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The effect of the entomopathogenic fungus Verticillium lecanii Viegas on mature larvae of Chrysoperla carnea stephens in the laboratory



The effect of the entomopathogenic fungus Verticillium lecanii Viegas on mature larvae of Chrysoperla carnea stephens in the laboratory



Acta Zoologica Fennica 0(209): 233-237, May 6



The effect of infection of Chrysoperla carnea larvae with the fungus Verticillium lecanii (Zimm.) Viegas was investigated in the laboratory with two fungal isolates under relative humidities of 65 and 95%. One isolate was highly pathogenic to third instar larvae, impaired their feeding and searching capacity, and decreased emergence of adults. Feeding of the larvae with infected aphids had similar effects, and also decreased fecundity. The other isolate had a weaker influence. Higher humidity increased effects. These results show the necessity to determine the timing of field releases of both entomopathogenic fungi and entomophagous predators and the need of host selective isolates of V. lecanii.

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