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Interplay of cooperative breeding and predation risk on egg allocation and reproductive output

hal.structure.identifierCentro de Investigacão em Biodiversidade e Recursos Genéticos [CIBIO]
dc.contributor.authorFORTUNA, Rita
hal.structure.identifierCentro de Investigacão em Biodiversidade e Recursos Genéticos [CIBIO]
hal.structure.identifierFitzPatrick Institute of African Ornithology
dc.contributor.authorCOVAS, Rita
hal.structure.identifierCentre d’Ecologie Fonctionnelle et Evolutive [CEFE]
dc.contributor.authorD'AMELI, Pietro
hal.structure.identifierUniversity of Cape Town
hal.structure.identifierCentre d’Ecologie Fonctionnelle et Evolutive [CEFE]
dc.contributor.authorSILVA, Liliana
hal.structure.identifierCentre d'Études Biologiques de Chizé - UMR 7372 [CEBC]
dc.contributor.authorPARENTEAU, Charline
hal.structure.identifierUniversität Zürich [Zürich] = University of Zurich [UZH]
dc.contributor.authorBLIARD, Louis
hal.structure.identifierInstitut des Neurosciences Paris-Saclay [NeuroPSI]
dc.contributor.authorRYBAK, Fanny
hal.structure.identifierCentre d’Ecologie Fonctionnelle et Evolutive [CEFE]
hal.structure.identifierFitzPatrick Institute of African Ornithology
dc.contributor.authorDOUTRELANT, Claire
hal.structure.identifierStation d'Ecologie Théorique et Expérimentale [SETE]
hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
dc.contributor.authorPAQUET, Matthieu
dc.date.accessioned2024-04-04T02:29:42Z
dc.date.available2024-04-04T02:29:42Z
dc.date.issued2024
dc.identifier.issn1045-2249
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/190201
dc.description.abstractEnPredation risk can influence behavior, reproductive investment, and, ultimately, individuals’ 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’ 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’ 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’ 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’ 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.
dc.language.isoen
dc.publisherOxford University Press (OUP)
dc.subject.enclutch size
dc.subject.encooperative breeding
dc.subject.encorticosterone
dc.subject.enegg mass
dc.subject.engroup size
dc.subject.enmaternal allocation
dc.subject.enplayback experiment
dc.subject.enpredation risk
dc.subject.enreproductive output
dc.subject.enyolk mass
dc.title.enInterplay of cooperative breeding and predation risk on egg allocation and reproductive output
dc.typeArticle de revue
dc.identifier.doi10.1093/beheco/arae010
dc.subject.halSciences du Vivant [q-bio]/Biologie animale/Zoologie des vertébrés
dc.subject.halSciences de l'environnement/Biodiversité et Ecologie
bordeaux.journalBehavioral Ecology
bordeaux.pagearae010
bordeaux.volume35
bordeaux.hal.laboratoriesInstitut de Mathématiques de Bordeaux (IMB) - UMR 5251*
bordeaux.issue2
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifierhal-04511178
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04511178v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Behavioral%20Ecology&rft.date=2024&rft.volume=35&rft.issue=2&rft.spage=arae010&rft.epage=arae010&rft.eissn=1045-2249&rft.issn=1045-2249&rft.au=FORTUNA,%20Rita&COVAS,%20Rita&D'AMELI,%20Pietro&SILVA,%20Liliana&PARENTEAU,%20Charline&rft.genre=article


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