Exploration during early life: distribution, habitat and orientation preferences in juvenile king penguins
Abstract 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. Me...
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ftdoajarticles:oai:doaj.org/article:ad5555eb434943919b839933c68b3e20 2023-05-15T13:59:12+02:00 Exploration during early life: distribution, habitat and orientation preferences in juvenile king penguins F. Orgeret C. Péron M. R. Enstipp K. Delord H. Weimerskirch C. A. Bost 2019-10-01T00:00:00Z https://doi.org/10.1186/s40462-019-0175-3 https://doaj.org/article/ad5555eb434943919b839933c68b3e20 EN eng BMC http://link.springer.com/article/10.1186/s40462-019-0175-3 https://doaj.org/toc/2051-3933 doi:10.1186/s40462-019-0175-3 2051-3933 https://doaj.org/article/ad5555eb434943919b839933c68b3e20 Movement Ecology, Vol 7, Iss 1, Pp 1-17 (2019) King penguins First year at-sea Juveniles Distribution Ocean current Wind Biology (General) QH301-705.5 article 2019 ftdoajarticles https://doi.org/10.1186/s40462-019-0175-3 2022-12-31T03:02:50Z Abstract 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 ... Article in Journal/Newspaper Antarc* Antarctic King Penguins Directory of Open Access Journals: DOAJ Articles Antarctic Austral Indian The Antarctic Movement Ecology 7 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
King penguins First year at-sea Juveniles Distribution Ocean current Wind Biology (General) QH301-705.5 |
spellingShingle |
King penguins First year at-sea Juveniles Distribution Ocean current Wind Biology (General) QH301-705.5 F. Orgeret C. Péron M. R. Enstipp K. Delord H. Weimerskirch C. A. Bost Exploration during early life: distribution, habitat and orientation preferences in juvenile king penguins |
topic_facet |
King penguins First year at-sea Juveniles Distribution Ocean current Wind Biology (General) QH301-705.5 |
description |
Abstract 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 ... |
format |
Article in Journal/Newspaper |
author |
F. Orgeret C. Péron M. R. Enstipp K. Delord H. Weimerskirch C. A. Bost |
author_facet |
F. Orgeret C. Péron M. R. Enstipp K. Delord H. Weimerskirch C. A. Bost |
author_sort |
F. Orgeret |
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 |
BMC |
publishDate |
2019 |
url |
https://doi.org/10.1186/s40462-019-0175-3 https://doaj.org/article/ad5555eb434943919b839933c68b3e20 |
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_source |
Movement Ecology, Vol 7, Iss 1, Pp 1-17 (2019) |
op_relation |
http://link.springer.com/article/10.1186/s40462-019-0175-3 https://doaj.org/toc/2051-3933 doi:10.1186/s40462-019-0175-3 2051-3933 https://doaj.org/article/ad5555eb434943919b839933c68b3e20 |
op_doi |
https://doi.org/10.1186/s40462-019-0175-3 |
container_title |
Movement Ecology |
container_volume |
7 |
container_issue |
1 |
_version_ |
1766267664371548160 |