Abstract
A thorough understanding of host specificity is essential before pathogens can be used as biopesticides or self-sustaining biocontrol agents. In order to better define the host range of Solenopsis invicta virus 3 (SINV-3), we collected and exposed colonies of 2 native fire ants (Solenopsis aurea Wheeler, Solenopsis xyloni McCook) and 2 native thief ants (Solenopsis carolinensis Forel, Solenopsis molesta [Say]) (Hymenoptera: Formicidae) to the SINV-3 virus. Despite extreme exposure to the virus, active, replicating infections resulted only in colonies of the red imported fire ant (Solenopsis invicta Buren). These results, combined with a previous study of ants from 13 other genera, strongly support the proposition that the SINV-3 virus can be used safely as either a biopesticide or a self-sustaining biocontrol agent in parts of California, the Caribbean, and other regions of the world where this virus does yet not occur.
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