Causes and consequences of pair‐bond disruption in a sex‐skewed population of a long‐lived monogamous seabird
Abstract Many animals form long‐term monogamous pair bonds, and the disruption of a pair bond (through either divorce or widowhood) can have significant consequences for individual vital rates (survival, breeding, and breeding success probabilities) and life‐history outcomes (lifetime reproductive s...
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crwiley:10.1002/ecm.1522 2024-09-15T18:03:43+00:00 Causes and consequences of pair‐bond disruption in a sex‐skewed population of a long‐lived monogamous seabird Sun, Ruijiao Barbraud, Christophe Weimerskirch, Henri Delord, Karine Patrick, Samantha C. Caswell, Hal Jenouvrier, Stephanie National Science Foundation of Sri Lanka European Research Council Terres Australes et Antarctiques Françaises Institut Polaire Français Paul Emile Victor 2022 http://dx.doi.org/10.1002/ecm.1522 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ecm.1522 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ecm.1522 https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.1002/ecm.1522 en eng Wiley http://creativecommons.org/licenses/by-nc/4.0/ Ecological Monographs volume 92, issue 3 ISSN 0012-9615 1557-7015 journal-article 2022 crwiley https://doi.org/10.1002/ecm.1522 2024-08-13T04:16:14Z Abstract Many animals form long‐term monogamous pair bonds, and the disruption of a pair bond (through either divorce or widowhood) can have significant consequences for individual vital rates (survival, breeding, and breeding success probabilities) and life‐history outcomes (lifetime reproductive success [LRS], life expectancy). Here, we investigated the causes and consequences of pair‐bond disruption in wandering albatross ( Diomedea exulans ). State‐of‐the‐art statistical and mathematical approaches were developed to estimate divorce and widowhood rates and their impacts on vital rates and life‐history outcomes. In this population, females incur a higher mortality rate due to incidental fishery bycatch, so the population is male‐skewed. Therefore, we first posited that males would show higher widowhood rates negatively correlated with fishing effort and females would have higher divorce rates because they have more mating opportunities. Furthermore, we expected that divorce could be an adaptive strategy, whereby individuals improved breeding success by breeding with a new partner of better quality. Finally, we posited that pair‐bond disruptions could reduce survival and breeding probabilities owing to the cost of remating processes, with important consequences for life‐history outcomes. As expected, we showed that males had higher widowhood rates than females and females had higher divorce rates in this male‐skewed population. However, no correlation was found between fishing effort and male widowhood. Secondly, contrary to our expectation, we found that divorce was likely nonadaptive in this population. We propose that divorce in this population is caused by an intruder who outcompetes the original partner in line with the so‐called forced divorce hypothesis. Furthermore, we found a 16.7% and 18.0% reduction in LRS only for divorced and widowed males, respectively, owing to missing breeding seasons after a pair‐bond disruption. Finally, we found that divorced individuals were more likely to divorce again, ... Article in Journal/Newspaper Diomedea exulans Wandering Albatross Wiley Online Library Ecological Monographs 92 3 |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract Many animals form long‐term monogamous pair bonds, and the disruption of a pair bond (through either divorce or widowhood) can have significant consequences for individual vital rates (survival, breeding, and breeding success probabilities) and life‐history outcomes (lifetime reproductive success [LRS], life expectancy). Here, we investigated the causes and consequences of pair‐bond disruption in wandering albatross ( Diomedea exulans ). State‐of‐the‐art statistical and mathematical approaches were developed to estimate divorce and widowhood rates and their impacts on vital rates and life‐history outcomes. In this population, females incur a higher mortality rate due to incidental fishery bycatch, so the population is male‐skewed. Therefore, we first posited that males would show higher widowhood rates negatively correlated with fishing effort and females would have higher divorce rates because they have more mating opportunities. Furthermore, we expected that divorce could be an adaptive strategy, whereby individuals improved breeding success by breeding with a new partner of better quality. Finally, we posited that pair‐bond disruptions could reduce survival and breeding probabilities owing to the cost of remating processes, with important consequences for life‐history outcomes. As expected, we showed that males had higher widowhood rates than females and females had higher divorce rates in this male‐skewed population. However, no correlation was found between fishing effort and male widowhood. Secondly, contrary to our expectation, we found that divorce was likely nonadaptive in this population. We propose that divorce in this population is caused by an intruder who outcompetes the original partner in line with the so‐called forced divorce hypothesis. Furthermore, we found a 16.7% and 18.0% reduction in LRS only for divorced and widowed males, respectively, owing to missing breeding seasons after a pair‐bond disruption. Finally, we found that divorced individuals were more likely to divorce again, ... |
author2 |
National Science Foundation of Sri Lanka European Research Council Terres Australes et Antarctiques Françaises Institut Polaire Français Paul Emile Victor |
format |
Article in Journal/Newspaper |
author |
Sun, Ruijiao Barbraud, Christophe Weimerskirch, Henri Delord, Karine Patrick, Samantha C. Caswell, Hal Jenouvrier, Stephanie |
spellingShingle |
Sun, Ruijiao Barbraud, Christophe Weimerskirch, Henri Delord, Karine Patrick, Samantha C. Caswell, Hal Jenouvrier, Stephanie Causes and consequences of pair‐bond disruption in a sex‐skewed population of a long‐lived monogamous seabird |
author_facet |
Sun, Ruijiao Barbraud, Christophe Weimerskirch, Henri Delord, Karine Patrick, Samantha C. Caswell, Hal Jenouvrier, Stephanie |
author_sort |
Sun, Ruijiao |
title |
Causes and consequences of pair‐bond disruption in a sex‐skewed population of a long‐lived monogamous seabird |
title_short |
Causes and consequences of pair‐bond disruption in a sex‐skewed population of a long‐lived monogamous seabird |
title_full |
Causes and consequences of pair‐bond disruption in a sex‐skewed population of a long‐lived monogamous seabird |
title_fullStr |
Causes and consequences of pair‐bond disruption in a sex‐skewed population of a long‐lived monogamous seabird |
title_full_unstemmed |
Causes and consequences of pair‐bond disruption in a sex‐skewed population of a long‐lived monogamous seabird |
title_sort |
causes and consequences of pair‐bond disruption in a sex‐skewed population of a long‐lived monogamous seabird |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1002/ecm.1522 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ecm.1522 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ecm.1522 https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.1002/ecm.1522 |
genre |
Diomedea exulans Wandering Albatross |
genre_facet |
Diomedea exulans Wandering Albatross |
op_source |
Ecological Monographs volume 92, issue 3 ISSN 0012-9615 1557-7015 |
op_rights |
http://creativecommons.org/licenses/by-nc/4.0/ |
op_doi |
https://doi.org/10.1002/ecm.1522 |
container_title |
Ecological Monographs |
container_volume |
92 |
container_issue |
3 |
_version_ |
1810441191225819136 |