Food habits of threadfin hakeling Laemonema longipes along the Pacific coast of northern Japan
Food habits of threadfin hakeling Laemonema longipes , the dominant demersal fish in the upper continental slope of the western sub-Arctic North Pacific, were described based upon >1400 specimens collected off north-eastern Honshu Island and south-eastern Hokkaido Island, Japan. Threadfin hakelin...
Published in: | Journal of the Marine Biological Association of the United Kingdom |
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Online Access: | http://dx.doi.org/10.1017/s0025315411000324 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315411000324 |
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crcambridgeupr:10.1017/s0025315411000324 2024-03-03T08:42:07+00:00 Food habits of threadfin hakeling Laemonema longipes along the Pacific coast of northern Japan Yamamura, O. Nobetsu, T. 2011 http://dx.doi.org/10.1017/s0025315411000324 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315411000324 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of the Marine Biological Association of the United Kingdom volume 92, issue 3, page 613-621 ISSN 0025-3154 1469-7769 Aquatic Science journal-article 2011 crcambridgeupr https://doi.org/10.1017/s0025315411000324 2024-02-08T08:27:39Z Food habits of threadfin hakeling Laemonema longipes , the dominant demersal fish in the upper continental slope of the western sub-Arctic North Pacific, were described based upon >1400 specimens collected off north-eastern Honshu Island and south-eastern Hokkaido Island, Japan. Threadfin hakeling depended exclusively on pelagic organisms including copepods Neocalanus cristatus, Euphausia pacifica , shrimps Sergestes similis , firefly squid Watasenia scintillans and myctophids Diaphus theta . Threadfin hakeling showed a clear size-dependent dietary variation, with mesozooplankton and shrimps being important for small- and medium-sized fish (≤400 mm standard length (SL)), and myctophids being important for large-sized fish (>400 mm SL). Since all of these prey undertake diurnal vertical migration, it was concluded that threadfin hakeling take an important role in capturing energy and materials transported from the epipelagic zone to the bathypelagic layer over the upper continental slope. Dietary variation among different areas, seasons and depths were also examined. Of these, areal difference was rather obscure reflecting common prey field in the Tohoku and Doto areas under the prevalence of the North Pacific Intermediate Water, whereas clear seasonal difference was found in the Doto area; the 0-group of walleye pollock Theragra chalcogramma was ingested only in the late summer and early autumn in this area. Article in Journal/Newspaper Arctic Theragra chalcogramma Copepods Cambridge University Press Arctic Pacific Journal of the Marine Biological Association of the United Kingdom 92 3 613 621 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
topic |
Aquatic Science |
spellingShingle |
Aquatic Science Yamamura, O. Nobetsu, T. Food habits of threadfin hakeling Laemonema longipes along the Pacific coast of northern Japan |
topic_facet |
Aquatic Science |
description |
Food habits of threadfin hakeling Laemonema longipes , the dominant demersal fish in the upper continental slope of the western sub-Arctic North Pacific, were described based upon >1400 specimens collected off north-eastern Honshu Island and south-eastern Hokkaido Island, Japan. Threadfin hakeling depended exclusively on pelagic organisms including copepods Neocalanus cristatus, Euphausia pacifica , shrimps Sergestes similis , firefly squid Watasenia scintillans and myctophids Diaphus theta . Threadfin hakeling showed a clear size-dependent dietary variation, with mesozooplankton and shrimps being important for small- and medium-sized fish (≤400 mm standard length (SL)), and myctophids being important for large-sized fish (>400 mm SL). Since all of these prey undertake diurnal vertical migration, it was concluded that threadfin hakeling take an important role in capturing energy and materials transported from the epipelagic zone to the bathypelagic layer over the upper continental slope. Dietary variation among different areas, seasons and depths were also examined. Of these, areal difference was rather obscure reflecting common prey field in the Tohoku and Doto areas under the prevalence of the North Pacific Intermediate Water, whereas clear seasonal difference was found in the Doto area; the 0-group of walleye pollock Theragra chalcogramma was ingested only in the late summer and early autumn in this area. |
format |
Article in Journal/Newspaper |
author |
Yamamura, O. Nobetsu, T. |
author_facet |
Yamamura, O. Nobetsu, T. |
author_sort |
Yamamura, O. |
title |
Food habits of threadfin hakeling Laemonema longipes along the Pacific coast of northern Japan |
title_short |
Food habits of threadfin hakeling Laemonema longipes along the Pacific coast of northern Japan |
title_full |
Food habits of threadfin hakeling Laemonema longipes along the Pacific coast of northern Japan |
title_fullStr |
Food habits of threadfin hakeling Laemonema longipes along the Pacific coast of northern Japan |
title_full_unstemmed |
Food habits of threadfin hakeling Laemonema longipes along the Pacific coast of northern Japan |
title_sort |
food habits of threadfin hakeling laemonema longipes along the pacific coast of northern japan |
publisher |
Cambridge University Press (CUP) |
publishDate |
2011 |
url |
http://dx.doi.org/10.1017/s0025315411000324 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315411000324 |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic Theragra chalcogramma Copepods |
genre_facet |
Arctic Theragra chalcogramma Copepods |
op_source |
Journal of the Marine Biological Association of the United Kingdom volume 92, issue 3, page 613-621 ISSN 0025-3154 1469-7769 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0025315411000324 |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
container_volume |
92 |
container_issue |
3 |
container_start_page |
613 |
op_container_end_page |
621 |
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1792497606296862720 |