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  1. 050 理学部
  2. 20 紀要
  3. 02 Science reports of Niigata University. (Geology)
  4. No.20
  1. 0 資料タイプ別
  2. 03 紀要論文

Shell variability of Pseudocubus obeliscus Haeckel in the early autumn radiolarian fauna off Tassha, Sado Island, central Japan

http://hdl.handle.net/10191/2143
http://hdl.handle.net/10191/2143
bfabad67-b270-49d5-932f-a22f79fdbb5d
名前 / ファイル ライセンス アクション
20_29-45.pdf 20_29-45.pdf (4.7 MB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2017-09-04
タイトル
タイトル Shell variability of Pseudocubus obeliscus Haeckel in the early autumn radiolarian fauna off Tassha, Sado Island, central Japan
タイトル
言語 en
タイトル Shell variability of Pseudocubus obeliscus Haeckel in the early autumn radiolarian fauna off Tassha, Sado Island, central Japan
言語
言語 eng
キーワード
主題Scheme Other
主題 Pseudocubus obeliscus
キーワード
主題Scheme Other
主題 Radiolaria
キーワード
主題Scheme Other
主題 Sado Island
キーワード
主題Scheme Other
主題 Sea of Japan
キーワード
主題Scheme Other
主題 shell variability
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
著者 Kurihara, Toshiyuki

× Kurihara, Toshiyuki

WEKO 54457

Kurihara, Toshiyuki

Search repository
Matsuoka, Atsushi

× Matsuoka, Atsushi

WEKO 54458

Matsuoka, Atsushi

Search repository
抄録
内容記述タイプ Abstract
内容記述 Shell variability of Pseudocubus obeliscus Haeckel within the early autumn radiolarian fauna collected from the Sea of Japan, off Tassha, Sado Island in 2001 is demonstrated based on detailed scanning electron microscopic observations and comparisons among morphologically varied specimens. Pseudocubus obeliscus has an inverted truncated-pyramidal skeleton consisting of an initial spicule, rings formed by several arches, columellae, and other secondary spines. The initial spicule is comprised of a median bar, an apical spine, a dorsal spine, two primary lateral spines, and an axial spine. The ventral spine and secondary lateral spines are absent. Comparative observations of morphologically varied specimens with reference to highly symmetrical, well-regulated specimens show that morphologic variation in P. obeliscus is caused by the transformation of angles between columellae and a primary ring, shape of the primary ring and columellae, and their combination. In addition, some secondary arches are formed for rebuilding a distorted pyramidal skeleton. Therefore, it is concluded that shell variability is expressed by the skeletal instability of some specific parts and self-organizing formation of secondary arches.
書誌情報 Science reports of Niigata University. (Geology)
en : Science reports of Niigata University. (Geology)

巻 20, p. 29-45, 発行日 2005-03
出版者
出版者 新潟大学理学部
ISSN
収録物識別子タイプ ISSN
収録物識別子 13491237
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AA11436808
著者版フラグ
値 publisher
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