›› 2013, Vol. 56 ›› Issue (2): 201-206.doi:

• SHORT COMMUNICATIONS • Previous Articles     Next Articles

Efficacy of nine isolates of Beauveria bassiana against adults of Tribolium castaneum (Coleoptera: Tenebrionidae) (In English

Hediyeh GOLSHAN1,*, Moosa SABER1, Farzad MAJIDI-SHILSAR2, Farrokh KARIMI3   

  1. (1. Department of Plant Protection, College of Agriculture, University of Maragheh, Maragheh, 55181-83111, Iran;
    2. Department of Plant Protection, Rice Research Institute, Rasht, 41635-1658, Iran;
    3. Department of Basic Sciences, University of Maragheh, Maragheh, 55181-83111, Iran)
  • Online:2013-02-20 Published:2013-02-20

Abstract:  Beauveria bassiana (Balsamo) Vuillemin is one of the most important entomopathogenic fungi and has been widely used for many insect pests all over the world. In this study, the pathogenicity of nine isolates of B. bassiana was evaluated against adults of Tribolium castaneum (Herbst). Fifteen adults of the pest were submerged into the four suspensions (1×106, 1×107, 1×108 and 1×109 conidia/mL) of different isolates of B. bassiana for 20 s, and the mortality was recorded daily for 14 d. Results showed that IRAN 440C and IRAN 187C isolates had the lowest (5.04×107 conidia/mL) and highest (5.05×108 conidia/mL) LC50, and DEBI 005 and DEBI 014 isolates had the shortest (2.88 d) and longest (4.96 d) LT50, respectively. According to the LC50 and LT50 values and the mortality, IRAN 440C is a perfect isolate for using in controlling the pest.

Key words: Beauveria bassiana; Tribolium castaneum, pathogenicity, median lethal concentration (LC50), median lethal time (LT50)