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Insecticidal Action of Several Isolates of Entomopathogenic Fungi against The Granary Weevil Sitophilus granarius

Author

Listed:
  • Spiridon Mantzoukas

    (Department of Pharmacy, University of Patras, 26504 Patras, Greece
    ELGO-Demeter, Plant Protection Division of Patras, 26442 Patras, Greece)

  • Ioannis Lagogiannis

    (Department of Pharmacy, University of Patras, 26504 Patras, Greece
    ELGO-Demeter, Plant Protection Division of Patras, 26442 Patras, Greece)

  • Maria Mpekiri

    (ELGO-Demeter, Plant Protection Division of Patras, 26442 Patras, Greece)

  • Ioannis Pettas

    (Department of Chemistry, University of Ioannina, 45100 Ioannina, Greece)

  • Panagiotis A. Eliopoulos

    (Department of Agriculture & Agrotechnology, University of Thessaly, 41110 Larissa, Greece)

Abstract

The insecticidal virulence of various entomopathogenic fungal isolates retrieved from soil samples was tested on adults of the granary weevil Sitophilus granarius (L.) (Coleoptera: Curculionidae). Bioassays were carried out in the laboratory where experimental adults were sprayed with 1 mL of conidial suspension (10 8 conidia/mL) from each isolate. Mortality was recorded at 7, 14, and 21 days after exposure. Mean mortality, mean lethal time, survival, and hazard effect were estimated for each isolate. Two isolates of Beauveria bassiana (Balsamo) Vuillemin (Hypocreales: Cordycipitaceae), one isolate of Aspergillus insuetus (Bainier) Thom & Church (Eurotiales: Trichocomaceae) and Metarhizium anisopliae (Metschinkoff) Sorokin (Hypocreales: Clavicipitaceae) resulted in the highest mortality (97–100%). The isolates with both the highest hazard effect and the lowest survival rate were Aspergillus sp. and M. anisopliae . Our results indicate that entomopathogenic fungi have the potential to become a very useful tool in reducing chemical applications in storage facilities.

Suggested Citation

  • Spiridon Mantzoukas & Ioannis Lagogiannis & Maria Mpekiri & Ioannis Pettas & Panagiotis A. Eliopoulos, 2019. "Insecticidal Action of Several Isolates of Entomopathogenic Fungi against The Granary Weevil Sitophilus granarius," Agriculture, MDPI, vol. 9(10), pages 1-13, October.
    • Handle: RePEc:gam:jagris:v:9:y:2019:i:10:p:222-:d:275940
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