Can marine lakes be a cradle of speciation? Evolutionary process of marine organisms in islands of Palau.

• Project/Area Number: 18405015
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 海外学術
• Research Field: Evolutionary biology
• Research Institution: Yamagata University
• Principal Investigator: TAMATE Hidetoshi Yamagata University, 理学部, 教授 (90163675)
• Co-Investigator(Kenkyū-buntansha): HANZAWA Naoto 山形大学, 理学部, 教授 (40292411) ; HARA Yoshiaki 山形大学, 理学部, 教授 (60111358) ; RICHARD Wj 山形大学, 理学部, 准教授 (90260455) ; IWATA Naoyoshi 山形大学, 理学部, 講師 (70302289) ; SUZUKI Hidekatsu 石巻専修大学, 理工学部, 助教 (80306068)
• Project Period (FY): 2006 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥15,010,000 (Direct Cost: ¥12,400,000、Indirect Cost: ¥2,610,000); Fiscal Year 2009: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2008: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2007: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2006: ¥3,700,000 (Direct Cost: ¥3,700,000)
• Keywords: 生物多様性 / 種分化 / 海水湖 / カイアシ類 / 浮遊生物 / 底生生物 / 遊泳生物 / 異所的種分化 / パラオ共和国 / 浮遊性カイアシ類 / 遺伝的分化 / 魚類 / 二枚貝類 / プランクトン / 群集構造 / 多様度指数 / 多変量解析 / 進化 / 海洋生物 / 動物プランクトン

Research Abstract

Fauna of aquatic organisms in marine lakes of Palau islands was investigated to study the process of speciation and maintenance of biodiversity in marine organisms. Species assemblages of copepods, bivalves and fish were different between holomictic and meromictic lakes according to the level of isolation and local environment of the lakes. Unique morphological differentiation among the lakes was observed in bivalves. Genetic analysis revealed the past bottlenecking in populations of two fish species.

Research Products

• [Journal Article] Species diversity and community structure of pelagic copepods in the marine lakes of Palau (2010)
  • Author(s): Saitoh S, Suzuki H, Hanzawa N, Tamate HB
  • Journal Title: Hydrobiologia, on line advance
  • Peer Reviewed
• [Journal Article] Species diversity and community structure of pelagic copepods in the marine lakes of Palau. (2010)
  • Author(s): Saitoh S, Suzuki H, Hanzawa N, Tamate HB.
  • Journal Title: Hydrobiologia On line advance
  • Peer Reviewed
• [Journal Article] Peripatric differentiation among adjacent marine lake and lagoon populations of a coastal fish, Sphaeramia oricularis (Apogonidae, Percifirmes, Teleostei) (2009)
  • Author(s): Gotoh RO, Sekimoto H, Chiba SN, Hanzawa N.
  • Journal Title: Gene.Genet.Syst. 84 Pages: 287-295
  • Peer Reviewed
• [Journal Article] Peripatric differentiation among adjacent marine lake and laggon populations of a coastal fish, Sphaeramia orbicularls(Apogonidae, Perciformes, Teleostei). (2009)
  • Author(s): Gotoh RO, Sekimoto H, Chiba SN, Hanzawa N.
  • Journal Title: Genes and Genetic Systems 84 Pages: 287-295
  • Peer Reviewed
• [Journal Article] Paralia longispina sp. nov., an extant species from Palau and Haha-jima, western North Pacific (2008)
  • Author(s): Konno S., Jordan RW
  • Journal Title: Proceedings of the 19^<th> International Diatom Symposium Pages: 55-69
  • Peer Reviewed
• [Journal Article] Paralia longispina sp. nov., an extant species from Palau and Haha-jima, western North Pacific (2008)
  • Author(s): Konno S. & Jordan R. W.
  • Journal Title: Proceedings of the 19^<th> International Diatom Symposium (Likhoshway, Y., Biopress Ltd, Bristol, U.K.) Pages: 55-69
  • Peer Reviewed
• [Journal Article] Phylogenetic relationships and natural hybridization in rabbitfishes (Teleostei : Sigenidae) inferred from mitochondrial and nuclear DNA analyses (2007)
  • Author(s): Kuriiwa K., Hanzawa N, Yoshino T, Kimura S, Nishida M
  • Journal Title: Molecular Phylogenetics and Evolution 45 Pages: 69-80
  • Peer Reviewed
• [Journal Article] Phylogenetic relationships and natural hybridization in rabbitfishes (Teleostei : Sigenidae) inferred from mitochondrial and nuclear DNA analyses (2007)
  • Author(s): Kuriiwa K., Hanzawa N., Yoshino T, Kimura S, and Nishida M.
