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Open AccessArticle

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

1
Department of Pharmacy, University of Patras, 26504 Patras, Greece
2
ELGO-Demeter, Plant Protection Division of Patras, 26442 Patras, Greece
3
Department of Chemistry, University of Ioannina, 45100 Ioannina, Greece
4
Department of Agriculture & Agrotechnology, University of Thessaly, 41110 Larissa, Greece
*
Author to whom correspondence should be addressed.
Agriculture 2019, 9(10), 222; https://doi.org/10.3390/agriculture9100222
Received: 4 September 2019 / Revised: 10 October 2019 / Accepted: 11 October 2019 / Published: 13 October 2019
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 (108 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. View Full-Text
Keywords: entomopathogenic fungi; virulence; Sitophilus granarius L.; Curculionidae; biological control; IPM entomopathogenic fungi; virulence; Sitophilus granarius L.; Curculionidae; biological control; IPM
MDPI and ACS Style

Mantzoukas, S.; Lagogiannis, I.; Mpekiri, M.; Pettas, I.; Eliopoulos, P.A. Insecticidal Action of Several Isolates of Entomopathogenic Fungi against The Granary Weevil Sitophilus granarius. Agriculture 2019, 9, 222.

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