Effects of individual pre-fledging traits and environmental conditions on return patterns in juvenile king penguins.
Despite the importance of early life stages in individuals' life history and population dynamics, very few studies have focused on the constraints to which these juvenile traits are subjected. Based on 10 years of automatic monitoring of over 2500 individuals, we present the first study on the...
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ftdoajarticles:oai:doaj.org/article:f630d7b3bd124a20b71d39086247013e 2023-05-15T17:03:52+02:00 Effects of individual pre-fledging traits and environmental conditions on return patterns in juvenile king penguins. Claire Saraux Vincent A Viblanc Nicolas Hanuise Yvon Le Maho Céline Le Bohec 2011-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0020407 https://doaj.org/article/f630d7b3bd124a20b71d39086247013e EN eng Public Library of Science (PLoS) https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21687715/pdf/?tool=EBI https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0020407 https://doaj.org/article/f630d7b3bd124a20b71d39086247013e PLoS ONE, Vol 6, Iss 6, p e20407 (2011) Medicine R Science Q article 2011 ftdoajarticles https://doi.org/10.1371/journal.pone.0020407 2022-12-31T05:06:57Z Despite the importance of early life stages in individuals' life history and population dynamics, very few studies have focused on the constraints to which these juvenile traits are subjected. Based on 10 years of automatic monitoring of over 2500 individuals, we present the first study on the effects of environmental conditions and individual pre-fledging traits on the post-fledging return of non-banded king penguins to their natal colony. Juvenile king penguins returned exclusively within one of the three austral summers following their departure. A key finding is that return rates (range 68-87%) were much higher than previously assumed for this species, importantly meaning that juvenile survival is very close to that of adults. Such high figures suggest little juvenile dispersal, and selection occurring mostly prior to fledging in king penguins. Pre-fledging conditions had a strong quadratic impact on juvenile return rates. As expected, cohorts reared under very unfavourable years (as inferred by the breeding success of the colony) exhibited low return rates but surprisingly, so did those fledged under very favourable conditions. Juvenile sojourns away from the colony were shorter under warm conditions and subsequent return rates higher, suggesting a positive effect of climate warming. The longer the post-fledging trip (1, 2 or 3 years), the earlier in the summer birds returned to their natal colony and the longer they stayed before leaving for the winter journey. The presence of juveniles in the colony was more than twice the duration required for moulting purposes, yet none attempted breeding in the year of their first return. Juvenile presence in the colony may be important for acquiring knowledge on the social and physical colonial environment and may play an important part in the learning process of mating behaviour. Further studies are required to investigate its potential implications on other life-history traits such as recruitment age. Article in Journal/Newspaper King Penguins Directory of Open Access Journals: DOAJ Articles Austral PLoS ONE 6 6 e20407 |
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topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Claire Saraux Vincent A Viblanc Nicolas Hanuise Yvon Le Maho Céline Le Bohec Effects of individual pre-fledging traits and environmental conditions on return patterns in juvenile king penguins. |
topic_facet |
Medicine R Science Q |
description |
Despite the importance of early life stages in individuals' life history and population dynamics, very few studies have focused on the constraints to which these juvenile traits are subjected. Based on 10 years of automatic monitoring of over 2500 individuals, we present the first study on the effects of environmental conditions and individual pre-fledging traits on the post-fledging return of non-banded king penguins to their natal colony. Juvenile king penguins returned exclusively within one of the three austral summers following their departure. A key finding is that return rates (range 68-87%) were much higher than previously assumed for this species, importantly meaning that juvenile survival is very close to that of adults. Such high figures suggest little juvenile dispersal, and selection occurring mostly prior to fledging in king penguins. Pre-fledging conditions had a strong quadratic impact on juvenile return rates. As expected, cohorts reared under very unfavourable years (as inferred by the breeding success of the colony) exhibited low return rates but surprisingly, so did those fledged under very favourable conditions. Juvenile sojourns away from the colony were shorter under warm conditions and subsequent return rates higher, suggesting a positive effect of climate warming. The longer the post-fledging trip (1, 2 or 3 years), the earlier in the summer birds returned to their natal colony and the longer they stayed before leaving for the winter journey. The presence of juveniles in the colony was more than twice the duration required for moulting purposes, yet none attempted breeding in the year of their first return. Juvenile presence in the colony may be important for acquiring knowledge on the social and physical colonial environment and may play an important part in the learning process of mating behaviour. Further studies are required to investigate its potential implications on other life-history traits such as recruitment age. |
format |
Article in Journal/Newspaper |
author |
Claire Saraux Vincent A Viblanc Nicolas Hanuise Yvon Le Maho Céline Le Bohec |
author_facet |
Claire Saraux Vincent A Viblanc Nicolas Hanuise Yvon Le Maho Céline Le Bohec |
author_sort |
Claire Saraux |
title |
Effects of individual pre-fledging traits and environmental conditions on return patterns in juvenile king penguins. |
title_short |
Effects of individual pre-fledging traits and environmental conditions on return patterns in juvenile king penguins. |
title_full |
Effects of individual pre-fledging traits and environmental conditions on return patterns in juvenile king penguins. |
title_fullStr |
Effects of individual pre-fledging traits and environmental conditions on return patterns in juvenile king penguins. |
title_full_unstemmed |
Effects of individual pre-fledging traits and environmental conditions on return patterns in juvenile king penguins. |
title_sort |
effects of individual pre-fledging traits and environmental conditions on return patterns in juvenile king penguins. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2011 |
url |
https://doi.org/10.1371/journal.pone.0020407 https://doaj.org/article/f630d7b3bd124a20b71d39086247013e |
geographic |
Austral |
geographic_facet |
Austral |
genre |
King Penguins |
genre_facet |
King Penguins |
op_source |
PLoS ONE, Vol 6, Iss 6, p e20407 (2011) |
op_relation |
https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21687715/pdf/?tool=EBI https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0020407 https://doaj.org/article/f630d7b3bd124a20b71d39086247013e |
op_doi |
https://doi.org/10.1371/journal.pone.0020407 |
container_title |
PLoS ONE |
container_volume |
6 |
container_issue |
6 |
container_start_page |
e20407 |
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