Division of temperature ranges divided by survival length and mortality of Citellophilus tesquorum sungaris

  Objective   To study the effects of temperature on the flea(Citellophilus tesquorum sungaris)under the condition free of host.

  Methods   Different survival length was observed when the fleas were in different temperature.TD₅₀ of the flea was tested, and different temperature range was divided based on the survival length and the mortality of the fleas.

  Results   The TD₅₀ for the female fleas was 40.81℃, and for the male fleas was 41.03℃; lethal high temper ature was above 42℃; sublethal high temperature rnage was between 37.5℃ and 42℃; the suitable temperature range was between 2℃ and 35℃, w hile 15℃ to 27.5℃ was the optimum temperature range; sublethal low temperature range was between-2℃ and 10℃; lethal low temperature range was below -10℃.

  Conclusion   Temperature is the biggest climate factor for the effect on the citellophilus tesquorum sungaris, its temperature range of survival has no obviously differences with other insects under the condition free of host.