Location: Imported Fire Ant and Household Insects
2013 Annual Report
It is hypothesized that IGR baits will be more effective against pest ants, like CCA, with large, interconnected colonies. Because IGRs do not affect adult worker ants, bait distribution among multiple colonies should be more efficient than with fast-acting baits. Commercial fire ant baits which contain insect growth regulating (IGR) active ingredients (pyriproxyfen or (S)-methoprene) were ineffective probably due to poor bait ingestion, however a laboratory bait was formulated with pyriproxyfen resulted in brood reductions of over 74% which was significantly greater than untreated colonies. In a field study, non-IGR liquid ant bait was distributed over 100 feet from bait station that contained large volume of bait. This demonstrated that access to palatable bait over extended time periods is crucial for bait distribution to extremely large populations of invasive ants. The gene survey of CCA for pathogens was completed and published.