海棲哺乳類の海洋環境適応と生存戦略の変遷史

• Project/Area Number: 22KJ2368
• Project/Area Number (Other): 19J00741 (2019-2022)
• Research Category: Grant-in-Aid for JSPS Fellows
• Allocation Type: Multi-year Fund (2023); Single-year Grants (2019-2022)
• Section: 国内
• Review Section: Basic Section 17050:Biogeosciences-related
• Research Institution: Kyushu University
• Principal Investigator: 松井 久美子 九州大学, 総合研究博物館, 特別研究員(CPD)
• Project Period (FY): 2023-03-08 – 2024-03-31
• Project Status: Completed (Fiscal Year 2023)
• Budget Amount: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2023: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 化石 / 海棲哺乳類 / 形態 / 進化 / 古生物学 / 古脊椎動物学 / 絶滅 / CT / 3D

Outline of Research at the Start

海棲哺乳類は海は浅海域から深海域，北極域から南極域まで世界中の海に進出している海棲哺乳類であるが，海洋進出初期には比較的限られた地域に生息していたことや，現在と非常に大きく異なった形態を持っていたことが知られている．現在見られる多様な形態，生息域を獲得するまでには複数回の多様化と進出海域拡大イベントが起きている．これまで，個々の分類群については多様化・海域拡大についての研究が多く行われてきているものの，海棲哺乳類全体としての多様化・海域拡大についての知見は極めて少ない．そこで，海棲哺乳類の海洋進出を化石からその進化・絶滅・多様化の要因を明らかにする.

Outline of Annual Research Achievements

世界中の海に進出している海棲哺乳類であるが，その海洋進出は異なる時代にまたがって数回起き，進出初期には現在と大きく異なった形態を持っていたが，その後，各系統で独自に形態を多様化させると同時に，生息域を拡大させたことが知られている.これまで，個別の分類群について多様化・海域拡大を議論した研究は少なくないが，異なる系統を含む海棲哺乳類の全体像を同一の視点から比較検討する試みはほとんどなされていない.そこで，特に頭蓋骨内に残された脳神経・感覚器形態など，化石から抽出可能な生息環境を反映する全ての特徴についてCTスキャン等を用いて精査し，そこから海棲哺乳類の多様化・生息海域拡大の要因を明らかにするために研究を遂行している.

今年度も主にスミソニアン国立自然史博物館を研究の拠点として研究を遂行した。それに加え，California州Orenge郡から見つかっている超大型の海棲哺乳類の化石についても併せて研究を遂行した．

