The Mortality Rate of the Potato Leafhopper and Some Related Species when Subjected to Prolonged Exposure at Various Temperatures1

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Abstract
To determine their ability to survive temperatures that might be encountered in a long-distance spring dispersal night and in any attempt to survive the rigors of winter in Illinois, adults of the potato leafhopper, Empoasca fabae (Harris), Were exposed to a number of constant temperatures, and survival rates were determined. Survival time was longest at about 38-40. Adult females without a source of water to imbibe (as if air-borne) survived up to 40 hours in a dry atmosphere and up to 80 hours in a moist atmosphere. When given a source of free moisture to imbibe (as in a hibernation status) at 38 the last female died on the 68th day, indicating winter survival in Illinois is improbable.

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