Vertical distribution, population structure and developmental characteristics of the less studied but globally distributed mesopelagic copepod Scaphocalanus magnus in the western Arctic Ocean
Abstract Scaphocalanus magnus is a large copepod species with a worldwide distribution. Information on the ecology of this species is scarce. In this study, S. magnus was collected using vertically stratified net sampling from an ice station in the western Arctic Ocean over a year. The vertical dist...
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Online Access: | http://dx.doi.org/10.1093/plankt/fbaa021 http://academic.oup.com/plankt/article-pdf/42/3/368/33435020/fbaa021.pdf |
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croxfordunivpr:10.1093/plankt/fbaa021 2023-10-01T03:53:51+02:00 Vertical distribution, population structure and developmental characteristics of the less studied but globally distributed mesopelagic copepod Scaphocalanus magnus in the western Arctic Ocean Yamaguchi, Atsushi Ashjian, Carin J Campbell, Robert G Abe, Yoshiyuki National Science Foundation Grant-in-Aid for Scientific Research Japan Society for the Promotion of Science 2020 http://dx.doi.org/10.1093/plankt/fbaa021 http://academic.oup.com/plankt/article-pdf/42/3/368/33435020/fbaa021.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model Journal of Plankton Research volume 42, issue 3, page 368-377 ISSN 0142-7873 1464-3774 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2020 croxfordunivpr https://doi.org/10.1093/plankt/fbaa021 2023-09-08T10:48:32Z Abstract Scaphocalanus magnus is a large copepod species with a worldwide distribution. Information on the ecology of this species is scarce. In this study, S. magnus was collected using vertically stratified net sampling from an ice station in the western Arctic Ocean over a year. The vertical distribution differed between periods of polar night and midnight sun, with core depth distributions of 264–381 m for the polar night and 518–745 m for the midnight sun. The shallower distribution during the polar night may have resulted from the animals moving upwards to find sufficient food during the less productive season. The abundance of early copepodite stages showed clear seasonality. The C2 and C3 stages were abundant June–August and August–September, respectively. After C4, seasonality in abundance was not clear. For C4 and C5, body sizes and masses were greater for males than for females while the opposite was the case for C6. Adult males do not feed and thus have shorter life spans than females, skewing the adult sex ratio towards females. For these mesopelagic particle feeding copepods, a long residence time at C6F suggests that in a varying food environment, it is possible to wait to initiate reproduction until favourable food conditions occur. Article in Journal/Newspaper Arctic Arctic Ocean polar night Copepods midnight sun Oxford University Press (via Crossref) Arctic Arctic Ocean Journal of Plankton Research 42 3 368 377 |
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Open Polar |
collection |
Oxford University Press (via Crossref) |
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croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Yamaguchi, Atsushi Ashjian, Carin J Campbell, Robert G Abe, Yoshiyuki Vertical distribution, population structure and developmental characteristics of the less studied but globally distributed mesopelagic copepod Scaphocalanus magnus in the western Arctic Ocean |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Abstract Scaphocalanus magnus is a large copepod species with a worldwide distribution. Information on the ecology of this species is scarce. In this study, S. magnus was collected using vertically stratified net sampling from an ice station in the western Arctic Ocean over a year. The vertical distribution differed between periods of polar night and midnight sun, with core depth distributions of 264–381 m for the polar night and 518–745 m for the midnight sun. The shallower distribution during the polar night may have resulted from the animals moving upwards to find sufficient food during the less productive season. The abundance of early copepodite stages showed clear seasonality. The C2 and C3 stages were abundant June–August and August–September, respectively. After C4, seasonality in abundance was not clear. For C4 and C5, body sizes and masses were greater for males than for females while the opposite was the case for C6. Adult males do not feed and thus have shorter life spans than females, skewing the adult sex ratio towards females. For these mesopelagic particle feeding copepods, a long residence time at C6F suggests that in a varying food environment, it is possible to wait to initiate reproduction until favourable food conditions occur. |
author2 |
National Science Foundation Grant-in-Aid for Scientific Research Japan Society for the Promotion of Science |
format |
Article in Journal/Newspaper |
author |
Yamaguchi, Atsushi Ashjian, Carin J Campbell, Robert G Abe, Yoshiyuki |
author_facet |
Yamaguchi, Atsushi Ashjian, Carin J Campbell, Robert G Abe, Yoshiyuki |
author_sort |
Yamaguchi, Atsushi |
title |
Vertical distribution, population structure and developmental characteristics of the less studied but globally distributed mesopelagic copepod Scaphocalanus magnus in the western Arctic Ocean |
title_short |
Vertical distribution, population structure and developmental characteristics of the less studied but globally distributed mesopelagic copepod Scaphocalanus magnus in the western Arctic Ocean |
title_full |
Vertical distribution, population structure and developmental characteristics of the less studied but globally distributed mesopelagic copepod Scaphocalanus magnus in the western Arctic Ocean |
title_fullStr |
Vertical distribution, population structure and developmental characteristics of the less studied but globally distributed mesopelagic copepod Scaphocalanus magnus in the western Arctic Ocean |
title_full_unstemmed |
Vertical distribution, population structure and developmental characteristics of the less studied but globally distributed mesopelagic copepod Scaphocalanus magnus in the western Arctic Ocean |
title_sort |
vertical distribution, population structure and developmental characteristics of the less studied but globally distributed mesopelagic copepod scaphocalanus magnus in the western arctic ocean |
publisher |
Oxford University Press (OUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1093/plankt/fbaa021 http://academic.oup.com/plankt/article-pdf/42/3/368/33435020/fbaa021.pdf |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean polar night Copepods midnight sun |
genre_facet |
Arctic Arctic Ocean polar night Copepods midnight sun |
op_source |
Journal of Plankton Research volume 42, issue 3, page 368-377 ISSN 0142-7873 1464-3774 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/plankt/fbaa021 |
container_title |
Journal of Plankton Research |
container_volume |
42 |
container_issue |
3 |
container_start_page |
368 |
op_container_end_page |
377 |
_version_ |
1778520863151226880 |