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Occurrence and distribution of entomopathogenic nematodes in Sri Lanka

Published online by Cambridge University Press:  05 June 2009

L.D. Amarasinghe
Affiliation:
Department of Biology, Imperial College of Science, Technology and Medicine, Silwood Park, Ascot, Berks SL5 7PY, UK
W.M. Hominick
Affiliation:
Department of Biology, Imperial College of Science, Technology and Medicine, Silwood Park, Ascot, Berks SL5 7PY, UK
B.R. Briscoe
Affiliation:
Department of Biology, Imperial College of Science, Technology and Medicine, Silwood Park, Ascot, Berks SL5 7PY, UK
A.P. Reid
Affiliation:
Department of Biology, Imperial College of Science, Technology and Medicine, Silwood Park, Ascot, Berks SL5 7PY, UK

Abstract

Entomopathogenic nematodes (Heterorhabditidae and Steinernematidae) were isolated from Sri Lankan soils using the Galleria baiting technique. Samples collected from different agro-ecological regions and different habitat types revealed that the presence of nematodes was restricted to sandy coastal soils. Two heterorhabditid and three steinernematid RFLP types were discovered within 5–100 m of the sea. Members of both families were equally prevalent. However, no parasitized insects were found although insect species were encountered which are potentially natural hosts. These nematodes were present at high temperatures (some above 30°C) and neither the monsoon rain nor the drought had any effect on their prevalence.

Type
Research Papers
Copyright
Copyright © Cambridge University Press 1994

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