Journal
BIOCONTROL SCIENCE AND TECHNOLOGY
Volume 14, Issue 8, Pages 757-767Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/09583150410001720716
Keywords
biocontrol; entomopathogenic fungus; vector; disseminate; Lecanicillium longisporum; Lasius niger; Dysaphis plantaginea
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The potential for common black ant Lasius niger workers to vector conidia of the entomopathogenic fungus Lecanicillium longisporum to colonies of the rosy apple aphid Dysaphis plantaginea was assessed in laboratory and field experiments. Scanning electron microscope studies showed that L. niger workers which were artificially contaminated with L. longisporum conidia, carried conidia primarily on their tarsae but also on antennae and mandibles. Neither L. niger workers nor larvae were susceptible to infection with L. longisporum. Workers which were artificially contaminated with conidia of L. longisporum initiated infection in colonies of healthy D. plantaginea on apple. Mortality due to L. longisporum was recorded as 68.3, 30.8 and 3.7% of aphids under laboratory, semi-field and field conditions, respectively.
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