Supplementary material from "Humpback whales feed on hatchery-released juvenile salmon"
Humpback whales are remarkable for the behavioural plasticity of their feeding tactics and the diversity of their diets. Within the last decade at hatchery release sites in Southeast Alaska, humpback whales have begun exploiting juvenile salmon, a previously undocumented prey. The anthropogenic sour...
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ftdatacite:10.6084/m9.figshare.c.3810562.v1 2023-05-15T16:36:04+02:00 Supplementary material from "Humpback whales feed on hatchery-released juvenile salmon" Chenoweth, Ellen M. Straley, Janice M. McPhee, Megan V. Atkinson, Shannon Reifenstuhl, Steve 2017 https://dx.doi.org/10.6084/m9.figshare.c.3810562.v1 https://figshare.com/collections/Supplementary_material_from_Humpback_whales_feed_on_hatchery-released_juvenile_salmon_/3810562/1 unknown Figshare https://dx.doi.org/10.1098/rsos.170180 https://dx.doi.org/10.6084/m9.figshare.c.3810562 CC BY https://creativecommons.org/licenses/by/4.0 CC-BY Ecology FOS Biological sciences 60801 Animal Behaviour Collection article 2017 ftdatacite https://doi.org/10.6084/m9.figshare.c.3810562.v1 https://doi.org/10.1098/rsos.170180 https://doi.org/10.6084/m9.figshare.c.3810562 2021-11-05T12:55:41Z Humpback whales are remarkable for the behavioural plasticity of their feeding tactics and the diversity of their diets. Within the last decade at hatchery release sites in Southeast Alaska, humpback whales have begun exploiting juvenile salmon, a previously undocumented prey. The anthropogenic source of these salmon and their important contribution to local fisheries makes the emergence of humpback whale predation a concern for the Southeast Alaska economy. Here, we describe the frequency of observing humpback whales, examine the role of temporal and spatial variables affecting the probability of sighting humpback whales, and describe prey capture behaviours at five hatchery release sites. We coordinated twice-daily 15-min observations during the spring release seasons 2010–2015. Using logistic regression, we determined that the probability of occurrence of humpback whales increased after releases began and decreased after releases concluded. The probability of whale occurrence varied among release sites, but did not increase significantly over the 6-year study period. Whales were reported to be feeding on juvenile chum, Chinook and coho salmon, with photographic and video records of whales feeding on coho salmon. The ability to adapt to new prey sources may be key to sustaining their population in a changing ocean. Article in Journal/Newspaper Humpback Whale Alaska DataCite Metadata Store (German National Library of Science and Technology) |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
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language |
unknown |
topic |
Ecology FOS Biological sciences 60801 Animal Behaviour |
spellingShingle |
Ecology FOS Biological sciences 60801 Animal Behaviour Chenoweth, Ellen M. Straley, Janice M. McPhee, Megan V. Atkinson, Shannon Reifenstuhl, Steve Supplementary material from "Humpback whales feed on hatchery-released juvenile salmon" |
topic_facet |
Ecology FOS Biological sciences 60801 Animal Behaviour |
description |
Humpback whales are remarkable for the behavioural plasticity of their feeding tactics and the diversity of their diets. Within the last decade at hatchery release sites in Southeast Alaska, humpback whales have begun exploiting juvenile salmon, a previously undocumented prey. The anthropogenic source of these salmon and their important contribution to local fisheries makes the emergence of humpback whale predation a concern for the Southeast Alaska economy. Here, we describe the frequency of observing humpback whales, examine the role of temporal and spatial variables affecting the probability of sighting humpback whales, and describe prey capture behaviours at five hatchery release sites. We coordinated twice-daily 15-min observations during the spring release seasons 2010–2015. Using logistic regression, we determined that the probability of occurrence of humpback whales increased after releases began and decreased after releases concluded. The probability of whale occurrence varied among release sites, but did not increase significantly over the 6-year study period. Whales were reported to be feeding on juvenile chum, Chinook and coho salmon, with photographic and video records of whales feeding on coho salmon. The ability to adapt to new prey sources may be key to sustaining their population in a changing ocean. |
format |
Article in Journal/Newspaper |
author |
Chenoweth, Ellen M. Straley, Janice M. McPhee, Megan V. Atkinson, Shannon Reifenstuhl, Steve |
author_facet |
Chenoweth, Ellen M. Straley, Janice M. McPhee, Megan V. Atkinson, Shannon Reifenstuhl, Steve |
author_sort |
Chenoweth, Ellen M. |
title |
Supplementary material from "Humpback whales feed on hatchery-released juvenile salmon" |
title_short |
Supplementary material from "Humpback whales feed on hatchery-released juvenile salmon" |
title_full |
Supplementary material from "Humpback whales feed on hatchery-released juvenile salmon" |
title_fullStr |
Supplementary material from "Humpback whales feed on hatchery-released juvenile salmon" |
title_full_unstemmed |
Supplementary material from "Humpback whales feed on hatchery-released juvenile salmon" |
title_sort |
supplementary material from "humpback whales feed on hatchery-released juvenile salmon" |
publisher |
Figshare |
publishDate |
2017 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.3810562.v1 https://figshare.com/collections/Supplementary_material_from_Humpback_whales_feed_on_hatchery-released_juvenile_salmon_/3810562/1 |
genre |
Humpback Whale Alaska |
genre_facet |
Humpback Whale Alaska |
op_relation |
https://dx.doi.org/10.1098/rsos.170180 https://dx.doi.org/10.6084/m9.figshare.c.3810562 |
op_rights |
CC BY https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.3810562.v1 https://doi.org/10.1098/rsos.170180 https://doi.org/10.6084/m9.figshare.c.3810562 |
_version_ |
1766026368585302016 |