Blood viscosity and hematology of American bullfrogs ( Rana catesbeiana) at low temperature

Blood viscosity and hematology of American bullfrogs ( Rana catesbeiana) at low temperature

(1) The purpose of this study was to evaluate hematological properties and blood viscosity in bullfrogs ( Rana catesbeiana) submerged and exposed to prolonged low temperature. (2) Blood was collected from bullfrogs submerged in aerated water for 0, 20 or 50 days at 5°C, and those kept at 25°C. (3) N...

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Veröffentlicht in:Journal of thermal biology 2003-05, Vol.28 (4), p.271-277
Hauptverfasser: Palenske, Nicole M, Saunders, David K
Format: Artikel
Sprache:eng
Schlagworte:
Anura
Bullfrog
Freshwater
Hematology
Hemorheology
Hibernation
Optimal hematocrit
Rana catesbeiana
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Zusammenfassung:(1) The purpose of this study was to evaluate hematological properties and blood viscosity in bullfrogs ( Rana catesbeiana) submerged and exposed to prolonged low temperature. (2) Blood was collected from bullfrogs submerged in aerated water for 0, 20 or 50 days at 5°C, and those kept at 25°C. (3) No significant differences were found in hematocrit, hemoglobin, red blood cell count (RBCC), mean cell volume, apparent viscosity, plasma viscosity, or relative viscosity. (4) Plasma osmolality significantly decreased ( P
ISSN:0306-4565
1879-0992
DOI:10.1016/S0306-4565(03)00002-0