Data from: Bottom time does not always predict prey encounter rate in Antarctic fur seals ...
Abstract Optimal foraging models applied to breath-holding divers predict that diving predators should optimize the time spent foraging at the bottom of dives depending on prey encounter rate, distance to prey patch (depth) and physiological constraints. We tested this hypothesis on a free-ranging d...
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2020
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ftdatacite:10.14288/1.0397606 2024-04-28T07:56:19+00:00 Data from: Bottom time does not always predict prey encounter rate in Antarctic fur seals ... Viviant, Morgane Jeanniard-Du-Dot, Tiphaine Monestiez, Pascal Authier, Matthieu Guinet, Christophe Jeanniard Dudot, Tiphaine 2020 https://dx.doi.org/10.14288/1.0397606 https://doi.library.ubc.ca/10.14288/1.0397606 unknown The University of British Columbia https://dx.doi.org/10.5683/sp2/aktjfv https://dx.doi.org/10.5061/dryad.ct511 dataset Dataset 2020 ftdatacite https://doi.org/10.14288/1.039760610.5683/sp2/aktjfv10.5061/dryad.ct511 2024-04-02T09:41:15Z Abstract Optimal foraging models applied to breath-holding divers predict that diving predators should optimize the time spent foraging at the bottom of dives depending on prey encounter rate, distance to prey patch (depth) and physiological constraints. We tested this hypothesis on a free-ranging diving marine predator, the Antarctic fur seal Arctocephalus gazella, equipped with accelerometers or Hall sensors (n = 11) that recorded mouth-opening events, a proxy for prey capture attempts and thus feeding events. Over the 5896 dives analysed (>15 m depth), the mean number of mouth-opening events per dive was 1·21 ± 1·69 (mean ± SD). Overall, 82% of mouth-openings occurred at the bottom of dives. As predicted, fur seals increased their inferred foraging time at the bottom of dives with increasing patch distance (depth), irrespective of the number of mouth-openings. For dives shallower than 55 m, the mean bottom duration of dives without mouth-openings was shorter than for dives with mouth-opening events. ... Dataset Antarc* Antarctic Antarctic Fur Seal Antarctic Fur Seals Arctocephalus gazella DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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Abstract Optimal foraging models applied to breath-holding divers predict that diving predators should optimize the time spent foraging at the bottom of dives depending on prey encounter rate, distance to prey patch (depth) and physiological constraints. We tested this hypothesis on a free-ranging diving marine predator, the Antarctic fur seal Arctocephalus gazella, equipped with accelerometers or Hall sensors (n = 11) that recorded mouth-opening events, a proxy for prey capture attempts and thus feeding events. Over the 5896 dives analysed (>15 m depth), the mean number of mouth-opening events per dive was 1·21 ± 1·69 (mean ± SD). Overall, 82% of mouth-openings occurred at the bottom of dives. As predicted, fur seals increased their inferred foraging time at the bottom of dives with increasing patch distance (depth), irrespective of the number of mouth-openings. For dives shallower than 55 m, the mean bottom duration of dives without mouth-openings was shorter than for dives with mouth-opening events. ... |
format |
Dataset |
author |
Viviant, Morgane Jeanniard-Du-Dot, Tiphaine Monestiez, Pascal Authier, Matthieu Guinet, Christophe Jeanniard Dudot, Tiphaine |
spellingShingle |
Viviant, Morgane Jeanniard-Du-Dot, Tiphaine Monestiez, Pascal Authier, Matthieu Guinet, Christophe Jeanniard Dudot, Tiphaine Data from: Bottom time does not always predict prey encounter rate in Antarctic fur seals ... |
author_facet |
Viviant, Morgane Jeanniard-Du-Dot, Tiphaine Monestiez, Pascal Authier, Matthieu Guinet, Christophe Jeanniard Dudot, Tiphaine |
author_sort |
Viviant, Morgane |
title |
Data from: Bottom time does not always predict prey encounter rate in Antarctic fur seals ... |
title_short |
Data from: Bottom time does not always predict prey encounter rate in Antarctic fur seals ... |
title_full |
Data from: Bottom time does not always predict prey encounter rate in Antarctic fur seals ... |
title_fullStr |
Data from: Bottom time does not always predict prey encounter rate in Antarctic fur seals ... |
title_full_unstemmed |
Data from: Bottom time does not always predict prey encounter rate in Antarctic fur seals ... |
title_sort |
data from: bottom time does not always predict prey encounter rate in antarctic fur seals ... |
publisher |
The University of British Columbia |
publishDate |
2020 |
url |
https://dx.doi.org/10.14288/1.0397606 https://doi.library.ubc.ca/10.14288/1.0397606 |
genre |
Antarc* Antarctic Antarctic Fur Seal Antarctic Fur Seals Arctocephalus gazella |
genre_facet |
Antarc* Antarctic Antarctic Fur Seal Antarctic Fur Seals Arctocephalus gazella |
op_relation |
https://dx.doi.org/10.5683/sp2/aktjfv https://dx.doi.org/10.5061/dryad.ct511 |
op_doi |
https://doi.org/10.14288/1.039760610.5683/sp2/aktjfv10.5061/dryad.ct511 |
_version_ |
1797582894974107648 |