Data from: Reproductive success is energetically linked to foraging efficiency in Antarctic fur seals
The efficiency with which individuals extract energy from their environment defines their survival and reproductive success, and thus their selective contribution to the population. Individuals that forage more efficiently (i.e., when energy gained exceeds energy expended) are likely to be more succ...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:101538 2023-07-02T03:29:38+02:00 Data from: Reproductive success is energetically linked to foraging efficiency in Antarctic fur seals Jeanniard-du-Dot, Tiphaine Trites, Andrew W. Arnould, John P.Y. Guinet, Christophe 2017-05-02T20:21:48.000+02:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-hs-08i6 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:101538 unknown doi:10.5061/dryad.269qr/1 doi:10.5061/dryad.269qr/2 doi:10.5061/dryad.269qr/3 doi:10.5061/dryad.269qr/4 doi:10.1371/journal.pone.0174001 http://nbn-resolving.org/urn:nbn:nl:ui:13-hs-08i6 doi:10.5061/dryad.269qr https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:101538 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Life sciences medicine and health care 2017 ftdans https://doi.org/10.5061/dryad.269qr/110.5061/dryad.269qr/210.5061/dryad.269qr/310.5061/dryad.269qr/410.1371/journal.pone.017400110.5061/dryad.269qr 2023-06-13T13:27:27Z The efficiency with which individuals extract energy from their environment defines their survival and reproductive success, and thus their selective contribution to the population. Individuals that forage more efficiently (i.e., when energy gained exceeds energy expended) are likely to be more successful at raising viable offspring than individuals that forage less efficiently. Our goal was to test this prediction in large long-lived mammals under free-ranging conditions. To do so, we equipped 20 lactating Antarctic fur seals (Arctocephalus gazella) breeding on the Kerguelen Island in the Southern Ocean with tags that recorded GPS locations, depth and tri-axial acceleration to determine at-sea behaviours and detailed time-activity budgets during their foraging trips. We also simultaneously measured energy spent at sea using the doubly-labeled water (DLW) method, and estimated the energy acquired while foraging from 1) type and energy content of prey species present in scat remains, and 2) numbers of prey capture attempts determined from head acceleration. Finally, we followed the growth of 36 pups from birth until weaning (of which 20 were the offspring of our 20 tracked mothers), and used the relative differences in body mass of pups at weaning as an index of first year survival and thus the reproductive success of their mothers. Our results show that females with greater foraging efficiencies produced relatively bigger pups at weaning. These mothers achieved greater foraging efficiency by extracting more energy per minute of diving rather than by reducing energy expenditure. This strategy also resulted in the females spending less time diving and less time overall at sea, which allowed them to deliver higher quality milk to their pups, or allowed their pups to suckle more frequently, or both. The linkage we demonstrate between reproductive success and the quality of individuals as foragers provides an individual-based quantitative framework to investigate how changes in the availability and accessibility of ... Other/Unknown Material Antarc* Antarctic Antarctic Fur Seals Arctocephalus gazella Southern Ocean Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) Antarctic Kerguelen Kerguelen Island ENVELOPE(69.500,69.500,-49.250,-49.250) Southern Ocean |
institution |
Open Polar |
collection |
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
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ftdans |
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Life sciences medicine and health care |
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Life sciences medicine and health care Jeanniard-du-Dot, Tiphaine Trites, Andrew W. Arnould, John P.Y. Guinet, Christophe Data from: Reproductive success is energetically linked to foraging efficiency in Antarctic fur seals |
topic_facet |
Life sciences medicine and health care |
description |
The efficiency with which individuals extract energy from their environment defines their survival and reproductive success, and thus their selective contribution to the population. Individuals that forage more efficiently (i.e., when energy gained exceeds energy expended) are likely to be more successful at raising viable offspring than individuals that forage less efficiently. Our goal was to test this prediction in large long-lived mammals under free-ranging conditions. To do so, we equipped 20 lactating Antarctic fur seals (Arctocephalus gazella) breeding on the Kerguelen Island in the Southern Ocean with tags that recorded GPS locations, depth and tri-axial acceleration to determine at-sea behaviours and detailed time-activity budgets during their foraging trips. We also simultaneously measured energy spent at sea using the doubly-labeled water (DLW) method, and estimated the energy acquired while foraging from 1) type and energy content of prey species present in scat remains, and 2) numbers of prey capture attempts determined from head acceleration. Finally, we followed the growth of 36 pups from birth until weaning (of which 20 were the offspring of our 20 tracked mothers), and used the relative differences in body mass of pups at weaning as an index of first year survival and thus the reproductive success of their mothers. Our results show that females with greater foraging efficiencies produced relatively bigger pups at weaning. These mothers achieved greater foraging efficiency by extracting more energy per minute of diving rather than by reducing energy expenditure. This strategy also resulted in the females spending less time diving and less time overall at sea, which allowed them to deliver higher quality milk to their pups, or allowed their pups to suckle more frequently, or both. The linkage we demonstrate between reproductive success and the quality of individuals as foragers provides an individual-based quantitative framework to investigate how changes in the availability and accessibility of ... |
author |
Jeanniard-du-Dot, Tiphaine Trites, Andrew W. Arnould, John P.Y. Guinet, Christophe |
author_facet |
Jeanniard-du-Dot, Tiphaine Trites, Andrew W. Arnould, John P.Y. Guinet, Christophe |
author_sort |
Jeanniard-du-Dot, Tiphaine |
title |
Data from: Reproductive success is energetically linked to foraging efficiency in Antarctic fur seals |
title_short |
Data from: Reproductive success is energetically linked to foraging efficiency in Antarctic fur seals |
title_full |
Data from: Reproductive success is energetically linked to foraging efficiency in Antarctic fur seals |
title_fullStr |
Data from: Reproductive success is energetically linked to foraging efficiency in Antarctic fur seals |
title_full_unstemmed |
Data from: Reproductive success is energetically linked to foraging efficiency in Antarctic fur seals |
title_sort |
data from: reproductive success is energetically linked to foraging efficiency in antarctic fur seals |
publishDate |
2017 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-hs-08i6 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:101538 |
long_lat |
ENVELOPE(69.500,69.500,-49.250,-49.250) |
geographic |
Antarctic Kerguelen Kerguelen Island Southern Ocean |
geographic_facet |
Antarctic Kerguelen Kerguelen Island Southern Ocean |
genre |
Antarc* Antarctic Antarctic Fur Seals Arctocephalus gazella Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Fur Seals Arctocephalus gazella Southern Ocean |
op_relation |
doi:10.5061/dryad.269qr/1 doi:10.5061/dryad.269qr/2 doi:10.5061/dryad.269qr/3 doi:10.5061/dryad.269qr/4 doi:10.1371/journal.pone.0174001 http://nbn-resolving.org/urn:nbn:nl:ui:13-hs-08i6 doi:10.5061/dryad.269qr https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:101538 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf |
op_doi |
https://doi.org/10.5061/dryad.269qr/110.5061/dryad.269qr/210.5061/dryad.269qr/310.5061/dryad.269qr/410.1371/journal.pone.017400110.5061/dryad.269qr |
_version_ |
1770271683302653952 |