Roger L. Mann

Professor of Marine Science

Email: [[rmann]]
Phone: (804) 684-7108
Office: Watermen's Hall 249
Department: Fisheries Science

Education

• B.S., University of East Anglia
• Ph.D., University of Wales

Research Interests

Physiological ecology of marine molluscs. Larval dispersal and settlement processes in estuarine and shallow water systems. Fisheries and aquaculture of marine molluscs. Invasion biology and ballast water technologies.

Current Projects

• Population models of the Chesapeake oyster resources.
• Physiological and ecological studies of bivalve mollusc larvae in the field and laboratory.
• Dispersal processes in estuarine systems.
• Resource stock assessment by fishery dependent and fishery independent methods.
• Population assessment, life history and fishery management of offshore clam resources.
• Ecological restoration of oyster reef communities.
• Biology and ecology of veined rapa whelks in the Chesapeake Bay.
• Population demographics, growth rates, and age structure for Chesapeake hard clam resources.

Selected Publications

• Mann, R., M. Southworth, J.M. Harding, and J. Wesson. 2004. A comparison of dredge and patent tongs for estimation of oyster populations. Journal of Shellfish Research. 23(2): 387-390.
• Southworth, M. and R. Mann. 2004. Decadal scale changes in seasonal patterns of oyster recruitment in the Virginia sub estuaries of the Chesapeake Bay. Journal of Shellfish Research. 23(2): 391-402.
• Mann, R. and D. Evans. 2004. Site selection for oyster habitat rehabilitation in the Virginia portion of the Chesapeake Bay: A commentary. Journal of Shellfish Research. 23(1): 41-49.
• Harding, J. M. and R. Mann. 2003. Influence of habitat on diet and distribution of striped bass (Morone saxatilis) in a temperate estuary. Bulletin of Marine Science. 72(3): 841-851.
• Mann, R. and J. M. Harding. 2003. Salinity tolerance of larval Rapana venosa: Implications for dispersal and establishment of an invading predatory gastropod on the North American Atlantic coast. Biological Bulletin. 204: 96-103.
• Baker, P.K. and R. Mann. 2003. Late stage bivalve larvae in a well-mixed estuary are not inert particles. Estuaries. 26(4A): 837-845.
• Bartol, I.K., R. Mann, and M. Vecchione. 2001. Distribution of the euryhaline squid Lolliguncula brevis in the Chesapeake Bay: Effects of selected abiotic factors. Marine Ecology Progress Series. In press.
• Harding, J.M. and R. Mann. 2001. Oyster reefs as fish habitat: Opportunistic use of restored reefs by transient fishes. Journal of Shellfish Research. 20(3): 951-959.
• Bartol, I.K, R. Mann, and M.R. Patterson. 2001. Aerobic respiratory costs of swimming in the negatively buoyant brief squid Lolliguncula brevis. Journal of Experimental Biology. 204:3639-3653.
• Mann, R. 2000. Restoring the oyster reef communities in Chesapeake Bay: a commentary. Journal of Shellfish Res. 19(1): 335-339.
• Mann, R. and J. M. Harding. 2000. Invasion of the North American Atlantic coast by a large predatory Asian mollusc. Biological Invasions. 2:7-22.
• Harding, J.M. and R. Mann. 1999. Observations on the biology of the veined rapa whelk, Rapana venosa (Valenciennes, 1846) in the Chesapeake Bay. Journal of Shellfish Research. 18(1): 9-17.

Current Students

• Adrianna Picariello, M.S. - Physiological ecology of surf clams, Spissula solidissima

Past Students

• Patrick Baker, Ph.D. - Quantification of settlement and recruitment processes in bivalve mollusks.
• Shirley Baker, Ph.D. - Oyster (Crassostrea virginica) metamorphosis - Effects of low oxygen
• Ian Bartol, Ph.D. - Biomechanics of swimming in squid.
• Robert Blaylock, Ph.D. - Distribution, abundance and behavior of the Cownose Ray, Rhinoptera bonasus, in Lower Chesapeake Bay.
• Sandra Brooke, M.A. - A comparison of natural and laboratory diets for the culture of marine invertebrate larvae: American Oyster, Queen Conch, and Milk Conch
• Bernadita Campos, M.A. - Swimming response of larvae of three mactrid bivalves to different salinity gradients.
• Carolyn Cox, M.A. - Seasonal changes in the fecundity of oysters Crassostrea virginica (Gmelin)
• Rebecca Green, M.S. - Morphological variation of three populations of the veined rapa whelk.
• Arminda Gensler, M.S. (with John Graves) - Genetic investigations of interspecific and intraspecific relationships within the genus Rapana.
• Juliana Harding, Ph.D. - Ecological interactions between benthic oyster reef fishes and oysters.
• Kevin McCarthy, M.A. - The influence of swimming behavior of larval Crassostrea virginica (Gmelin).
• Curtis Roegner, M.A. - Recruitment and growth of juvenile Crassostrea virginica (Gmelin) in relation to tidal zonation
• Melissa Southworth, M.S. - Restoration of oyster populations and oyster reef ecology.
• Catherine Ware, M.S. - Spatial and temporal limits on breeding and reproductive biology of Chesapeake rapa whelks
• Erica Westcott, M.S. - Reproductive biology of the rapa whelk.

Courses Taught/Teaching

• Malacology, Larval Ecology, Biological Invasions