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One sandbar shark tagged by VIMS was recaptured 6 years later in the northern Gulf of Mexico; it was 2,800 km from its tagging location. Most sandbar sharks return to the area where they were born (nursery grounds) each summer for at least 2 years. They may return to adjacent coastal waters for up to 9 years. Juvenile sandbar sharks (ages 1-6) spend the winter off the coast of North Carolina within 20 km (approx. 12 mi) from shore. Older juveniles (ages 7-10) overwinter in waters as far as 60 km (approx. 37 mi) from shore. Grubbs et al. 2007, Grubbs and Musick 2007 |
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Sharks appear to move in the direction of the tidal current. Juvenile sandbar sharks move large distances in short periods of time, but they tend to stay within the study area during the summer and return to the area in subsequent summers. Shark locations are correlated with daylight; more sharks were detected by the array during the night and early dawn hours. Conrath 2005
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Conrath, C.L. 2005. Nursery delineation, movement patterns, and migration of the sandbar shark, Carcharhinus plumbeus, in the Eastern Shore of the Virginia coastal bays and lagoons. Ph.D. Dissertation. College of William and Mary, Williamsburg, Virginia. Goldman, K.J., S.D. Anderson, R.J. Latour, and J.A. Musick. 2004. Homeothermy in adult salmon sharks, Lamna ditropis. Environmental Biology of Fishes 71: 403-411. Grubbs, R.D., J.A. Musick, C.L. Conrath, and J.G. Romine. 2007. Long-term movements, migration, and temporal delineation of summer nurseries for juvenile sandbar sharks in the Chesapeake Bay region. In: C.T. McCandless, N.E. Kohler and H.L. Pratt, Jr. (eds). Shark nursery grounds of the Gulf of Mexico and the East Coast waters of the United States. ISBN: 1888569816. American Fisheries Society. Bethesda, MD. Grubbs, R.D. and J.A. Musick. 2007. Spatial delineation of summer nursery areas for juvenile sandbar sharks in Chesapeake Bay, Virginia. In: C.T. McCandless, N.E. Kohler and H.L. Pratt, Jr. (eds). Shark nursery grounds of the Gulf of Mexico and the East Coast waters of the United States. ISBN: 1888569816. American Fisheries Society. Bethesda, MD. |
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CSIRO
Australia Shark Tagging Research |
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