Social isolation causers mortality by disrupting energy homeostrasis in ants

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Serval ID
serval:BIB_0BD971CCC151
Type
Article: article from journal or magazin.
Collection
Publications
Title
Social isolation causers mortality by disrupting energy homeostrasis in ants
Journal
Behavioral Ecology and Sociobiology
Author(s)
Koto A., Mersch D., Hollis B., Keller L.
ISSN
1432-0762
ISSN-L
0340-5443
Publication state
Published
Issued date
2015
Volume
69
Number
4
Pages
583-591
Language
english
Abstract
Social deprivation can have negative effects on the lives of social animals, including humans, yet little is known about the mechanisms by which social withdrawal affects animal health. Here we show that in the carpenter ant Camponotus fellah, socially isolated workers have a greatly reduced life span relative to ants kept in groups of ten individuals. By using a new tracking system, we found that social isolation resulted in important behavioral changes and greatly increased locomotor activity. The higher activity of single ants and their increased propensity to leave the nest to move along the walls suggested that the increased mortality of isolated ants might stem from an imbalance of energy income and expenditure. This view was supported by the finding that while isolated ants ingested the same amount of food as grouped ants, they retained food in the crop, hence preventing its use as an energy source. Moreover, the difference in life span between single and grouped individuals vanished when ants were not fed. This study thus underlines the role of social interactions as key regulators of energy balance, which ultimately affects aging and health in a highly social organism.
Keywords
Social insect, Behavior tracking, Social isolation, Energy homeostasis
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Create date
07/01/2015 17:47
Last modification date
20/08/2019 12:33
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