Data 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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Dryad
2020
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Online Access: | https://doi.org/10.5061/dryad.ms75s |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::fdf559467a156caaf4ef3a6a1fdf53f6 2023-05-15T16:35:59+02:00 Data from: Humpback whales feed on hatchery-released juvenile salmon Chenoweth, Ellen M. Straley, Janice M. McPhee, Megan V. Atkinson, Shannon Reifenstuhl, Steve Chenoweth, Ellen 2020-06-27 https://doi.org/10.5061/dryad.ms75s en eng Dryad http://dx.doi.org/10.5061/dryad.ms75s https://dx.doi.org/10.5061/dryad.ms75s lic_creative-commons 10.5061/dryad.ms75s oai:easy.dans.knaw.nl:easy-dataset:101461 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:101461 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f re3data_____::r3d100000044 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 Aquaculture 2010-2015 Oncorhynchus spp Megaptera novaeangliae foraging marine mammal-fishery interactions Behavior Southeast Alaska Life sciences medicine and health care envir archeo Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2020 fttriple https://doi.org/10.5061/dryad.ms75s 2023-01-22T16:51:02Z 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. Chenoweth et al 2017. Roy_Soc_Open_Science.RR Code for the calculation of most in-text results, Tables 1 and 2 and the production of Figure 3.Chenoweth et al 2017. Roy_Soc_Open_Science.RBehaveNewData2This dataframe includes the combinations of predictors necessary for creation of Figure 3. The models created by Chenoweth_et_al_2017_Roy_Soc_Open_Sci.R provides the predicted probabilities of humpback whale sighting based on these predictors.HatcheryObsThis dataframe provides observations from all five hatchery release sites over six years. The raw data has been filtered as described in the methods section of the manuscript.Releases.SumThis dataframe provides the Julian Day of the first and last releases ... Dataset Humpback Whale Megaptera novaeangliae Alaska Unknown |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
Aquaculture 2010-2015 Oncorhynchus spp Megaptera novaeangliae foraging marine mammal-fishery interactions Behavior Southeast Alaska Life sciences medicine and health care envir archeo |
spellingShingle |
Aquaculture 2010-2015 Oncorhynchus spp Megaptera novaeangliae foraging marine mammal-fishery interactions Behavior Southeast Alaska Life sciences medicine and health care envir archeo Chenoweth, Ellen M. Straley, Janice M. McPhee, Megan V. Atkinson, Shannon Reifenstuhl, Steve Chenoweth, Ellen Data from: Humpback whales feed on hatchery-released juvenile salmon |
topic_facet |
Aquaculture 2010-2015 Oncorhynchus spp Megaptera novaeangliae foraging marine mammal-fishery interactions Behavior Southeast Alaska Life sciences medicine and health care envir archeo |
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. Chenoweth et al 2017. Roy_Soc_Open_Science.RR Code for the calculation of most in-text results, Tables 1 and 2 and the production of Figure 3.Chenoweth et al 2017. Roy_Soc_Open_Science.RBehaveNewData2This dataframe includes the combinations of predictors necessary for creation of Figure 3. The models created by Chenoweth_et_al_2017_Roy_Soc_Open_Sci.R provides the predicted probabilities of humpback whale sighting based on these predictors.HatcheryObsThis dataframe provides observations from all five hatchery release sites over six years. The raw data has been filtered as described in the methods section of the manuscript.Releases.SumThis dataframe provides the Julian Day of the first and last releases ... |
format |
Dataset |
author |
Chenoweth, Ellen M. Straley, Janice M. McPhee, Megan V. Atkinson, Shannon Reifenstuhl, Steve Chenoweth, Ellen |
author_facet |
Chenoweth, Ellen M. Straley, Janice M. McPhee, Megan V. Atkinson, Shannon Reifenstuhl, Steve Chenoweth, Ellen |
author_sort |
Chenoweth, Ellen M. |
title |
Data from: Humpback whales feed on hatchery-released juvenile salmon |
title_short |
Data from: Humpback whales feed on hatchery-released juvenile salmon |
title_full |
Data from: Humpback whales feed on hatchery-released juvenile salmon |
title_fullStr |
Data from: Humpback whales feed on hatchery-released juvenile salmon |
title_full_unstemmed |
Data from: Humpback whales feed on hatchery-released juvenile salmon |
title_sort |
data from: humpback whales feed on hatchery-released juvenile salmon |
publisher |
Dryad |
publishDate |
2020 |
url |
https://doi.org/10.5061/dryad.ms75s |
genre |
Humpback Whale Megaptera novaeangliae Alaska |
genre_facet |
Humpback Whale Megaptera novaeangliae Alaska |
op_source |
10.5061/dryad.ms75s oai:easy.dans.knaw.nl:easy-dataset:101461 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:101461 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f re3data_____::r3d100000044 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 |
op_relation |
http://dx.doi.org/10.5061/dryad.ms75s https://dx.doi.org/10.5061/dryad.ms75s |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.ms75s |
_version_ |
1766026295688298496 |