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Table 1.

Summary of published accounts of plasma cryoprotectant concentration during freezing in adult gray treefrogs, Hyla versicolor and H. chrysoscelis

Population[Glucose] (mmol 1−1)[Glycerol] (mmol 1−1)Rearing/collection conditionsReference
Hyla versicolor     
Hancock Co., IL 20.1 67.1 Lab reared Layne, 1999  
Hancock Co., IL 21.8 112.5 Lab reared Layne and Jones, 2001  
Fayette Co., IN 22.7 <10 Lab reared Layne and Lee, 1989  
Hennepin Co., MN Nil ∼300 * Lab reared Schmid, 1982  
Ontario 6.8 423 Lab reared Storey and Storey, 1985  
Ontario 8.3 19.3 Spring collected Storey and Storey, 1987  
Hyla chrysoscelis     
Butler Co., OH 24.9 <0.1 Lab reared Costanzo et al., 1992  
Minnesota No mention Yes * Fall collected Schmid, 1986  
Population[Glucose] (mmol 1−1)[Glycerol] (mmol 1−1)Rearing/collection conditionsReference
Hyla versicolor     
Hancock Co., IL 20.1 67.1 Lab reared Layne, 1999  
Hancock Co., IL 21.8 112.5 Lab reared Layne and Jones, 2001  
Fayette Co., IN 22.7 <10 Lab reared Layne and Lee, 1989  
Hennepin Co., MN Nil ∼300 * Lab reared Schmid, 1982  
Ontario 6.8 423 Lab reared Storey and Storey, 1985  
Ontario 8.3 19.3 Spring collected Storey and Storey, 1987  
Hyla chrysoscelis     
Butler Co., OH 24.9 <0.1 Lab reared Costanzo et al., 1992  
Minnesota No mention Yes * Fall collected Schmid, 1986  
*

Measured in muscle extracts and bladder urine. Plasma concentration reported in all other cases.

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