The role of ice nucleators in the frost tolerance of overwintering queens of the bald faced hornet

John G. Duman, Jean L. Patterson

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

1. 1. Overwintering queens of the bald faced hornet, Vespula maculata, are tolerant of ice formation in their body fluids down to temperatures of approximately - 14°C. 2. 2. Contributing to this frost tolerance is a high concentration of the cryoprotectant glycerol in the overwintering queens. An additional factor is the presence in the hemolymph of macromolecular ice nucleating agents which function to induce harmless extracellular ice formation at comparatively high temperatures (-4.6°C), and thereby prevent lethal intracellular ice formation. 3. 3. These ice nucleating agents have molecular weights greater than 3500 and are probably proteinaceous.

Original languageEnglish (US)
Pages (from-to)69-72
Number of pages4
JournalComparative Biochemistry and Physiology -- Part A: Physiology
Volume59
Issue number1
DOIs
StatePublished - 1978
Externally publishedYes

Fingerprint

Wasps
Ice
Temperature
Hemolymph
Body fluids
Body Fluids
Glycerol
Molecular Weight
Molecular weight

ASJC Scopus subject areas

  • Physiology
  • Molecular Biology
  • Biochemistry

Cite this

The role of ice nucleators in the frost tolerance of overwintering queens of the bald faced hornet. / Duman, John G.; Patterson, Jean L.

In: Comparative Biochemistry and Physiology -- Part A: Physiology, Vol. 59, No. 1, 1978, p. 69-72.

Research output: Contribution to journalArticle

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