{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,23]],"date-time":"2025-09-23T14:13:47Z","timestamp":1758636827864,"version":"3.41.2"},"reference-count":109,"publisher":"Oxford University Press (OUP)","issue":"2","license":[{"start":{"date-parts":[[2024,2,28]],"date-time":"2024-02-28T00:00:00Z","timestamp":1709078400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100020133","name":"FitzPatrick Institute of African Ornithology, University of Cape Town","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100020133","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2024,3,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Predation risk can influence behavior, reproductive investment, and, ultimately, individuals\u2019 fitness. In high-risk environments, females often reduce allocation to reproduction, which can affect offspring phenotype and breeding success. In cooperative breeders, helpers contribute to feed the offspring, and groups often live and forage together. Helpers can, therefore, improve reproductive success, but also influence breeders\u2019 condition, stress levels and predation risk. Yet, whether helper presence can buffer the effects of predation risk on maternal reproductive allocation remains unstudied. Here, we used the cooperatively breeding sociable weaver Philetairus socius to test the interactive effects of predation risk and breeding group size on maternal allocation to clutch size, egg mass, yolk mass, and yolk corticosterone. We increased perceived predation risk before egg laying using playbacks of the adults\u2019 main predator, gabar goshawk (Micronisus gabar). We also tested the interactive effects of group size and prenatal predator playbacks on offspring hatching and fledging probability. Predator-exposed females laid eggs with 4% lighter yolks, but predator-calls\u2019 exposure did not clearly affect clutch size, egg mass, or egg corticosterone levels. Playback-treatment effects on yolk mass were independent of group size, suggesting that helpers\u2019 presence did not mitigate predation risk effects on maternal allocation. Although predator-induced reductions in yolk mass may decrease nutrient availability to offspring, potentially affecting their survival, playback-treatment effects on hatching and fledging success were not evident. The interplay between helper presence and predator effects on maternal reproductive investment is still an overlooked area of life history and physiological evolutionary trade-offs that requires further studies.<\/jats:p>","DOI":"10.1093\/beheco\/arae010","type":"journal-article","created":{"date-parts":[[2024,2,27]],"date-time":"2024-02-27T22:55:31Z","timestamp":1709074531000},"source":"Crossref","is-referenced-by-count":3,"title":["Interplay of cooperative breeding and predation risk on egg allocation and reproductive output"],"prefix":"10.1093","volume":"35","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6049-3690","authenticated-orcid":false,"given":"Rita","family":"Fortuna","sequence":"first","affiliation":[{"name":"CIBIO, Centro de Investiga\u00e7\u00e3o em Biodiversidade e Recursos Gen\u00e9ticos, InBIO Laborat\u00f3rio Associado, Campus de Vair\u00e3o, Universidade do Porto , 4485-661, Vair\u00e3o , Portugal"},{"name":"Departamento de Biologia, Faculdade de Ci\u00eancias, Universidade do Porto , 4099-002, Porto , Portugal"},{"name":"BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO , Campus de Vair\u00e3o, 4485-661, Vair\u00e3o , Portugal"},{"name":"Centre for Biodiversity Dynamics, Institutt for Biologi, NTNU , 7491, Trondheim , Norway"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7130-144X","authenticated-orcid":false,"given":"Rita","family":"Covas","sequence":"additional","affiliation":[{"name":"CIBIO, Centro de Investiga\u00e7\u00e3o em Biodiversidade e Recursos Gen\u00e9ticos, InBIO Laborat\u00f3rio Associado, Campus de Vair\u00e3o, Universidade do Porto , 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, DST-NRF