East-west differences in population structure and vertical distribution of copepods along 47°N in the subarctic Pacific in June 2009
Stratified zooplankton sampling was conducted in the subarctic Pacific in June 2009 at four stations along 47°N from 0 to 3,000 m depth to evaluate longitudinal changes in population structure and vertical distribution of the dominant copepod species. At the westernmost station (160°E), the populati...
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Online Access: | http://hdl.handle.net/2115/54055 https://doi.org/10.3800/pbr.8.116 |
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/54055 2023-05-15T18:28:12+02:00 East-west differences in population structure and vertical distribution of copepods along 47°N in the subarctic Pacific in June 2009 Yamaguchi, Atsushi Homma, Tomoe Saito, Rui Matsuno, Kohei Ueno, Hiromichi Hirawake, Toru Imai, Ichiro http://hdl.handle.net/2115/54055 https://doi.org/10.3800/pbr.8.116 eng eng Plankton Society of Japan : Japanese Association of Benthology http://www.plankton.jp/PBR/index.html http://hdl.handle.net/2115/54055 Plankton & benthos research : a joint journal of the Plankton Society of Japan & the Japanese Association of Benthology, 8(3): 116-123 http://dx.doi.org/10.3800/pbr.8.116 © 2013 The Plankton Society of Japan Eucalanus Lipid accumulation Metridia Neocalanus Ontogenetic vertical distribution 468 article fthokunivhus https://doi.org/10.3800/pbr.8.116 2022-11-18T01:02:57Z Stratified zooplankton sampling was conducted in the subarctic Pacific in June 2009 at four stations along 47°N from 0 to 3,000 m depth to evaluate longitudinal changes in population structure and vertical distribution of the dominant copepod species. At the westernmost station (160°E), the population structure of Eucalanus bungii and Metridia pacifica was dominated by early copepodid stages. In E. bungii, nauplii were abundant and adult females had developed ovaries at 160°E, while at the three stations to the east (167°E, 174°E and 179°W), no E. bungii nauplii were collected, and the resting stages were dominant. This suggests the species was reproducing near 160°E and in diapause in the east. In all three Neocalanus species analyzed (N. cristatus, N. flemingeri and N. plumchrus), late copepodid stages were dominant at the eastern three stations. Lipid accumulation in the fifth copepodid stage of Neocalanus spp. was greater in the west than in the east. This probably resulted from better food conditions and lower temperatures in the west, where copepods could consume more food during development than in the east. Article in Journal/Newspaper Subarctic Copepods Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Pacific Plankton and Benthos Research 8 3 116 123 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
Eucalanus Lipid accumulation Metridia Neocalanus Ontogenetic vertical distribution 468 |
spellingShingle |
Eucalanus Lipid accumulation Metridia Neocalanus Ontogenetic vertical distribution 468 Yamaguchi, Atsushi Homma, Tomoe Saito, Rui Matsuno, Kohei Ueno, Hiromichi Hirawake, Toru Imai, Ichiro East-west differences in population structure and vertical distribution of copepods along 47°N in the subarctic Pacific in June 2009 |
topic_facet |
Eucalanus Lipid accumulation Metridia Neocalanus Ontogenetic vertical distribution 468 |
description |
Stratified zooplankton sampling was conducted in the subarctic Pacific in June 2009 at four stations along 47°N from 0 to 3,000 m depth to evaluate longitudinal changes in population structure and vertical distribution of the dominant copepod species. At the westernmost station (160°E), the population structure of Eucalanus bungii and Metridia pacifica was dominated by early copepodid stages. In E. bungii, nauplii were abundant and adult females had developed ovaries at 160°E, while at the three stations to the east (167°E, 174°E and 179°W), no E. bungii nauplii were collected, and the resting stages were dominant. This suggests the species was reproducing near 160°E and in diapause in the east. In all three Neocalanus species analyzed (N. cristatus, N. flemingeri and N. plumchrus), late copepodid stages were dominant at the eastern three stations. Lipid accumulation in the fifth copepodid stage of Neocalanus spp. was greater in the west than in the east. This probably resulted from better food conditions and lower temperatures in the west, where copepods could consume more food during development than in the east. |
format |
Article in Journal/Newspaper |
author |
Yamaguchi, Atsushi Homma, Tomoe Saito, Rui Matsuno, Kohei Ueno, Hiromichi Hirawake, Toru Imai, Ichiro |
author_facet |
Yamaguchi, Atsushi Homma, Tomoe Saito, Rui Matsuno, Kohei Ueno, Hiromichi Hirawake, Toru Imai, Ichiro |
author_sort |
Yamaguchi, Atsushi |
title |
East-west differences in population structure and vertical distribution of copepods along 47°N in the subarctic Pacific in June 2009 |
title_short |
East-west differences in population structure and vertical distribution of copepods along 47°N in the subarctic Pacific in June 2009 |
title_full |
East-west differences in population structure and vertical distribution of copepods along 47°N in the subarctic Pacific in June 2009 |
title_fullStr |
East-west differences in population structure and vertical distribution of copepods along 47°N in the subarctic Pacific in June 2009 |
title_full_unstemmed |
East-west differences in population structure and vertical distribution of copepods along 47°N in the subarctic Pacific in June 2009 |
title_sort |
east-west differences in population structure and vertical distribution of copepods along 47°n in the subarctic pacific in june 2009 |
publisher |
Plankton Society of Japan : Japanese Association of Benthology |
url |
http://hdl.handle.net/2115/54055 https://doi.org/10.3800/pbr.8.116 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Subarctic Copepods |
genre_facet |
Subarctic Copepods |
op_relation |
http://www.plankton.jp/PBR/index.html http://hdl.handle.net/2115/54055 Plankton & benthos research : a joint journal of the Plankton Society of Japan & the Japanese Association of Benthology, 8(3): 116-123 http://dx.doi.org/10.3800/pbr.8.116 |
op_rights |
© 2013 The Plankton Society of Japan |
op_doi |
https://doi.org/10.3800/pbr.8.116 |
container_title |
Plankton and Benthos Research |
container_volume |
8 |
container_issue |
3 |
container_start_page |
116 |
op_container_end_page |
123 |
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1766210571741429760 |