关键词: 腐食酪螨, 饲料, 发育历期, 发育起点温度, 有效积温

Abstract: The development and growth of every stage of Tyrophagus putrescentiae (Schrank) bred with two different food (corn and yeast) under constant temperatures 12.5℃, 15℃, 20℃, 25℃ and 30℃, respectively, were studied. The developmental threshold temperature (DTT) and effective accumulated temperature (EAT) of different stage of T. putrescentiae were calculated. The results showed that the developmental period and the temperature were in negative correlation within the temperature range tested, i.e., with the increase of temperature the time needed for development was shortened. The developmental threshold temperature and effective accumulated temperature were different for the mites bred at the same constant temperature but with different food. For the mites bred with yeast, the whole generation took 48.04 d and 8.41d under 12.5℃ and 30℃, respectively; DTT was 10.18℃ and EAT 155.44 d·℃. While for the mites bred with corn, the whole generation lasted 78.79 d and 10.77 d under 12.5℃ and 30℃; DTT was 10.52℃ and EAT was 208.33 d·℃. The body length and width of the adult mites were used to compare influence of food and temperature on the mite development. The results showed that food ingredient played important role, while temperature had almost no effect on body size of the mite. 

Key words: Tyrophagus putrescentiae, food, developmental duration, developmental threshold temperature, effective accumulated temperature