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Roles of actin networks in peristaltic squeezing of sperm bundles in Bombyx mori

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タイトル: Roles of actin networks in peristaltic squeezing of sperm bundles in Bombyx mori
著者: Sahara, Ken 著作を一覧する
Kawamura, Naoko 著作を一覧する
キーワード: actin 
eupyrene sperm
Lepidoptera
peristaltic squeezing
phalloidin
apyrene sperm
発行日: 2003年
出版者: Wiley-Liss, Inc.
誌名: Journal of Morphology
巻: 259
号: 1
開始ページ: 1
終了ページ: 6
出版社 DOI: 10.1002/jmor.10168
抄録: Two types of sperm are produced in the silkworm, Bombyx mori. Nucleate eupyrene sperm is an ordinary sperm that contributes to fertilization, while anucleate apyrene sperm is considered to play important roles in assisting eupyrene sperm. At the very late stage of spermatogenesis, a phenomenon called peristaltic squeezing occurs in both types of sperm, whereby cytoplasm of the eupyrene and nuclei of the apyrene sperm are discarded from the posterior end, forming matured sperm. In this study, rhodamine-phalloidin staining for actin was applied to sperm bundles. Before the start of peristaltic squeezing, actin filament networks are spread on the cyst cells and constrictions by the networks appear in several places of the bundles. Actin particles, which are later recognized as circlets, are localized within the bundles. Squeezing action by the networks occurs from the anterior region and transfers toward the posterior, eliminating cytoplasm together with circlets from the posterior end. It seems that actin filaments contribute to the peristaltic squeezing of the sperm bundles in Bombyx mori. J. Morphol. 259:1-6, 2004.
Relation (URI): http://www.interscience.wiley.com/
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/889
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 佐原 健

 

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