Exploration during early life: distribution, habitat and orientation preferences in juvenile king penguins
BACKGROUND: The early life of marine apex predators is poorly known, particularly for diving species. The orientation and foraging skills are presumably less developed in juveniles than in adults, especially during their first year at sea when juveniles might disperse further than adults. METHODS: O...
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ftpubmed:oai:pubmedcentral.nih.gov:6805568 2023-05-15T13:38:32+02:00 Exploration during early life: distribution, habitat and orientation preferences in juvenile king penguins Orgeret, F. Péron, C. Enstipp, M. R. Delord, K. Weimerskirch, H. Bost, C. A. 2019-10-21 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6805568/ http://www.ncbi.nlm.nih.gov/pubmed/31660153 https://doi.org/10.1186/s40462-019-0175-3 en eng BioMed Central http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6805568/ http://www.ncbi.nlm.nih.gov/pubmed/31660153 http://dx.doi.org/10.1186/s40462-019-0175-3 © The Author(s). 2019 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. CC0 PDM CC-BY Research Text 2019 ftpubmed https://doi.org/10.1186/s40462-019-0175-3 2019-11-03T01:52:34Z BACKGROUND: The early life of marine apex predators is poorly known, particularly for diving species. The orientation and foraging skills are presumably less developed in juveniles than in adults, especially during their first year at sea when juveniles might disperse further than adults. METHODS: Over two years of monitoring, we tracked the movements of 17 juvenile king penguins (Aptenodytes patagonicus, ~ 1 year old) using satellite relay tags from Crozet Archipelago (Southern Indian Ocean), starting when birds left their natal colony for the first time. For comparison we also tagged 6 non-breeding adults, which at that stage, similar to juveniles, are unhampered by reproductive constraints and might roam further than breeders. We used a combination of cluster analysis and habitat modelling to investigate and compare the movement patterns and habitat use of experienced (non-breeding adults) and non-experienced (juveniles) individuals. RESULTS: While juvenile penguins and non-breeding adults followed similar routes, the movements by adults started later in the season and ranged over a considerably smaller area than juveniles. Net squared displacement analysis revealed that both groups did not move to a specific wintering area. Changes in direction of juveniles in respect to their departure island were similar and synchronous for both years. Habitat models revealed that foraging behaviour was affected by environmental variables such as wind or current speeds, sea surface temperature, or oceanic productivity, for both stages. Analysis of tracks revealed that birds moved predominately perpendicular or against the main direction of the Antarctic Circumpolar Current and the prevailing wind during austral summer (juveniles only) and autumn (juveniles and non-breeding adults). However, both juveniles and adults were more likely to move against the prevailing winds if productivity increased along their trajectories. CONCLUSIONS: The exceptional duration of our tracking study provided unprecedented insights into the ... Text Antarc* Antarctic King Penguins PubMed Central (PMC) Antarctic Austral Indian The Antarctic Movement Ecology 7 1 |
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Research Orgeret, F. Péron, C. Enstipp, M. R. Delord, K. Weimerskirch, H. Bost, C. A. Exploration during early life: distribution, habitat and orientation preferences in juvenile king penguins |
topic_facet |
Research |
description |
BACKGROUND: The early life of marine apex predators is poorly known, particularly for diving species. The orientation and foraging skills are presumably less developed in juveniles than in adults, especially during their first year at sea when juveniles might disperse further than adults. METHODS: Over two years of monitoring, we tracked the movements of 17 juvenile king penguins (Aptenodytes patagonicus, ~ 1 year old) using satellite relay tags from Crozet Archipelago (Southern Indian Ocean), starting when birds left their natal colony for the first time. For comparison we also tagged 6 non-breeding adults, which at that stage, similar to juveniles, are unhampered by reproductive constraints and might roam further than breeders. We used a combination of cluster analysis and habitat modelling to investigate and compare the movement patterns and habitat use of experienced (non-breeding adults) and non-experienced (juveniles) individuals. RESULTS: While juvenile penguins and non-breeding adults followed similar routes, the movements by adults started later in the season and ranged over a considerably smaller area than juveniles. Net squared displacement analysis revealed that both groups did not move to a specific wintering area. Changes in direction of juveniles in respect to their departure island were similar and synchronous for both years. Habitat models revealed that foraging behaviour was affected by environmental variables such as wind or current speeds, sea surface temperature, or oceanic productivity, for both stages. Analysis of tracks revealed that birds moved predominately perpendicular or against the main direction of the Antarctic Circumpolar Current and the prevailing wind during austral summer (juveniles only) and autumn (juveniles and non-breeding adults). However, both juveniles and adults were more likely to move against the prevailing winds if productivity increased along their trajectories. CONCLUSIONS: The exceptional duration of our tracking study provided unprecedented insights into the ... |
format |
Text |
author |
Orgeret, F. Péron, C. Enstipp, M. R. Delord, K. Weimerskirch, H. Bost, C. A. |
author_facet |
Orgeret, F. Péron, C. Enstipp, M. R. Delord, K. Weimerskirch, H. Bost, C. A. |
author_sort |
Orgeret, F. |
title |
Exploration during early life: distribution, habitat and orientation preferences in juvenile king penguins |
title_short |
Exploration during early life: distribution, habitat and orientation preferences in juvenile king penguins |
title_full |
Exploration during early life: distribution, habitat and orientation preferences in juvenile king penguins |
title_fullStr |
Exploration during early life: distribution, habitat and orientation preferences in juvenile king penguins |
title_full_unstemmed |
Exploration during early life: distribution, habitat and orientation preferences in juvenile king penguins |
title_sort |
exploration during early life: distribution, habitat and orientation preferences in juvenile king penguins |
publisher |
BioMed Central |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6805568/ http://www.ncbi.nlm.nih.gov/pubmed/31660153 https://doi.org/10.1186/s40462-019-0175-3 |
geographic |
Antarctic Austral Indian The Antarctic |
geographic_facet |
Antarctic Austral Indian The Antarctic |
genre |
Antarc* Antarctic King Penguins |
genre_facet |
Antarc* Antarctic King Penguins |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6805568/ http://www.ncbi.nlm.nih.gov/pubmed/31660153 http://dx.doi.org/10.1186/s40462-019-0175-3 |
op_rights |
© The Author(s). 2019 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. |
op_rightsnorm |
CC0 PDM CC-BY |
op_doi |
https://doi.org/10.1186/s40462-019-0175-3 |
container_title |
Movement Ecology |
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7 |
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1 |
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1766107633431871488 |