Body Size Differences between Foraging and Intranidal Workers of the Monomorphic Ant <i>Lasius niger</i>

The association between the division of labour and worker body size of ants is typical for species that maintain physical castes. Some studies showed that this phenomenon can be also observed in the absence of distinct morphological subcastes among workers. However, the general and consistent patter...

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Main Authors: Mateusz Okrutniak, Bartosz Rom, Filip Turza, Irena M. Grześ
Format: Article
Language:English
Published: MDPI AG 2020-07-01
Series:Insects
Subjects:
Online Access:https://www.mdpi.com/2075-4450/11/7/433
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author Mateusz Okrutniak
Bartosz Rom
Filip Turza
Irena M. Grześ
author_facet Mateusz Okrutniak
Bartosz Rom
Filip Turza
Irena M. Grześ
author_sort Mateusz Okrutniak
collection DOAJ
description The association between the division of labour and worker body size of ants is typical for species that maintain physical castes. Some studies showed that this phenomenon can be also observed in the absence of distinct morphological subcastes among workers. However, the general and consistent patterns in the size-based division of labour in monomorphic ants are largely unidentified. In this study, we performed a field experiment to investigate the link between worker body size and the division of labour of the ant <i>Lasius niger</i> (Linnaeus, 1758), which displays limited worker size variation. We demonstrated that the body size of workers exploring tuna baits is slightly but significantly smaller than the size of workers located in the upper parts of the nest. Comparing the present results with existing studies, large workers do not seem to be dedicated to work outside the nest. We suggest that monomorphic workers of certain body sizes are flexible in the choice of task they perform, and food type may be the important determinant of this choice.
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spelling doaj.art-11db48bccfc94e7981ba4c52c750b8d82023-11-20T06:28:21ZengMDPI AGInsects2075-44502020-07-0111743310.3390/insects11070433Body Size Differences between Foraging and Intranidal Workers of the Monomorphic Ant <i>Lasius niger</i>Mateusz Okrutniak0Bartosz Rom1Filip Turza2Irena M. Grześ3Department of Zoology and Animal Welfare, University of Agriculture in Krakow, al. Mickiewicza 24/28, 30-059 Kraków, PolandDepartment of Zoology and Animal Welfare, University of Agriculture in Krakow, al. Mickiewicza 24/28, 30-059 Kraków, PolandInstitute of Environmental Sciences, Jagiellonian University, ul. Gronostajowa 7, 30-387 Kraków, PolandDepartment of Zoology and Animal Welfare, University of Agriculture in Krakow, al. Mickiewicza 24/28, 30-059 Kraków, PolandThe association between the division of labour and worker body size of ants is typical for species that maintain physical castes. Some studies showed that this phenomenon can be also observed in the absence of distinct morphological subcastes among workers. However, the general and consistent patterns in the size-based division of labour in monomorphic ants are largely unidentified. In this study, we performed a field experiment to investigate the link between worker body size and the division of labour of the ant <i>Lasius niger</i> (Linnaeus, 1758), which displays limited worker size variation. We demonstrated that the body size of workers exploring tuna baits is slightly but significantly smaller than the size of workers located in the upper parts of the nest. Comparing the present results with existing studies, large workers do not seem to be dedicated to work outside the nest. We suggest that monomorphic workers of certain body sizes are flexible in the choice of task they perform, and food type may be the important determinant of this choice.https://www.mdpi.com/2075-4450/11/7/433antsbody sizemonomorphismtask division
spellingShingle Mateusz Okrutniak
Bartosz Rom
Filip Turza
Irena M. Grześ
Body Size Differences between Foraging and Intranidal Workers of the Monomorphic Ant <i>Lasius niger</i>
Insects
ants
body size
monomorphism
task division
title Body Size Differences between Foraging and Intranidal Workers of the Monomorphic Ant <i>Lasius niger</i>
title_full Body Size Differences between Foraging and Intranidal Workers of the Monomorphic Ant <i>Lasius niger</i>
title_fullStr Body Size Differences between Foraging and Intranidal Workers of the Monomorphic Ant <i>Lasius niger</i>
title_full_unstemmed Body Size Differences between Foraging and Intranidal Workers of the Monomorphic Ant <i>Lasius niger</i>
title_short Body Size Differences between Foraging and Intranidal Workers of the Monomorphic Ant <i>Lasius niger</i>
title_sort body size differences between foraging and intranidal workers of the monomorphic ant i lasius niger i
topic ants
body size
monomorphism
task division
url https://www.mdpi.com/2075-4450/11/7/433
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AT filipturza bodysizedifferencesbetweenforagingandintranidalworkersofthemonomorphicantilasiusnigeri
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