Role of terrace ridges in mechanoreceptive system in trilobites: analogy study on fossil and extant arthropod cuticular sense organs

2012 Fiscal Year Final Research Report

• Project/Area Number: 23740384
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Stratigraphy/Paleontology
• Research Institution: Shizuoka University
• Principal Investigator: SUZUKI Yutaro 静岡大学, 理学部, 講師 (50345807)
• Project Period (FY): 2011 – 2012
• Keywords: 機能 / 形態

Research Abstract

Based on the analogy and functional morphology study on exoskeletal terrace ridges of fossil trilobite and extant decapod Pachygrapsus grassipes, its mechanoreceptive role to revalate directivity in touch stimula is clarified. Using the perception mechanisms, the animal could judge the present situation as suitable or not. Trilobites equipped with similar perception mechanisms could monitor the condition of itself against ambient environments, such as against substrate.

Research Products

• [Journal Article] Swimming capability of the remopleuridid trilobite Hypodicranotus striatus: hydrodynamic functions of the exoskeleton and trhe long, forked hypostome (2012)
  • Author(s): Yuta Shiino、Osamu Kuwazuru、Yutaro Suzuki、Satoshi Ono
  • Journal Title: Journal of Theoretical Biology Volume: Vol.300 Pages: 29-38
  • DOI: DOI:http://dx.doi.org/10.1016/j.jtbi.2012.01.012
  • Peer Reviewed
• [Journal Article] Exquisite hydrodynamic morphology of the remopleuridid trilobite Hypodicranotus striatulus: Functional insights into the mode of life (2012)
  • Author(s): Yuta Shiino、Osamu Kuwazuru、Yu tar o Suzuki、Satoshi Ono、Chihiro Masuda
  • Journal Title: The 5^th Conference on Trilobites and their relativesabstracts Pages: 52
  • Peer Reviewed
• [Journal Article] The function of terrace ridges associated with sensory setae in the carapace of the decapod Pachygrapsus crassipes: implications for trilobite biology (2012)
  • Author(s): Yutaro Suzuki、Shokei Yamada、Satoshi Ono
  • Journal Title: The 5^th Conference on Trilobites and their relativesabstracts Pages: 56
  • Peer Reviewed
• [Presentation] 定住性イレニモルフ三葉虫の視覚特性 (2013)
  • Author(s): 大野悟志・鈴木雄太郎
  • Organizer: 日本古生物学会
  • Place of Presentation: 横浜国立大学(神奈川県)
  • Year and Date: 2013-01-27
• [Presentation] 球体化防御姿勢の構築における形態的メカニズム:ハマダンゴムシTylos granuliferusを例に (2013)
  • Author(s): 牧野淳平・鈴木雄太郎
  • Organizer: 日本古生物学会
  • Place of Presentation: 横浜国立大学(神奈川県)
  • Year and Date: 2013-01-27
• [Presentation] The function of terrace ridges associated with sensory setae in the carapace of the decapod Pachygrapsus crassipes: implications for trilobite biology (2012)
  • Author(s): Yutaro Suzuki、Shokei Yamada、Satoshi Ono
  • Organizer: The 5th Conference on Trilobites and their relatives (TRILO2012)
  • Place of Presentation: プラハ(チェコ)
  • Year and Date: 2012-07-03
• [Presentation] Exquisite hydrodynamic morphology of the remopleuridid trilobite Hypodicranotus striatulus: Functional insights into the mode of life (2012)
  • Author(s): Yuta Shiino、Osamu Kuwazuru、Yutaro Suzuki、Satoshi Ono 、Chihiro Masuda
  • Organizer: The 5th Conference on Trilobites and their relatives (TRILO2012)
  • Place of Presentation: プラハ(チェコ)
  • Year and Date: 2012-07-03
• [Presentation] 三葉虫Ellipsocephalus polytomusのカプセル型 enroll姿勢:適応放散を促した姿勢構築機構 (2011)
  • Author(s): 牧野淳平・鈴木雄太郎
  • Organizer: 日本古生物学会
  • Place of Presentation: 金沢大学(福井県)
  • Year and Date: 2011-07-02
• [Book] 進化学事典 (2012)
  • Author(s): 鈴木雄太郎
  • Total Pages: 975
  • Publisher: 共立出版
• [Remarks] 日本古生物学会優秀ポスター賞
  • URL: http://www.palaeo- soc- japan.jp/Japanese/awards.html#bestposter
• [Remarks] 修士課程地球科学専攻1年生 牧野淳平さん(鈴木雄太郎研究室)が、日本古生物学会2011年年会において、優秀ポスター賞を受賞
  • URL: http://www.shizuoka.ac.jp/stars/detail.html?CN=787
• [Remarks] 大野悟志さん・鈴木雄太郎講師が日本古生物学会優秀ポスター賞を受賞
  • URL: http://www.sci.shizuoka.ac.jp/news/409.html