本年度は本研究課題の最終年度であったため，学会発表および研究のまとめに重点を置き，研究を遂行した．

Research Products

• [Int'l Joint Research] Smithsonian Institution/University of California, Santa Cruz/University of Washington(米国)
• [Int'l Joint Research] GeoSalazar(チリ)
• [Int'l Joint Research] 東京大学/国立科学博物館/北九州市立自然史歴史博物館(日本)
• [Int'l Joint Research] Institut Catal de Paleontologia(スペイン)
• [Int'l Joint Research] University of Oslo(ノルウェー)
• [Int'l Joint Research] Smithsonian Institution/University of California, Santa Cruz(米国)
• [Int'l Joint Research] New York Institute of Technology/Haward University/Michigan University(米国)
• [Journal Article] New evidence for the antiquity of Desmostylus (Desmostylia) from the Skooner Gulch Formation of California (2023)
  • Author(s): Matsui Kumiko、Pyenson Nicholas D.
  • Journal Title: Royal Society Open Science Volume: 10 Issue: 6 Pages: 221648-221648
  • DOI: 10.1098/rsos.221648
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] 淡水から深海まで:海棲哺乳類の進化と海棲適応 (2023)
  • Author(s): 松井久美子
  • Journal Title: 細胞 Volume: 55 Pages: 1173-1176
  • Peer Reviewed
• [Journal Article] 哺乳類の歯を用いた研究活動体験型ワークショップの試行 (2023)
  • Author(s): 松井久美子
  • Journal Title: むかわ町穂別博物館研究報告 Volume: 38 Pages: 1-10
  • Peer Reviewed / Open Access
• [Journal Article] Museum Exhibitions of Fossil Specimens Into Commercial Products: Unexpected Outflow of 3D Models due to Unwritten Image Policies (2022)
  • Author(s): Matsui Kumiko、Kimura Yuri
  • Journal Title: Frontiers in Earth Science Volume: 10 Pages: 874736-874736
  • DOI: 10.3389/feart.2022.874736
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] New data from the first discovered paleoparadoxiid (Desmostylia) specimen shed light into the morphological variation of the genus Neoparadoxia (2022)
  • Author(s): Matsui Kumiko、Valenzuela-Toro Ana M.、Pyenson Nicholas D.
  • Journal Title: Scientific Reports Volume: 12 Issue: 1 Pages: 14246-14246
  • DOI: 10.1038/s41598-022-18295-5
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A “mammalian-like” pycnodont fish: Independent acquisition of thecodont implantation, true vertical replacement, and carnassial dentitions in carnivorous mammals and a peculiar group of pycnodont fish (2022)
  • Author(s): Matsui, K. and Y. Kimura
  • Journal Title: Life Volume: 12 Issue: 2 Pages: 250-250
  • DOI: 10.3390/life12020250
  • Peer Reviewed / Open Access
• [Journal Article] Museum exhibitions of fossils into commercial products: Unexpected outflow of 3D models due to unwritten image policies into commercial products (2022)
  • Author(s): Matsui Kumiko、Kimura Yuri
  • Journal Title: EarthArXiv Volume: -
  • DOI: 10.31223/x5zw5z
  • Open Access
• [Journal Article] Proceedings (2021)
  • Author(s): 松井 久美子
  • Journal Title: Fossils Volume: 109 Issue: 0 Pages: 29-46
  • DOI: 10.14825/kaseki.109.0_29
  • NAID: 130008026171
  • ISSN: 0022-9202, 2424-2632
  • Year and Date: 2021-03-31
  • Peer Reviewed / Open Access
• [Journal Article] New record of a rostrum of waterbird (Aves, Suliformes) from the Oligocene of Ashiya Group in Ainoshima Island, Kyushu, Japan (2021)
  • Author(s): Soichiro Kawabe, Yusuke Ando, Shigenori Kawano, Kumiko Matsui
  • Journal Title: Bulletin of Kitakyushu Museum of Natural History and Human. Series A Volume: 19 Pages: 35-39
  • Peer Reviewed / Open Access
• [Journal Article] Independent Acquisition of Carnassial Teeth in Fishes and Mammals (2021)
  • Author(s): Matsui Kumiko、Kimura Yuri
  • Journal Title: Research Square Volume: -
