Fish species identification and composition across the Scotia Sea during austral summer 2019
Abstract An assessment of the fish species composition was conducted during the austral summer of 2019 in the Southwest Atlantic sector of the Southern Ocean (FAO Fishing Areas 48.1–48.4). Samples were collected from stations systematically spaced across the Scotia Sea region using a fine meshed pel...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-05-01
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| Series: | Scientific Data |
| Online Access: | https://doi.org/10.1038/s41597-025-05217-z |
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| author | Tor Knutsen Merete Kvalsund Rupert Wienerroither Kjell Bakkeplass Julio Erices Nicolas Straube Monica Bente Martinussen Alejandro Mateos-Rivera Alina Rey Jon Rønning Georg Skaret Bjørn Arne Krafft |
| author_facet | Tor Knutsen Merete Kvalsund Rupert Wienerroither Kjell Bakkeplass Julio Erices Nicolas Straube Monica Bente Martinussen Alejandro Mateos-Rivera Alina Rey Jon Rønning Georg Skaret Bjørn Arne Krafft |
| author_sort | Tor Knutsen |
| collection | DOAJ |
| description | Abstract An assessment of the fish species composition was conducted during the austral summer of 2019 in the Southwest Atlantic sector of the Southern Ocean (FAO Fishing Areas 48.1–48.4). Samples were collected from stations systematically spaced across the Scotia Sea region using a fine meshed pelagic trawl (“Macroplankton trawl”) towed through the ~200-0 m depth stratum (n = 127 hauls) and a coarser meshed and larger pelagic trawl (“Harstad trawl”) hauled from ~1000-0 m (n = 8 hauls), particularly suitable for catching somewhat larger sized specimens. In total, 56 fish taxa were identified from both traditional taxonomic visual and molecular identification methods. The dominating taxa, both in numbers and catch weight across the study area, were the two lanternfish species Electrona antarctica and Gymnoscopelus braueri (Myctophidae), together with the deep-sea smelt genus Bathylagus (Bathylagidae). The given description of taxonomic identification features including images of type specimens presented, constitutes a high-resolution and comprehensive encyclopedia that will facilitate future assessment of fish communities and interspecific relationships. |
| format | Article |
| id | doaj-art-099ec94df7a440e694ee9228e2728a69 |
| institution | OA Journals |
| issn | 2052-4463 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Data |
| spelling | doaj-art-099ec94df7a440e694ee9228e2728a692025-08-20T02:00:02ZengNature PortfolioScientific Data2052-44632025-05-011211710.1038/s41597-025-05217-zFish species identification and composition across the Scotia Sea during austral summer 2019Tor Knutsen0Merete Kvalsund1Rupert Wienerroither2Kjell Bakkeplass3Julio Erices4Nicolas Straube5Monica Bente Martinussen6Alejandro Mateos-Rivera7Alina Rey8Jon Rønning9Georg Skaret10Bjørn Arne Krafft11Institute of Marine ResearchInstitute of Marine ResearchInstitute of Marine ResearchInstitute of Marine ResearchInstitute of Marine ResearchDepartment of Natural History, University Museum of BergenInstitute of Marine ResearchInstitute of Marine ResearchInstitute of Marine ResearchInstitute of Marine ResearchInstitute of Marine ResearchInstitute of Marine ResearchAbstract An assessment of the fish species composition was conducted during the austral summer of 2019 in the Southwest Atlantic sector of the Southern Ocean (FAO Fishing Areas 48.1–48.4). Samples were collected from stations systematically spaced across the Scotia Sea region using a fine meshed pelagic trawl (“Macroplankton trawl”) towed through the ~200-0 m depth stratum (n = 127 hauls) and a coarser meshed and larger pelagic trawl (“Harstad trawl”) hauled from ~1000-0 m (n = 8 hauls), particularly suitable for catching somewhat larger sized specimens. In total, 56 fish taxa were identified from both traditional taxonomic visual and molecular identification methods. The dominating taxa, both in numbers and catch weight across the study area, were the two lanternfish species Electrona antarctica and Gymnoscopelus braueri (Myctophidae), together with the deep-sea smelt genus Bathylagus (Bathylagidae). The given description of taxonomic identification features including images of type specimens presented, constitutes a high-resolution and comprehensive encyclopedia that will facilitate future assessment of fish communities and interspecific relationships.https://doi.org/10.1038/s41597-025-05217-z |
| spellingShingle | Tor Knutsen Merete Kvalsund Rupert Wienerroither Kjell Bakkeplass Julio Erices Nicolas Straube Monica Bente Martinussen Alejandro Mateos-Rivera Alina Rey Jon Rønning Georg Skaret Bjørn Arne Krafft Fish species identification and composition across the Scotia Sea during austral summer 2019 Scientific Data |
| title | Fish species identification and composition across the Scotia Sea during austral summer 2019 |
| title_full | Fish species identification and composition across the Scotia Sea during austral summer 2019 |
| title_fullStr | Fish species identification and composition across the Scotia Sea during austral summer 2019 |
| title_full_unstemmed | Fish species identification and composition across the Scotia Sea during austral summer 2019 |
| title_short | Fish species identification and composition across the Scotia Sea during austral summer 2019 |
| title_sort | fish species identification and composition across the scotia sea during austral summer 2019 |
| url | https://doi.org/10.1038/s41597-025-05217-z |
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