Abstract
The effects of temperature and humidity on physogastric development and reproduction of the mushroom mite Dolichocybe perniciosa (Acari: Dolichocybidae) were observed at five temperatures (8, 13, 18, 25 and 28°C), five relative humidities (22, 55, 65, 81 and 92% RH) and dark condition. Temperatures significantly affected the settling time, pre-physogastry time, physogastry rate, generation time and the number of progenies in physogastry, while humidity had little effect on these factors. Settling rate of wondering adult females increased and pre-physogastry time shortened with the increase of temperature. In the range of 13°C to 28°C more than two thirds of wondering females settled within 72 hours which was significantly higher than that at 8°C. About 60 to 64 progenies were produced when temperature was above 18°C. Dolichocybe perniciosa had the ability to survive at temperatures as high as 38°C and as low as 0°C after 24 hours but failed to settle and feed at –20°C or 42°C. It was capable to recover after being treated at 0°C for 72 hours.
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