Body density of humpback whales (Megaptera novaengliae) in feeding aggregations estimated from hydrodynamic gliding performance
Many baleen whales undertake annual fasting and feeding cycles, resulting in substantial changes in their body condition, an important factor affecting fitness. As a measure of lipid store body condition, tissue density of a few deep diving marine mammals has been estimated using a hydrodynamic glid...
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2018
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Online Access: | http://insight.cumbria.ac.uk/id/eprint/3980/ https://insight.cumbria.ac.uk/id/eprint/3980/8/Deecke_BodyDensityOfPubpdf.pdf https://insight.cumbria.ac.uk/id/eprint/3980/1/Deecke_BodyDensityOfHumpback.pdf https://doi.org/10.1371/journal.pone.0200287 |
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ftunivcumbria:oai:insight.cumbria.ac.uk:3980 2023-05-15T14:01:36+02:00 Body density of humpback whales (Megaptera novaengliae) in feeding aggregations estimated from hydrodynamic gliding performance Narazaki, Tomoko Isojunno, Saana Nowacek, Douglas P. Swift, Rene Friedlaender, Ari S. Ramp, Christian Smout, Sophie Aoki, Kagari Deecke, Volker B. Sato, Katsufumi Miller, Patrick J.O. 2018-07-12 application/pdf http://insight.cumbria.ac.uk/id/eprint/3980/ https://insight.cumbria.ac.uk/id/eprint/3980/8/Deecke_BodyDensityOfPubpdf.pdf https://insight.cumbria.ac.uk/id/eprint/3980/1/Deecke_BodyDensityOfHumpback.pdf https://doi.org/10.1371/journal.pone.0200287 en eng Public Library of Science https://insight.cumbria.ac.uk/id/eprint/3980/8/Deecke_BodyDensityOfPubpdf.pdf https://insight.cumbria.ac.uk/id/eprint/3980/1/Deecke_BodyDensityOfHumpback.pdf Narazaki, Tomoko, Isojunno, Saana, Nowacek, Douglas P., Swift, Rene, Friedlaender, Ari S., Ramp, Christian, Smout, Sophie, Aoki, Kagari, Deecke, Volker B., Sato, Katsufumi and Miller, Patrick J.O. (2018) Body density of humpback whales (Megaptera novaengliae) in feeding aggregations estimated from hydrodynamic gliding performance. PLoS ONE, 13 (7). e0200287. doi:10.1371/journal.pone.0200287 cc_by_4 cc_by_nc_4 CC-BY CC-BY-NC 590 ANIMALS (ZOOLOGY) 599 Mammals Article PeerReviewed 2018 ftunivcumbria https://doi.org/10.1371/journal.pone.0200287 2022-02-22T08:19:25Z Many baleen whales undertake annual fasting and feeding cycles, resulting in substantial changes in their body condition, an important factor affecting fitness. As a measure of lipid store body condition, tissue density of a few deep diving marine mammals has been estimated using a hydrodynamic glide model of drag and buoyancy forces. Here, we applied the method to shallow-diving humpback whales (Megaptera novaeangliae) in North Atlantic and Antarctic feeding aggregations. High-resolution 3-axis acceleration, depth and speed data were collected from 24 whales. Measured values of acceleration during 5 s glides were fitted to a hydrodynamic glide model to estimate unknown parameters (tissue density, drag term and diving gas volume) in a Bayesian framework. Estimated species-average tissue density (1031.6 ± 2.1 kg m-3, ±95% credible interval) indicates that humpback whale tissue is typically negatively buoyant although there was a large inter-individual variation ranging from 1025.2 to 1043.1 kg m-3. The precision of the individual estimates was substantially finer than the variation across different individual whales, demonstrating a progressive decrease in tissue density throughout the feeding season and comparably high lipid-store in pregnant females. The drag term (CDAm-1) was estimated to be relatively high, indicating a large effect of lift-related induced drag for humpback whales. Our results show that tissue density of shallow diving baleen whales can be estimated using the hydrodynamic gliding model, although cross-validation with other techniques is an essential next step. This method for estimating body condition is likely to be broadly applicable across a range of aquatic animals and environments. Article in Journal/Newspaper Antarc* Antarctic baleen whales Humpback Whale Megaptera novaeangliae North Atlantic University of Cumbria: Insight Antarctic PLOS ONE 13 7 e0200287 |
institution |
Open Polar |
collection |
University of Cumbria: Insight |
op_collection_id |
ftunivcumbria |
language |
English |
topic |
590 ANIMALS (ZOOLOGY) 599 Mammals |
spellingShingle |
590 ANIMALS (ZOOLOGY) 599 Mammals Narazaki, Tomoko Isojunno, Saana Nowacek, Douglas P. Swift, Rene Friedlaender, Ari S. Ramp, Christian Smout, Sophie Aoki, Kagari Deecke, Volker B. Sato, Katsufumi Miller, Patrick J.O. Body density of humpback whales (Megaptera novaengliae) in feeding aggregations estimated from hydrodynamic gliding performance |
