Occurrence of entomopathogenic nematodes in Thailand
1998
Nuchanart Tangchitsomkid | Suebsak Sontirat (Department of Agriculture, Bangkok (Thailand). Plant Pathology and Microbiology Div. Nematology Section)
Soil survey of indigenous strains of entomopathogenic nematode was conducted in 42 provinces of Thailand between June 1996 to March 1998. A total of 306 soil samples were extracted using Galleria baiting technique. The nematodes were recovered from 9 out of 42 locations (21.4 percent). The identification using morphological characteristics of infective-stage juveniles and adults revealed 8 isolates of Steinernematidae : Steinernema sp. and 1 isolate of Heterorhabditidae : Heterorhabditis sp. The nematodes were collected from central plains at the temperature range of 24-27 deg C (10-15 cm deep from soil surface) and 29-37 deg C (at soil surface) and they were heat-tolerant isolates from Thailand.
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