ダウンロード数: 356
このアイテムのファイル:
ファイル | 記述 | サイズ | フォーマット | |
---|---|---|---|---|
zsj.29.481.pdf | 66.51 kB | Adobe PDF | 見る/開く |
タイトル: | Evolutionary meaning of non-synchronous medusa release and spawning in the most advanced bivalve-inhabiting hydrozoan, Eugymnanthea japonica. |
著者: | Kubota, Shin ![]() |
著者名の別形: | 久保田, 信 |
キーワード: | bivalve-inhabiting hydrozoan spawning time ephemeral medusa medusa release transitional evolutionary state |
発行日: | Aug-2012 |
出版者: | Zoological Society of Japan |
誌名: | Zoological science |
巻: | 29 |
号: | 8 |
開始ページ: | 481 |
終了ページ: | 483 |
抄録: | Circadial spawning times of medusa of the bivalve-inhabiting hydrozoans Eugymnanthea japonica Kubota and Eutima japonica Uchida are confirmed to be morning (possibly sunrise) for the former species and night for the latter. Eugymnanthea, with small, short-lived, univoltine medusae, seems to have evolved from a form similar to Eutima japonica, with larger, longer-lived, multivoltine medusae; the morning spawning of medusae in Eugymnanthea may therefore be a newly evolved trait. Medusa release from polyps and spawning of medusae are not synchronous in Eugymnanthea japonica. This non-synchrony may represent an evolutionarily transitional state leading to the most advanced state, synchrony of these two reproductive events, as in certain other ephemeral hydrozoan medusae. |
著作権等: | © 2012 Zoological Society of Japan |
URI: | http://hdl.handle.net/2433/178654 |
DOI(出版社版): | 10.2108/zsj.29.481 |
PubMed ID: | 22873804 |
出現コレクション: | 学術雑誌掲載論文等 |
![](/dspace/image/articlelinker.gif)
このリポジトリに保管されているアイテムはすべて著作権により保護されています。