Comparison of the color vision and spectral sensitivity of three flatfish species of different ecotypes,and application to selective fishing methods |
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Authors: | Keishi Matsuda Shinsuke Torisawa Tomonori Hiraishi Katsutaro Yamamoto |
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Institution: | (1) Graduate School of Fisheries Sciences, Hokkaido University, Hakodate Hokkaido, 041-8611, Japan;(2) Faculty of Agriculture, Kinki University, Nara 631-8505, Japan;(3) Japan International Research Center for Agricultural Sciences, Ohwashi, Tsukuba Ibaraki, 305-8686, Japan |
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Abstract: | In this study, we determined the color vision and spectral sensitivity of pointhead flounder, slime flounder, and red halibut
by recording electrophysiological S-potentials from isolated retinas; this basic data was collected to aid the selection of
appropriate colors and effective wavelengths for selective fishing gear for sustainable fisheries. Four kinds of L-response
and one C-response were recorded in the pointhead flounder and red halibut. Two kinds of L-response were recorded in the slime
flounder. The occurrence of a C-response indicates the possession of color vision. The C-responses show that the pointhead
flounder has superior distinction from blue to yellow, and red halibut has superior distinction from blue and green to red.
The most frequently recorded L-responses indicate high spectral sensitivity at 544 nm in pointhead flounder and 518 nm in
slime flounder and red halibut. All recorded L- and C-responses indicate sensitivity to ultraviolet wavelengths. |
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Keywords: | Color vision Electrophysiology Flatfish Spectral sensitivity S-Potentials |
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