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Desiccation survival of populations of the entomopathogenic nematodes Steinernema feltiae and Heterorhabditis megidis from Greece and the UK

Published online by Cambridge University Press:  05 June 2009

H. Menti
Affiliation:
Entomology and Nematology Department, IACR–Rothamsted, Harpenden, Herts, AL5 2JQ, UK Department of Biology, Imperial College of Science, Technology and Medicine, Silwood Park, Ascot, Berks, SL5 7PY, UK
D.J. Wright
Affiliation:
Department of Biology, Imperial College of Science, Technology and Medicine, Silwood Park, Ascot, Berks, SL5 7PY, UK
R.N. Perry*
Affiliation:
Entomology and Nematology Department, IACR–Rothamsted, Harpenden, Herts, AL5 2JQ, UK
*
*Author for correspondence.

Abstract

The desiccation survival and ability to control water loss during drying of individual infective juveniles (IJs) of populations of Steinernema feltiae and Heterorhabditis megidis from Greece and the UK were examined at different relative humidities. Survival at all relative humidities was for minutes only and there was no evidence of enhanced survival of the populations of either species from Greece compared with those from the UK. The survival of individuals of both populations of H. megidis was superior to that of S. feltiae and the rate of drying of H. megidis was significantly slower. The sheath surrounding the IJs of H. megidis appears to be involved in slowing the rate of water loss of the enclosed nematodes.

Type
Research Papers
Copyright
Copyright © Cambridge University Press 1997

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