eprintid: 34129 rev_number: 14 eprint_status: archive userid: 1482 importid: 105 dir: disk0/00/03/41/29 datestamp: 2020-12-09 14:35:50 lastmod: 2021-10-27 13:38:02 status_changed: 2020-12-09 14:35:50 type: article metadata_visibility: show creators_name: Faria, Gonçalo creators_name: Gardner, Andy creators_idrefppn: 256161402 creators_idrefppn: 174653964 creators_affiliation: Institute for Advanced Study in Toulouse;School of Biology, University of St Andrews creators_halaffid: 506116;134239 creators_halaffid: 134239 title: Does kin discrimination promote cooperation? ispublished: pub subjects: subjects_ECO abstract: Genetic relatedness is a key driver of the evolution of cooperation. One mechanism that may ensure social partners are genetically related is kin discrimination, in which individuals are able to distinguish kin from non-kin and adjust their behaviour accordingly. However, the impact of kin discrimination upon the overall level of cooperation remains obscure. Specifically, while kin discrimination allows an individual to help more-related social partners over less-related social partners, it is unclear whether and how the population average level of cooperation that is evolutionarily favoured should differ under kin discrimination versus indiscriminate social behaviour. Here, we perform a general mathematical analysis in order to assess whether, when and in which direction kin discrimination changes the average level of cooperation in an evolving population. We find that kin discrimination may increase, decrease or leave unchanged the average level of cooperation, depending upon whether the optimal level of cooperation is a convex, concave or linear function of genetic relatedness. We develop an extension of the classic ‘tragedy of the commons' model of cooperation in order to provide an illustration of these results. Our analysis provides a method to guide future research on the evolutionary consequences of kin discrimination. date: 2020-03 date_type: published publisher: The Royal Society id_number: 10.1098/rsbl.2019.0742 official_url: http://iast.fr/pub/124122 faculty: tse divisions: tse language: en has_fulltext: TRUE doi: 10.1098/rsbl.2019.0742 view_date_year: 2020 full_text_status: public publication: Biology Letters volume: 16 number: 3 refereed: TRUE issn: 1744-9561 oai_identifier: oai:tse-fr.eu:124122 harvester_local_overwrite: publish_to_hal harvester_local_overwrite: faculty harvester_local_overwrite: pending harvester_local_overwrite: note harvester_local_overwrite: creators_affiliation harvester_local_overwrite: issn harvester_local_overwrite: creators_halaffid harvester_local_overwrite: publisher harvester_local_overwrite: id_number harvester_local_overwrite: hal_id harvester_local_overwrite: hal_version harvester_local_overwrite: hal_url harvester_local_overwrite: hal_passwd harvester_local_overwrite: doi harvester_local_overwrite: creators_idrefppn oai_lastmod: 2020-09-01T06:51:19Z oai_set: tse site: ut1 publish_to_hal: TRUE hal_id: hal-03048825 hal_passwd: 4&31sm hal_version: 1 hal_url: https://hal.archives-ouvertes.fr/hal-03048825 citation: Faria, Gonçalo and Gardner, Andy (2020) Does kin discrimination promote cooperation? Biology Letters, 16 (3). document_url: https://publications.ut-capitole.fr/id/eprint/34129/1/rsbl.2019.0742.pdf