Lightscapes of fear: How mesopredators balance starvation and predation in the open ocean
Like landscapes of fear, animals are hypothesized to strategically use lightscapes based on intrinsic motivations. However, longitudinal evidence of state-dependent risk aversion has been difficult to obtain in wild animals. Using high-resolution biologgers, we continuously measured body condition,...
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ftpubmed:oai:pubmedcentral.nih.gov:7968837 2023-05-15T16:05:41+02:00 Lightscapes of fear: How mesopredators balance starvation and predation in the open ocean Beltran, Roxanne S. Kendall-Bar, Jessica M. Pirotta, Enrico Adachi, Taiki Naito, Yasuhiko Takahashi, Akinori Cremers, Jolien Robinson, Patrick W. Crocker, Daniel E. Costa, Daniel P. 2021-03-17 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7968837/ http://www.ncbi.nlm.nih.gov/pubmed/33731347 https://doi.org/10.1126/sciadv.abd9818 en eng American Association for the Advancement of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7968837/ http://www.ncbi.nlm.nih.gov/pubmed/33731347 http://dx.doi.org/10.1126/sciadv.abd9818 Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). https://creativecommons.org/licenses/by-nc/4.0/ https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. CC-BY-NC Sci Adv Research Articles Text 2021 ftpubmed https://doi.org/10.1126/sciadv.abd9818 2021-04-04T00:42:36Z Like landscapes of fear, animals are hypothesized to strategically use lightscapes based on intrinsic motivations. However, longitudinal evidence of state-dependent risk aversion has been difficult to obtain in wild animals. Using high-resolution biologgers, we continuously measured body condition, time partitioning, three-dimensional movement, and risk exposure of 71 elephant seals throughout their 7-month foraging migrations (N = 16,000 seal days). As body condition improved from 21 to 32% fat and daylength declined from 16 to 10 hours, seals rested progressively earlier with respect to sunrise, sacrificing valuable nocturnal foraging hours to rest in the safety of darkness. Seals in superior body condition prioritized safety over energy conservation by resting >100 meters deeper where it was 300× darker. Together, these results provide empirical evidence that marine mammals actively use the three-dimensional lightscape to optimize risk-reward trade-offs based on ecological and physiological factors. Text Elephant Seals PubMed Central (PMC) Science Advances 7 12 eabd9818 |
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Research Articles |
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Research Articles Beltran, Roxanne S. Kendall-Bar, Jessica M. Pirotta, Enrico Adachi, Taiki Naito, Yasuhiko Takahashi, Akinori Cremers, Jolien Robinson, Patrick W. Crocker, Daniel E. Costa, Daniel P. Lightscapes of fear: How mesopredators balance starvation and predation in the open ocean |
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Research Articles |
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Like landscapes of fear, animals are hypothesized to strategically use lightscapes based on intrinsic motivations. However, longitudinal evidence of state-dependent risk aversion has been difficult to obtain in wild animals. Using high-resolution biologgers, we continuously measured body condition, time partitioning, three-dimensional movement, and risk exposure of 71 elephant seals throughout their 7-month foraging migrations (N = 16,000 seal days). As body condition improved from 21 to 32% fat and daylength declined from 16 to 10 hours, seals rested progressively earlier with respect to sunrise, sacrificing valuable nocturnal foraging hours to rest in the safety of darkness. Seals in superior body condition prioritized safety over energy conservation by resting >100 meters deeper where it was 300× darker. Together, these results provide empirical evidence that marine mammals actively use the three-dimensional lightscape to optimize risk-reward trade-offs based on ecological and physiological factors. |
format |
Text |
author |
Beltran, Roxanne S. Kendall-Bar, Jessica M. Pirotta, Enrico Adachi, Taiki Naito, Yasuhiko Takahashi, Akinori Cremers, Jolien Robinson, Patrick W. Crocker, Daniel E. Costa, Daniel P. |
author_facet |
Beltran, Roxanne S. Kendall-Bar, Jessica M. Pirotta, Enrico Adachi, Taiki Naito, Yasuhiko Takahashi, Akinori Cremers, Jolien Robinson, Patrick W. Crocker, Daniel E. Costa, Daniel P. |
author_sort |
Beltran, Roxanne S. |
title |
Lightscapes of fear: How mesopredators balance starvation and predation in the open ocean |
title_short |
Lightscapes of fear: How mesopredators balance starvation and predation in the open ocean |
title_full |
Lightscapes of fear: How mesopredators balance starvation and predation in the open ocean |
title_fullStr |
Lightscapes of fear: How mesopredators balance starvation and predation in the open ocean |
title_full_unstemmed |
Lightscapes of fear: How mesopredators balance starvation and predation in the open ocean |
title_sort |
lightscapes of fear: how mesopredators balance starvation and predation in the open ocean |
publisher |
American Association for the Advancement of Science |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7968837/ http://www.ncbi.nlm.nih.gov/pubmed/33731347 https://doi.org/10.1126/sciadv.abd9818 |
genre |
Elephant Seals |
genre_facet |
Elephant Seals |
op_source |
Sci Adv |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7968837/ http://www.ncbi.nlm.nih.gov/pubmed/33731347 http://dx.doi.org/10.1126/sciadv.abd9818 |
op_rights |
Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). https://creativecommons.org/licenses/by-nc/4.0/ https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
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CC-BY-NC |
op_doi |
https://doi.org/10.1126/sciadv.abd9818 |
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Science Advances |
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7 |
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12 |
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