  • DOI: 10.21203/rs.3.rs-1094239/v1
  • Open Access
• [Journal Article] Interacting with the inaccessible: utilization of multimedia-based visual contents of Japan’s National Monument, the Taniwhasaurus mikasaensis (Mosasauridae) holotype for educational workshops at Mikasa City Museum (2020)
  • Author(s): 唐沢 與希、松井 久美子
  • Journal Title: Fossils Volume: 108 Issue: 0 Pages: 3-10
  • DOI: 10.14825/kaseki.108.0_3
  • NAID: 130007927015
  • ISSN: 0022-9202, 2424-2632
  • Year and Date: 2020-09-30
  • Peer Reviewed / Open Access
• [Journal Article] Proceedings (2020)
  • Author(s): 松井久美子，前田晴良
  • Journal Title: Fossils Volume: 108 Issue: 0 Pages: 42-64
  • DOI: 10.14825/kaseki.108.0_42
  • NAID: 130007927013
  • ISSN: 0022-9202, 2424-2632
  • Year and Date: 2020-09-30
  • Peer Reviewed / Open Access
• [Journal Article] 3D models related to the publication: Interacting with the inaccessible: utilization of multimedia-based visual contents of Japan's National Monument, the Taniwhasaurus mikasaensis (Mosasauridae) holotype for educational workshops at Mikasa City Museum (2020)
  • Author(s): Matsui Kumiko、Karasawa Tomoki
  • Journal Title: MorphoMuseuM Volume: 6 Issue: 5 Pages: e106-e106
  • DOI: 10.18563/journal.m3.106
  • Peer Reviewed / Open Access
• [Journal Article] Touch national monument: web-based AR application of Taniwhasaurus mikasaensis (2020)
  • Author(s): Kumiko Matsui, Karasawa Tomiki
  • Journal Title: ESSOAr Volume: -
  • DOI: 10.1002/essoar.10504144.1
  • Open Access
• [Journal Article] Life appearances of Desmostylia using a three-dimensional computer graphics (3D CG) (2019)
  • Author(s): 新村 龍也、松井 久美子
  • Journal Title: Fossils Volume: 106 Issue: 0 Pages: 1-2
  • DOI: 10.14825/kaseki.106.0_1
  • NAID: 130007733128
  • ISSN: 0022-9202, 2424-2632
  • Year and Date: 2019-09-30
  • Peer Reviewed / Open Access
• [Journal Article] The phylogeny of desmostylians revisited: proposal of new clades based on robust phylogenetic hypotheses (2019)
  • Author(s): Matsui Kumiko、Tsuihiji Takanobu
  • Journal Title: PeerJ Volume: 7 Pages: e7430-e7430
  • DOI: 10.7717/peerj.7430
  • Peer Reviewed / Open Access
• [Presentation] Fossil baleen whales (Cetacea, Mysticeti) show that brain shapes achieved modern before baleen evolved (2023)
  • Author(s): Kumiko Matsui, Nicholas D. Pyenson, Takanobu Tsuihiji, Hiroshi Sawamura, Tatsuro Ando
  • Organizer: SVP 83rd Annual Meeting
  • Int'l Joint Research
• [Presentation] New discoveries from the museum's classic fossil collections (2023)
  • Author(s): Kumiko Matsui, Ana Valenzuela-Toro, Nicholas Pyenson
  • Organizer: APC2
  • Int'l Joint Research
• [Presentation] A specimen of Menabites (Collignoniceratidae, Ammonitida) with pathological deformations found from the Campanian Toyajo Formation, Wakayama Prefecture, Japan (2023)
  • Author(s): Tomoki Karasawa, Akihiro Misaki, Kumiko Matsui
  • Organizer: The 172nd Regular Meeting, the Palaeontological Society of Japan.
• [Presentation] “Outbreak”: Walking with a smartphone or camera sets a new risk for the museums (2022)
  • Author(s): Kumiko Matsui, Yuri Kimura
  • Organizer: GSA Connects 2022
  • Int'l Joint Research
• [Presentation] Fossil Baleen whales (Mysticeti) show that cerebrum size achieved modern size before baleen evolved (2022)
  • Author(s): 2.Kumiko Matsui, Nicholas D. Pyenson, Takanobu Tsuihiji, Hiroshi Sawamura, Tatsuro Ando
  • Organizer: GSA Connects 2022
  • Int'l Joint Research
