Distribution, Ecology and Size Composition of the White-Blotched Skate Bathyraja maculata (Arhynchobatidae) in the Northeastern Sea of Okhotsk during the Hydrological Summer

— Based on the materials of bottom trawl surveys, the data are presented on the features of distribution, thermal conditions of habitats and the size composition of the white-blotched skate Bathyraja maculata in the northeastern Sea of Okhotsk during the hydrological summer of 1998–2019. The main ag...

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Bibliographic Details
Published in:Journal of ichthyology 2023-12, Vol.63 (6), p.1092-1101
Main Authors: Kurbanov, Yu. K., Vinogradskaya, A. V.
Format: Article
Language:English
Subjects:
Bathyraja maculata
Benthos collecting devices
Biomedical and Life Sciences
Bottom trawling
Continental slope
Ecological aggregations
Habitats
Hydrology
Juveniles
Life Sciences
Relative abundance
Size distribution
Spawning
Spawning grounds
Summer
Vertical distribution
Zoology
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Summary:— Based on the materials of bottom trawl surveys, the data are presented on the features of distribution, thermal conditions of habitats and the size composition of the white-blotched skate Bathyraja maculata in the northeastern Sea of Okhotsk during the hydrological summer of 1998–2019. The main aggregations of the species were found in the area of the eastern slope of the TINRO depression north of 56° N. The vertical distribution area covered depths of 60–874 m. The temperature range of the near-bottom layer of water at which the species was encountered was 0–3.0°С. High values of relative abundance were typical for depths of 401–500 and 601–700 m, for relative biomass, up to 500 m. Juveniles of white-blotched skate were found near the lower boundary of the habitat (> 600 m), and large individuals inhabited the shelf and adjacent areas of the continental slope. Presumably, one of the spawning grounds of the species is located on the eastern slope of the TINRO depression.
ISSN:0032-9452
1555-6425
DOI:10.1134/S0032945223050053