Nutritional asymmetries are related to division of labor in a queenless ant

Chris R. Smith, Andrew V. Suarez, Neil D. Tsutsui, Sarah E. Wittman, Benjamin Edmonds, Alex Freauff, Chadwick V. Tillberg

Research output: Contribution to journalArticle

Abstract

Eusocial species exhibit pronounced division of labor, most notably between reproductive and non-reproductive castes, but also within non-reproductive castes via morphological specialization and temporal polyethism. For species with distinct worker and queen castes, age-related differences in behavior among workers (e.g. within-nest tasks versus foraging) appear to result from physiological changes such as decreased lipid content. However, we know little about how labor is divided among individuals in species that lack a distinct queen caste. In this study, we investigated how fat storage varied among individuals in a species of ant (Dinoponera australis) that lacks a distinct queen caste and in which all individuals are morphologically similar and capable of reproduction (totipotent at birth). We distinguish between two hypotheses, 1) all individuals are physiologically similar, consistent with the possibility that any non-reproductive may eventually become reproductive, and 2) non-reproductive individuals vary in stored fat, similar to highly eusocial species, where depletion is associated with foraging and non-reproductives have lower lipid stores than reproducing individuals. Our data support the latter hypothesis. Location in the nest, the probability of foraging, and foraging effort, were all associated with decreased fat storage.

Original languageEnglish (US)
Article numbere24011
JournalPloS one
Volume6
Issue number8
DOIs
StatePublished - Aug 23 2011

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • General

Fingerprint Dive into the research topics of 'Nutritional asymmetries are related to division of labor in a queenless ant'. Together they form a unique fingerprint.

  • Cite this

    Smith, C. R., Suarez, A. V., Tsutsui, N. D., Wittman, S. E., Edmonds, B., Freauff, A., & Tillberg, C. V. (2011). Nutritional asymmetries are related to division of labor in a queenless ant. PloS one, 6(8), [e24011]. https://doi.org/10.1371/journal.pone.0024011