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ID 32152
本文ファイル
著者
Humphreys, Tom
Sasaki, Akane
Uenishi, Gene
Taparra, Kekoa
Arimoto, Asuka
Tagawa, Kuni
キーワード
animal model
brain evolution
SEM
gill
in-situ hybridization
regeneration
acorn worm
NDC
動物学
抄録(英)
When the body of P. flava is severed, the animal has the ability to regenerate its missing anterior or posterior as appropriate. We have focused on anterior regeneration when the head and branchial regions are severed from the body of the worm. After transection, the body wall contracts and heals closed in 2 to 3 days. By the third day a small blastema is evident at the point of closure. The blastema grows rapidly and begins the process of differentiating into a head with a proboscis and collar. At 5 days the blastema has increased greatly in size and differentiated into a central bulb, the forming proboscis, and two lateral crescents, the forming collar. Between 5 and 7 days a mouth opens ventral to the differentiating blastema. Over the next few days the lateral crescents extend to encircle the proboscis and mouth, making a fully formed collar. By 10 to 12 days a new head, sized to fit the worm's body, has grown attached to the severed site. At about this time the animal regains apparently normal burrowing behavior. After the head is formed, a second blastema-like area appears between the new head and the old body and a new branchial region is inserted by regeneration from this blastema over the next 2 to 3 weeks. The regenerating tissues are unpigmented and whitish such that in-situ hybridization can be used to study the expression of genes during the formation of new tissues.
内容記述
Zoological Science Award 2011(日本動物学会2011年度論文賞)受賞論文
掲載誌名
Zoological Science
27巻
2号
開始ページ
91
終了ページ
95
出版年月日
2010-02
出版者
Zoological Society of Japan
日本動物学会
ISSN
0289-0003
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright (c) 2010 Zoological Society of Japan
関連情報URL
部局名
理学研究科