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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Online Access: | https://scholarworks.sjsu.edu/faculty_rsca/3130 https://doi.org/10.1098/rsos.211674 https://scholarworks.sjsu.edu/context/faculty_rsca/article/4129/viewcontent/Intra_seasonal_20variation_20in_20feeding_20rates_20and_20diel_20foraging_20behaviour_20in_20a_20seasonally_20fasting_20mammal_2C_20the_20humpback_20whale.pdf |
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ftsanjosestate:oai:scholarworks.sjsu.edu:faculty_rsca-4129 2023-07-30T03:59:26+02:00 Intra-seasonal variation in feeding rates and diel foraging behaviour in a seasonally fasting mammal, the humpback whale Nichols, Ross C. Cade, David E. Kahane-Rapport, Shirel Goldbogen, Jeremy Stimpert, Alison Nowacek, Douglas Read, Andrew J. Johnston, David W. Friedlaender, Ari 2022-07-06T07:00:00Z application/pdf https://scholarworks.sjsu.edu/faculty_rsca/3130 https://doi.org/10.1098/rsos.211674 https://scholarworks.sjsu.edu/context/faculty_rsca/article/4129/viewcontent/Intra_seasonal_20variation_20in_20feeding_20rates_20and_20diel_20foraging_20behaviour_20in_20a_20seasonally_20fasting_20mammal_2C_20the_20humpback_20whale.pdf unknown SJSU ScholarWorks https://scholarworks.sjsu.edu/faculty_rsca/3130 doi:10.1098/rsos.211674 https://scholarworks.sjsu.edu/context/faculty_rsca/article/4129/viewcontent/Intra_seasonal_20variation_20in_20feeding_20rates_20and_20diel_20foraging_20behaviour_20in_20a_20seasonally_20fasting_20mammal_2C_20the_20humpback_20whale.pdf http://creativecommons.org/licenses/by/4.0/ Faculty Research, Scholarly, and Creative Activity Antarctic biologging fasting mammal foraging ecology humpback whale seasonal foraging Moss Landing Marine Laboratories text 2022 ftsanjosestate https://doi.org/10.1098/rsos.211674 2023-07-17T19:09:52Z 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 Text Antarc* Antarctic Antarctic Krill Antarctic Peninsula Humpback Whale San José State University: SJSU ScholarWorks Antarctic The Antarctic Antarctic Peninsula Royal Society Open Science 9 7 |
institution |
Open Polar |
collection |
San José State University: SJSU ScholarWorks |
op_collection_id |
ftsanjosestate |
language |
unknown |
topic |
Antarctic biologging fasting mammal foraging ecology humpback whale seasonal foraging Moss Landing Marine Laboratories |
spellingShingle |
Antarctic biologging fasting mammal foraging ecology humpback whale seasonal foraging Moss Landing Marine Laboratories Nichols, Ross C. Cade, David E. Kahane-Rapport, Shirel Goldbogen, Jeremy Stimpert, Alison Nowacek, Douglas Read, Andrew J. Johnston, David W. Friedlaender, Ari Intra-seasonal variation in feeding rates and diel foraging behaviour in a seasonally fasting mammal, the humpback whale |
topic_facet |
Antarctic biologging fasting mammal foraging ecology humpback whale seasonal foraging Moss Landing Marine Laboratories |
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 |
Text |
author |
Nichols, Ross C. Cade, David E. Kahane-Rapport, Shirel Goldbogen, Jeremy Stimpert, Alison Nowacek, Douglas Read, Andrew J. Johnston, David W. Friedlaender, Ari |
author_facet |
Nichols, Ross C. Cade, David E. Kahane-Rapport, Shirel Goldbogen, Jeremy Stimpert, Alison Nowacek, Douglas Read, Andrew J. Johnston, David W. Friedlaender, Ari |
author_sort |
Nichols, Ross C. |
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 |
SJSU ScholarWorks |
publishDate |
2022 |
url |
https://scholarworks.sjsu.edu/faculty_rsca/3130 https://doi.org/10.1098/rsos.211674 https://scholarworks.sjsu.edu/context/faculty_rsca/article/4129/viewcontent/Intra_seasonal_20variation_20in_20feeding_20rates_20and_20diel_20foraging_20behaviour_20in_20a_20seasonally_20fasting_20mammal_2C_20the_20humpback_20whale.pdf |
geographic |
Antarctic The Antarctic Antarctic Peninsula |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Humpback Whale |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Humpback Whale |
op_source |
Faculty Research, Scholarly, and Creative Activity |
op_relation |
https://scholarworks.sjsu.edu/faculty_rsca/3130 doi:10.1098/rsos.211674 https://scholarworks.sjsu.edu/context/faculty_rsca/article/4129/viewcontent/Intra_seasonal_20variation_20in_20feeding_20rates_20and_20diel_20foraging_20behaviour_20in_20a_20seasonally_20fasting_20mammal_2C_20the_20humpback_20whale.pdf |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1098/rsos.211674 |
container_title |
Royal Society Open Science |
container_volume |
9 |
container_issue |
7 |
_version_ |
1772810258713935872 |