Data from: Body condition influences ontogeny of foraging behavior in juvenile southern elephant seals
1. Ontogeny of diving and foraging behaviour in marine top predators is poorly understood despite its importance in population recruitment. This lack of knowledge is partly due to the difficulties of monitoring juveniles in the wild, which is linked to high mortality early in life. 2. Pinnipeds are...
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Data Archiving and Networked Services (DANS)
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Online Access: | https://doi.org/10.5061/dryad.qq6mb07 |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::98fe113e0a7745a47363c90600e613f6 2023-05-15T16:05:23+02:00 Data from: Body condition influences ontogeny of foraging behavior in juvenile southern elephant seals Orgeret, Florian Cox, Sam L. Weimerskirch, Henri Guinet, Christophe 2019-11-01 https://doi.org/10.5061/dryad.qq6mb07 undefined unknown Data Archiving and Networked Services (DANS) http://dx.doi.org/10.5061/dryad.qq6mb07 https://dx.doi.org/10.5061/dryad.qq6mb07 lic_creative-commons oai:easy.dans.knaw.nl:easy-dataset:119109 10.5061/dryad.qq6mb07 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:119109 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c Life sciences medicine and health care 2015 ontogeny diving behaviour Mirouanga leonina envir psy Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2019 fttriple https://doi.org/10.5061/dryad.qq6mb07 2023-01-22T17:23:20Z 1. Ontogeny of diving and foraging behaviour in marine top predators is poorly understood despite its importance in population recruitment. This lack of knowledge is partly due to the difficulties of monitoring juveniles in the wild, which is linked to high mortality early in life. 2. Pinnipeds are good models for studying the development of foraging behaviours because juveniles are large enough to robustly carry tracking devices for many months. Moreover, parental assistance is absent after a juvenile departs for its first foraging trip, minimising confounding effects of parental input on the development of foraging skills. 3. In this study, we tracked 20 newly-weaned juvenile southern elephant seals from Kerguelen Islands for up to 338 days during their first trip at sea following weaning. We used a new generation of satellite relay tags, which allow for the transmission of dive, accelerometer and location data. We also monitored, at the same time, nine adult females from the colony during their post-breeding trips, in order to compare diving and foraging behaviours. 4. Juveniles showed a gradual improvement through time in their foraging skills. Like adults females, they remarkably adjusted their swimming effort according to temporal changes in buoyancy (i.e. a proxy of their body condition). They also did not appear to exceed their aerobic physiological diving limits, although dives were constrained by their smaller size compared to adults. Changes in buoyancy appeared to also influence their decision to either keep foraging or return to land, alongside the duration of their haul outs and choice of foraging habitat (oceanic vs plateau). 5. Further studies are thus needed to better understand how patterns in juveniles survival, and therefore elephant seal populations, might be affected by their changes in foraging skills and changes in their environmental conditions. juvs_ses_data_for_e&eJuveniles and Post-breeding Adults southern elephant seals diving parameters by days Dataset Elephant Seal Elephant Seals Kerguelen Islands Southern Elephant Seals Unknown Kerguelen Kerguelen Islands |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
unknown |
topic |
Life sciences medicine and health care 2015 ontogeny diving behaviour Mirouanga leonina envir psy |
spellingShingle |
Life sciences medicine and health care 2015 ontogeny diving behaviour Mirouanga leonina envir psy Orgeret, Florian Cox, Sam L. Weimerskirch, Henri Guinet, Christophe Data from: Body condition influences ontogeny of foraging behavior in juvenile southern elephant seals |
topic_facet |
Life sciences medicine and health care 2015 ontogeny diving behaviour Mirouanga leonina envir psy |
description |
1. Ontogeny of diving and foraging behaviour in marine top predators is poorly understood despite its importance in population recruitment. This lack of knowledge is partly due to the difficulties of monitoring juveniles in the wild, which is linked to high mortality early in life. 2. Pinnipeds are good models for studying the development of foraging behaviours because juveniles are large enough to robustly carry tracking devices for many months. Moreover, parental assistance is absent after a juvenile departs for its first foraging trip, minimising confounding effects of parental input on the development of foraging skills. 3. In this study, we tracked 20 newly-weaned juvenile southern elephant seals from Kerguelen Islands for up to 338 days during their first trip at sea following weaning. We used a new generation of satellite relay tags, which allow for the transmission of dive, accelerometer and location data. We also monitored, at the same time, nine adult females from the colony during their post-breeding trips, in order to compare diving and foraging behaviours. 4. Juveniles showed a gradual improvement through time in their foraging skills. Like adults females, they remarkably adjusted their swimming effort according to temporal changes in buoyancy (i.e. a proxy of their body condition). They also did not appear to exceed their aerobic physiological diving limits, although dives were constrained by their smaller size compared to adults. Changes in buoyancy appeared to also influence their decision to either keep foraging or return to land, alongside the duration of their haul outs and choice of foraging habitat (oceanic vs plateau). 5. Further studies are thus needed to better understand how patterns in juveniles survival, and therefore elephant seal populations, might be affected by their changes in foraging skills and changes in their environmental conditions. juvs_ses_data_for_e&eJuveniles and Post-breeding Adults southern elephant seals diving parameters by days |
format |
Dataset |
author |
Orgeret, Florian Cox, Sam L. Weimerskirch, Henri Guinet, Christophe |
author_facet |
Orgeret, Florian Cox, Sam L. Weimerskirch, Henri Guinet, Christophe |
author_sort |
Orgeret, Florian |
title |
Data from: Body condition influences ontogeny of foraging behavior in juvenile southern elephant seals |
title_short |
Data from: Body condition influences ontogeny of foraging behavior in juvenile southern elephant seals |
title_full |
Data from: Body condition influences ontogeny of foraging behavior in juvenile southern elephant seals |
title_fullStr |
Data from: Body condition influences ontogeny of foraging behavior in juvenile southern elephant seals |
title_full_unstemmed |
Data from: Body condition influences ontogeny of foraging behavior in juvenile southern elephant seals |
title_sort |
data from: body condition influences ontogeny of foraging behavior in juvenile southern elephant seals |
publisher |
Data Archiving and Networked Services (DANS) |
publishDate |
2019 |
url |
https://doi.org/10.5061/dryad.qq6mb07 |
geographic |
Kerguelen Kerguelen Islands |
geographic_facet |
Kerguelen Kerguelen Islands |
genre |
Elephant Seal Elephant Seals Kerguelen Islands Southern Elephant Seals |
genre_facet |
Elephant Seal Elephant Seals Kerguelen Islands Southern Elephant Seals |
op_source |
oai:easy.dans.knaw.nl:easy-dataset:119109 10.5061/dryad.qq6mb07 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:119109 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c |
op_relation |
http://dx.doi.org/10.5061/dryad.qq6mb07 https://dx.doi.org/10.5061/dryad.qq6mb07 |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.qq6mb07 |
_version_ |
1766401288518500352 |