Effect of Low Temperature on the Activity of Entomopathogenic Nematodes

The present study was investigated the effect of low temperature on the activity of the entomopathogenic nematodes, Heterorhabditis indica and Steinernema glaseri. The effects of low temperature at 5⁰ to 25⁰C were tested under BOD conditions. The survival and infectivity of entomopathogenic nematodes in insect host were studied. Survival of H. indica was significantly greater at the lowest temperature of 10⁰C conversely survival of S. glaseri was significantly greater at a temperature of 5⁰ and 10⁰C. The infectivity of H. indica and S. glaseri was effective at temperature of 20⁰ and 25⁰ C (100 % and 100 %, respectively) for S. glaseri 10⁰, 15⁰ and 20⁰C (74.00%, 100 % and 100 %, respectively).