Abstract:
Investigations were commenced to study the potential use of the fungi, Beauveria
bassiana, Metarhizium anisopliae, and the attraction-aggregation-attachment pheromone
(AAAP) for the control of Ambloyomma variegatum as an environmentally friendly technology.
The objective of the study was to develop and test a device, which could be used for pheromone
and carbon dioxide delivery and infection of ticks with the fungi in an attempt to control
the tick populations in the vegetation. Using a pheromone-baited device treated with the fungi
mixture, 79% of the ticks released were attracted and exposed to the fungi and of these, 78%
died during incubation in the laboratory. In another set of experiments, of the released ticks
that were similarly exposed to fungi using the pheromone-baited device and left in the vegetation,
33.8% were recovered compared to recoveries of between 76 and 84% in the controls.
These results were significantly different at the 5% level, an indication that the pheromone/fungi
mixtures had significant effect in reducing the tick population in the field.
