タケウチ　マサキ   Takeuchi Masaki   竹内　雅貴    所属   川崎医療福祉大学  医療技術学部 臨床検査学科    職種   准教授
言語種別	英語
発表タイトル	The early embryogenesis of Polypterus (Bichirs), the most basal ray-finned fishes: insights into the origin and evolution of vertebrate body plans
会議名	2nd Joint Meeting of the French and Japanese Societies for Developmental Biology: From Cells to Organs
学会区分	国際学会及び海外の学会
発表形式	ポスター掲示
講演区分	一般
発表者・共同発表者	◎Takeuchi M, Takahashi M, Aizawa S
発表年月日	2010/05/27
開催地 （都市, 国名）	Paris, France
概要	Germ layer patterning and body axis formation are central issues in vertebrate embryology that can be examined in some model animals. An intriguing question is how the mechanisms that existed in an ancestral vertebrate have been modified during vertebrate evolution. A major stream of vertebrates (Osteichthyes = bony fishes) evolved into two monophyletic lineages: Sarcopterygii, including amphibians and amniotes, and Actinopterygii (ray-finned fishes), including teleosts as the crown group. Bichir diverged from all other actinopterygians soon after this divarication. Therefore, bichir is uniquely well suited for studies assessing the ancestral state of Osteichthyes/Actinopterygii as well as understanding the divergence of embryogenesis in teleosts and amphibians.---