  • Journal Title: Molecular Phylogenetics and Evolution 45 Pages: 69-80
  • Peer Reviewed
• [Journal Article] Lagoon coccolithophorids from the Republic of Palau, NW Equatorial Pacific (2006)
  • Author(s): Konno S., Jordan RW.
  • Journal Title: Journal of Nannoplankton Research 28(2) Pages: 95-110
  • Peer Reviewed
• [Journal Article] Lagoon coccolithophorids from the Republic of Palau, NW Equatorial Pacific (2006)
  • Author(s): Konno S. & Jordan R. W.
  • Journal Title: Journal of Nannoplankton Research 28(2) Pages: 95-110
  • Peer Reviewed
• [Presentation] Attached diatoms on turf from Guam (2009)
  • Author(s): Arai Y, Lobban CS, Konno S, Sasaki A, Mitani S, Jordan RW
  • Organizer: The 29th Autumn Meeting of the Japanese Society of Diatomology
  • Place of Presentation: 山形
  • Year and Date: 2009-10-17
• [Presentation] Recurrent Chaetoceros blooms in Palau meromictic marine lakes (2009)
  • Author(s): Konno S, Inoue N, Hernandez-Becerril DU, Jordan RW.
  • Organizer: The 29th Autumn Meeting of the Japanese Society of Diatomology
  • Place of Presentation: 山形
  • Year and Date: 2009-10-17
• [Presentation] Attached diatoms on seaweeds from Guam (2009)
  • Author(s): Sasaki A, Lobban CS, Arai Y, Mitani S, Konno S., Jordan RW.
  • Organizer: The 29th Autumn Meeting of the Japanese Society of Diatomology
  • Place of Presentation: 山形
  • Year and Date: 2009-10-17
• [Presentation] Population genetic analysis of the calanoid copepods suggests genetic differentiation among geographically isolated populations in marine lakes of Palau (2009)
  • Author(s): Saitoh S, Suzuki H, et al.
  • Organizer: 国際甲殻類学会
  • Place of Presentation: 東京
  • Year and Date: 2009-09-22
• [Presentation] Population genetic analysis of the calanoid copepods suggests genetic differentiation among geographically isolated populations in marine lakes of Palau. (2009)
  • Author(s): Saitoh S., et al.
  • Organizer: 国際甲殻類学会
  • Place of Presentation: 東京海洋大学(東京都)
  • Year and Date: 2009-09-22
• [Presentation] Primary process of speciation in marine lakes of Palau Island : the case of striped silverside, Atherinomorus endrachtensis (Atherinidae, Atheriniformes, Teleostei) (2009)
  • Author(s): Gotoh RO, Hanzawa N.
  • Organizer: Modern Achievements in Population, Evolutionary and Ecological Genetics 2009
  • Place of Presentation: Vostok, Russia
  • Year and Date: 2009-09-10
• [Presentation] Primary process of speciation in marine lake of Palau Island : the case of striped silverside, Atherinomorus endrachtensis. (2009)
  • Author(s): Gotoh R., et al.
  • Organizer: Modern Achievements in Populations, Evolutionary and Ecological Genetics 2009
  • Place of Presentation: Vostok(Russia)
  • Year and Date: 2009-09-07
• [Presentation] パラオ諸島沿岸域および海水湖におけるカイアシ類の生物多様性 (2009)
  • Author(s): 斉藤真一, 玉手英利
  • Organizer: 第56回日本生態学会大会
  • Place of Presentation: 岩手県立大学
  • Year and Date: 2009-03-18
• [Presentation] パラオ諸島沿岸域及び海水湖におけるカイアシ類の生物多様性 (2009)
  • Author(s): 斉藤真一, 玉手英利
  • Organizer: 第56回日本生態学会大会
  • Place of Presentation: 盛岡
  • Year and Date: 2009-02-18
• [Presentation] Marine attached diatoms in turf from Guam (2009)
  • Author(s): Arai Y, Lobban CS, Jordan RW.
  • Organizer: Paleoceanography Meeting
  • Place of Presentation: Tokyo, Japan
  • Year and Date: 2009-01-08
• [Presentation] Marine attached diatoms in turf from Guam (2008)
  • Author(s): Arai, Y., Lobban, C. S., Jordan, R.
