Cold tolerance of steinernematid and heterorhabditid nematodes

I. M. Brown, R. Gaugler

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

1. Nematodes survive subzero temperatures using either a freeze-avoiding or freezing-tolerant strategy. Steinernema anomali, S. feltiae, and Heterorhabditis bacteriophora were all found to be freezing tolerant. 2. The lower lethal temperatures were -22, -19 and -14°C for S. feltiae, H. bacteriophora and S. anomali, respectively. 3. Survival after prolonged freezing at -4°C was 6, 5 and 3 days for S. feltiae, H. bacteriophora and S. anomali, respectively. 4. Acclimation to lower temperatures increased freezing tolerance. The freezing tolerance of Heterorhabditis bacteriophora increased under a stepwise acclimation regime; S. feltiae acclimated better under a direct acclimation regime.

Original languageEnglish (US)
Pages (from-to)115-121
Number of pages7
JournalJournal of Thermal Biology
Volume21
Issue number2
DOIs
StatePublished - 1996

ASJC Scopus subject areas

  • Biochemistry
  • Physiology
  • Agricultural and Biological Sciences(all)
  • Developmental Biology

Keywords

  • Cold hardiness
  • Cold tolerance
  • Entomopathogenic
  • Freezing
  • Heterorhabditis
  • Nematode
  • Steinernema

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