Comparative morphology of the ossicles of ophiuroids using micro-computed tomography: Which ossicles are morphologically conservative in evolution?
| Project/Area Number |
17K07549
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Biodiversity/Systematics
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| Research Institution | National Museum of Nature and Science, Tokyo |
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Principal Investigator |
Fujita Toshihiko 独立行政法人国立科学博物館, 動物研究部, グループ長 (70222263)
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| Co-Investigator(Kenkyū-buntansha) |
岡西 政典 東京大学, 大学院理学系研究科(理学部), 特任助教 (70639278)
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 系統 / 分類 / 進化 / クモヒトデ類 / 形質 / マイクロCT / 非破壊 / 保存性 / クモヒトデ綱 / 分子系統 / 比較形態 / 進化的保存性 |
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| Outline of Final Research Achievements |
Ophiuroids (Echinodermata) has a skeleton of many kinds of numerous ossicles supporting their body. Compared to soft tissue, the form and arrangement of hard ossicles have been intensely used for the conventional ophiuroid classification. The detailed morphology of many ossicles including internal ones which have been scarcely observed was examined by using micro CT, and some ossicles were newly proved available as taxonomical features at each taxonomic rank from species to higher taxa. Based on the molecular phylogeny, these ossicles will be re-evaluated as taxonomic characteristics in terms of how conservative they are in the lineages of ophiuroids.
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| Academic Significance and Societal Importance of the Research Achievements |
生物は進化によって，様々な形態を生み出してきた．形態がそれぞれの系統でどのように変化したのかを追うことは，進化を理解する上での重要な課題である．様々な系統において，どのような形質でも等しく変化するわけではなく，発生における条件や機能など多くの要素に関連して，形質の変化のしやすさが異なっていると想定される．系統に基づく分類体系と分類形質を対照させた分析から，各形質の進化における保存性の差異を明らかにすることで，生物進化の理解を進めることができる．
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Report
(4 results)
Research Products
(52 results)
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[Journal Article] A new cryptic species of Asteronyx Mueller and Troschel, 1842 (Echinodermata: Ophiuroidea), based on molecular phylogeny and morphology, from off Pacific Coast of Japan2018
Author(s)
Okanishi, M, Sentoku, A,, Martynov, A, Fujita, T.
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Journal Title
Zoologischer Anzeiger
Volume: 274
Pages: 14-33
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] Mig-Seq derived SNP markers revealed high dispersal of the jellyfish riding ophiuroid, Ophiocnemis marmorata2019
Author(s)
Hiruta, S.F., Y. Kondo, J. Nishikawa, F. Md. Yusoff, E. B. Metillo, H. Pagliawan, K. Srinui, S. Ohtsuka, T. Fujita
Organizer
10th European Conference on Echinoderms
Related Report
Int'l Joint Research
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[Presentation] Producing process of trace fossil Asteriacites; burial experiment of extant asteroid and ophiuroid2018
Author(s)
Ishida, Y., Kohtsuka, H., Manabe, M., Ohara, M., Kiyomoto, M. and Fujita, T.
Organizer
16th International Echinoderm Conference
Related Report
Int'l Joint Research
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[Presentation] Population structure of the "hitch-hike" ophiuroid, Ophiocnemis marmorata, associated with jellyfish2018
Author(s)
Hiruta, S.F., Kondo, Y., Nishikawa, J., Yusoff, F.Md., Metillo, E.B., Pagliawan, H., Srinui, K., Ohtsuka, S. and Fujita, T.
Organizer
16th International Echinoderm Conference
Related Report
Int'l Joint Research
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[Book] 動物学の百科事典2018
Author(s)
公益社団法人日本動物学会
Total Pages
800
Publisher
丸善出版
ISBN
9784621303092
Related Report
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