Show simple item record

dc.contributor.authorCubaynes, Sarah
dc.contributor.authorAars, Jon
dc.contributor.authorYoccoz, Nigel
dc.contributor.authorPradel, Roger
dc.contributor.authorWiig, Øystein
dc.contributor.authorIms, Rolf Anker
dc.contributor.authorGimenez, Olivier
dc.date.accessioned2021-08-23T11:15:56Z
dc.date.available2021-08-23T11:15:56Z
dc.date.issued2021-03-10
dc.description.abstract<ol> <li>In species providing extended parental care, one or both parents care for altricial young over a period including more than one breeding season. We expect large parental investment and long-term dependency within family units to cause high variability in life trajectories among individuals with complex consequences at the population level. So far, models for estimating demographic parameters in free-ranging animal populations mostly ignore extended parental care, thereby limiting our understanding of its consequences on parents and offspring life histories.</li> <li>We designed a capture–recapture multievent model for studying the demography of species providing extended parental care. It handles statistical multiple-year dependency among individual demographic parameters grouped within family units, variable litter size, and uncertainty on the timing at offspring independence. It allows for the evaluation of trade-offs among demographic parameters, the influence of past reproductive history on the caring parent's survival status, breeding probability, and litter size probability, while accounting for imperfect detection of family units. We assess the model performance using simulated data and illustrate its use with a long-term dataset collected on the Svalbard polar bears (Ursus maritimus).</li> <li>Our model performed well in terms of bias and mean square error and in estimating demographic parameters in all simulated scenarios, both when offspring departure probability from the family unit occurred at a constant rate or varied during the field season depending on the date of capture. For the polar bear case study, we provide estimates of adult and dependent offspring survival rates, breeding probability, and litter size probability. Results showed that the outcome of the previous reproduction influenced breeding probability.</li> <li>Overall, our results show the importance of accounting for i) the multiple-year statistical dependency within family units, ii) uncertainty on the timing at offspring independence, and iii) past reproductive history of the caring parent. If ignored, estimates obtained for breeding probability, litter size, and survival can be biased. This is of interest in terms of conservation because species providing extended parental care are often long-living mammals vulnerable or threatened with extinction.</li> </ol>en_US
dc.identifier.citationCubaynes, Aars, Yoccoz, Pradel, Wiig, Ims, Gimenez. Modeling the demography of species providing extended parental care: A capture–recapture multievent model with a case study on polar bears (Ursus maritimus). Ecology and Evolution. 2021;11(7):3380-3392en_US
dc.identifier.cristinIDFRIDAID 1926878
dc.identifier.doi10.1002/ece3.7296
dc.identifier.issn2045-7758
dc.identifier.urihttps://hdl.handle.net/10037/22208
dc.language.isoengen_US
dc.publisherWileyen_US
dc.relation.journalEcology and Evolution
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2021 The Author(s)en_US
dc.subjectVDP::Mathematics and natural science: 400::Zoology and botany: 480en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480en_US
dc.titleModeling the demography of species providing extended parental care: A capture–recapture multievent model with a case study on polar bears (Ursus maritimus)en_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


File(s) in this item

Thumbnail

This item appears in the following collection(s)

Show simple item record