1990 Fiscal Year Annual Research Report

「生きた化石」の進化古生物学的研究

Research Project

Project/Area Number	02402017
Research Institution	The University of Tokyo
Principal Investigator	棚部一成東京大学, 理学部, 助教授 (20108640)
Co-Investigator(Kenkyū-buntansha)	塚原潤三鹿児島大学, 理学部, 教授 (20008923) 大路樹生東京大学, 理学部, 助手 (50160487) 阿部勝巳東京大学, 理学部, 助手 (80151091) 速水格東京大学, 理学部, 教授 (80037184)
Keywords	生きた化石 / 進化 / 古生物学 / オウムガイ類 / イタヤガイ類 / 有柄ウミユリ類 / 介形虫類
Research Abstract	1.現生オウムガイ類に関する研究成果(棚部・塚原による) パラオ諸島から採集したオウムガイ(Nautilus belauensis)の長期飼育により得られた受精卵の胚発達過程を軟X線により調べた。さらに胚中期の形態学的特徴を光学顕微鏡レベルで検討し,その進化学的意義を考察した(Journal of Cephalopod Biologyに印刷中)。 2.イタヤガイ科二枚貝に関する研究成果(速水による) 現生・化石イタヤガイ類数種の遊泳時における殻の翼性能を、実際の標本およびプラスチック模型を用いて実験的に調べ,その機能形態学ならびに進化学的意義を考察した(Paleobiology誌に印刷中)。 3.有柄ウミユリ類に関する研究成果(大路による) 日本産中新世ゴカクウミユリ類3種を記載報告するとともに、その古生物地理学上の意義を考察した。また西大西洋域に生息するウミユリ類Endoxocrinus parralに2型現象を認めたので報告した(日本古生物学会報告・紀事(英文誌)に2論文を公表)。なお、その遺伝的背景については、今後アイソザイム分析などにより検討予定である。 4.介形虫類に関する研究成果(阿部による) 現生の原始的介形虫、ウミボタル類の自然史的特徴を走査型電顕やビデオ生態観察により調べるとともに、その成果をもとに古生代前期の化石種の生態、生活史、機能形態、系統上の位置などを論じた(Palaeontology誌に印刷中)。 1〜4の研究と関連し,走査型電子顕微鏡,アイソザイム分析用機器、パ-ソナルコンピュ-タを購入した。アイソザイムによる遺伝的検討は、次年度に行う予定である。

Research Products

(12 results)

All Other

All Publications (12 results)

[Publications] Tanabe,K.,Tsukahara,J.,Fukuda,Y.&Taya,Y.: "Histology of a living Nautilus:preliminaary observations." Journal of Cephalopod Biology. 2. (1991)
[Publications] Tanabe,K.: "Variability and mode of evolution of the Middle Cretaceous ammonite Subprionocyclus (Ammonitina:Collignoniceratidae) from Japan." Geobios,Special Volume. (1991)
[Publications] Tanabe,K.: "Early Jurassic macrofauna of the oxygenーdepleted epicontinental marine basin in the Toyora area,west Japan." SaitoーHoonkai Museum of Natural History,Bulletin. (1991)
[Publications] Tanabe,K.: "Early life history of two Middle Pleistocene species of Limopsis (Arcoida:Bivalvia)." Transactions and Proceedings of the Palaeontological Society of Japan,New Series. No.160. 631-640 (1990)
[Publications] Tanabe,K.,Tsukahara,J.& Hayasaka,S.: "Comparative morphology of living Nautilus (Cephalopoda) from the Philippines,Fiji and Palau." Malacologia. 31. 297-312 (1990)
[Publications] Hayami,I.: "Airfoil analogy of living and fossil scallop shellsan experimental study." Paleobiology. (1991)
[Publications] Hayami,I.: "Distribution of postーPaleozoic scallops in the Tethys and PacificーDispersal or vicariance?" SaitoーHoonkai Museum of Natural History Bulletin. (1991)
[Publications] Abe,K.(Whatley,R.& Maybury,C.(eds.)): "What the sex ratio tells us:a case from marine ostracods." Ostracoda and Global Events.Chapman and Hall.175-185 (1990)
[Publications] Abe,K.& Vannier,J.: "Mating behavior in the podocopid sstracode Bicornucythere bisanensis (Okubo,1975):rotation of a female by a male with asynmmetric fifth limbs." Journal of Crustacean Biology. (1991)
[Publications] Vannier,J.& Abe,K.: "Recent and early Paleozoic myodocope ostracodes:functional morphology,phylogeny,lifestyles and distribution." Palaeontology. (1991)
[Publications] Oji,T.: "Miocene Isocrinidae (stalked crinoids) from Japan and their biogeographic implication." Transactions and Proceedings of the Palaeontological Society of Japan,New Series. No.157. 412-429 (1990)
[Publications] Oji,T.: "Dimorphism and geographic distribution of two phenotypes of a west Atlantic stalked crinoid Endoxocrinus parrae (Gervais)." Transactions and Proceedings of the Palaeontological Society of Japan,New Series. No.159. 603-606 (1990)

