Acrosome Reaction in Spermatozoa from the Amphioxus Branchiostoma belcheri(Cephalochordata, Chordata)(Physiology)
スポンサーリンク
概要
- 論文の詳細を見る
The formation of an acrosomal process at acrosomal exocytosis in spermatozoa of the amphioxus was described in the present report for the first time. A non-reacted acrosome was located in front to the nucleus, where a cup-shaped acrosomal vesicle covered a conical accumulation of subacrosomal material. When naturally spawned spermatozoa were treated with a calcium ionophore, ionomycin, the acrosomal vesicle opened at the apex and an acrosomal process was projected. The process exhibited a filamentous structure. The reaction followed the mode typically seen in marine invertebrates. These observations suggest that the features and function of the acrosome of amphioxus, whose position is on the border between invertebrates and vertebrates, reflect their ecological adaptation and phylogenic position.
- 社団法人日本動物学会の論文
- 2004-11-25
著者
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Kubokawa Kaoru
Department Of Molecular Biology Ocean Research Institute The University Of Tokyo
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Mizuta Takanobu
Ocean Research Institute, University of Tokyo
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Morisawa Sachiko
Department of Anatomy, st. Mariana University School of Medicine
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Tanaka Hiroyuki
Misaki Marine Biological Station, The University of Tokyo
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Morisawa Masaaki
Misaki Marine Biological Station, The University of Tokyo
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Kubokawa kaoru
Misaki Marine Biological Station
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Morisawa M.
Misaki Mar. Biol. Stat., Grad. Sch. Sci., Univ. of Tokyo
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Mizuta T
Department Of Molecular Biology Ocean Research Institute The University Of Tokyo
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Mizuta Takanobu
Ocean Research Institute University Of Tokyo
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Kubokawa K
Department Of Molecular Biology Ocean Research Institute The University Of Tokyo
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Morisawa M
Misaki Marine Biological Station The University Of Tokyo
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Morisawa Masaaki
Misaki Marine Biological Station Graduate School Of Science The University Of Tokyo
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Morisawa S
St Marianna Univ. School Of Medicine Kanagawa Jpn
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Morisawa Sachiko
Department Of Anatomy St Mariannna University School Of Medicine
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Tanaka H
Misaki Marine Biological Station The University Of Tokyo
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Tanaka Hiroyuki
Misaki Marine Biological Station Grad. Sch. Sci. Univ Of Tokyo
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Mizuta Takanobu
Ocean Research Institute
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