Resting spores of Entomophthora thaxteriana germinated after 5 years in cold storage; spores of E. virulenta and E. destruens germinated after 2 years. Spores resisted high temperatures (up to 100°C) for limited times and still retained viability. They remained viable after 18 months at –30°C.
Krejzová R. (1971): Resistance and germinability of resting spores of some species of the Entomophthora. – Česká Mykologie 25(4): 231–238.
