The Aleutians and Beyond: Distribution, Size Composition, and Catch Dynamics of the Aleutian Skate Bathyraja aleutica across the North Pacific
The results of long-term (1948–2021) studies on the spatial and vertical distribution, dynamics of abundance, and size composition of the Aleutian skate Bathyraja aleutica in the North Pacific Ocean are presented. Maximum densities of this species were characteristic of the eastern Bering Sea slope,...
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ftmdpi:oai:mdpi.com:/2076-2615/12/24/3507/ 2023-08-20T04:05:35+02:00 The Aleutians and Beyond: Distribution, Size Composition, and Catch Dynamics of the Aleutian Skate Bathyraja aleutica across the North Pacific Igor V. Grigorov Kirill K. Kivva Alexei M. Orlov agris 2022-12-12 application/pdf https://doi.org/10.3390/ani12243507 EN eng Multidisciplinary Digital Publishing Institute Ecology and Conservation https://dx.doi.org/10.3390/ani12243507 https://creativecommons.org/licenses/by/4.0/ Animals; Volume 12; Issue 24; Pages: 3507 spatial distribution vertical distribution length body weight sex ratio condition factor Bering Sea Sea of Okhotsk Kuril Islands Aleutian Islands Gulf of Alaska British Columbia Text 2022 ftmdpi https://doi.org/10.3390/ani12243507 2023-08-01T07:45:41Z The results of long-term (1948–2021) studies on the spatial and vertical distribution, dynamics of abundance, and size composition of the Aleutian skate Bathyraja aleutica in the North Pacific Ocean are presented. Maximum densities of this species were characteristic of the eastern Bering Sea slope, off the central Aleutian Islands, consisting of the Pacific waters off southeastern Kamchatka and the northern Kurils, and northeastern Sakhalin. This species was most abundant at depths of 100–600 m; in the cold months, B. aleutica migrates to greater depths for over-wintering, and in warm months it feeds at shallower depths. Bathyraja aleutica was most common at the bottom, at temperatures around 3 °C. The total length of individuals ranged from 9.6–170 cm, with a predominance of skates with a length of 50–100 cm. Males did not differ significantly from females in body weight and length. The maximum values of the condition factor were typical for the autumn–winter period. Across years, there was an increase in Aleutian skate catch rates from the western Bering Sea and the Sea of Okhotsk, and a decrease in the Pacific waters off the Kuril Islands and Kamchatka, as well as in Alaskan waters. Text Bering Sea Kamchatka Sakhalin Alaska Aleutian Islands MDPI Open Access Publishing Bering Sea Gulf of Alaska Okhotsk Pacific Animals 12 24 3507 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
spatial distribution vertical distribution length body weight sex ratio condition factor Bering Sea Sea of Okhotsk Kuril Islands Aleutian Islands Gulf of Alaska British Columbia |
spellingShingle |
spatial distribution vertical distribution length body weight sex ratio condition factor Bering Sea Sea of Okhotsk Kuril Islands Aleutian Islands Gulf of Alaska British Columbia Igor V. Grigorov Kirill K. Kivva Alexei M. Orlov The Aleutians and Beyond: Distribution, Size Composition, and Catch Dynamics of the Aleutian Skate Bathyraja aleutica across the North Pacific |
topic_facet |
spatial distribution vertical distribution length body weight sex ratio condition factor Bering Sea Sea of Okhotsk Kuril Islands Aleutian Islands Gulf of Alaska British Columbia |
description |
The results of long-term (1948–2021) studies on the spatial and vertical distribution, dynamics of abundance, and size composition of the Aleutian skate Bathyraja aleutica in the North Pacific Ocean are presented. Maximum densities of this species were characteristic of the eastern Bering Sea slope, off the central Aleutian Islands, consisting of the Pacific waters off southeastern Kamchatka and the northern Kurils, and northeastern Sakhalin. This species was most abundant at depths of 100–600 m; in the cold months, B. aleutica migrates to greater depths for over-wintering, and in warm months it feeds at shallower depths. Bathyraja aleutica was most common at the bottom, at temperatures around 3 °C. The total length of individuals ranged from 9.6–170 cm, with a predominance of skates with a length of 50–100 cm. Males did not differ significantly from females in body weight and length. The maximum values of the condition factor were typical for the autumn–winter period. Across years, there was an increase in Aleutian skate catch rates from the western Bering Sea and the Sea of Okhotsk, and a decrease in the Pacific waters off the Kuril Islands and Kamchatka, as well as in Alaskan waters. |
format |
Text |
author |
Igor V. Grigorov Kirill K. Kivva Alexei M. Orlov |
author_facet |
Igor V. Grigorov Kirill K. Kivva Alexei M. Orlov |
author_sort |
Igor V. Grigorov |
title |
The Aleutians and Beyond: Distribution, Size Composition, and Catch Dynamics of the Aleutian Skate Bathyraja aleutica across the North Pacific |
title_short |
The Aleutians and Beyond: Distribution, Size Composition, and Catch Dynamics of the Aleutian Skate Bathyraja aleutica across the North Pacific |
title_full |
The Aleutians and Beyond: Distribution, Size Composition, and Catch Dynamics of the Aleutian Skate Bathyraja aleutica across the North Pacific |
title_fullStr |
The Aleutians and Beyond: Distribution, Size Composition, and Catch Dynamics of the Aleutian Skate Bathyraja aleutica across the North Pacific |
title_full_unstemmed |
The Aleutians and Beyond: Distribution, Size Composition, and Catch Dynamics of the Aleutian Skate Bathyraja aleutica across the North Pacific |
title_sort |
aleutians and beyond: distribution, size composition, and catch dynamics of the aleutian skate bathyraja aleutica across the north pacific |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/ani12243507 |
op_coverage |
agris |
geographic |
Bering Sea Gulf of Alaska Okhotsk Pacific |
geographic_facet |
Bering Sea Gulf of Alaska Okhotsk Pacific |
genre |
Bering Sea Kamchatka Sakhalin Alaska Aleutian Islands |
genre_facet |
Bering Sea Kamchatka Sakhalin Alaska Aleutian Islands |
op_source |
Animals; Volume 12; Issue 24; Pages: 3507 |
op_relation |
Ecology and Conservation https://dx.doi.org/10.3390/ani12243507 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/ani12243507 |
container_title |
Animals |
container_volume |
12 |
container_issue |
24 |
container_start_page |
3507 |
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1774716155355725824 |