Risk‐taking behaviour relates to timing of breeding in a sub‐Antarctic rainforest bird
Within‐population variation in timing of breeding may be linked to a trade‐off between the risks and benefits of breeding earlier. This trade‐off may be mediated by individual risk‐taking behaviour, but this needs to be assessed in detail in wild populations. Here, we recorded timing of breeding and...
Published in: | Ibis |
---|---|
Main Authors: | , , , |
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2021
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/ibi.12941 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ibi.12941 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/ibi.12941 |
id |
crwiley:10.1111/ibi.12941 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/ibi.12941 2024-06-23T07:47:02+00:00 Risk‐taking behaviour relates to timing of breeding in a sub‐Antarctic rainforest bird Poblete, Yanina Botero‐Delgadillo, Esteban Espíndola‐Hernández, Pamela Vásquez, Rodrigo A. Fondo Nacional de Desarrollo Científico y Tecnológico Fondo de Fomento al Desarrollo Científico y Tecnológico Fundación para el futuro de Colombia 2021 http://dx.doi.org/10.1111/ibi.12941 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ibi.12941 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/ibi.12941 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ibis volume 163, issue 3, page 812-823 ISSN 0019-1019 1474-919X journal-article 2021 crwiley https://doi.org/10.1111/ibi.12941 2024-06-11T04:51:16Z Within‐population variation in timing of breeding may be linked to a trade‐off between the risks and benefits of breeding earlier. This trade‐off may be mediated by individual risk‐taking behaviour, but this needs to be assessed in detail in wild populations. Here, we recorded timing of breeding and risk‐taking behaviour during three consecutive breeding seasons in a resident population of Thorn‐tailed Rayadito Aphrastura spinicauda located in Navarino Island (55°S), southern Chile. Navarino is a high‐latitude, highly seasonal continental island in southern Chile where early breeding may be risky for rayaditos, given the presence of low temperatures, storms and relatively low food abundance during early spring. We used novel environment tests to assess exploratory behaviour, which in turn was used as a proxy of risk‐taking behaviour. In addition, we evaluated the potential consequences of timing of breeding and risk‐taking behaviour on three measures of reproductive success: clutch size, number of fledglings produced and body condition of the offspring. We found that risk‐prone individuals started breeding earlier than risk‐averse individuals but we did not find evidence for an effect of timing of breeding on any of the variables of seasonal breeding success. However, we observed that fast‐exploring females tended to lay smaller clutches. Measurements reflecting lifetime reproductive success may better reflect an effect of timing of breeding and risk‐taking behaviour, but this needs to be studied. Our results support the idea that risk‐taking behaviour is linked to early breeding in high‐latitude environments. We suggest that, despite the risks that low temperatures and snowstorms pose to breeding rayaditos during early spring, it is possible that early breeders increase the probability of occupying better nesting cavities and they may adjust the timing of breeding to match brood provisioning with peak resource abundance. Article in Journal/Newspaper Antarc* Antarctic Wiley Online Library Antarctic Ibis 163 3 812 823 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Within‐population variation in timing of breeding may be linked to a trade‐off between the risks and benefits of breeding earlier. This trade‐off may be mediated by individual risk‐taking behaviour, but this needs to be assessed in detail in wild populations. Here, we recorded timing of breeding and risk‐taking behaviour during three consecutive breeding seasons in a resident population of Thorn‐tailed Rayadito Aphrastura spinicauda located in Navarino Island (55°S), southern Chile. Navarino is a high‐latitude, highly seasonal continental island in southern Chile where early breeding may be risky for rayaditos, given the presence of low temperatures, storms and relatively low food abundance during early spring. We used novel environment tests to assess exploratory behaviour, which in turn was used as a proxy of risk‐taking behaviour. In addition, we evaluated the potential consequences of timing of breeding and risk‐taking behaviour on three measures of reproductive success: clutch size, number of fledglings produced and body condition of the offspring. We found that risk‐prone individuals started breeding earlier than risk‐averse individuals but we did not find evidence for an effect of timing of breeding on any of the variables of seasonal breeding success. However, we observed that fast‐exploring females tended to lay smaller clutches. Measurements reflecting lifetime reproductive success may better reflect an effect of timing of breeding and risk‐taking behaviour, but this needs to be studied. Our results support the idea that risk‐taking behaviour is linked to early breeding in high‐latitude environments. We suggest that, despite the risks that low temperatures and snowstorms pose to breeding rayaditos during early spring, it is possible that early breeders increase the probability of occupying better nesting cavities and they may adjust the timing of breeding to match brood provisioning with peak resource abundance. |
author2 |
Fondo Nacional de Desarrollo Científico y Tecnológico Fondo de Fomento al Desarrollo Científico y Tecnológico Fundación para el futuro de Colombia |
format |
Article in Journal/Newspaper |
author |
Poblete, Yanina Botero‐Delgadillo, Esteban Espíndola‐Hernández, Pamela Vásquez, Rodrigo A. |
spellingShingle |
Poblete, Yanina Botero‐Delgadillo, Esteban Espíndola‐Hernández, Pamela Vásquez, Rodrigo A. Risk‐taking behaviour relates to timing of breeding in a sub‐Antarctic rainforest bird |
author_facet |
Poblete, Yanina Botero‐Delgadillo, Esteban Espíndola‐Hernández, Pamela Vásquez, Rodrigo A. |
author_sort |
Poblete, Yanina |
title |
Risk‐taking behaviour relates to timing of breeding in a sub‐Antarctic rainforest bird |
title_short |
Risk‐taking behaviour relates to timing of breeding in a sub‐Antarctic rainforest bird |
title_full |
Risk‐taking behaviour relates to timing of breeding in a sub‐Antarctic rainforest bird |
title_fullStr |
Risk‐taking behaviour relates to timing of breeding in a sub‐Antarctic rainforest bird |
title_full_unstemmed |
Risk‐taking behaviour relates to timing of breeding in a sub‐Antarctic rainforest bird |
title_sort |
risk‐taking behaviour relates to timing of breeding in a sub‐antarctic rainforest bird |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1111/ibi.12941 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ibi.12941 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/ibi.12941 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Ibis volume 163, issue 3, page 812-823 ISSN 0019-1019 1474-919X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/ibi.12941 |
container_title |
Ibis |
container_volume |
163 |
container_issue |
3 |
container_start_page |
812 |
op_container_end_page |
823 |
_version_ |
1802650301114613760 |