Sex-specific arrival times on the breeding grounds: hybridizing migratory skuas provide empirical support for the role of sex ratios
In migratory animals, protandry (earlier arrival of males on the breeding grounds) prevails over protogyny (females preceding males). In theory, sex differences in timing of arrival should be driven by the operational sex ratio, shifting toward protogyny in female-biased populations. However, empiri...
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University of Chicago Press
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Online Access: | http://nora.nerc.ac.uk/id/eprint/513417/ https://doi.org/10.1086/685282 |
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ftnerc:oai:nora.nerc.ac.uk:513417 2024-01-21T10:01:12+01:00 Sex-specific arrival times on the breeding grounds: hybridizing migratory skuas provide empirical support for the role of sex ratios Lisovski, Simeon Fröhlich, Anne Von Tersch, Matthew Klaassen, Marcel Peter, Hans-Ulrich Ritz, Markus S. 2016-04 http://nora.nerc.ac.uk/id/eprint/513417/ https://doi.org/10.1086/685282 unknown University of Chicago Press Lisovski, Simeon; Fröhlich, Anne; Von Tersch, Matthew; Klaassen, Marcel; Peter, Hans-Ulrich; Ritz, Markus S. 2016 Sex-specific arrival times on the breeding grounds: hybridizing migratory skuas provide empirical support for the role of sex ratios. The American Naturalist, 187 (4). 532-539. https://doi.org/10.1086/685282 <https://doi.org/10.1086/685282> Publication - Article PeerReviewed 2016 ftnerc https://doi.org/10.1086/685282 2023-12-22T00:03:08Z In migratory animals, protandry (earlier arrival of males on the breeding grounds) prevails over protogyny (females preceding males). In theory, sex differences in timing of arrival should be driven by the operational sex ratio, shifting toward protogyny in female-biased populations. However, empirical support for this hypothesis is, to date, lacking. To test this hypothesis, we analyzed arrival data from three populations of the long-distance migratory south polar skua (Catharacta maccormicki). These populations differed in their operational sex ratio caused by the unidirectional hybridization of male south polar skuas with female brown skuas (Catharacta antarctica lonnbergi). We found that arrival times were protandrous in allopatry, shifting toward protogyny in female-biased populations when breeding in sympatry. This unique observation is consistent with theoretical predictions that sex-specific arrival times should be influenced by sex ratio and that protogyny should be observed in populations with female-biased operational sex ratio. Article in Journal/Newspaper Antarc* Antarctica Catharacta maccormicki South Polar Skuas Natural Environment Research Council: NERC Open Research Archive The American Naturalist 187 4 532 539 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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description |
In migratory animals, protandry (earlier arrival of males on the breeding grounds) prevails over protogyny (females preceding males). In theory, sex differences in timing of arrival should be driven by the operational sex ratio, shifting toward protogyny in female-biased populations. However, empirical support for this hypothesis is, to date, lacking. To test this hypothesis, we analyzed arrival data from three populations of the long-distance migratory south polar skua (Catharacta maccormicki). These populations differed in their operational sex ratio caused by the unidirectional hybridization of male south polar skuas with female brown skuas (Catharacta antarctica lonnbergi). We found that arrival times were protandrous in allopatry, shifting toward protogyny in female-biased populations when breeding in sympatry. This unique observation is consistent with theoretical predictions that sex-specific arrival times should be influenced by sex ratio and that protogyny should be observed in populations with female-biased operational sex ratio. |
format |
Article in Journal/Newspaper |
author |
Lisovski, Simeon Fröhlich, Anne Von Tersch, Matthew Klaassen, Marcel Peter, Hans-Ulrich Ritz, Markus S. |
spellingShingle |
Lisovski, Simeon Fröhlich, Anne Von Tersch, Matthew Klaassen, Marcel Peter, Hans-Ulrich Ritz, Markus S. Sex-specific arrival times on the breeding grounds: hybridizing migratory skuas provide empirical support for the role of sex ratios |
author_facet |
Lisovski, Simeon Fröhlich, Anne Von Tersch, Matthew Klaassen, Marcel Peter, Hans-Ulrich Ritz, Markus S. |
author_sort |
Lisovski, Simeon |
title |
Sex-specific arrival times on the breeding grounds: hybridizing migratory skuas provide empirical support for the role of sex ratios |
title_short |
Sex-specific arrival times on the breeding grounds: hybridizing migratory skuas provide empirical support for the role of sex ratios |
title_full |
Sex-specific arrival times on the breeding grounds: hybridizing migratory skuas provide empirical support for the role of sex ratios |
title_fullStr |
Sex-specific arrival times on the breeding grounds: hybridizing migratory skuas provide empirical support for the role of sex ratios |
title_full_unstemmed |
Sex-specific arrival times on the breeding grounds: hybridizing migratory skuas provide empirical support for the role of sex ratios |
title_sort |
sex-specific arrival times on the breeding grounds: hybridizing migratory skuas provide empirical support for the role of sex ratios |
publisher |
University of Chicago Press |
publishDate |
2016 |
url |
http://nora.nerc.ac.uk/id/eprint/513417/ https://doi.org/10.1086/685282 |
genre |
Antarc* Antarctica Catharacta maccormicki South Polar Skuas |
genre_facet |
Antarc* Antarctica Catharacta maccormicki South Polar Skuas |
op_relation |
Lisovski, Simeon; Fröhlich, Anne; Von Tersch, Matthew; Klaassen, Marcel; Peter, Hans-Ulrich; Ritz, Markus S. 2016 Sex-specific arrival times on the breeding grounds: hybridizing migratory skuas provide empirical support for the role of sex ratios. The American Naturalist, 187 (4). 532-539. https://doi.org/10.1086/685282 <https://doi.org/10.1086/685282> |
op_doi |
https://doi.org/10.1086/685282 |
container_title |
The American Naturalist |
container_volume |
187 |
container_issue |
4 |
container_start_page |
532 |
op_container_end_page |
539 |
_version_ |
1788691011468263424 |