Environmental parameter on the circannual rhythm of reproductive strategy in planarian
| Project/Area Number |
26440180
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Animal physiology/Animal behavior
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| Research Institution | Keio University |
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Principal Investigator |
Matsumoto Midori 慶應義塾大学, 理工学部(矢上), 准教授 (00211574)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | プラナリア / 無性生殖 / 有性生殖 / 概年リズム |
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| Outline of Final Research Achievements |
There are races in planarian with switching of reproduction modes of between asexual and sexual, depending on the change of season. To identify the environmental parameter to induce the switching of reproduction modes, we collected Dugeisa ryukyuensis regularly in Okinawa through one year and established some strains, which switch between sexual mode and asexual mode under the constant environment in the laboratory (called as switching mode). The worms of the switching mode were asexual mode in summer. When their living condition had been changed from summer condition to winter condition (15 C in temperature and 10L14D in photoperiod), their reproduction modes were switched from asexual to sexual.
Unfortunately, worms of switching modes could not maintained their characters during three years or more. Therefore, it is necessary to constantly established some new strains, which switch between sexual mode and asexual mode under the constant environment for this experiment.
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Report
(4 results)
Research Products
(17 results)
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[Journal Article] The identification of D-tryptophan as a bioactive substance for postembryonic ovarian development in the planarian Dugesia ryukyuensis.2017
Author(s)
Kazuya Kobayashi, Takanobu Maezawa, Hiroyuki Tanaka, Hiroyuki Onuki, Yurie Horiguchi, Hiroshi Hirota, Tetsuo Ishida, Kihachiro Horiike, Yasutoshi Agata, Manabu Aoki, Motonori Hoshi, Midori Matsumoto
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Journal Title
Scientific reports
Volume: 7
Issue: 1
Pages: 45175-45175
DOI
Related Report
Peer Reviewed / Open Access
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[Presentation] Comprehensive screening of peptide hormones that induce planarian sexualization2014
Author(s)
Sota Takagi , Yuki Kouda , Hanae Nodono , Yoshimasa Aoto, Yoshitake, Kazutoshi , Gojyobori, Takashi , Kengo Sato, Yasubumi Sakakibara, Midori Matsumoto
Organizer
The first Asian PlanNet meeting in Hong Kong
Place of Presentation
Hong Kong大学（中国）
Year and Date
2014-05-07 – 2014-05-09
Related Report
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