  • Organizer: The 28th Autumn Meeting of the Japanese Society of Diatomology
  • Place of Presentation: Yamanashi, Japan
  • Year and Date: 2008-10-25
• [Presentation] グアムにおけるturfの海藻付着性珪藻について (2008)
  • Author(s): 新井由美, Lobban, C. S., Jordan, R. W
  • Organizer: 日本珪藻学会第28回研究集会
  • Place of Presentation: 山梨
  • Year and Date: 2008-10-25
• [Presentation] Coccolithophorid distribution in Palauan lagoons (2008)
  • Author(s): Kijima A., Jordan R. W.
  • Organizer: The 12th Conference of the International Nannoplankton Association (INA12)
  • Place of Presentation: Lyon, France
  • Year and Date: 2008-09-06
• [Presentation] Coccolithophorid distribution in Palauan lagoons (2008)
  • Author(s): Kijima, A., Jordan, R. W.
  • Organizer: 12th Conference of the International Nanoplankton Association
  • Place of Presentation: Lyon, France
  • Year and Date: 2008-09-06
• [Presentation] パラオ諸島海水湖におけるトウゴロウイワシ科魚類の進化の初期過程 (2008)
  • Author(s): 後藤亮・千葉悟・後藤禎補・半澤直人
  • Organizer: 第10回日本進化学会大会
  • Place of Presentation: 東京
  • Year and Date: 2008-08-22
• [Presentation] Species diversity of pelagic copepods in the marine lakes of Palau (2008)
  • Author(s): Saitoh S, Suzuki H, Hanzawa N, Tamate HB.
  • Organizer: The 10^<th> International Conference on Copepoda
  • Place of Presentation: Pattaya, Thailand
  • Year and Date: 2008-07-14
• [Presentation] Species diversity of pelagic copepods in the marine lakes of Palau (2008)
  • Author(s): Saitoh S., et.al.
  • Organizer: 10th International Conference on Copepoda
  • Place of Presentation: Pattaya, Thailand
  • Year and Date: 2008-07-14
• [Presentation] パラオ諸島の海水湖における浮遊性カイアシ類の生物多様性 (2007)
  • Author(s): 斉藤真一, 玉手英利, 鈴木英勝
  • Organizer: 日本ベントス・プランクトン学会合同大会
  • Place of Presentation: 横浜
  • Year and Date: 2007-09-23
• [Presentation] パラオ諸島の海水湖における浮遊性カイアシ類の生物多様性 (2007)
  • Author(s): 斉藤真一・玉手英利・鈴木英勝
  • Organizer: 日本ベントス・日本プランクトン学会合同大会
  • Place of Presentation: 横浜市立大学
  • Year and Date: 2007-09-23
• [Presentation] Genetic divergence of three morph-types of mussels inhabiting marine lakes in Palau Islands (2007)
  • Author(s): Goto T, Hanzawa N.
  • Organizer: Modern Achievements in Population, Evolutionary and Ecological Genetics
  • Place of Presentation: Vostok, Russia
  • Year and Date: 2007-09-10
• [Presentation] Analysis of the microbiological component in bottom sediments of a marine lake (2007)
  • Author(s): Konno S, Inoue N, Genka R, Jordan RW.