• [Presentation] The same Pathological deformation patterns were recognized in Japanese ammonoids from different age and different taxa (2022)
  • Author(s): Tomoki Karasawa, Kumiko Matsui, Akihiro Misaki, Shigehiro Uchida
  • Organizer: GSA Connects 2022
  • Int'l Joint Research
• [Presentation] Reexamination of Neostrachanognathus feeding organ reconstruction based on natural conodont assemblages from Olenekian (Late Early Triassic) whetstone-type siliceous claystone in the Itsuki area, Kumamoto Prefecture, Japan (2022)
  • Author(s): Yuichi Fukushima, Sachiko Agematsu, Kumiko Matsui, Kaneyoshi Fujiwara, Teruyuki Maruoka
  • Organizer: The 129th Annual Meeting of the Geological Society of Japan
• [Presentation] Mammalian fossils from Senjo-jiki, Wakamatsu, Kitakyushu, Japan (2022)
  • Author(s): Kumiko Matsui, Nicholas D. Pyenson, Kohta Shimazoe, Tomoyuki Ohashi
  • Organizer: The 2022 Annual Meeting, the Palaeontological Society of Japan
• [Presentation] Walking with a smartphone makes new risks: unwritten photo policies in museums cause an unexpected outbreak (2022)
  • Author(s): Kimura Yuri, Kumiko Matsui
  • Organizer: The 2022 Annual Meeting, the Palaeontological Society of Japan
• [Presentation] ”Newly” discovered desmostylians from Unalaska, Alaska, USA. (2022)
  • Author(s): Kumiko Matsui, Nicholas D. Pyenson.
  • Organizer: The 171st Regular Meeting, the Palaeontological Society of Japan.
• [Presentation] Are internal structures preserved in vertebrates’ fossils useful for finite element analyses? ; a pilot analysis using multiple preservation fossils (2021)
  • Author(s): Kumiko Matsui
  • Organizer: MECHANICAL FINDER User Meeting 2021
  • Int'l Joint Research
• [Presentation] The digital cranial endocast of Dusisiren dewana: the implication for paleoecological changes of hydrodamalinae (2021)
  • Author(s): Kumiko Matsui and Tohru Kobayashi
  • Organizer: The 9th SECAD. Online
  • Int'l Joint Research
• [Presentation] Mammalian-like tooth replacement in a Pycnodont fish jaw. (2021)
  • Author(s): Kumiko Matsui and Yuri Kimura
  • Organizer: The Society of Vertebrate Paleontology 81st Annual Meeting Virtual 2021
  • Int'l Joint Research
• [Presentation] モロッコOulad Abdoun盆地上部暁新統から産出した“哺乳類”化石 (2021)
  • Author(s): 松井久美子、木村由莉
  • Organizer: 日本古生物学会 第170回例会
• [Presentation] 北海道白亜系蝦夷層群産の装飾型アンモノイド類“Yubariceras” sp.（アンモナイト目アカントセラス科）に見られた多発的病理変異 (2021)
  • Author(s): 唐沢與希・松井久美子・前田晴良・内田繁比郎
  • Organizer: 日本古生物学会 第170回例会
• [Presentation] ヒゲクジラ類の神経系・感覚器の進化 (2021)
  • Author(s): 松井久美子
  • Organizer: 令和2年度 高知大学 海洋コア総合研究センター 共同利用・共同研究成果発表
• [Presentation] The first digital cranial endocast of an ancestor of Steller’s sea cow. (2020)
  • Author(s): Kumiko Matsui , Tohru Kobayashi
  • Organizer: The Palaeontological Association 64th Annual Meeting.
  • Int'l Joint Research
• [Presentation] Disease never comes singly: a pathological case study on a Cretaceous ammonoid Menuites japonicus (Ammonitida, Pachydiscidae) from Hokkaido, Japan (2020)
  • Author(s): Tomoki Karassawa, Kumiko Matsui, Haruyoshi Maeda, Toshiaki Osanai
  • Organizer: GSA 2020 Connects
  • Int'l Joint Research
• [Presentation] Spatial and temporal distribution of Desmostylia (Mammalia) and Desmostylian evolution related to other marine mammals. (2020)
  • Author(s): Kumiko Matsui
  • Organizer: GSA 2020 Connects
  • Int'l Joint Research
