2017 Fiscal Year Final Research Report
Neural basis of reproductive isolation: Neural circuits for courtship and rejection.
| Project/Area Number |
15K18335
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Neurophysiology / General neuroscience
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| Research Institution | University of Toyama |
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Principal Investigator |
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| Research Collaborator |
YAMAMOTO NAOYUKI
HAGIO HANAKO
MATSUMOTO KOJI
NAKAYAMA KEI
IZUMI HIRONORI
MURAKAMI YASUNORI
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 生殖前隔離 / c-fos / 行動生態学 / 魚類の脳 / 次世代シークエンサー |
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| Outline of Final Research Achievements |
To elucidate the neural mechanism of reproductive isolation, we cast a spotlight on a Gobiida small fish, freshwater goby. Male gobies could discriminate females just with visual perception, and choose their reaction correctly between courtship and threatening behaviors. Expression patterns of c-fos, a marker for neural activity, revealed that the courtship behavior activated the ventral part of ventral telencephalon and the preoptic area, while the threatening induced the activity of the intermediate pituitary, suggesting that several brain regions related to the behavioral output show different responses between two behaviors. The telencephalon of freshwater goby exhibits some remarkable features; a complicated structure of the lateral part of dorsal telencephalon, the visual center of teleosts, and a striatum-like ventral telencephalic component. In future, we will examine whether these characteristic brain regions work as the center for behavioral selection.
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| Free Research Field |
比較神経解剖学、行動生態学
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