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Insectes Sociaux

, Volume 59, Issue 3, pp 307–311 | Cite as

Development rate and brood production in haplo- and pleometrotic colonies of Oecophylla smaragdina

  • J. Offenberg
  • R. Peng
  • M. G. Nielsen
Research Article

Abstract

Pleometrosis (colony founding by multiple queens) may improve life history characteristics that are important for early colony survival. When queens unite their initial brood, the number of workers present when incipient colonies open may be higher than for single queen colonies. Further, the time until the first worker emerges may shorten. For territorial species and species that rob brood from neighbouring colonies, a faster production of more workers may improve the chance of surviving intraspecific competition. In this study, the time from the nuptial flight to the emergence of the first worker in incipient Oecophylla smaragdina Fabr. colonies founded by 1–5 queens was compared and the production of brood during the first 68 days after the nuptial flight was assessed. Compared to haplometrotic colonies, pleometrotic colonies produced 3.2 times more workers, their first worker emerged on average 4.3 days (8%) earlier and the queen’s per capita egg production almost doubled. Further, colony production was positively, correlated with the number of founding queens and time to worker emergence was negatively correlated. These results indicate that pleometrotic O. smaragdina colo-nies are competitively superior to haplometrotic colonies as they produce more workers faster and shorten the claustral phase, leading to increased queen fecundity.

Keywords

Colony founding Pleometrosis Haplometrosis Worker emergence Incipient colony eclosion Weaver ants 

Notes

Acknowledgments

The collection of weaver ant queens for this study was supported by a grant from the Carlsberg Foundation (2009-01-0406) and by Professor Keith Christian. Thanks to Charles Darwin University for providing necessary facilities. The comments from two anonymous reviewers improved this paper.

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Copyright information

© International Union for the Study of Social Insects (IUSSI) 2012

Authors and Affiliations

  1. 1.Department of BioscienceAarhus UniversitySilkeborgDenmark
  2. 2.Research Institute for the Environment and LivelihoodsCharles Darwin UniversityDarwinAustralia
  3. 3.Department of BioscienceAarhus UniversityAarhus CDenmark

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