Table_3_Feeding ecology of Antarctic toothfish, Dissostichus mawsoni in the subarea 88.3 (Bellingshausen Sea and eastern Amundsen Sea) of the Southern Ocean.docx
Understanding feeding ecology is essential for ecosystem-based management. As dietary data can show differences depending on the spatiotemporal and ontogenetic aspects of the sample, the results should be derived based on various size classes and samples over a wide spatiotemporal range. Morphologic...
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ftfrontimediafig:oai:figshare.com:article/24792159 2024-01-07T09:38:13+01:00 Table_3_Feeding ecology of Antarctic toothfish, Dissostichus mawsoni in the subarea 88.3 (Bellingshausen Sea and eastern Amundsen Sea) of the Southern Ocean.docx Gi Chang Seong Sangdeok Chung Do-Gyun Kim Da Yeon Kang Suyeon Jin Gun Wook Baeck 2023-12-12T04:22:07Z https://doi.org/10.3389/fmars.2023.1240569.s003 https://figshare.com/articles/dataset/Table_3_Feeding_ecology_of_Antarctic_toothfish_Dissostichus_mawsoni_in_the_subarea_88_3_Bellingshausen_Sea_and_eastern_Amundsen_Sea_of_the_Southern_Ocean_docx/24792159 unknown doi:10.3389/fmars.2023.1240569.s003 https://figshare.com/articles/dataset/Table_3_Feeding_ecology_of_Antarctic_toothfish_Dissostichus_mawsoni_in_the_subarea_88_3_Bellingshausen_Sea_and_eastern_Amundsen_Sea_of_the_Southern_Ocean_docx/24792159 CC BY 4.0 Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Antarctic toothfish feeding ecology Southern Ocean CCAMLR food web Dataset 2023 ftfrontimediafig https://doi.org/10.3389/fmars.2023.1240569.s003 2023-12-14T00:13:33Z Understanding feeding ecology is essential for ecosystem-based management. As dietary data can show differences depending on the spatiotemporal and ontogenetic aspects of the sample, the results should be derived based on various size classes and samples over a wide spatiotemporal range. Morphological analysis of the stomach contents of Dissostichus mawsoni, a piscivore, collected at depths of 603–2,113 m in subarea 88.3 during the Antarctic summer fishing seasons from 2016 to 2020 was used to assess the dietary composition according to the research block, fishing season, depth, and size. Here, we used 1,639 D. mawsoni specimens with a total length range of 44.5–189.0 cm. The dietary composition of D. mawsoni did not show significant differences by fishing season but differed with research block, depth, and size. Macrouridae dominated research blocks 88.3_1 and 88.3_3; Nototheniidae dominated research blocks 88.3_2 and 88.3_6; and Channichthyidae dominated research blocks 88.3_4 and 88.3_5. The proportion of Nototheniidae decreased as depth increased, whereas the consumption of Channichthyidae increased gradually with depth in research blocks 88.3_3 and 88.3_4. The proportion of Channichthyidae decreased as body size increased, whereas the consumption of Macrouridae increased gradually with body size in both blocks 88.3_3 and 88.3_4. During the study period, the dietary composition of D. mawsoni in both blocks 88.3_3 and 88.3_4 did not show significant temporal differences, suggesting that these data could be used as a baseline for identifying future environmental changes in the region. This study provides information on the relationships between various species and benthic fish fauna, which are essential for ecosystem-based management. Dataset Amundsen Sea Antarc* Antarctic Antarctic Toothfish Bellingshausen Sea Southern Ocean Frontiers: Figshare Antarctic Southern Ocean The Antarctic Amundsen Sea Bellingshausen Sea |
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Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Antarctic toothfish feeding ecology Southern Ocean CCAMLR food web |
spellingShingle |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Antarctic toothfish feeding ecology Southern Ocean CCAMLR food web Gi Chang Seong Sangdeok Chung Do-Gyun Kim Da Yeon Kang Suyeon Jin Gun Wook Baeck Table_3_Feeding ecology of Antarctic toothfish, Dissostichus mawsoni in the subarea 88.3 (Bellingshausen Sea and eastern Amundsen Sea) of the Southern Ocean.docx |
topic_facet |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Antarctic toothfish feeding ecology Southern Ocean CCAMLR food web |
