2011 Fiscal Year Final Research Report
Evolution of the somatotopic map in the vertebrate hindbrain
| Project/Area Number |
22770218
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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 |
Developmental biology
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| Research Institution | Ehime University |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2011
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| Keywords | 進化 / 脳・神経 / 発生・分化 / 遺伝子 / 解剖学 |
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| Research Abstract |
To identify the evolutionary process of somatotopic organization in vertebrate trigeminal system, we compared trigeminal nerve organization in developing turtle, chick, and mouse. We found that, while mandibular and maxillary branch somatotopy is conserved in turtle, these branches in the chick are not strictly spatially segregated, and their position in the trigeminal tract is inversed, as compared to mouse. Furthermore, by using this specific marker in combination with Hoxa2 and axonal tracings from the periphery, we mapped the position of chick PrV in rhombomere(r) 1, unlike mouse PrV that mainly maps in r2-r3. Thus, somatotopy of trigeminal ganglion and nerve organization is only partially conserved through amniote evolution, possibly in relation to the modification of facial somatosensory structures and morphologies.
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[Journal Article] Nervous system disruption and concomitant behavioral abnormality in early hatched pufferfish larvae exposed to heavy oil2012
Author(s)
M. Kawaguchi, Y. Sugahara, T. Watanabe, K. Irie, M. Ishida, D. Kurokawa, S. Kitamura, H. Takata, I. C. Handoh, K. Nakayama, and Y. Murakami
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Journal Title
Environ. Sci. Pollut. Res
Volume: (in press)
Peer Reviewed
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