Pathogenicity, formulation and storage of insect pathogenic hyphomycetous fungi tested against Diabrotica speciosa |
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Authors: | VF Consolo GL Salerno CM Beron |
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Institution: | (1) Centro de Investigaciones Biológicas, FIBA, C. C. 1348, 7600 Mar del Plata, Argentina |
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Abstract: | Studies were conducted tosearch for fungal strains with potentialpathogenicity against Diabrotica speciosa(Germar) (Coleoptera: Chrysomelidae).Among sixteen fungal isolates screenedthe most virulent was a Beauveria bassiana(Balsamo) Vuillemin isolate (FHD13) thatcaused 70% mortality of D. speciosathird instar larvae. The LC50 value ofB. bassiana isolate FHD13 was3.48 × 1010 conidia/ml.Different temperatures (4, 17 and 26 °C)and vegetable oils (corn, sunflower and canola)used for storage did not significantly affectviability of conidia. A pathogenicity trialagainst D. speciosa larvae performed withthe corn oil formulation (1 × 108 conidia/mlof oil) caused 65% of mortality. |
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Keywords: | Beauveria bassiana conidia formulation Diabrotica speciosa Metarhizium anisopliae microbial control storage |
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