A space oddity: geographic and specific modulation of migration in Eudyptes penguins

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dc.contributor.authorThiebot, Jean-Baptisteen_ZA
dc.contributor.authorCherel, Yvesen_ZA
dc.contributor.authorCrawford, Robert J Men_ZA
dc.contributor.authorMakhado, Azwianewi Ben_ZA
dc.contributor.authorTrathan, Philip Nen_ZA
dc.contributor.authorPinaud, Daviden_ZA
dc.contributor.authorBost, Charles-Andréen_ZA
dc.date.accessioned2015-12-28T06:49:30Z
dc.date.available2015-12-28T06:49:30Z
dc.date.issued2013en_ZA
dc.description.abstractPost-breeding migration in land-based marine animals is thought to offset seasonal deterioration in foraging or other important environmental conditions at the breeding site. However the inter-breeding distribution of such animals may reflect not only their optimal habitat, but more subtle influences on an individual's migration path, including such factors as the intrinsic influence of each locality's paleoenvironment, thereby influencing animals' wintering distribution. In this study we investigated the influence of the regional marine environment on the migration patterns of a poorly known, but important seabird group. We studied the inter-breeding migration patterns in three species of Eudyptes penguins ( E. chrysolophus , E. filholi and E. moseleyi ), the main marine prey consumers amongst the World's seabirds. Using ultra-miniaturized logging devices (light-based geolocators) and satellite tags, we tracked 87 migrating individuals originating from 4 sites in the southern Indian Ocean (Marion, Crozet, Kerguelen and Amsterdam Islands) and modelled their wintering habitat using the MADIFA niche modelling technique. For each site, sympatric species followed a similar compass bearing during migration with consistent species-specific latitudinal shifts. Within each species, individuals breeding on different islands showed contrasting migration patterns but similar winter habitat preferences driven by sea-surface temperatures. Our results show that inter-breeding migration patterns in sibling penguin species depend primarily on the site of origin and secondly on the species. Such site-specific migration bearings, together with similar wintering habitat used by parapatrics, support the hypothesis that migration behaviour is affected by the intrinsic characteristics of each site. The paleo-oceanographic conditions (primarily, sea-surface temperatures) when the populations first colonized each of these sites may have been an important determinant of subsequent migration patterns. Based on previous chronological schemes of taxonomic radiation and geographical expansion of the genus Eudyptes , we propose a simple scenario to depict the chronological onset of contrasting migration patterns within this penguin group.en_ZA
dc.identifier.apacitationThiebot, J., Cherel, Y., Crawford, R. J. M., Makhado, A. B., Trathan, P. N., Pinaud, D., & Bost, C. (2013). A space oddity: geographic and specific modulation of migration in Eudyptes penguins. <i>PLoS One</i>, http://hdl.handle.net/11427/16059en_ZA
dc.identifier.chicagocitationThiebot, Jean-Baptiste, Yves Cherel, Robert J M Crawford, Azwianewi B Makhado, Philip N Trathan, David Pinaud, and Charles-André Bost "A space oddity: geographic and specific modulation of migration in Eudyptes penguins." <i>PLoS One</i> (2013) http://hdl.handle.net/11427/16059en_ZA
dc.identifier.citationThiebot, J. B., Cherel, Y., Crawford, R. J., Makhado, A. B., Trathan, P. N., Pinaud, D., & Bost, C. A. (2013). A space oddity: geographic and specific modulation of migration in Eudyptes penguins. PloS one, 8(8), e71429. doi:10.1371/journal.pone.0071429en_ZA
dc.identifier.ris TY - Journal Article AU - Thiebot, Jean-Baptiste AU - Cherel, Yves AU - Crawford, Robert J M AU - Makhado, Azwianewi B AU - Trathan, Philip N AU - Pinaud, David AU - Bost, Charles-André AB - Post-breeding migration in land-based marine animals is thought to offset seasonal deterioration in foraging or other important environmental conditions at the breeding site. However the inter-breeding distribution of such animals may reflect not only their optimal habitat, but more subtle influences on an individual's migration path, including such factors as the intrinsic influence of each locality's paleoenvironment, thereby influencing animals' wintering distribution. In this study we investigated the influence of the regional marine environment on the migration patterns of a poorly known, but important seabird group. We studied the inter-breeding migration patterns in three species of Eudyptes penguins ( E. chrysolophus , E. filholi and E. moseleyi ), the main marine prey consumers amongst the World's seabirds. Using ultra-miniaturized logging devices (light-based geolocators) and satellite tags, we tracked 87 migrating individuals originating from 4 sites in the southern Indian Ocean (Marion, Crozet, Kerguelen and Amsterdam Islands) and modelled their wintering habitat using the MADIFA niche modelling technique. For each site, sympatric species followed a similar compass bearing during migration with consistent species-specific latitudinal shifts. Within each species, individuals breeding on different islands showed contrasting migration patterns but similar winter habitat preferences driven by sea-surface temperatures. Our results show that inter-breeding migration patterns in sibling penguin species depend primarily on the site of origin and secondly on the species. Such site-specific migration bearings, together with similar wintering habitat used by parapatrics, support the hypothesis that migration behaviour is affected by the intrinsic characteristics of each site. The paleo-oceanographic conditions (primarily, sea-surface temperatures) when the populations first colonized each of these sites may have been an important determinant of subsequent migration patterns. Based on previous chronological schemes of taxonomic radiation and geographical expansion of the genus Eudyptes , we propose a simple scenario to depict the chronological onset of contrasting migration patterns within this penguin group. DA - 2013 DB - OpenUCT DO - 10.1371/journal.pone.0071429 DP - University of Cape Town J1 - PLoS One LK - https://open.uct.ac.za PB - University of Cape Town PY - 2013 T1 - A space oddity: geographic and specific modulation of migration in Eudyptes penguins TI - A space oddity: geographic and specific modulation of migration in Eudyptes penguins UR - http://hdl.handle.net/11427/16059 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/16059
dc.identifier.urihttp://dx.doi.org/10.1371/journal.pone.0071429
dc.identifier.vancouvercitationThiebot J, Cherel Y, Crawford RJM, Makhado AB, Trathan PN, Pinaud D, et al. A space oddity: geographic and specific modulation of migration in Eudyptes penguins. PLoS One. 2013; http://hdl.handle.net/11427/16059.en_ZA
dc.language.isoengen_ZA
dc.publisherPublic Library of Scienceen_ZA
dc.publisher.departmentAnimal Demography Unit (ADU)en_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.rightsThis is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.en_ZA
dc.rights.holder© 2013 Thiebot et alen_ZA
dc.rights.urihttp://creativecommons.org/licenses/by/4.0en_ZA
dc.sourcePLoS Oneen_ZA
dc.source.urihttp://journals.plos.org/plosoneen_ZA
dc.subject.otherPenguinsen_ZA
dc.subject.otherAnimal migrationen_ZA
dc.subject.otherHabitatsen_ZA
dc.subject.otherAnimal sexual behavioren_ZA
dc.subject.otherSeabirdsen_ZA
dc.subject.otherPaleooceanographyen_ZA
dc.subject.otherBirdsen_ZA
dc.subject.otherIndian Oceanen_ZA
dc.titleA space oddity: geographic and specific modulation of migration in Eudyptes penguinsen_ZA
dc.typeJournal Articleen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceArticleen_ZA
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