Influence of oceanographic structures on foraging strategies: macaroni penguins at Crozet Islands
Background In the open ocean, eddies and associated structures (fronts, filaments) have strong influences on the foraging activities of top-predators through the enhancement and the distribution of marine productivity, zooplankton and fish communities. Investigating how central place foragers, such...
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Online Access: | https://doi.org/10.1186/s40462-015-0057-2 http://www.ncbi.nlm.nih.gov/pubmed/26396739 http://ecite.utas.edu.au/121550 |
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ftunivtasecite:oai:ecite.utas.edu.au:121550 2023-05-15T13:49:03+02:00 Influence of oceanographic structures on foraging strategies: macaroni penguins at Crozet Islands Bon, C Della Penna, A d'Ovidio, F Arnould, JYP Poupart, T Bost, C-A 2015 application/pdf https://doi.org/10.1186/s40462-015-0057-2 http://www.ncbi.nlm.nih.gov/pubmed/26396739 http://ecite.utas.edu.au/121550 en eng BioMed Central Ltd. http://ecite.utas.edu.au/121550/1/Bon et al 2015.pdf http://dx.doi.org/10.1186/s40462-015-0057-2 Bon, C and Della Penna, A and d'Ovidio, F and Arnould, JYP and Poupart, T and Bost, C-A, Influence of oceanographic structures on foraging strategies: macaroni penguins at Crozet Islands, Movement Ecology, 3 Article 32. ISSN 2051-3933 (2015) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/26396739 http://ecite.utas.edu.au/121550 Biological Sciences Zoology Animal Behaviour Refereed Article PeerReviewed 2015 ftunivtasecite https://doi.org/10.1186/s40462-015-0057-2 2019-12-13T22:20:33Z Background In the open ocean, eddies and associated structures (fronts, filaments) have strong influences on the foraging activities of top-predators through the enhancement and the distribution of marine productivity, zooplankton and fish communities. Investigating how central place foragers, such as penguins, find and use these physical structures is crucial to better understanding their at-sea distribution. In the present study, we compared the travel heading and speed of the worlds most abundant penguin, the Macaroni penguin ( Eudyptes chrysolophus ), with the distribution of surface physical structures (large-scale fronts, eddies and filaments). Results The study was performed during December 2012 in the Crozet Archipelago (46.42 S; 51.86 E), South Indian Ocean. Six males at incubation stage were equipped with GPS loggers to get their trajectories. We used Eulerian and Lagrangian methods to locate large-scale fronts, mesoscale eddies (10100km) and part of the sub-mesoscale structures (<10km, filaments) at the surface of the ocean. By comparing the positions of birds and these structures, we show that Macaroni penguins: i) target the sub Antarctic Front; ii) increase their foraging activity within a highly dynamic area, composed of eddy fields and filamentary structures; and iii) travel in the same direction as the predominant currents. Conclusions We show that penguins adjust their travel speed and movement during their whole trips in relation with the oceanographic structures visited. At a large scale, we hypothesize that Macaroni penguins target the sub Antarctic Front to find profitable patches of their main prey. At finer scale, Macaroni penguin may adopt a horizontal drifting behavior in strong currents, which could be a way to minimize costs of displacement. Article in Journal/Newspaper Antarc* Antarctic Crozet Islands Eudyptes chrysolophus Macaroni penguin eCite UTAS (University of Tasmania) Antarctic Indian Movement Ecology 3 1 |
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Open Polar |
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eCite UTAS (University of Tasmania) |
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ftunivtasecite |
language |
English |
topic |
Biological Sciences Zoology Animal Behaviour |
spellingShingle |
Biological Sciences Zoology Animal Behaviour Bon, C Della Penna, A d'Ovidio, F Arnould, JYP Poupart, T Bost, C-A Influence of oceanographic structures on foraging strategies: macaroni penguins at Crozet Islands |
topic_facet |
Biological Sciences Zoology Animal Behaviour |
description |
Background In the open ocean, eddies and associated structures (fronts, filaments) have strong influences on the foraging activities of top-predators through the enhancement and the distribution of marine productivity, zooplankton and fish communities. Investigating how central place foragers, such as penguins, find and use these physical structures is crucial to better understanding their at-sea distribution. In the present study, we compared the travel heading and speed of the worlds most abundant penguin, the Macaroni penguin ( Eudyptes chrysolophus ), with the distribution of surface physical structures (large-scale fronts, eddies and filaments). Results The study was performed during December 2012 in the Crozet Archipelago (46.42 S; 51.86 E), South Indian Ocean. Six males at incubation stage were equipped with GPS loggers to get their trajectories. We used Eulerian and Lagrangian methods to locate large-scale fronts, mesoscale eddies (10100km) and part of the sub-mesoscale structures (<10km, filaments) at the surface of the ocean. By comparing the positions of birds and these structures, we show that Macaroni penguins: i) target the sub Antarctic Front; ii) increase their foraging activity within a highly dynamic area, composed of eddy fields and filamentary structures; and iii) travel in the same direction as the predominant currents. Conclusions We show that penguins adjust their travel speed and movement during their whole trips in relation with the oceanographic structures visited. At a large scale, we hypothesize that Macaroni penguins target the sub Antarctic Front to find profitable patches of their main prey. At finer scale, Macaroni penguin may adopt a horizontal drifting behavior in strong currents, which could be a way to minimize costs of displacement. |
format |
Article in Journal/Newspaper |
author |
Bon, C Della Penna, A d'Ovidio, F Arnould, JYP Poupart, T Bost, C-A |
author_facet |
Bon, C Della Penna, A d'Ovidio, F Arnould, JYP Poupart, T Bost, C-A |
author_sort |
Bon, C |
title |
Influence of oceanographic structures on foraging strategies: macaroni penguins at Crozet Islands |
title_short |
Influence of oceanographic structures on foraging strategies: macaroni penguins at Crozet Islands |
title_full |
Influence of oceanographic structures on foraging strategies: macaroni penguins at Crozet Islands |
title_fullStr |
Influence of oceanographic structures on foraging strategies: macaroni penguins at Crozet Islands |
title_full_unstemmed |
Influence of oceanographic structures on foraging strategies: macaroni penguins at Crozet Islands |
title_sort |
influence of oceanographic structures on foraging strategies: macaroni penguins at crozet islands |
publisher |
BioMed Central Ltd. |
publishDate |
2015 |
url |
https://doi.org/10.1186/s40462-015-0057-2 http://www.ncbi.nlm.nih.gov/pubmed/26396739 http://ecite.utas.edu.au/121550 |
geographic |
Antarctic Indian |
geographic_facet |
Antarctic Indian |
genre |
Antarc* Antarctic Crozet Islands Eudyptes chrysolophus Macaroni penguin |
genre_facet |
Antarc* Antarctic Crozet Islands Eudyptes chrysolophus Macaroni penguin |
op_relation |
http://ecite.utas.edu.au/121550/1/Bon et al 2015.pdf http://dx.doi.org/10.1186/s40462-015-0057-2 Bon, C and Della Penna, A and d'Ovidio, F and Arnould, JYP and Poupart, T and Bost, C-A, Influence of oceanographic structures on foraging strategies: macaroni penguins at Crozet Islands, Movement Ecology, 3 Article 32. ISSN 2051-3933 (2015) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/26396739 http://ecite.utas.edu.au/121550 |
op_doi |
https://doi.org/10.1186/s40462-015-0057-2 |
container_title |
Movement Ecology |
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3 |
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1 |
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1766250732936232960 |