Intra-seasonal variation in feeding rates and diel foraging behaviour in a seasonally fasting mammal, the humpback whale
Antarctic humpback whales forage in summer, coincident with the seasonal abundance of their primary prey, the Antarctic krill. During the feeding season, humpback whales accumulate energy stores sufficient to fuel their fasting period lasting over six months. Previous animal movement modelling work...
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ftdoajarticles:oai:doaj.org/article:f4e56e4532994293a4ff21a18894b849 2023-05-15T14:02:19+02:00 Intra-seasonal variation in feeding rates and diel foraging behaviour in a seasonally fasting mammal, the humpback whale Ross C. Nichols David E. Cade Shirel Kahane-Rapport Jeremy Goldbogen Alison Stimpert Douglas Nowacek Andrew J. Read David W. Johnston Ari Friedlaender 2022-07-01T00:00:00Z https://doi.org/10.1098/rsos.211674 https://doaj.org/article/f4e56e4532994293a4ff21a18894b849 EN eng The Royal Society https://royalsocietypublishing.org/doi/10.1098/rsos.211674 https://doaj.org/toc/2054-5703 doi:10.1098/rsos.211674 2054-5703 https://doaj.org/article/f4e56e4532994293a4ff21a18894b849 Royal Society Open Science, Vol 9, Iss 7 (2022) humpback whale foraging ecology seasonal foraging fasting mammal Antarctic biologging Science Q article 2022 ftdoajarticles https://doi.org/10.1098/rsos.211674 2022-12-30T19:32:08Z Antarctic humpback whales forage in summer, coincident with the seasonal abundance of their primary prey, the Antarctic krill. During the feeding season, humpback whales accumulate energy stores sufficient to fuel their fasting period lasting over six months. Previous animal movement modelling work (using area-restricted search as a proxy) suggests a hyperphagic period late in the feeding season, similar in timing to some terrestrial fasting mammals. However, no direct measures of seasonal foraging behaviour existed to corroborate this hypothesis. We attached high-resolution, motion-sensing biologging tags to 69 humpback whales along the Western Antarctic Peninsula throughout the feeding season from January to June to determine how foraging effort changes throughout the season. Our results did not support existing hypotheses: we found a significant reduction in foraging presence and feeding rates from the beginning to the end of the feeding season. During the early summer period, feeding occurred during all hours at high rates. As the season progressed, foraging occurred mostly at night and at lower rates. We provide novel information on seasonal changes in foraging of humpback whales and suggest that these animals, contrary to nearly all other animals that seasonally fast, exhibit high feeding rates soon after exiting the fasting period Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Antarctic Peninsula Humpback Whale Directory of Open Access Journals: DOAJ Articles Antarctic Antarctic Peninsula The Antarctic Royal Society Open Science 9 7 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
humpback whale foraging ecology seasonal foraging fasting mammal Antarctic biologging Science Q |
spellingShingle |
humpback whale foraging ecology seasonal foraging fasting mammal Antarctic biologging Science Q Ross C. Nichols David E. Cade Shirel Kahane-Rapport Jeremy Goldbogen Alison Stimpert Douglas Nowacek Andrew J. Read David W. Johnston Ari Friedlaender Intra-seasonal variation in feeding rates and diel foraging behaviour in a seasonally fasting mammal, the humpback whale |
topic_facet |
humpback whale foraging ecology seasonal foraging fasting mammal Antarctic biologging Science Q |
description |
Antarctic humpback whales forage in summer, coincident with the seasonal abundance of their primary prey, the Antarctic krill. During the feeding season, humpback whales accumulate energy stores sufficient to fuel their fasting period lasting over six months. Previous animal movement modelling work (using area-restricted search as a proxy) suggests a hyperphagic period late in the feeding season, similar in timing to some terrestrial fasting mammals. However, no direct measures of seasonal foraging behaviour existed to corroborate this hypothesis. We attached high-resolution, motion-sensing biologging tags to 69 humpback whales along the Western Antarctic Peninsula throughout the feeding season from January to June to determine how foraging effort changes throughout the season. Our results did not support existing hypotheses: we found a significant reduction in foraging presence and feeding rates from the beginning to the end of the feeding season. During the early summer period, feeding occurred during all hours at high rates. As the season progressed, foraging occurred mostly at night and at lower rates. We provide novel information on seasonal changes in foraging of humpback whales and suggest that these animals, contrary to nearly all other animals that seasonally fast, exhibit high feeding rates soon after exiting the fasting period |
format |
Article in Journal/Newspaper |
author |
Ross C. Nichols David E. Cade Shirel Kahane-Rapport Jeremy Goldbogen Alison Stimpert Douglas Nowacek Andrew J. Read David W. Johnston Ari Friedlaender |
author_facet |
Ross C. Nichols David E. Cade Shirel Kahane-Rapport Jeremy Goldbogen Alison Stimpert Douglas Nowacek Andrew J. Read David W. Johnston Ari Friedlaender |
author_sort |
Ross C. Nichols |
title |
Intra-seasonal variation in feeding rates and diel foraging behaviour in a seasonally fasting mammal, the humpback whale |
title_short |
Intra-seasonal variation in feeding rates and diel foraging behaviour in a seasonally fasting mammal, the humpback whale |
title_full |
Intra-seasonal variation in feeding rates and diel foraging behaviour in a seasonally fasting mammal, the humpback whale |
title_fullStr |
Intra-seasonal variation in feeding rates and diel foraging behaviour in a seasonally fasting mammal, the humpback whale |
title_full_unstemmed |
Intra-seasonal variation in feeding rates and diel foraging behaviour in a seasonally fasting mammal, the humpback whale |
title_sort |
intra-seasonal variation in feeding rates and diel foraging behaviour in a seasonally fasting mammal, the humpback whale |
publisher |
The Royal Society |
publishDate |
2022 |
url |
https://doi.org/10.1098/rsos.211674 https://doaj.org/article/f4e56e4532994293a4ff21a18894b849 |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Humpback Whale |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Humpback Whale |
op_source |
Royal Society Open Science, Vol 9, Iss 7 (2022) |
op_relation |
https://royalsocietypublishing.org/doi/10.1098/rsos.211674 https://doaj.org/toc/2054-5703 doi:10.1098/rsos.211674 2054-5703 https://doaj.org/article/f4e56e4532994293a4ff21a18894b849 |
op_doi |
https://doi.org/10.1098/rsos.211674 |
container_title |
Royal Society Open Science |
container_volume |
9 |
container_issue |
7 |
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1766272541884678144 |