Centre of Excellence, University of Cape Town , 7701, Cape Town , South Africa"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4095-6088","authenticated-orcid":false,"given":"Pietro B","family":"D'Amelio","sequence":"additional","affiliation":[{"name":"CEFE, Univ Montpellier, CNRS, EPHE , IRD, 34293, Montpellier , France"},{"name":"Universit\u00e9 Paris-Saclay, CNRS, Institut des Neurosciences Paris-Saclay , 91400, Saclay , France"}]},{"given":"Liliana R","family":"Silva","sequence":"additional","affiliation":[{"name":"CIBIO, Centro de Investiga\u00e7\u00e3o em Biodiversidade e Recursos Gen\u00e9ticos, InBIO Laborat\u00f3rio Associado, Campus de Vair\u00e3o, Universidade do Porto , 4485-661, Vair\u00e3o , Portugal"},{"name":"BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO , Campus de Vair\u00e3o, 4485-661, Vair\u00e3o , Portugal"}]},{"given":"Charline","family":"Parenteau","sequence":"additional","affiliation":[{"name":"Centre d\u2019Etudes Biologiques de Chiz\u00e9, CNRS-La Rochelle Universit\u00e9 , 79360, Villiers-en-Bois , France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2349-8513","authenticated-orcid":false,"given":"Louis","family":"Bliard","sequence":"additional","affiliation":[{"name":"Department of Evolutionary Biology & Environmental Studies, University of Zurich , Winterthurerstrasse 190, CH-8057 Zurich , Switzerland"}]},{"given":"Fanny","family":"Rybak","sequence":"additional","affiliation":[{"name":"Universit\u00e9 Paris-Saclay, CNRS, Institut des Neurosciences Paris-Saclay , 91400, Saclay , France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1893-3960","authenticated-orcid":false,"given":"Claire","family":"Doutrelant","sequence":"additional","affiliation":[{"name":"FitzPatrick Institute, DST-NRF Centre of Excellence, University of Cape Town , 7701, Cape Town , South Africa"},{"name":"CEFE, Univ Montpellier, CNRS, EPHE , IRD, 34293, Montpellier , France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1182-2299","authenticated-orcid":false,"given":"Matthieu","family":"Paquet","sequence":"additional","affiliation":[{"name":"Institute of Mathematics of Bordeaux, University of Bordeaux , CNRS, Bordeaux INP, 33405, Talence , France"},{"name":"Theoretical and Experimental Ecology Station (SETE), CNRS , 09200, Moulis , France"}]}],"member":"286","published-online":{"date-parts":[[2024,2,28]]},"reference":[{"issue":"1","key":"2024031415131003000_CIT0001","doi-asserted-by":"crossref","first-page":"1601","DOI":"10.1038\/s41467-019-09138-5","article-title":"Adaptive individual variation in phenological responses to perceived predation levels","volume":"10","author":"Abbey-Lee","year":"2019","journal-title":"Nat Commun"},{"issue":"3","key":"2024031415131003000_CIT0002","doi-asserted-by":"crossref","first-page":"857","DOI":"10.1093\/beheco\/arv228","article-title":"Behavioral and morphological responses to perceived predation risk: a field experiment in passerines","volume":"27","author":"Abbey-Lee","year":"2016","journal-title":"Behav Ecol"},{"issue":"7","key":"2024031415131003000_CIT0003","doi-asserted-by":"crossref","first-page":"e2112404119","DOI":"10.1073\/pnas.2112404119","article-title":"Fear of predators in free-living wildlife reduces population growth over generations","volume":"119","author":"Allen","year":"2022","journal-title":"Proc Natl Acad Sci USA"},{"issue":"1","key":"2024031415131003000_CIT0004","doi-asserted-by":"crossref","first-page":"47","DOI":"10.1111\/1365-2656.12759","article-title":"Review: allee effects in social species","volume":"87","author":"Angulo","year":"2018","journal-title":"J Anim Ecol"},{"issue":"3","key":"2024031415131003000_CIT0005","doi-asserted-by":"crossref","first-page":"252","DOI":"10.1111\/j.2006.0908-8857.03624.x","article-title":"Individual quality and food availability determine yolk and egg mass and egg composition in tree swallows Tachycineta 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