description |
Understanding feeding ecology is essential for ecosystem-based management. As dietary data can show differences depending on the spatiotemporal and ontogenetic aspects of the sample, the results should be derived based on various size classes and samples over a wide spatiotemporal range. Morphological analysis of the stomach contents of Dissostichus mawsoni, a piscivore, collected at depths of 603–2,113 m in subarea 88.3 during the Antarctic summer fishing seasons from 2016 to 2020 was used to assess the dietary composition according to the research block, fishing season, depth, and size. Here, we used 1,639 D. mawsoni specimens with a total length range of 44.5–189.0 cm. The dietary composition of D. mawsoni did not show significant differences by fishing season but differed with research block, depth, and size. Macrouridae dominated research blocks 88.3_1 and 88.3_3; Nototheniidae dominated research blocks 88.3_2 and 88.3_6; and Channichthyidae dominated research blocks 88.3_4 and 88.3_5. The proportion of Nototheniidae decreased as depth increased, whereas the consumption of Channichthyidae increased gradually with depth in research blocks 88.3_3 and 88.3_4. The proportion of Channichthyidae decreased as body size increased, whereas the consumption of Macrouridae increased gradually with body size in both blocks 88.3_3 and 88.3_4. During the study period, the dietary composition of D. mawsoni in both blocks 88.3_3 and 88.3_4 did not show significant temporal differences, suggesting that these data could be used as a baseline for identifying future environmental changes in the region. This study provides information on the relationships between various species and benthic fish fauna, which are essential for ecosystem-based management. |
format |
Dataset |
author |
Gi Chang Seong Sangdeok Chung Do-Gyun Kim Da Yeon Kang Suyeon Jin Gun Wook Baeck |
author_facet |
Gi Chang Seong Sangdeok Chung Do-Gyun Kim Da Yeon Kang Suyeon Jin Gun Wook Baeck |
author_sort |
Gi Chang Seong |
title |
Table_3_Feeding ecology of Antarctic toothfish, Dissostichus mawsoni in the subarea 88.3 (Bellingshausen Sea and eastern Amundsen Sea) of the Southern Ocean.docx |
title_short |
Table_3_Feeding ecology of Antarctic toothfish, Dissostichus mawsoni in the subarea 88.3 (Bellingshausen Sea and eastern Amundsen Sea) of the Southern Ocean.docx |
title_full |
Table_3_Feeding ecology of Antarctic toothfish, Dissostichus mawsoni in the subarea 88.3 (Bellingshausen Sea and eastern Amundsen Sea) of the Southern Ocean.docx |
title_fullStr |
Table_3_Feeding ecology of Antarctic toothfish, Dissostichus mawsoni in the subarea 88.3 (Bellingshausen Sea and eastern Amundsen Sea) of the Southern Ocean.docx |
title_full_unstemmed |
Table_3_Feeding ecology of Antarctic toothfish, Dissostichus mawsoni in the subarea 88.3 (Bellingshausen Sea and eastern Amundsen Sea) of the Southern Ocean.docx |
title_sort |
table_3_feeding ecology of antarctic toothfish, dissostichus mawsoni in the subarea 88.3 (bellingshausen sea and eastern amundsen sea) of the southern ocean.docx |
publishDate |
2023 |
url |
https://doi.org/10.3389/fmars.2023.1240569.s003 https://figshare.com/articles/dataset/Table_3_Feeding_ecology_of_Antarctic_toothfish_Dissostichus_mawsoni_in_the_subarea_88_3_Bellingshausen_Sea_and_eastern_Amundsen_Sea_of_the_Southern_Ocean_docx/24792159 |
geographic |
Antarctic Southern Ocean The Antarctic Amundsen Sea Bellingshausen Sea |
geographic_facet |
Antarctic Southern Ocean The Antarctic Amundsen Sea Bellingshausen Sea |
genre |
Amundsen Sea Antarc* Antarctic Antarctic Toothfish Bellingshausen Sea Southern Ocean |
genre_facet |
Amundsen Sea Antarc* Antarctic Antarctic Toothfish Bellingshausen Sea Southern Ocean |
op_relation |
doi:10.3389/fmars.2023.1240569.s003 https://figshare.com/articles/dataset/Table_3_Feeding_ecology_of_Antarctic_toothfish_Dissostichus_mawsoni_in_the_subarea_88_3_Bellingshausen_Sea_and_eastern_Amundsen_Sea_of_the_Southern_Ocean_docx/24792159 |
op_rights |
CC BY 4.0 |
op_doi |
https://doi.org/10.3389/fmars.2023.1240569.s003 |
_version_ |
1787430500599595008 |