Abstract
During the spring and summer months of 1995, 1996 and 1997, gillnet and longline surveys were conducted in conjunction with tag and recapture experiments to outline spatial and seasonal distribution of young sandbar sharks, Carcharhinus plumbeus, in Delaware Bay for essential fish habitat mapping, to assess abundance of young sandbar sharks, and to quantify growth during the summer nursery season. Sandbar sharks (n = 943) ranging from 40 to 120 cm fork length (48 to 130 cm total length) were captured; yearly totals were 199, 314 and 430 in 1995, 1996 and 1997, respectively. Individuals were captured between June and October in water temperatures ranging from 15.4° to 28.5°C and salinities ranging from 22.8 to 30.3 ppt. Presence of neonates and catch per unit effort data indicate that pupping begins in late June near the southwestern coast of the Bay. Juveniles were present from early June through September and their spatial distribution in the Bay appeared uniform. Of 782 sandbar sharks tagged and released during the three years, 50 were recaptured. Mean distance from tag to recapture location and mean days-at-liberty of sandbar sharks recaptured in Delaware Bay during the year of tagging were 10 km and 18 days, respectively. Some sharks were recaptured as far as 957 km from the release location. Length distributions show young-of-the-year sandbar sharks grow about 2–3 cm in length during the nursery season.
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References
Baranes, A. & J. Wendling. 1981. The early stages of development in Carcharhinus plumbeus. J. Fish Biol. 18: 159–175.
Branstetter, S. 1990. Early life-history implications of selected carcharhinoid and lamnoid sharks of the Northwest Atlantic. NOAA Tech. Rep. NMFS 90: 17–28.
Carlson, J.K. 1999. Occurrence of neonate and juvenile sandbar sharks, Carcharhinus plumbeus, from the northeastern Gulf of Mexico. U.S. Fish. Bull. 97: 387–391.
Casey, J.G. & L.J. Natanson. 1992. Revised estimates of age and growth of the sandbar shark (Carcharhinus plumbeus) from the western North Atlantic. Can. J. Fish. Aquat. Sci. 49: 1474–1477.
Casey, J.G. & H.L. Pratt, Jr. 1985. Distribution of the white shark, Carcharodon carcharias, in the western North Atlantic. Mem. South. Calif. Acad. Sci. 9: 2–14.
Casey, J.G., H.L. Pratt, Jr. & C.E. Stillwell. 1985. Age and growth of the sandbar shark (Carcharhinus plumbeus) from the western North Atlantic. Can. J. Fish. Aquat. Sci. 42: 963–975.
Castro, J.I. 1993. The shark nursery of Bulls Bay, South Carolina, with a review of the shark nurseries of the southeastern United States. Env. Biol. Fish. 38: 37–48.
Clarke, T.A. 1971. The ecology of the scalloped hammerhead shark, Sphyrna lewini, in Hawaii. Pac. Sci. 25: 133–144.
Compagno, L.J.V. 1984. FAO species catalogue, Vol. 4. Sharks of the world. Part 2-Carcharhiniformes. FAO Fish. Synop. 4: 250–655.
Ferreira, A.R. 1997. An assessment of fisheries impacting juvenile sandbar sharks (Carcharhinus plumbeus) in Delaware Bay: implications for managing shark nursery habitat. MS Thesis, University of Rhode Island, Kingston. 152 pp.
Gibson, R.N. 1994. Impact of habitat quality and quantity on the recruitment of juvenile flatfishes. Neth. J. Sea Res. 32: 191–206.
Heist, E.J., J.E. Graves & J.A. Musick. 1995. Population genetics of the sandbar shark (Carcharhinus plumbeus) in the Gulf of Mexico and mid-Atlantic bight. Copeia 1995: 555–562.
Hoese, H.D. 1962. Sharks and rays of Virgina's seaside bays. Chesapeake Sci. 3: 166–172.
Holland, K.N., B.M. Wetherbee, J.D. Peterson & C.G. Lowe. 1993. Movements and distribution of hammerhead shark pups on their natal grounds. Copeia 1993: 495–502.
Malloy, K.D., Y. Yamashita, H. Yamada & T.E. Targett. 1996. Spatial and temporal patterns of juvenile stone flounder Kareius bicoloratus growth rates during and after settlement. Mar. Ecol. Prog. Ser. 131: 49–59.