1990 Fiscal Year Annual Research Report

「生きた化石」の進化古生物学的研究

Principal Investigator

棚部 一成 東京大学, 理学部, 助教授 (20108640)

Research Products

[Publications] Tanabe,K.,Tsukahara,J.,Fukuda,Y.&Taya,Y.: "Histology of a living Nautilus:preliminaary observations." Journal of Cephalopod Biology. 2. (1991)

[Publications] Tanabe,K.: "Variability and mode of evolution of the Middle Cretaceous ammonite Subprionocyclus (Ammonitina:Collignoniceratidae) from Japan." Geobios,Special Volume. (1991)

[Publications] Tanabe,K.: "Early Jurassic macrofauna of the oxygenーdepleted epicontinental marine basin in the Toyora area,west Japan." SaitoーHoonkai Museum of Natural History,Bulletin. (1991)

[Publications] Tanabe,K.: "Early life history of two Middle Pleistocene species of Limopsis (Arcoida:Bivalvia)." Transactions and Proceedings of the Palaeontological Society of Japan,New Series. No.160. 631-640 (1990)

[Publications] Tanabe,K.,Tsukahara,J.& Hayasaka,S.: "Comparative morphology of living Nautilus (Cephalopoda) from the Philippines,Fiji and Palau." Malacologia. 31. 297-312 (1990)

[Publications] Hayami,I.: "Airfoil analogy of living and fossil scallop shellsan experimental study." Paleobiology. (1991)

[Publications] Hayami,I.: "Distribution of postーPaleozoic scallops in the Tethys and PacificーDispersal or vicariance?" SaitoーHoonkai Museum of Natural History Bulletin. (1991)

[Publications] Abe,K.(Whatley,R.& Maybury,C.(eds.)): "What the sex ratio tells us:a case from marine ostracods." Ostracoda and Global Events.Chapman and Hall.175-185 (1990)

[Publications] Abe,K.& Vannier,J.: "Mating behavior in the podocopid sstracode Bicornucythere bisanensis (Okubo,1975):rotation of a female by a male with asynmmetric fifth limbs." Journal of Crustacean Biology. (1991)

[Publications] Vannier,J.& Abe,K.: "Recent and early Paleozoic myodocope ostracodes:functional morphology,phylogeny,lifestyles and distribution." Palaeontology. (1991)

[Publications] Oji,T.: "Miocene Isocrinidae (stalked crinoids) from Japan and their biogeographic implication." Transactions and Proceedings of the Palaeontological Society of Japan,New Series. No.157. 412-429 (1990)

[Publications] Oji,T.: "Dimorphism and geographic distribution of two phenotypes of a west Atlantic stalked crinoid Endoxocrinus parrae (Gervais)." Transactions and Proceedings of the Palaeontological Society of Japan,New Series. No.159. 603-606 (1990)

棚部一成東京大学, 理学部, 助教授 (20108640)