Effects of Temperature, Humidity and Conidial Density on Infection by Beauveria bassiana of Adult Sweet Potato Weevil, Cylas formicarius (FABRICIUS) (Coleoptera: Curculionidae)

<Author> Keiji YASUDA ; Kazuko TAKAYESU ; Katsue UEHARA
<Year> 1997
<Journal> Jpn. J. Appl. Entomol. Zool.
<Volume> 41
<Issue> 1
<Pages> 55-58
<Notes> Japanese

Beauveria bassiana infected Cylas formicarius irrespective of temperature between 15 and 31 deg C. No infection was observed at relative humidities of less than 43%. The median tolerance limit for conidia density per cm^2 was 2.2*10^9 (male) and 3.7*10^9 (female).