Accelerometers can measure total and activity‐specific energy expenditures in free‐ranging marine mammals only if linked to time‐activity budgets
Summary Energy expenditure is an important component of foraging ecology, but is extremely difficult to estimate in free‐ranging animals and depends on how animals partition their time between different activities during foraging. Acceleration data have emerged as a new way to determine energy expen...
Published in: | Functional Ecology |
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Online Access: | http://dx.doi.org/10.1111/1365-2435.12729 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1365-2435.12729 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2435.12729 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2435.12729 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2435.12729 |
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crwiley:10.1111/1365-2435.12729 2024-06-09T07:40:25+00:00 Accelerometers can measure total and activity‐specific energy expenditures in free‐ranging marine mammals only if linked to time‐activity budgets Jeanniard‐du‐Dot, Tiphaine Guinet, Christophe Arnould, John P.Y. Speakman, John R. Trites, Andrew W. Goldbogen, Jeremy Natural Sciences and Engineering Research Council of Canada National Oceanic and Atmospheric Administration 2016 http://dx.doi.org/10.1111/1365-2435.12729 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1365-2435.12729 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2435.12729 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2435.12729 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2435.12729 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Functional Ecology volume 31, issue 2, page 377-386 ISSN 0269-8463 1365-2435 journal-article 2016 crwiley https://doi.org/10.1111/1365-2435.12729 2024-05-16T14:27:48Z Summary Energy expenditure is an important component of foraging ecology, but is extremely difficult to estimate in free‐ranging animals and depends on how animals partition their time between different activities during foraging. Acceleration data have emerged as a new way to determine energy expenditure at a fine scale but this needs to be tested and validated in wild animals. This study investigated whether vectorial dynamic body acceleration (Ve DBA ) could accurately predict the energy expended by marine predators during a full foraging trip. We also aimed to determine whether the accuracy of predictions of energy expenditure derived from acceleration increased when partitioned by different types of at‐sea activities (i.e. diving, transiting, resting and surface activities). To do so, we equipped 20 lactating northern ( Callorhinus ursinus) and 20 lactating Antarctic fur seals ( Arctocephalus gazella ) with GPS , time‐depth recorders and tri‐axial accelerometers and obtained estimates of field metabolic rates using the doubly labelled water ( DLW ) method. Ve DBA was derived from tri‐axial acceleration, and at‐sea activities (diving, transiting, resting and surface activities) were determined using dive depth, tri‐axial acceleration and travelling speed. We found that Ve DBA did not accurately predict the total energy expended by fur seals during their full foraging trips ( R 2 = 0·36). However, the accuracy of Ve DBA as a predictor of total energy expenditure increased significantly when foraging trips were partitioned by activity and when activity‐specific Ve DBA was paired with time‐activity budgets ( R 2 = 0·70). Activity‐specific Ve DBA also accurately predicted the energy expenditures of each activity independent of each other ( R 2 > 0·85). Our study confirms that acceleration is a promising way to estimate energy expenditures of free‐ranging marine mammals at a fine scale never attained before. However, it shows that it needs to be based on the time‐activity budgets that make up foraging trips ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Fur Seals Arctocephalus gazella Callorhinus ursinus Wiley Online Library Antarctic Functional Ecology 31 2 377 386 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Summary Energy expenditure is an important component of foraging ecology, but is extremely difficult to estimate in free‐ranging animals and depends on how animals partition their time between different activities during foraging. Acceleration data have emerged as a new way to determine energy expenditure at a fine scale but this needs to be tested and validated in wild animals. This study investigated whether vectorial dynamic body acceleration (Ve DBA ) could accurately predict the energy expended by marine predators during a full foraging trip. We also aimed to determine whether the accuracy of predictions of energy expenditure derived from acceleration increased when partitioned by different types of at‐sea activities (i.e. diving, transiting, resting and surface activities). To do so, we equipped 20 lactating northern ( Callorhinus ursinus) and 20 lactating Antarctic fur seals ( Arctocephalus gazella ) with GPS , time‐depth recorders and tri‐axial accelerometers and obtained estimates of field metabolic rates using the doubly labelled water ( DLW ) method. Ve DBA was derived from tri‐axial acceleration, and at‐sea activities (diving, transiting, resting and surface activities) were determined using dive depth, tri‐axial acceleration and travelling speed. We found that Ve DBA did not accurately predict the total energy expended by fur seals during their full foraging trips ( R 2 = 0·36). However, the accuracy of Ve DBA as a predictor of total energy expenditure increased significantly when foraging trips were partitioned by activity and when activity‐specific Ve DBA was paired with time‐activity budgets ( R 2 = 0·70). Activity‐specific Ve DBA also accurately predicted the energy expenditures of each activity independent of each other ( R 2 > 0·85). Our study confirms that acceleration is a promising way to estimate energy expenditures of free‐ranging marine mammals at a fine scale never attained before. However, it shows that it needs to be based on the time‐activity budgets that make up foraging trips ... |
author2 |
Goldbogen, Jeremy Natural Sciences and Engineering Research Council of Canada National Oceanic and Atmospheric Administration |
format |
Article in Journal/Newspaper |
author |
Jeanniard‐du‐Dot, Tiphaine Guinet, Christophe Arnould, John P.Y. Speakman, John R. Trites, Andrew W. |
spellingShingle |
Jeanniard‐du‐Dot, Tiphaine Guinet, Christophe Arnould, John P.Y. Speakman, John R. Trites, Andrew W. Accelerometers can measure total and activity‐specific energy expenditures in free‐ranging marine mammals only if linked to time‐activity budgets |
author_facet |
Jeanniard‐du‐Dot, Tiphaine Guinet, Christophe Arnould, John P.Y. Speakman, John R. Trites, Andrew W. |
author_sort |
Jeanniard‐du‐Dot, Tiphaine |
title |
Accelerometers can measure total and activity‐specific energy expenditures in free‐ranging marine mammals only if linked to time‐activity budgets |
title_short |
Accelerometers can measure total and activity‐specific energy expenditures in free‐ranging marine mammals only if linked to time‐activity budgets |
title_full |
Accelerometers can measure total and activity‐specific energy expenditures in free‐ranging marine mammals only if linked to time‐activity budgets |
title_fullStr |
Accelerometers can measure total and activity‐specific energy expenditures in free‐ranging marine mammals only if linked to time‐activity budgets |
title_full_unstemmed |
Accelerometers can measure total and activity‐specific energy expenditures in free‐ranging marine mammals only if linked to time‐activity budgets |
title_sort |
accelerometers can measure total and activity‐specific energy expenditures in free‐ranging marine mammals only if linked to time‐activity budgets |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1111/1365-2435.12729 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1365-2435.12729 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2435.12729 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2435.12729 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2435.12729 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctic Fur Seals Arctocephalus gazella Callorhinus ursinus |
genre_facet |
Antarc* Antarctic Antarctic Fur Seals Arctocephalus gazella Callorhinus ursinus |
op_source |
Functional Ecology volume 31, issue 2, page 377-386 ISSN 0269-8463 1365-2435 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/1365-2435.12729 |
container_title |
Functional Ecology |
container_volume |
31 |
container_issue |
2 |
container_start_page |
377 |
op_container_end_page |
386 |
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1801383832914493440 |