Journal of Applied Entomology - Zeitschrift für angewandte Entomologie (2002) 126, 231-237

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I. Klingen, R. Meadow and T. Aandal (2002)
Mortality of Delia floralis, Galleria mellonella and Mamestra brassicae treated with insect pathogenic hyphomycetous fungi
Journal of Applied Entomology - Zeitschrift für angewandte Entomologie 126 (5), 231-237
Abstract: The susceptibility of Delia floralis eggs, neonates and larvae and the susceptibility of Galleria mellonella and Mamestra brassicae larvae to seven different Norwegian isolates of the insect pathogenic, hyphomycetous fungi Tolypocladium cylindrosporum, Metarhizium anisopliae and Beauveria bassiana, were investigated. Metarhizium anisopliae isolate ARSEF 5520 was highly virulent to G. mellonella larvae and caused 100% mortality when tested at a concentration of 3.6 x 106 conidia/ml. The same M. anisopliae isolate was not virulent to D. floralis larvae. Isolates of T.cylindrosporum, were equally virulent to G. mellonella and D. floralis causing up to 36.0% mortality of larvae. It is suspected, however, that the use of grated rutabaga as a food source in the D. floralis bioassay reduced the fungal virulence of both M. anisopliae and T. cylindrosporum to D. floralis. Among three T. cylindrosporum isolates tested at a concentration of 1.0 x 107 conidia/ml against eggs of D. floralis none of them reduced the hatching percentage. One isolate, ARSEF 5525 did, however, significantly reduce the longevity of neonates. Beauveria bassiana isolates ARSEF 5510 and ARSEF 5370 tested at a concentration of 1.0 x 107 conidia/ml resulted in M. brassicae mortality levels of 70.0 and 55.0%, respectively. The B. bassiana isolate ARSEF 5557, however, was not virulent to M. brassicae. Among the three isolates tested against M. brassicae the two virulent isolates produced a red pigment, probably oosporein, when cultured in Sabouraud dextrose agar.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Ingeborg Klingen, Richard Meadow

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
evaluation - screening - selection

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Mamestra brassicae Norway
Galleria mellonella Norway
Delia floralis Norway
Beauveria bassiana (entomopathogen) Mamestra brassicae Norway
Metarhizium anisopliae (entomopathogen) Galleria mellonella Norway
Tolypocladium cylindrosporum (entomopathogen) Delia floralis Norway