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The Development of Two Species of Tetilla (Demosponge)
http://hdl.handle.net/10083/2262
http://hdl.handle.net/10083/2262bbd5d378-2526-4d9a-a19c-c9d94b1d5dd8
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
KJ00004829922.pdf (15.2 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2008-04-30 | |||||
| タイトル | ||||||
| タイトル | The Development of Two Species of Tetilla (Demosponge) | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | departmental bulletin paper | |||||
| 著者 |
Watanabe, Yoko
× Watanabe, Yoko |
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| 著者(ヨミ) | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 70137 | |||||
| 姓名 | ワタナベ, ヨウコ | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 1. The fertilization and development of two species of oviparous sponges, Tetilla serica and Tetilla japonica, were described. The results of this study show that these two species have common features in their development, but this is very unusual as compared with that of other sponges. 2. The mature egg is released through the maternal osculum and fertilized outside the body. After fertilization, it immediately adheres to the substratum without a free-swimming larval period and develops directly ; this is not observed in other sponges. 3. These species have radiating fiber bundle on the egg surface, which are taken into the perivitelline space after fertilization. At this time the egg performs a sepcial type of rotation which is not known in any other eggs. 4. The radiating fiber bundles taken into the perivitelline space and the space itself will be incorporated into the larva as the development proceeds. This accessory covering of the egg is imagined to be the structure which carries substance to the larva from the maternal body, as has observed in other sponges. 5. The larvae of two species of Tetilla do not d\ ifferentiate the columnar flagellated cell layer, characteristic of parenchymella larva, but differentiate directly adult ectosome and choanosome from undifferentiated cells of morula. 6. When the larva forms an aquiferous system and skeleton and develops to be a rhagon larva, alternation of body symmetry is seen in T. serica, not in T. japonica. 7. At present stage of study, the development of Tetilla seems very unique among the sponges, but with the progress of research on oviparous sponges, the relation within the Demosponges or the phylogenetic position in the Porifera of these species may possibly have to be reconsidered. |
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| 書誌情報 |
お茶の水女子大學自然科學報告 巻 29, 号 1, p. 71-106, 発行日 1978-07 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 00298190 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00033958 | |||||
| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
| 形態 | ||||||
| 15210753 bytes | ||||||
| 日本十進分類法 | ||||||
| 主題Scheme | NDC | |||||
| 主題 | 400 | |||||
| 出版者 | ||||||
| 出版者 | お茶の水女子大学 | |||||
| 資源タイプ | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 紀要論文 | |||||
| 資源タイプ・ローカル | ||||||
| 紀要論文 | ||||||
| 資源タイプ・NII | ||||||
| Departmental Bulletin Paper | ||||||
| 資源タイプ・DCMI | ||||||
| text | ||||||
| 資源タイプ・ローカル表示コード | ||||||
| 03 | ||||||
| 所属 | ||||||
| Department of Biology, Ochanomizu University:The Tateyama Marine Laboratory of Ochanomizu University | ||||||