  • Organizer: 第10回マリンバイオテクノロジー学会大会サテライトシンポジウム
  • Place of Presentation: 山形
  • Year and Date: 2007-05-25
• [Presentation] パラオ海水湖および沿岸域における浮遊性カイアシ類の種多様性 (2007)
  • Author(s): 斉藤真一, 玉手英利
  • Organizer: 第10回マリンバイオテクノロジー学会大会サテライトシンポジウム
  • Place of Presentation: 山形
  • Year and Date: 2007-05-25
• [Presentation] 海水湖のクラゲ類における遺伝的多様性と固有進化 (2007)
  • Author(s): 半澤直人
  • Organizer: 第10回マリンバイオテクノロジー学会大会サテライトシンポジウム
  • Place of Presentation: 山形
  • Year and Date: 2007-05-25
• [Presentation] 海水湖の魚類における遺伝的多様性と初期分化 (2007)
  • Author(s): 千葉悟・半澤直人
  • Organizer: 第10回マリンバイオテクノロジー学会大会サテライトシンポジウム
  • Place of Presentation: 山形
  • Year and Date: 2007-05-25
• [Presentation] パラオ海永湖および沿岸域における浮遊性カイアシ類の種多様性 (2007)
  • Author(s): 斉藤真一・玉手英利
  • Organizer: 第10回マリンバイオテクノロジー学会大会サテライトシンポジウム
  • Place of Presentation: 山形大学
  • Year and Date: 2007-05-25
• [Presentation] アイゴ科魚類における自然交雑 (2006)
  • Author(s): 栗岩薫・半澤直人・吉野哲夫・木村清志・西田睦
  • Organizer: 日本魚類学会年会
  • Place of Presentation: 静岡
  • Year and Date: 2006-10-08
• [Presentation] 海洋生物の進化プロセス―パラオ諸島海水湖のミズクラゲ類の進化 (2006)
  • Author(s): 我妻有実・鈴木明日香・奥泉和也・半澤直人
  • Organizer: 日本動物学会第77回大会
  • Place of Presentation: 松江
  • Year and Date: 2006-09-22
• [Presentation] パラオ諸島の海水湖群に生息するイガイ科貝類3型の形態的・遺伝的分化 (2006)
  • Author(s): 後藤禎補・半澤直人
  • Organizer: 日本動物学会第77回大会
  • Place of Presentation: 松江
  • Year and Date: 2006-09-22
• [Presentation] 海洋生物の進化プロセス-パラオ諸島海水湖のカスミハゼの進化 (2006)
  • Author(s): 渡辺葉平・千葉悟・半澤直人
  • Organizer: 日本動物学会第77回大会
  • Place of Presentation: 松江
  • Year and Date: 2006-09-22
• [Presentation] 海洋生物の進化プロセス―パラオ諸島海水湖のヤクシマイワシ属魚類の進化 (2006)
  • Author(s): 後藤亮・千葉悟・半澤直人
  • Organizer: 日本動物学会第77回大会
  • Place of Presentation: 松江
  • Year and Date: 2006-09-22
• [Presentation] Diatom assemblages from Palauan marine lakes and lagoons (2006)
  • Author(s): Inoue N, Konno S, Oguchi K., Jordan R. W.
  • Organizer: The 19th International Diatom Symposium
  • Place of Presentation: Listvyanka, Russia
  • Year and Date: 2006-08-28
• [Presentation] パラオ諸島海水湖産および日本産ミズクラゲの体構成タンパク質種の比較検討 (2006)
  • Author(s): 田口恵・三浦久美子・奥泉和也・半澤直人・中内祐二
  • Organizer: 日本動物学会東北支部大会
  • Place of Presentation: 山形
  • Year and Date: 2006-08-05
• [Presentation] 遺伝子マーカーに基づくパラオ海水湖産イガイ科貝類の系統的位置と種分化の解析 (2006)
  • Author(s): 後藤禎補・半澤直人
  • Organizer: マリンバイオテクノロジー学会第9回大会
  • Place of Presentation: 東京
  • Year and Date: 2006-05-27
• [Presentation] パラオ諸島の海水湖に生息する魚類3種の進化的特異性と保全 (2006)
  • Author(s): 後藤亮・関本英克・渡辺葉平・千葉悟・半澤直人
  • Organizer: マリンバイオテクノロジー学会第9回大会
  • Place of Presentation: 東京
  • Year and Date: 2006-05-27
• [Book] 海水湖 (閉鎖海洋系) における海洋生命系の固有進化 (2009)
  • Author(s): 工藤創・渡辺葉平・我妻有実・半澤直人・原慶明. 西田睦編
  • Publisher: 東海大出版会. 東京
• [Book] Paralia longispina sp. nov., an extant species from Palau and Haha-jima, western North Pacific. Proceedings of the Nineteenth International Diatom Symposium (Likhoshway, Y., ed.) (2008)
  • Author(s): Konno, S. & Jordan, R. W.
  • Publisher: Biopress Ltd, Bristol, U. K.
• [Book] Diatoms on coral reefs and in tropical marine lakes
  • Author(s): Lobban CS, Jordan RW.
  • Publisher: Cambridge University Press, Cambridge, U.K.(in press)
• [Remarks] サイエンス・カフェin やまがた 「クラゲの不思議-癒し系だけど毒針と分身の術でたくましく生きる!」2008 年11 月29 日、山形県立博物館(山形市)
• [Remarks] 朝日新聞記事「水玉クラゲは飼育の証し?」2007年11月17日
• [Remarks] 学術振興会平成18年度ひらめき☆ときめきサイエンス「ゲームで体験、実験で理解する、生き物の進化の不思議2006」2006年10月29日、山形大学(山形市)