Osmoregulation of the Atlantic Stingray (Dasyatis sabina) from the Freshwater Lake Jesup of the St. Johns River, Florida

  title={Osmoregulation of the Atlantic Stingray (Dasyatis sabina) from the Freshwater Lake Jesup of the St. Johns River, Florida},
  author={Peter M. Piermarini and David H. Evans},
  journal={Physiological Zoology},
  pages={553 - 560}
The goals of this study were to (1) measure plasma osmolytes and rectal gland weights of a freshwater (FW) Atlantic stingray (Dasyatis sabina) population in the St. Johns River, Florida, and (2) determine how these parameters change after acclimation to seawater (SW). We hypothesized that the FW D. sabina may show physiological divergence from marine D. sabina, because the FW individuals reproduce and complete their life cycle in the St. Johns River. The FW D. sabina hyperregulate their plasma… 

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