Partial migration of the nurse shark, Ginglymostoma cirratum (Bonnaterre), from the Dry Tortugas Islands

@article{Pratt2017PartialMO,
  title={Partial migration of the nurse shark, Ginglymostoma cirratum (Bonnaterre), from the Dry Tortugas Islands},
  author={Harold L. Pratt and Theo C. Pratt and Danielle Morley and Susan K. Lowerre‐Barbieri and Angela B. Collins and Jeffrey C. Carrier and Kristen M. Hart and Nicholas M. Whitney},
  journal={Environmental Biology of Fishes},
  year={2017},
  volume={101},
  pages={515-530}
}
Nurse sharks have not previously been known to migrate. Nurse sharks of the Dry Tortugas (DRTO) mating population have a highly predictable periodic residency cycle, returning to the Dry Tortugas Courtship and Mating Ground (DTCMG) annually (males) or bi- to triennially (females) during the June/July mating season. For 23 years we have followed the movements of 76 recaptured adults of a total of 115 tagged adults. Telemetry detections of 40 females tagged with acoustic transmitters show that… 
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