Screening of entomopathogenic fungi against the European spruce bark beetle, Dendroctonus micans (Coleoptera: Scolytidae)


Sevim A., DEMİR İ., Tanyeli E., DEMİRBAĞ Z.

BIOCONTROL SCIENCE AND TECHNOLOGY, cilt.20, ss.3-11, 2010 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 20 Konu: 1
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1080/09583150903305737
  • Dergi Adı: BIOCONTROL SCIENCE AND TECHNOLOGY
  • Sayfa Sayıları: ss.3-11

Özet

The European spruce bark beetle, Dendroctonus micans Kugelann (Coleoptera: Scolytidae), is one of the most serious destructive pests of oriental spruce (Picea orientalis L.). In order to find an effective biocontrol agent against this pest, we determined the effectiveness of entomopathogenic fungi against D. micans. Virulence of nine highly pathogenic strains including Beauveria bassiana (2), Beauveria cf. bassiana (2), Metarhizium anisopliae (2), Metarhizium sp. (1), Isaria fumosorosea (1) and Evlachovaea sp. (1) was evaluated on D. micans larvae and adults under laboratory conditions. Mortality values for both larvae and adults ranged from 83 to 100% and from 23 to 100%, respectively. Larvae were more susceptible to fungi than adults (P <0.05). Based on screening tests, B. cf. bassiana isolate KTU-53 was found the most effective isolate. LC(50) values were calculated as 1.77 x 10(4) and 2.65 x 10(4) conidia mL (-1) for isolate KTU-53 against larvae and adults, respectively. Consequently, B. cf. bassiana isolate KTU-53 appears to be the most promising microbial control agent for biocontrol of D. micans.