Emergence of increased division of labor as a function of group size

Raphaël Jeanson, Jennifer Fewell, Root Gorelick, Susan M. Bertram

Research output: Contribution to journalArticle

91 Citations (Scopus)

Abstract

Empirical evidence suggests that division of labor in insect societies is positively related to group size both within and across taxa. Response threshold models (RTM) have been commonly used to analyze patterns of division of labor. However, these models have been explored empirically and theoretically for only a limited number of tasks, and few studies have examined predictions of the model as colony size and work availability change. We theoretically examine how group size influences division of labor using a fixed response-threshold model. We simultaneously explore how expected by-products of increased colony size, including demand (total work need relative to total work force available) and task number, affect this relationship. Our results indicate that both low demand and high task number positively influence division of labor. We suggest that these changes parallel what is observed within social groups as their size increases, and that, in part, the commonly observed increased division of labor with increasing group size is emergent.

Original languageEnglish (US)
Pages (from-to)289-298
Number of pages10
JournalBehavioral Ecology and Sociobiology
Volume62
Issue number2
DOIs
StatePublished - Dec 2007

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polyethism
labor division
group size
eclosion
Advisory Committees
Insects
insect colonies
labor force
byproducts
insect
prediction

Keywords

  • Colony size
  • Division of labor
  • Tasks number
  • Threshold model

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Ecology
  • Behavioral Neuroscience

Cite this

Emergence of increased division of labor as a function of group size. / Jeanson, Raphaël; Fewell, Jennifer; Gorelick, Root; Bertram, Susan M.

In: Behavioral Ecology and Sociobiology, Vol. 62, No. 2, 12.2007, p. 289-298.

Research output: Contribution to journalArticle

Jeanson, Raphaël ; Fewell, Jennifer ; Gorelick, Root ; Bertram, Susan M. / Emergence of increased division of labor as a function of group size. In: Behavioral Ecology and Sociobiology. 2007 ; Vol. 62, No. 2. pp. 289-298.
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