Knutsen Tor, Kvalsund Merete, Wienerroither Rupert, Bakkeplass Kjell, Erices Julio, Straube Nicolas, Martinussen Monica Bente, Mateos-Rivera Alejandro, Rey Alina, Rønning Jon, Skaret Georg, Krafft Bjørn Arne
Institute of Marine Research, Bergen, Norway.
Department of Natural History, University Museum of Bergen, Bergen, Norway.
Sci Data. 2025 May 30;12(1):916. doi: 10.1038/s41597-025-05217-z.
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.
2019年南半球夏季，在南大洋西南大西洋海域（粮农组织渔区48.1 - 48.4）对鱼类物种组成进行了评估。样本是从斯科舍海区域系统分布的站点采集的，使用细网中上层拖网（“大型浮游生物拖网”）在约200 - 0米深度水层拖网（n = 127次拖网），以及从约1000 - 0米拖网的较粗网目和较大的中上层拖网（“哈斯塔德拖网”）（n = 8次拖网），后者特别适合捕捞体型稍大的标本。通过传统分类学视觉和分子鉴定方法，总共鉴定出56个鱼类分类单元。在整个研究区域，无论是数量还是捕捞重量方面占主导地位的分类单元是两种灯笼鱼南极电灯鱼和布氏裸灯鱼（灯笼鱼科），以及深海胡瓜鱼属（深海胡瓜鱼科）。给出的分类鉴定特征描述，包括所呈现的模式标本图像，构成了一部高分辨率的综合百科全书，将有助于未来对鱼类群落和种间关系的评估。
