VERTICAL DISTRIBUTION OF OITHONA SIMILIS AND ONCAEA CURVATA (CYCLOPOIDA, COPEPODA) UNDER SEA ICE NEAR SYOWA STATION IN THE ANTARCTIC WINTER (18th Symposium on Polar Biology)

Vertical distributions of two small cyclopoid copepods, Oithona similis and Oncaea curvata, were investigated under fast ice near Syowa Station on 1-2 July in continuous darkness during the Antarctic winter. All developmental stages from copepodite stage I (CI) to adults of two species occurred homo...

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Bibliographic Details
Main Authors: タニムラ アツシ, ホシノ カズヤ, ノナカ ユウキ, ミヤモト ヨシノリ, ハットリ ヒロシ, Atsushi TANIMURA, Kazuya HOSHINO, Yuuki NONAKA, Yoshinori MIYAMOTO, Hiroshi HATTORI
Format: Report
Language:English
Published: Proceeding 1997
Subjects:
Antarctic
The Antarctic
Syowa Station
Antarc*
Polar Biology
Proceedings of the NIPR Symposium on Polar Biology
Sea ice
Copepods
Online Access:https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5344
http://id.nii.ac.jp/1291/00005344/
https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5344&item_no=1&attribute_id=18&file_no=1
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Summary:Vertical distributions of two small cyclopoid copepods, Oithona similis and Oncaea curvata, were investigated under fast ice near Syowa Station on 1-2 July in continuous darkness during the Antarctic winter. All developmental stages from copepodite stage I (CI) to adults of two species occurred homogeneously throughout the water column; and no marked diel vertical migration was observed. Their homogeneous distribution pattern and non-migrating behavior suggest some selective advantages for surviving in the Antarctic winter: reduction of the energy cost, effective utilization of the limited food resources, and minimizing the population predation.

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