topic_facet |
590 ANIMALS (ZOOLOGY) 599 Mammals |
description |
Many baleen whales undertake annual fasting and feeding cycles, resulting in substantial changes in their body condition, an important factor affecting fitness. As a measure of lipid store body condition, tissue density of a few deep diving marine mammals has been estimated using a hydrodynamic glide model of drag and buoyancy forces. Here, we applied the method to shallow-diving humpback whales (Megaptera novaeangliae) in North Atlantic and Antarctic feeding aggregations. High-resolution 3-axis acceleration, depth and speed data were collected from 24 whales. Measured values of acceleration during 5 s glides were fitted to a hydrodynamic glide model to estimate unknown parameters (tissue density, drag term and diving gas volume) in a Bayesian framework. Estimated species-average tissue density (1031.6 ± 2.1 kg m-3, ±95% credible interval) indicates that humpback whale tissue is typically negatively buoyant although there was a large inter-individual variation ranging from 1025.2 to 1043.1 kg m-3. The precision of the individual estimates was substantially finer than the variation across different individual whales, demonstrating a progressive decrease in tissue density throughout the feeding season and comparably high lipid-store in pregnant females. The drag term (CDAm-1) was estimated to be relatively high, indicating a large effect of lift-related induced drag for humpback whales. Our results show that tissue density of shallow diving baleen whales can be estimated using the hydrodynamic gliding model, although cross-validation with other techniques is an essential next step. This method for estimating body condition is likely to be broadly applicable across a range of aquatic animals and environments. |
format |
Article in Journal/Newspaper |
author |
Narazaki, Tomoko Isojunno, Saana Nowacek, Douglas P. Swift, Rene Friedlaender, Ari S. Ramp, Christian Smout, Sophie Aoki, Kagari Deecke, Volker B. Sato, Katsufumi Miller, Patrick J.O. |
author_facet |
Narazaki, Tomoko Isojunno, Saana Nowacek, Douglas P. Swift, Rene Friedlaender, Ari S. Ramp, Christian Smout, Sophie Aoki, Kagari Deecke, Volker B. Sato, Katsufumi Miller, Patrick J.O. |
author_sort |
Narazaki, Tomoko |
title |
Body density of humpback whales (Megaptera novaengliae) in feeding aggregations estimated from hydrodynamic gliding performance |
title_short |
Body density of humpback whales (Megaptera novaengliae) in feeding aggregations estimated from hydrodynamic gliding performance |
title_full |
Body density of humpback whales (Megaptera novaengliae) in feeding aggregations estimated from hydrodynamic gliding performance |
title_fullStr |
Body density of humpback whales (Megaptera novaengliae) in feeding aggregations estimated from hydrodynamic gliding performance |
title_full_unstemmed |
Body density of humpback whales (Megaptera novaengliae) in feeding aggregations estimated from hydrodynamic gliding performance |
title_sort |
body density of humpback whales (megaptera novaengliae) in feeding aggregations estimated from hydrodynamic gliding performance |
publisher |
Public Library of Science |
publishDate |
2018 |
url |
http://insight.cumbria.ac.uk/id/eprint/3980/ https://insight.cumbria.ac.uk/id/eprint/3980/8/Deecke_BodyDensityOfPubpdf.pdf https://insight.cumbria.ac.uk/id/eprint/3980/1/Deecke_BodyDensityOfHumpback.pdf https://doi.org/10.1371/journal.pone.0200287 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic baleen whales Humpback Whale Megaptera novaeangliae North Atlantic |
genre_facet |
Antarc* Antarctic baleen whales Humpback Whale Megaptera novaeangliae North Atlantic |
op_relation |
https://insight.cumbria.ac.uk/id/eprint/3980/8/Deecke_BodyDensityOfPubpdf.pdf https://insight.cumbria.ac.uk/id/eprint/3980/1/Deecke_BodyDensityOfHumpback.pdf Narazaki, Tomoko, Isojunno, Saana, Nowacek, Douglas P., Swift, Rene, Friedlaender, Ari S., Ramp, Christian, Smout, Sophie, Aoki, Kagari, Deecke, Volker B., Sato, Katsufumi and Miller, Patrick J.O. (2018) Body density of humpback whales (Megaptera novaengliae) in feeding aggregations estimated from hydrodynamic gliding performance. PLoS ONE, 13 (7). e0200287. doi:10.1371/journal.pone.0200287 |
op_rights |
cc_by_4 cc_by_nc_4 |
op_rightsnorm |
CC-BY CC-BY-NC |
op_doi |
https://doi.org/10.1371/journal.pone.0200287 |
container_title |
PLOS ONE |
container_volume |
13 |
container_issue |
7 |
container_start_page |
e0200287 |
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