{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,9]],"date-time":"2026-02-09T06:03:55Z","timestamp":1770617035464,"version":"3.49.0"},"reference-count":67,"publisher":"Oxford University Press (OUP)","issue":"3","license":[{"start":{"date-parts":[[2022,2,21]],"date-time":"2022-02-21T00:00:00Z","timestamp":1645401600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["PTDC\/BIA-EVF\/5249\/2014"],"award-info":[{"award-number":["PTDC\/BIA-EVF\/5249\/2014"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000858","name":"University of Sheffield","doi-asserted-by":"publisher","award":["NE\/K015257\/1"],"award-info":[{"award-number":["NE\/K015257\/1"]}],"id":[{"id":"10.13039\/501100000858","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2022,5,13]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Cooperative actions are beneficial to the group, but presumably costly to the individual co-operators. In cooperatively breeding species, helping to raise young is thought to involve important energetic costs, which could lead to elevated exposure to reactive oxygen species, resulting in oxidative stress. However, identifying such costs can be difficult if individuals adjust their investment in helping in relation to environmental conditions or their own physiological condition. Experimental approaches are therefore required to quantify the costs of helping but, to date, these have been infrequent. Here, we combined correlational and experimental data to investigate the oxidative cost of helping-at-the-nest and how this affects helping decisions in wild sociable weavers Philetairus socius, a colonial cooperatively breeding bird. At the correlational level, we found that the probability of helping was influenced by the interaction of an individual\u2019s oxidative state and age: compared to younger birds, older individuals were more likely to help when they had higher oxidative damage, and the opposite trend was found for younger individuals. After experimentally increasing the energetic cost of flight, manipulated helpers in breeding colonies decreased nestling feeding rates and incurred an increase in oxidative damage, which was not present in manipulated helpers in non-breeding colonies. This indicates that individuals decreased their helping behavior to minimize the associated costs. These results suggest that oxidative stress can influence helping decisions and underlie a trade-off between cooperation and self-maintenance, which is central to understanding when helping might take place in this and other species.<\/jats:p>","DOI":"10.1093\/beheco\/arab152","type":"journal-article","created":{"date-parts":[[2021,12,20]],"date-time":"2021-12-20T20:15:08Z","timestamp":1640031308000},"page":"504-517","source":"Crossref","is-referenced-by-count":9,"title":["The oxidative cost of helping and its minimization in a cooperative breeder"],"prefix":"10.1093","volume":"33","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7130-144X","authenticated-orcid":false,"given":"Rita","family":"Covas","sequence":"first","affiliation":[{"name":"CIBIO-InBio, Centro de Investiga\u00e7\u00e3o em Biodiversidade e Recursos Gen\u00e9ticos, Laborat\u00f3rio Associado, University of Porto, Campus Agr\u00e1rio de Vair\u00e3o, 4485-661 Vair\u00e3o, Portugal"},{"name":"BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vair\u00e3o, 4485-661 Vair\u00e3o, Portugal"},{"name":"FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, Rondebosch 7701, South Africa"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0960-8031","authenticated-orcid":false,"given":"Sophie","family":"Lardy","sequence":"additional","affiliation":[{"name":"FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, Rondebosch 7701, South Africa"},{"name":"Biog\u00e9osciences, CNRS UMR 6282, Universit\u00e9 de Bourgogne Franche-Comt\u00e9, 6 Bd Gabriel, 21000 Dijon, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4475-8035","authenticated-orcid":false,"given":"Liliana R","family":"Silva","sequence":"additional","affiliation":[{"name":"CIBIO-InBio, Centro de Investiga\u00e7\u00e3o em Biodiversidade e Recursos Gen\u00e9ticos, Laborat\u00f3rio Associado, University of Porto, Campus Agr\u00e1rio de Vair\u00e3o, 4485-661 Vair\u00e3o, Portugal"},{"name":"BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vair\u00e3o, 4485-661 Vair\u00e3o, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0464-5573","authenticated-orcid":false,"given":"Benjamin","family":"Rey","sequence":"additional","affiliation":[{"name":"Universit\u00e9 de Lyon, Universit\u00e9 Lyon 1, CNRS, Laboratoire de Biom\u00e9trie et Biologie Evolutive, UMR5558, F-69000 Villeurbanne, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0454-1053","authenticated-orcid":false,"given":"Andr\u00e9 C","family":"Ferreira","sequence":"additional","affiliation":[{"name":"CIBIO-InBio, Centro de Investiga\u00e7\u00e3o em Biodiversidade e Recursos Gen\u00e9ticos, Laborat\u00f3rio Associado, University of Porto, Campus Agr\u00e1rio de Vair\u00e3o, 4485-661 Vair\u00e3o, Portugal"},{"name":"BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vair\u00e3o, 4485-661 Vair\u00e3o, Portugal"},{"name":"Centre d\u2019Ecologie Fonctionnelle et Evolutive, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul-Valery Montpellier 3, Montpellier, France"}]},{"given":"Franck","family":"Theron","sequence":"additional","affiliation":[{"name":"CIBIO-InBio, Centro de Investiga\u00e7\u00e3o em Biodiversidade e Recursos Gen\u00e9ticos, Laborat\u00f3rio Associado, University of Porto, Campus Agr\u00e1rio de Vair\u00e3o, 4485-661 Vair\u00e3o, Portugal"},{"name":"BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vair\u00e3o, 4485-661 Vair\u00e3o, Portugal"},{"name":"Centre d\u2019Ecologie Fonctionnelle et Evolutive, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul-Valery Montpellier 3, Montpellier, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6236-3577","authenticated-orcid":false,"given":"Arnaud","family":"Tognetti","sequence":"additional","affiliation":[{"name":"Institute for Advanced Study in Toulouse, 1, esplanade de l\u2019Universit\u00e9, 31080 Toulouse Cedex 06, France"},{"name":"Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden"}]},{"given":"Bruno","family":"Faivre","sequence":"additional","affiliation":[{"name":"Biog\u00e9osciences, CNRS UMR 6282, Universit\u00e9 de Bourgogne Franche-Comt\u00e9, 6 Bd Gabriel, 21000 Dijon, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1893-3960","authenticated-orcid":false,"given":"Claire","family":"Doutrelant","sequence":"additional","affiliation":[{"name":"FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, Rondebosch 7701, South Africa"},{"name":"Centre d\u2019Ecologie Fonctionnelle et Evolutive, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul-Valery Montpellier 3, Montpellier, France"}]}],"member":"286","published-online":{"date-parts":[[2022,2,21]]},"reference":[{"key":"2022051715041277100_CIT0001","first-page":"3275","article-title":"Lazy group members are substitute helpers in carrion 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