In the present study, the reproduction potential and survival capability of the soil nematode Pristionchus maupasi
was followed in 10 cm2 Petri dishes at different constant temperatures: 5, 10, 15, 20, 25 and 30 °C. The experiment started by
placing nematode eggs on each dish. The minimum number of days from eggs, at start, to adult egg producing nematodes, decreased
from 7 days at 10°C to 3 days at 25°C. At 5°C no eggs hatched, and at 30°C the released larvae did not develop into
egg producing adults. After 7 days all eggs had hatched in the interval between 15 and 30 °C and 87 % at 10 °C. From hatched
eggs the 1st generation nematodes evolved.
At day 4, the number of 1st generation nematodes was almost similar at temperatures ranging from 10 to 25 °C, while the number
at 30 °C was significantly lower. The 1st generation adult nematodes gave rise to a 2nd generation, which did not develop to
fertility, but became arrested 3rd stage “dauerlarvae”, maybe due to reduced food supplies and increased concentration of
wastes. From 100 ‘eggs at start’, 10000 to 14000 2nd generations “dauerlarvae” developed at temperatures between 10 and
20°C. In the interval from 10 to 25 °C, a substantial number of these survived more than 2 months.