Hematocrit and plasma osmolality values of young-of-year shortnose sturgeon following acute exposures to combinations of salinity and temperature
- 182 Downloads
Little is known about the physiological capabilities of young-of-year (YOY) shortnose sturgeon. In this study, plasma osmolality and hematocrit values were measured for YOY shortnose sturgeon following 48-h exposures to 12 different combinations of salinity and temperature. Hematocrit levels varied significantly with temperature and age, and plasma osmolalities varied significantly with salinity and age. Plasma osmolality and hematocrit values were similar to previously published values for other sturgeons of similar age and size in similar treatment conditions.
KeywordsAcclimation Development Blood Physiology Acipenser brevirostrum
We thank Kent Ware of the Bears Bluff National Fish Hatchery (USFWS) for supplying the shortnose sturgeon for these experiments. We also thank Vincent Mudrak, Carlos Echevarria, Bill Wayman, and Brian Hickson of the Warm Springs Regional Fisheries Center (USFWS) for providing the facilities and technical support for the research. Dustin Haskins, Megan Hill, and J. Tavis Mclean assisted in culturing fish and conducting the experiments. This research was authorized under Endangered Species Permit 1261 that was issued by the National Marine Fisheries Service. Research was also authorized by the University of Georgia Institutional Animal Care and Use Committee, number A2006-10039-0. Drs. Cecil Jennings and Douglas Peterson provided funding and reviewed the manuscript. Additional funding was provided by the Georgia Department of Natural Resources.
- Collins MR, Rogers SG, Smith TIJ, Moser ML (2000) Primary factors affecting sturgeon populations in the southeastern United States: fishing mortality and degradation of essential habitats. Bull Mar Sci 66(3):917–928Google Scholar
- Dadswell MJ, Taubert BD, Squiers TS, Marchette D, Buckley J (1984) Synopsis of biological data on shortnose sturgeon, Acipenser brevirostrum LeSueur 1918. FAO Fisheries Synopsis No. 40Google Scholar
- Hickson B, Ware K, Mohead M (2001) Feeding trial to determine the maintenance diet requirement, optimal feeding rate, and maximum feeding rate for juvenile shortnose sturgeon (Acipenser brevirostrum) at 17 and 20°C. Final Report. Florida Marine Research Institute, Florida Fish and Wildlife CommissionGoogle Scholar
- Moyle PB, Cech JJ Jr (1988) Fishes: an introduction to ichthyology, 2nd edn. Prentice Hall Inc, Englewood CliffsGoogle Scholar
- Muir BS (1969) Gill dimension as a function of fish size. J Fish Res Board Canada 26:165–170Google Scholar
- Riggs A (1970) Properties of fish hemoglobins. In: Hoar WS, Randall DJ (eds) Fish physiology, vol 4. Academic Press, New York, pp 209–252Google Scholar
- Smith TIJ, Collins MR (1996) Shortnose sturgeon stocking success in the Savannah River. Proc Ann Conf SEAFWA 50:112–121Google Scholar
- Vladykov VD, Greeley JR (1963) Order Acipenseroidei. In: Olsen VH (ed) Fishes of the western North Atlantic, Part 3. Memoirs of the sears foundation of marine research. Yale University, New Haven, pp 24–60Google Scholar