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Temperature regulation of supercooling and gut nucleation in relation to diapause of Pyrrhocoris apterus (L.) (Heteroptera).

Author(s) : HODKOVA M., HODEK I.

Type of article: Article

Summary

The decrease of the supercooling point and thus the increase in cold hardiness is regulated by photoperiod and temperature. The relative importance of these factors depends on the physiological state of the insect. The supercooling point is about -7 deg C at the onset of prediapause and a decrease of about 4-5 deg C is associated with the development of the diapause syndrome in adults. The gut was identified as the primary site of ice nucleation because its supercooling point value was very similar to the value for the whole body in both short-day and long-day insects.

Details

  • Original title: Temperature regulation of supercooling and gut nucleation in relation to diapause of Pyrrhocoris apterus (L.) (Heteroptera).
  • Record ID : 1998-1304
  • Languages: English
  • Source: Cryobiology - vol. 34 - n. 1
  • Publication date: 1997/02

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