Supplementary material from "Exploring variability in the diet of depredating sperm whales in the Gulf of Alaska through stable isotope analysis"
Sperm whales interact with commercially important groundfish fisheries offshore in the Gulf of Alaska (GOA). This study aims to use stable isotope analysis to better understand the trophic variability of sperm whales and their potential prey, and to use dietary mixing models to estimate the importan...
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ftdatacite:10.6084/m9.figshare.c.4880262.v1 2023-05-15T18:26:39+02:00 Supplementary material from "Exploring variability in the diet of depredating sperm whales in the Gulf of Alaska through stable isotope analysis" Wild, Lauren A. Mueter, Franz Witteveen, Briana Straley, Janice M. 2020 https://dx.doi.org/10.6084/m9.figshare.c.4880262.v1 https://rs.figshare.com/collections/Supplementary_material_from_Exploring_variability_in_the_diet_of_depredating_sperm_whales_in_the_Gulf_of_Alaska_through_stable_isotope_analysis_/4880262/1 unknown The Royal Society https://dx.doi.org/10.1098/rsos.191110 https://dx.doi.org/10.6084/m9.figshare.c.4880262 CC BY 4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Ecology FOS Biological sciences Collection article 2020 ftdatacite https://doi.org/10.6084/m9.figshare.c.4880262.v1 https://doi.org/10.1098/rsos.191110 https://doi.org/10.6084/m9.figshare.c.4880262 2021-11-05T12:55:41Z Sperm whales interact with commercially important groundfish fisheries offshore in the Gulf of Alaska (GOA). This study aims to use stable isotope analysis to better understand the trophic variability of sperm whales and their potential prey, and to use dietary mixing models to estimate the importance of prey species to sperm whale diets. We analysed tissue samples from sperm whales and seven potential prey (five groundfish and two squid species). Samples were analysed for stable carbon and nitrogen isotope ratios, and diet composition was estimated using Bayesian isotopic mixing models. Mixing model results suggest that an isotopically combined sablefish/dogfish group, skates and rockfish make up the largest proportion of sperm whale diets (35%, 28% and 12%) in the GOA. The top prey items of whales that interact more frequently with fishing vessels consisted of skates (49%) and the sablefish/dogfish group (24%). This is the first known study to provide an isotopic baseline of adult male sperm whales and these adult groundfish and offshore squid species, and to assign contributions of prey to whale diets in the GOA. This study provides information to commercial fishermen and fisheries managers to better understand trophic connections of important commercial species. Article in Journal/Newspaper Sperm whale Alaska DataCite Metadata Store (German National Library of Science and Technology) Gulf of Alaska |
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DataCite Metadata Store (German National Library of Science and Technology) |
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Ecology FOS Biological sciences |
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Ecology FOS Biological sciences Wild, Lauren A. Mueter, Franz Witteveen, Briana Straley, Janice M. Supplementary material from "Exploring variability in the diet of depredating sperm whales in the Gulf of Alaska through stable isotope analysis" |
topic_facet |
Ecology FOS Biological sciences |
description |
Sperm whales interact with commercially important groundfish fisheries offshore in the Gulf of Alaska (GOA). This study aims to use stable isotope analysis to better understand the trophic variability of sperm whales and their potential prey, and to use dietary mixing models to estimate the importance of prey species to sperm whale diets. We analysed tissue samples from sperm whales and seven potential prey (five groundfish and two squid species). Samples were analysed for stable carbon and nitrogen isotope ratios, and diet composition was estimated using Bayesian isotopic mixing models. Mixing model results suggest that an isotopically combined sablefish/dogfish group, skates and rockfish make up the largest proportion of sperm whale diets (35%, 28% and 12%) in the GOA. The top prey items of whales that interact more frequently with fishing vessels consisted of skates (49%) and the sablefish/dogfish group (24%). This is the first known study to provide an isotopic baseline of adult male sperm whales and these adult groundfish and offshore squid species, and to assign contributions of prey to whale diets in the GOA. This study provides information to commercial fishermen and fisheries managers to better understand trophic connections of important commercial species. |
format |
Article in Journal/Newspaper |
author |
Wild, Lauren A. Mueter, Franz Witteveen, Briana Straley, Janice M. |
author_facet |
Wild, Lauren A. Mueter, Franz Witteveen, Briana Straley, Janice M. |
author_sort |
Wild, Lauren A. |
title |
Supplementary material from "Exploring variability in the diet of depredating sperm whales in the Gulf of Alaska through stable isotope analysis" |
title_short |
Supplementary material from "Exploring variability in the diet of depredating sperm whales in the Gulf of Alaska through stable isotope analysis" |
title_full |
Supplementary material from "Exploring variability in the diet of depredating sperm whales in the Gulf of Alaska through stable isotope analysis" |
title_fullStr |
Supplementary material from "Exploring variability in the diet of depredating sperm whales in the Gulf of Alaska through stable isotope analysis" |
title_full_unstemmed |
Supplementary material from "Exploring variability in the diet of depredating sperm whales in the Gulf of Alaska through stable isotope analysis" |
title_sort |
supplementary material from "exploring variability in the diet of depredating sperm whales in the gulf of alaska through stable isotope analysis" |
publisher |
The Royal Society |
publishDate |
2020 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.4880262.v1 https://rs.figshare.com/collections/Supplementary_material_from_Exploring_variability_in_the_diet_of_depredating_sperm_whales_in_the_Gulf_of_Alaska_through_stable_isotope_analysis_/4880262/1 |
geographic |
Gulf of Alaska |
geographic_facet |
Gulf of Alaska |
genre |
Sperm whale Alaska |
genre_facet |
Sperm whale Alaska |
op_relation |
https://dx.doi.org/10.1098/rsos.191110 https://dx.doi.org/10.6084/m9.figshare.c.4880262 |
op_rights |
CC BY 4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.4880262.v1 https://doi.org/10.1098/rsos.191110 https://doi.org/10.6084/m9.figshare.c.4880262 |
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1766208625044357120 |