Analysis of early developments in a viviparous fish Xenotoca eiseni
| Project/Area Number |
24657161
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Evolutionary biology
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| Research Institution | Kyoto University |
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Principal Investigator |
IIDA Atsuo 京都大学, 再生医科学研究所, 助教 (90437278)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 胎生 / 魚類 / 繁殖 / 初期発生 / アポトーシス |
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| Research Abstract |
I analyzed a mechanism of non-mammalian viviparous system using a live-bearer teleost Xenotoca eiseni. The viviparous fish doesn't possess defined analog of fetal organs corresponding to a placenta and an umbilical cable of mammals. They have unique ribbon-like structure elongated from a perianal. This structure is presumed to be a functional analog of the fetal organ of mammals, which plays a role for absorption of maternal nutrients. I found that the ribbon-like structure of the fetal fry is disrupted by programed cell death in perinatal stage. Such regression mechanism has not reported in mammals. It was presumed to be a unique system in viviparous fish.
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Report
(3 results)
Research Products
(4 results)
