uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Benefits of cooperation with genetic kin in a subsocial spider
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution.
2008 (English)In: Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, Vol. 105, no 31, 10843-10846 p.Article in journal (Refereed) Published
Abstract [en]

Interaction within groups exploiting a common resource may be prone to cheating by selfish actions that result in disadvantages for all members of the group, including the selfish individuals. Kin selection is one mechanism by which such dilemmas can be resolved This is because selfish acts toward relatives include the cost of lowering indirect fitness benefits that could otherwise be achieved through the propagation of shared genes. Kin selection theory has been proved to be of general importance for the origin of cooperative behaviors, but other driving forces, such as direct fitness benefits, can also promote helping behavior in many cooperatively breeding taxa. Investigating transitional systems is therefore particularly suitable for understanding the influence of kin selection on the initial spread of cooperative behaviors. Here we investigated the role of kinship in cooperative feeding. We used a cross-fostering design to control for genetic relatedness and group membership. Our study animal was the periodic social spider Stegodyphus lineatus, a transitional species that belongs to a genus containing both permanent social and periodic social species. In S. lineatus, the young cooperate in prey capture and feed communally. We provide clear experimental evidence for net benefits of cooperating with kin. Genetic relatedness within groups and not association with familiar individuals directly improved feeding efficiency and growth rates, demonstrating a positive effect of kin cooperation. Hence, in communally feeding spiders, nepotism favors group retention and-reduces the conflict between selfish interests and the interests of the group.

Place, publisher, year, edition, pages
2008. Vol. 105, no 31, 10843-10846 p.
Keyword [en]
kin selection, social spiders, Stegodyphus, tragedy of the commons, nepotism
National Category
Biological Sciences
URN: urn:nbn:se:uu:diva-109156DOI: 10.1073/pnas.0804126105ISI: 000258308500041OAI: oai:DiVA.org:uu-109156DiVA: diva2:249013
Available from: 2009-10-09 Created: 2009-10-09 Last updated: 2009-10-09Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text
By organisation
Department of Ecology and Evolution
In the same journal
Proceedings of the National Academy of Sciences of the United States of America
Biological Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 192 hits
ReferencesLink to record
Permanent link

Direct link