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1 January 2015 The Effects of Colony Structure and Resource Abundance on Food Dispersal in Tapinoma sessile (Hymenoptera: Formicidae)
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Abstract

The odorous house ant, Tapinoma sessile (Say) (Hymenoptera: Formicidae), exhibits a high degree of variation in colony spatial structure, which may have direct and indirect effects on foraging. Protein marking and mark-release-recapture techniques were utilized to examine the effect of colony spatial structure on food dispersal. Sucrose water spiked with rabbit IgG protein was presented to colonies with varying spatial configurations in laboratory and field experiments. In monodomous laboratory colonies, the rate and extent of food dispersal was rapid due to a decrease in foraging area. In polydomous colonies, food dispersal was slower because conspecifics were forced to forage and share food over longer distances. However, over time, food was present in all extremities of the colony. Experiments conducted in the field produced similar results, with nests in close proximity to food yielding higher percentages of workers scoring positive for the marker. However, the percentage of workers possessing the marker decreased over time. Results from this study provide experimental data on mechanisms of food dispersal in monodomous and polydomous colonies of ants and may be important for increasing the efficacy of management strategies against T. sessile and other pest ant species.

© The Author 2015. Published by Oxford University Press on behalf of the Entomological Society of America.
M. T. Van Weelden, G. Bennett, and G. Buczkowski "The Effects of Colony Structure and Resource Abundance on Food Dispersal in Tapinoma sessile (Hymenoptera: Formicidae)," Journal of Insect Science 15(1), 1-7, (1 January 2015). https://doi.org/10.1093/jisesa/iev011
Received: 17 June 2014; Accepted: 9 December 2014; Published: 1 January 2015
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