The efficacy entomopathogenic fungi from two common genera Beauveria and
Metarhizium against the larve of greater wax moth and of the mealworm was tested in
our research. We had isolates of fungal entomopathogens from different soil uses
(permanent crops, fields with crops, fields and gardens with vegetables, meadows and
forest) in Slovenia. In laboratory assay, we used 14 isolates of 4 species fungal
entomopathogens from genus Beauveria and Metarhizium from those, two isolates
Beauveria bassiana, one isolate Metarhizium guizhouense, five isolates Metarhizium
robertsii and six isolates Metarhizium anisopliae. In the assay, we infected larvae of
wax moth and mealworm. After inoculation assay lasted 16 days. We counted
mycosed larvae one, two, three, four, eight, nine, eleven and sixteen days after
inocualtion. Higher mortality was shown at more sensitive larvae of the greater wax
moth than at the larvae of mealworm in most isolates. The highest morality was shown
isolates T2 (100% at wax moth, day 8) and T7 (65% at mealworm, day 16) at fungus
M. robertsii, T33 (60% at mealworm, day 10) and T35 (100% at wax moth, day 8) at
fungus M. anisopliae and T5 (100% at wax moth, day 8) at fungus B. bassiana. Isolate
of fungal entomopathogen Metarhizium robertsii T2 has shown the best results for
both insect species (at wax moth 100% after eight days, at mealworm 65% after 10
days).
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