A study of species biology on a brown alga Scytosiphon lomentaria in Japan

2011 Fiscal Year Final Research Report

• Project/Area Number: 21570084
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Biodiversity/Systematics
• Research Institution: Hokkaido University
• Principal Investigator: KOGAME Kazuhiro 北海道大学, 大学院・理学研究院, 准教授 (80215219)
• Project Period (FY): 2009 – 2011
• Keywords: 隠蔽種 / 生殖隔離 / ハプロタイプ / 交雑実験 / 褐藻 / カヤモノリ

Research Abstract

Species is a fundamental unit for understanding of biodiversity. But, we sometimes encounter species whose species boundary is unclear. Scytosiphon lomentaria is a brown alga that is distributed in cold and warm waters worldwide and is recognized as a single species. In this study, molecular analyses of DNA sequences of some genes and cross experiments were carried out in S. lomentaria from Japan. The results suggested that Japanese S. lomentaria includes three species at least and that two species of them are very closely related and are able to cross between them in laboratory.

Research Products

• [Journal Article] New evidence for morphological and genetic variation in the cosmopolitan coccolithophore Emiliania huxleyi (Prymnesiophyceae) from the coxlb-atp4 genes (2011)
  • Author(s): Hagino, K., Bendif, E. M., Young, J. R., Kogame, K., Takano, Y., Horiguchi, T., de Vargas, C. and Okada, H.
  • Journal Title: Journal of Phycology Volume: 47 Pages: 1164-1176
  • Peer Reviewed
• [Journal Article] Petalonia tatewakii sp. nov. (Scytosiphonaceae, Phaeophyceae) from the Hawaiian Islands (2011)
  • Author(s): Kogame, K., Kurihara, A., Cho, G. Y., Lee, K. M., Sherwood, A. R. and Boo, S. M
  • Journal Title: Phycologia Volume: 50 Pages: 563-573
  • Peer Reviewed
• [Journal Article] Disappearance of male mitochondria DNA after four-cell stage in sporophytes of the isogamous brown alga Scytosiphon lomentaria (Scytosiphonaceae, Phaeophyceae) (2010)
  • Author(s): Kimura, K., Nagasato, C., Kogame, K. and Motomura, T.
  • Journal Title: Journal of Phycology Volume: 46 Pages: 143-152
  • Peer Reviewed
• [Journal Article] Geographical genetic structure and phylogeography of the Sargassum horneri/filicinum complex in Japan (2009)
  • Author(s): Uwai S., Kogame K., Yoshida G., Kawai H. and Ajisaka T.
  • Journal Title: based on the mitochondrial cox3 haplotype. Marine Biology Volume: 156 Pages: 901-911
  • Peer Reviewed
• [Presentation] 日本産褐藻アキネトスポラ属の分類学的研究 (2011)
  • Author(s): 八重樫康祐,山岸幸正,上井進也,小亀一弘
  • Organizer: 日本藻類学会第35回大会
  • Place of Presentation: 富山大学(富山市)
  • Year and Date: 20110327-28
• [Presentation] 北海道沿岸における紅藻ウラソゾのケミカルレ-スと遺伝的多様性 (2011)
  • Author(s): 木下大旗,小亀一弘,渡邉摩美,沖野龍文,阿部剛史
  • Organizer: 日本藻類学会第35回大会
  • Place of Presentation: 富山大学(富山市)
  • Year and Date: 20110327-28
• [Presentation] 褐藻マツモ属(Analipus)の分子系統学的解析 (2010)
  • Author(s): 石川彰造,阿部剛史,川井浩史,小亀一弘
  • Organizer: 日本藻類学会第34回大会
  • Place of Presentation: 筑波大学(つくば市)
  • Year and Date: 20100320-21
• [Presentation] 褐藻カヤモノリ種複合体の構造 (2010)
  • Author(s): 小亀一弘
  • Organizer: 第55回日本植物学会北海道支部大会
  • Place of Presentation: 北海道大学(札幌市)
  • Year and Date: 2010-08-03
• [Presentation] Crossing experiments in the Scytosiphon lomentaria complex (Phaeophyceae) in Japan (2009)
  • Author(s): Kogame, K. and Ishikawa, S.
  • Organizer: 9th International Phycological Congress
  • Place of Presentation: Tokyo, Japan
  • Year and Date: 20090802-08
• [Presentation] Difference of elimination timing in male mitochondria and mitochondrial DNA after fertilization between isogamous and oogamous brown algae (2009)
  • Author(s): Kimura, K., Nagasato, C., Kogame, K. and Motomura, T.
  • Organizer: 9th International Phycological Congress
  • Place of Presentation: Tokyo, Japan
  • Year and Date: 20090802-08
• [Presentation] A phylogenetic study of Japanese articulated coralline algae (Rhodophyta) (2009)
  • Author(s): Sato, D., Shimada, S., Kogame, K. and Baba, M.
  • Organizer: 9th International Phycological Congress
  • Place of Presentation: Tokyo, Japan
  • Year and Date: 20090802-08