	Lee, R.F., W. Hagen. G. Kattner. Lipid storage in marine zooplankton. Mar. Ecol. Prog. Ser. 307: 273-306.
2006	Lee,R.F. and K.A. Maruya. Chemical contaminants entering estuaries in the South Atlantic Bight as a result of current and past land use. IN: Changing Land Use Patterns in the Coastal Zone (G.S. Keppel, M. R. DeVoe and M.V. Rawson, eds.), Springer, New York, pp 205-227.
2004	Lee, R.F. and M.E. Frischer. The decline of the blue crab. Amer. Scient. 92: 548-553.
2003	Lee, R.F. and S. Steinert. Use of the single cell gel electrophoresis/comet assay for detecting DNA damage in aquatic (marine and freshwater) animals. Mutation Res. 544: 43-64.
2002	Gruebl, T., M. R. Frischer, M. Sheppard, M. Neumann, A.N. Mauer and R. F. Lee. Development of an 18S rRNA gene-target PCR-based diagnostic for the blue crab parasite Hematodinium sp. Diseases of Aquat. Org. 49: 61-70.
2002	Lee, R.F. Bioavailability, biotransformation and fate of organic contaminants in estuarine animals. In: Coastal and Estuarine Risk Assessment (M.C. Newman, ed.), CRC/Lewis Press, Boca Raton, FL, pp. 97-126.
1995	Lee, R.F. and A. Walker. Lipovitellin and lipid droplet accumulation in oocytes during ovarian maturation in the blue crab, Callinectes sapidus. J. Exp. Zool. 272: 401-412.
1975	Benson, A.A. and R.F. Lee. The role of wax in oceanic food chains. Scientific American 232(3): 76-86.