Studies on molecular basis of snake olfaction and the speciation between two sympatric sibling species of sea snakes.

2011 Fiscal Year Final Research Report

• Project/Area Number: 22770082
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Biodiversity/Systematics
• Research Institution: Kyoto University
• Principal Investigator: KISHIDA Takushi 京都大学, 大学院・理学研究科, 研究員(グローバルCOE) (40527892)
• Project Period (FY): 2010 – 2011
• Keywords: 嗅覚 / 進化 / 海洋性羊膜動物 / ヘビ亜目

Research Abstract

Olfactory receptor(OR) gene repertoires in fully aquatic, amphibious and terrestrial snakes were analyzed. As a result, it has been confirmed that aquatic adaptation causes the reduction of the number of OR genes not only in the case of mammals, but also in the case of snakes. However, unlike marine mammals, sea snakes still possess well-developed vomeronasal organs. In addition, the OR gene repertoires between two sympatric sibling sea snake species, Laticauda colubrina and L. frontalis were compared, but there are no significant differences between them.

Research Products

• [Journal Article] Evolutionary changes of the importance of olfaction in cetaceans based on the olfactory marker protein (2012)
  • Author(s): 岸田拓士, J. G. M. Thewissen
  • Journal Title: Gene Volume: 492巻 Pages: 349-353
  • DOI: DOI:10.1016/j.gene.2011.11.013
  • URL: http://repository.kulib.kyotou.ac.jp/dspace/handle/2433/152383
  • Peer Reviewed
• [Journal Article] 天国に最も近い動物たち (2011)
  • Author(s): 岸田拓士
  • Journal Title: 生き物たちのつづれ織り(京都大学理学研究科・生物多様性グローバルCOE発行) Volume: 4巻 Pages: 163-164
• [Journal Article] Aquatic adaptation and the evolution of the loss of olfaction in amniotes
  • Author(s): 岸田拓士
  • Journal Title: Evolution and Senses : Springer Briefs in Biology Volume: (印刷中)
  • Peer Reviewed
• [Presentation] 特にウミヘビ類の感覚受容体遺伝子レパートリーの進化学的解析 (2011)
  • Author(s): 岸田拓士、有鱗類
  • Organizer: 日本爬虫両棲類学会第50回記念大会
  • Place of Presentation: 京都大学(京都府)
  • Year and Date: 2011-10-08
• [Presentation] The olfactory receptor genes expressed in the vomeronasal organ of fully aquatic hydrophiine sea snakes (2011)
  • Author(s): 岸田拓士、戸田守、疋田努
  • Organizer: 6^<th> Triennial conference on secondary adaptation of tetrapods to life in water
  • Place of Presentation: サンディエゴ(米国)
  • Year and Date: 2011-06-09
• [Presentation] ヘビ類の嗅覚受容体遺伝子の分子進化学的解析 (2010)
  • Author(s): 岸田拓士、疋田努
  • Organizer: 日本爬虫両棲類学会第49回大会
  • Place of Presentation: 慶応義塾大学(神奈川県)
  • Year and Date: 2010-10-09
• [Presentation] Evolution of olfactory systems in whales and sea snakes same cause but different effects. (2010)
  • Author(s): 岸田拓士
  • Organizer: 4^<th> International symposium of the Biodiversity & Evolution Global COE Project
  • Place of Presentation: 京都大学(京都府)
  • Year and Date: 2010-09-12
• [Presentation] クジラとウミヘビの嗅覚器官とOlfactory Marker Protein(OMP)遺伝子 (2010)
  • Author(s): 岸田拓士、Clement Lamy、戸田守、阿形清和、疋田努
  • Organizer: 第12回日本進化学会大会
  • Place of Presentation: 東京工業大学(東京都)
  • Year and Date: 2010-08-04
• [Remarks] アウトリーチ活動情報:2011年度京都大学サイエンスコミュニケータープロジェクトに参加『生物多様性って何だろう-海を泳ぐ羊膜動物の研究を通して-』という題目で下記4校にて講演。
• [Remarks] 鈴鹿中学校/2011年8月1日
• [Remarks] 和歌山県立田辺中学校/2011年10月18日
• [Remarks] 徳島県立富岡西高等学校/2011年10月25日
• [Remarks] 山口市立白石中学校 /2011年11月10日