2009 Fiscal Year Final Research Report
Identification of fresh and seawater specific molecular markers in teleosts
| Project/Area Number |
20780147
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
General fisheries
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| Research Institution | St.Marianna University School of Medicine |
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Principal Investigator |
HIROI Junya St.Marianna University School of Medicine, 医学部, 准教授 (20350598)
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| Project Period (FY) |
2008 – 2009
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| Keywords | 魚類 / 環境適応 / 浸透圧調節 / 淡水 / 海水 / 塩類細胞 / イオントランスポーター |
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| Research Abstract |
Euryhaline fish can live in both fresh water and seawater by means of specialized "mitochondrion-rich cells (MRCs)". Although MRCs are considered to be involved in both ion uptake in fresh water and ion secretion in seawater, the ion-uptake mechanism has been controversial for over 30 years. In this study, we identified a novel freshwater-type ion transporter in tilapia MRCs and proposed a new ion uptake model. We also found that ion uptake mechanisms vary among fish species. These findings are opening a new window for the study on fish osmo- and iono-regulation.
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[Journal Article] Different hatching strategies in embryos of two species, pacific herring Clupea pallasii and Japanese anchovy Engraulis japonicus, that belong to the same order Clupeiformes, and their environmental adaptation2009
Author(s)
Kawaguchi M, Fujita H, Yoshizaki N, Hiroi J, Okouchi H, Nagakura Y, Noda T, Watanabe S, Katayama S, Iwamuro S, Nishida M, Iuchi I, Yasumasu S
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Journal Title
Journal of Experimental Zoology Part B: Molecular and Developmental Evolution 312
Pages: 95-107
Peer Reviewed
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