Swimming kinematics and efficiency of entangled North Atlantic right whales
Marine mammals are streamlined for efficient movement in their relatively viscous fluid environment and are able to alter their kinematics (i.e. fluke stroke frequency, amplitude, or both) in response to changes in force balance. Entanglement in fishing gear adds significant drag and buoyant forces...
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ftdoajarticles:oai:doaj.org/article:c8e16c3b3259440eba4998ae28a06262 2023-05-15T16:08:19+02:00 Swimming kinematics and efficiency of entangled North Atlantic right whales van der Hoop, JM Nowacek, DP Moore, MJ Triantafyllou, MS 2017-01-01T00:00:00Z https://doi.org/10.3354/esr00781 https://doaj.org/article/c8e16c3b3259440eba4998ae28a06262 EN eng Inter-Research https://www.int-res.com/abstracts/esr/v32/p1-17/ https://doaj.org/toc/1863-5407 https://doaj.org/toc/1613-4796 1863-5407 1613-4796 doi:10.3354/esr00781 https://doaj.org/article/c8e16c3b3259440eba4998ae28a06262 Endangered Species Research, Vol 32, Pp 1-17 (2017) Zoology QL1-991 Botany QK1-989 article 2017 ftdoajarticles https://doi.org/10.3354/esr00781 2022-12-30T23:07:10Z Marine mammals are streamlined for efficient movement in their relatively viscous fluid environment and are able to alter their kinematics (i.e. fluke stroke frequency, amplitude, or both) in response to changes in force balance. Entanglement in fishing gear adds significant drag and buoyant forces that can impact swimming behaviors across a range of timescales. We deployed biologging tags during the disentanglement of 2 North Atlantic right whales Eubalaena glacialis to (1) examine how their kinematics changed in response to drag and buoyancy from entanglement in fishing gear, and (2) calculate resultant changes in swimming efficiency for one individual. We observed variable responses in dive behavior, but neither whale appeared to exploit added buoyancy to reduce energy expenditure. While some of the observed changes in behavior were individually specific, some swimming kinematics were consistently modulated in response to high drag and buoyancy associated with entangling gear, affecting thrust production. In high drag and buoyancy conditions, fluke strokes were significantly shorter and more variable in shape, and gliding was less frequent. Thrust and efficiency significantly differed among dive phases. Disentanglement reduced thrust coefficients ~4-fold, leading to 1.2 to 1.8-fold lower power (W). Ideal propulsive efficiency was significantly lower when entangled, though we detected no difference in observed propulsive efficiency between the conditions. Similar to carrying heavy objects or changing shoes, we present another condition where animals perceive unique movement constraints over seconds to minutes and develop compensatory strategies, altering their movement accordingly. Article in Journal/Newspaper Eubalaena glacialis North Atlantic Directory of Open Access Journals: DOAJ Articles Endangered Species Research 32 1 17 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Zoology QL1-991 Botany QK1-989 |
spellingShingle |
Zoology QL1-991 Botany QK1-989 van der Hoop, JM Nowacek, DP Moore, MJ Triantafyllou, MS Swimming kinematics and efficiency of entangled North Atlantic right whales |
topic_facet |
Zoology QL1-991 Botany QK1-989 |
description |
Marine mammals are streamlined for efficient movement in their relatively viscous fluid environment and are able to alter their kinematics (i.e. fluke stroke frequency, amplitude, or both) in response to changes in force balance. Entanglement in fishing gear adds significant drag and buoyant forces that can impact swimming behaviors across a range of timescales. We deployed biologging tags during the disentanglement of 2 North Atlantic right whales Eubalaena glacialis to (1) examine how their kinematics changed in response to drag and buoyancy from entanglement in fishing gear, and (2) calculate resultant changes in swimming efficiency for one individual. We observed variable responses in dive behavior, but neither whale appeared to exploit added buoyancy to reduce energy expenditure. While some of the observed changes in behavior were individually specific, some swimming kinematics were consistently modulated in response to high drag and buoyancy associated with entangling gear, affecting thrust production. In high drag and buoyancy conditions, fluke strokes were significantly shorter and more variable in shape, and gliding was less frequent. Thrust and efficiency significantly differed among dive phases. Disentanglement reduced thrust coefficients ~4-fold, leading to 1.2 to 1.8-fold lower power (W). Ideal propulsive efficiency was significantly lower when entangled, though we detected no difference in observed propulsive efficiency between the conditions. Similar to carrying heavy objects or changing shoes, we present another condition where animals perceive unique movement constraints over seconds to minutes and develop compensatory strategies, altering their movement accordingly. |
format |
Article in Journal/Newspaper |
author |
van der Hoop, JM Nowacek, DP Moore, MJ Triantafyllou, MS |
author_facet |
van der Hoop, JM Nowacek, DP Moore, MJ Triantafyllou, MS |
author_sort |
van der Hoop, JM |
title |
Swimming kinematics and efficiency of entangled North Atlantic right whales |
title_short |
Swimming kinematics and efficiency of entangled North Atlantic right whales |
title_full |
Swimming kinematics and efficiency of entangled North Atlantic right whales |
title_fullStr |
Swimming kinematics and efficiency of entangled North Atlantic right whales |
title_full_unstemmed |
Swimming kinematics and efficiency of entangled North Atlantic right whales |
title_sort |
swimming kinematics and efficiency of entangled north atlantic right whales |
publisher |
Inter-Research |
publishDate |
2017 |
url |
https://doi.org/10.3354/esr00781 https://doaj.org/article/c8e16c3b3259440eba4998ae28a06262 |
genre |
Eubalaena glacialis North Atlantic |
genre_facet |
Eubalaena glacialis North Atlantic |
op_source |
Endangered Species Research, Vol 32, Pp 1-17 (2017) |
op_relation |
https://www.int-res.com/abstracts/esr/v32/p1-17/ https://doaj.org/toc/1863-5407 https://doaj.org/toc/1613-4796 1863-5407 1613-4796 doi:10.3354/esr00781 https://doaj.org/article/c8e16c3b3259440eba4998ae28a06262 |
op_doi |
https://doi.org/10.3354/esr00781 |
container_title |
Endangered Species Research |
container_volume |
32 |
container_start_page |
1 |
op_container_end_page |
17 |
_version_ |
1766404369235836928 |