FACTORS AFFECTING HATCHING OF THE SOIL NEMATODE DIPLOSCAPTER ORIENTALIS

Abstract

Hatching in Diploscapter orientalis was found to be affected by temperature, age of agar medium, tap and distilled water and two saline (NaCl) solutions. In fresh agar medium the rate of hatching varied from Io-15% at temperatures of 5-15 ºC and at 35 ºC while at a temperature range of 20-30 ºC it was 70-97%. In old agar medium the maximum hatch was 400/0 at 20-30 ºC. At a constant tempo of 30 ºC the tap water showed maximum percentage of eggs hatched compared to distilled water or saline (0.025% and 0.05% NaCl) solutions.