Abstract #1193

fMRI Analysis of the Olfactory Responses to Home-Stream Water in Sockeye Salmon

Hiroshi Bandoh¹, Ikuhiro Kida², Hiroshi Ueda^1,3

¹Division of Environmental Science Development, Graduate School of Environmental Science, Hokkaido University, Sapporo, Hokkaido, Japan; ²Integrated Neuroscience Research Team, Tokyo Institute of Pschiatry, Setagaya-ku, Tokyo, Japan; ³Laboratory of Aquatic Ecosystem Conservation, Field Science Center for Northern Biosphere, Hokkaido University, Sapporo, Hokkaido, Japan

The odor-information processing involved in olfactory imprinting and homing of the home-stream odor in the central nervous system of salmon has not been completely elucidated. In this study, to investigate this information-processing mechanism, we used BOLD fMRI to measure the response to home-stream water in the olfactory bulb and telencephalon of sockeye salmon. The presence of BOLD signals in the dorsal area of the telencephalon indicated that the odor information for home-stream water was processed in a specific area in the telencephalon of sockeye salmon.