Medved, R.J. & J.A. Marshall. 1981. Feeding behavior and biology of young sandbar sharks, Carcharhinus plumbeus (Pisces, Carcharhinidae), in Chincoteague Bay, Virginia. U.S. Fish. Bull. 79: 441–447.
Medved, R.J. & J.A. Marshall. 1983. Short-term movements of young sandbar sharks, Carcharhinus plumbeus (Pisces, Carcharhinidae). Bull. Mar. Sci. 33: 87–93.
Medved, R.J., C.E. Stillwell & J.G. Casey. 1988. The rate of food consumption of young sandbar sharks (Carcharhinus plumbeus) in Chincoteague Bay, Virginia. Copeia 1988: 956–963.
Merson, R.R. 1998. Nursery grounds and maturation of the sandbar shark in the western North Atlantic. Ph.D. Dissertation, University of Rhode Island, Kingston. 150 pp.
Morrissey, J.F. & S.H. Gruber. 1993. Habitat selection by juvenile lemon sharks, Negaprion brevirostris. Env. Biol. Fish. 38: 311–319.
Musick, J.A., S. Branstetter & J.A. Colvocoresses. 1993. Trends in shark abundance from 1974 to 1991 for the Chesapeake Bight Region of the U.S. mid-Atlantic coast.NOAATech. Rep. NMFS 115: 1–18.
National Oceanic and Atmospheric Administration. 1985. National estuarine inventory, data atlas. Vol. I: Physical and Hydrologic Characteristics. Strategic Assessment Branch, Ocean Assessment Division, Rockville. 116 pp.
National Ocean Service. 1987. Nautical chart #12304, Delaware Bay, NJ and DE. U.S. Department of Commerce, National Oceanic and Atmospheric Administration, Washington, D.C.
Pratt, H.L., Jr. & T. Otake. 1990. Recommendations for work needed to increase our knowledge of reproduction relative to fishery management. NOAA Tech. Rep. NMFS 90: 509–510.
Price, K.S., Jr. 1977. Sharks, skates and rays of the Delaware Bay. Trans. Delaware Acad. Sci. 8: 219–231.
Rountree, R.A. & K.W. Able. 1996. Seasonal abundance, growth, and foraging habits of juvenile smooth dogfish, Mustelus canis, in a New Jersey estuary. U.S. Fish. Bull. 94: 522–534.
Schwartz, F.J. 1960. Measurements and the occurrence of young sandbar shark, Carcharhinus milberti, in Chesapeake Bay, Maryland. Chesapeake Sci. 1: 204–206.
Simpfendorfer, C.A. & N.E. Milward. 1993. Utilisation of a tropical bay as a nursery area by sharks of the families Carcharhinidae and Sphyrnidae. Env. Biol. Fish. 37: 337–345.
Sharp, J.H. 1998. Dynamics. pp. 43–53. In: T.L. Bryant & J.R. Pennock (ed.) The Delaware Estuary: Rediscovering a Forgotten Resource, University of Delaware Sea Grant College Program, Newark.
Sminkey, T.R. & J.A. Musick. 1995. Age and growth of the sandbar shark, Carcharhinus plumbeus, before and after population depletion. Copeia 1995: 871–883.
Springer, S. 1960. Natural history of the sandbar shark Eulamia milberti. U.S. Fish. Bull. 61: 1–38.
Springer, S. 1967. Social organization of shark populations. pp. 149–174. In: P.W. Gilbert, R.F. Mathewson & D.P. Rall (ed.) Sharks, Skates and Rays, John Hopkins Press, Baltimore.
Taniuchi, T. 1971. Reproduction of the sandbar shark, Carcharhinus milberti, in the east China Sea. Japan. J. Ichthyol. 18: 94–98.
Wass, R.C. 1973. Size, growth, and reproduction of the sandbar shark Carcharhinus milberti, in Hawaii. Pac. Sci. 27: 305–318.
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Merson, R.R., Pratt, H.L. Distribution, Movements and Growth of Young Sandbar Sharks, Carcharhinus Plumbeus, in the Nursery Grounds of Delaware Bay. Environmental Biology of Fishes 61, 13–24 (2001). https://doi.org/10.1023/A:1011017109776
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DOI: https://doi.org/10.1023/A:1011017109776