Energy Investment in Gynes of the Argentine AntIridomyrmex humilis(Mayr) in Relation to the Mode of Colony Founding in Ants (Hymenoptera:Formicidae)

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Abstract
The increase in weight, fat and energy content of queens was studied in Iridomyrmex humilis (Mayr) in relation to the mode of colony founding in ants. The increase in energy content of gynes during the time between emergence and mating reaches only 80% in this species in which queens found colonies with the help of workers (dependent mode), whereas it can reach 470% in species in which queens found colonies without the help of workers (independent mode). These results are discussed with regard to the investment in energy required by each mode of colony founding.