670 
Fishery Bulletin 99(4) 
other large predators in Chesapeake Bay occasionally 
consume portunid crabs, cobia is the only large predator 
in Chesapeake Bay for which selective consumption of 
portunid crabs is documented. 
Acknowledgments 
Stomachs were collected in conjunction with a study on 
cobia reproduction in Chesapeake Bay. We thank Susan 
Crute, Jason Romine, and Holly Simpkins for technical 
assistance. Donnie Wallace and Harry Johnson Jr. pro- 
vided access to their facilities at Wallace’s Bait and Tackle, 
Fox Hill, VA. We thank the recreational and commercial 
fishermen who allowed their catches to be sampled. This 
project was supported by grants (RF96-8, RF97-9) from 
the Virginia Marine Resources Commission upon recom- 
mendation by the Recreational Fishing Advisory Board. 
Literature cited 
Darracott, A. 
1977. Availability, morphometries, feeding, and breeding 
activity of a multi-species, demersal fish stock of the west- 
ern Indian Ocean. J. Fish. Biol. 10( 1 ): 1—16. 
Franks, J. S., N. K. Garber, and J. R. Warren. 
1996. Stomach contents of juvenile cobia, Rachycentron 
canadum , from the northern Gulf of Mexico. Fish Bull. 
94(2):374-380. 
Hartman, K. J., and S. B. Brandt. 
1995a. Trophic resource partitioning, diets, and growth 
of sympatric estuarine predators. Trans. Am. Fish. Soc. 
124:520-537. 
1995b. Predatory demand and impact of striped bass, 
bluefish, and weakfish in the Chesapeake Bay: applica- 
tions of bioenergetics models. Can. J. Fish. Aquat. Sci. 
52:1667-1687. 
Joseph, E. B., J. J. Norcross, and W. H. Massmann. 
1964. Spawning of cobia, Rachycentron canadum , in the 
Chesapeake Bay area, with observations of juvenile speci- 
mens. Ches. Sci. 5:67-71. 
Meyer, G. H., and J. S. Franks. 
1996. Food of cobia, Rachycentron canadum , from the north- 
central Gulf of Mexico. Gulf Res. Rep. 9(3):161-167. 
Pinkas, L., M. S. Oliphant, and I. L. K. Iverson. 
1971. Food habits of albacore, bluefin tuna, and bonito in 
California waters. Calif. Dep. Fish Game Fish Bull. 152, 
105 p. 
Richards, C. E. 
1967. Age, growth, and fecundity of the cobia, Rachycentron 
canadum, from Chesapeake Bay and adjacent mid-Atlantic 
waters. Trans. Am. Fish. Soc. 96(3):343-350. 
Scharf, F. S„ and K. K. Schlicht. 
2000. Feeding habits of red drum ( Sciaenops ocellatus) in 
Galveston Bay, Texas: Seasonal diet variation and preda- 
tor-prey size relationships. Estuaries 23( 1):128-139. 
Shaffer, R. V., and E. L. Nakamura. 
1989. Synopsis of biological data on the cobia, Rachycentron 
canadum (Pisces: Rachycentridae). U.S. Dep. Commer., 
NOAA Tech Rep NMFS 82 [FAO Fisheries Synopsis 153], 
21 p. 
Smith, J. W. 
1995. Life history of cobia, Rachycentron canadum ( Osteich- 
thyes: Rachycentridae), in North Carolina waters. Brim- 
leyana 23:1-23. 
Walters, J. F., III. 
1999. Diet composition and feeding habits of large striped 
bass ( Morone saxatilis ) in Chesapeake Bay. M.S. thesis, 
School of Marine Science, College of William and Mary, 
Gloucester Point, VA, 124 p. 