• [Presentation] Touching the Japanese national “treasure”: utilization of multimedia-based visual contents of Japan’s national monument, the holotype of Taniwhasaurus mikasaensis (Squamata: Mosasauria) (2020)
  • Author(s): Kumiko Matsui
  • Organizer: GSA 2020 Connects
  • Int'l Joint Research
• [Presentation] Learning to identify large fossils using deep conventional neural networks. (2020)
  • Author(s): Ryuichiro Hataya, Kumiko Matsui, Tomoki Karasawa
  • Organizer: GSA 2020 Connects
  • Int'l Joint Research
• [Presentation] Interacting with the untouchable: utilizing ultimedia-based visual contents for the Japanese national monument, the Taniwhasaurus mikasaensis (Mosasauridae) (2020)
  • Author(s): Kumiko Matsui, Tomoki Karasawa
  • Organizer: The Society of Vertebrate Paleontology 80th Annual Meeting · Virtual 2020
  • Int'l Joint Research
• [Presentation] Touch national monument: web-based AR application of Taniwhasaurus mikasaensis (2020)
  • Author(s): Kumiko Matsui, Tomoki Karasawa
  • Organizer: JpGU-AGU Joint Meeting 2020: Virtual
  • Int'l Joint Research
• [Presentation] From artisanship to amateur: the challenge to identify large fossils using deep learning (2020)
  • Author(s): Ryuichiro Hataya, Kumiko Matsui, Tomoki Karasawa
  • Organizer: JpGU-AGU Joint Meeting 2020: Virtual
  • Int'l Joint Research
• [Presentation] AR を用いた”触れる”国指定天然記念物 エゾミカサリュウ (Taniwhasaurus mikasensis) 化石 (2020)
  • Author(s): 松井久美子、唐沢與希
  • Organizer: 第74回日本地学教育学会全国大会
  • Invited
• [Presentation] From artisanship to amateur: the challenge to identify large fossils using deep learning. (2020)
  • Author(s): Ryuichiro Hataya1, Kumiko Matsui, Tomoki Karasawa
  • Organizer: JpGU-AGU Joint Meeting 2020
  • Int'l Joint Research
• [Presentation] Touch national monument: web-based AR application of Taniwhasaurus mikasaensis (2020)
  • Author(s): Kumiko Matsui, Tomoki Karasawa
  • Organizer: JpGU-AGU Joint Meeting 2020
  • Int'l Joint Research
• [Presentation] デスモスチルス類の感覚機能の進化と生態の変化ーDesmostylidae のデジタルエンドキャストを基にー (2020)
  • Author(s): 松井久美子・Brian Beatty・澤村寛・安藤達郎・對比地孝亘
  • Organizer: 日本古生物学会 第 169 回例会
• [Presentation] “触れる”エゾミカサリュウ（Taniwhasaurus mikasaensis）―安価で簡単な AR Web アプリケーションの作成― (2020)
  • Author(s): 松井久美子・唐沢與希
  • Organizer: 日本古生物学会 第 169 回例会
• [Presentation] 病み足に腫れ足：北海道産 Menuites japonicus（アンモナイト目）の病理変異 (2020)
  • Author(s): 唐沢與希・松井久美子・前田晴良・小山内年昭
  • Organizer: 日本古生物学会 第 169 回例会
• [Presentation] Juvenile specimen reveals unexpected dental morphology of early Desmostylians. (2019)
  • Author(s): Kumiko Matsui and Brian Lee Beatty.
  • Organizer: 11th North American Paleontological Conference
  • Int'l Joint Research / Invited
• [Presentation] Inference on aquatic adaptation of fossil mammals based on cranial characteristics with an example of the enigmatic fossil clade Desmostylia (?Afrotheria: Mammalia). (2019)
  • Author(s): Kumiko Matsui, Soichiro Kawabe, Hideki Endo, Takanobu Tsuihiji, Naoki Kohno.
  • Organizer: 11th North American Paleontological Conference
  • Int'l Joint Research
• [Presentation] “赤ちゃん”化石が語るデスモスチルス類（哺乳類）の予想外の進化 (2019)
  • Author(s): 松井久美子・Brian Beatty
  • Organizer: 日本地質学会第 126 年学術大会.
• [Remarks]
  • URL: https://twitter.com/NMNH/status/1565705678848757767?s=20
• [Remarks]
  • URL: https://twitter.com/NMNH/status/1565705683642843137?s=20
• [Remarks]
  • URL: https://twitter.com/NMNH/status/1565705685219803140
• [Remarks]
  • URL: https://twitter.com/NMNH/status/1565705689854509056?s=20
• [Remarks]
  • URL: https://twitter.com/NMNH/status/1565705691180023811?s=20