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Blood chemistry and ice nucleating activity in hatching painted turtles.

Author(s) : STOREY K. B., MCDONALD D. G., DUMAN J. G., et al.

Type of article: Article

Summary

Serum of autumn-collected hatchling Midland painted turtles showed a mean supercooling point of -8.0 more or less O.7 deg C. This was retained with serum dilutions up to 1/500, indicating the presence of ice nucleating agents, but treatments with heat, HCl or periodate reduced nucleating ability. Sera from 21 other vertebrate species, including the box turtle Terrapene carolina and the garter snake Thamnophis sirtalis, lacked nucleating activity. Exposure of turtles to 12 h freezing at -2.5 deg C led to a small increase in plasma but did not alter blood pH, acid-base balance, osmolarity, or other plasma ions.

Details

  • Original title: Blood chemistry and ice nucleating activity in hatching painted turtles.
  • Record ID : 1993-0508
  • Languages: English
  • Source: Cryo-Letters - vol. 12 - n. 6
  • Publication date: 1991/11
  • Document available for consultation in the library of the IIR headquarters only.

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