岡山県北の河川に生息するプラナリアの生殖様式の季節変化

URI http://repository.tsuyama-ct.ac.jp/metadata/937
FulltextURL
Title
岡山県北の河川に生息するプラナリアの生殖様式の季節変化
Title Alternative
Seasonal changes of reproductive modes in freshwater planarians in the river of the north part of Okayama prefecture
Author
著者 前澤 孝信
著者(別表記) Maezawa Takanobu
著者 油野木 紫音
著者(別表記) Yunoki Shion
著者 土居 真司
著者(別表記) Doi Shinji
著者 岩佐 典和
著者(別表記) Iwasa Norikazu
著者 磯山 元輝
著者(別表記) Isoyama Genki
著者 小野 航
著者(別表記) Ono Wataru
著者 佐藤 和紀
著者(別表記) Sato Kazuki
著者 春名 亮
著者(別表記) Haruna Ryo
著者 藤田 治希
著者(別表記) Fujita Haruki
Abstract

Some freshwater planarians, especially in the genus Dugesia, comprise of at least three races with respect to the reproductive mode: asexual race, sexual race, and physiological race. In the asexual race, worms reproduce by fission without sexual organs. In the sexual race, worms have hermaphroditic sexual organs, and copulate and then produce cocoons filled with several fertilized eggs. They are not likely to fission. In the physiological race, worms convert between asexual and sexual reproduction seasonally. In this study, we demonstrated that the physiological race of the planarian Dugesia japonica exist in the river of the north part of Okayama prefecture in Japan.

Subject
460 Biology
Keyword
Freshwater planarian
Reproductive mode
Okayama prefecture
Note

論文

Publish Date
2018-03-30
Publication Title
津山工業高等専門学校紀要
Publication Title Alternative
Bulletin of National Institute of Technology, Tsuyama College
Volume
59
Start Page
51
End Page
54
ISSN
0287-7066
NCID
AN00149351
Publisher
津山工業高等専門学校
Contents Type
Departmental Bulletin Paper
language
Japanese
File Version
publisher