Speaker
Fumio Shishikura
(Nihon University)
Description
Free-electron lasers (FELs) are valuable light sources for examining the biological effects of mid-infrared radiation on living organisms. We investigated the compound eyes of two arthropod species, crayfish (Procambarus clarkii, Crustacea) and crickets (Gryllus bimaculatus, Insecta), using LEBRA-FEL (3–6 μm) and KU-FEL (3.4–26 μm) as radiation sources. In both cases, the mid-infrared FELs generated electroretinograms suggesting a novel mid-infrared reaction in the animals’ visual organ function and indicating the universality of arthropod compound eye properties with respect to mid-infrared radiation. A remaining task for future investigation is how and when these two species use the detected mid-infrared reaction in their behavior.
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Author
Fumio Shishikura
(Nihon University)
Co-authors
Heishun Zen
(Kyoto University)
Hideaki Ohgaki
(Kyoto University)
Ken Hayakawa
(Nihon University)
Dr
Kyoko Nogami
(Nihon University)
Takeshi Sakai
(Nihon University)
Toshinari Tanaka
(Nihon University)
Prof.
Toshiteru Kii
(RIKEN SPring-8 Center)
Prof.
Yasushi Hayakawa
(Nihon University)
Dr
Yoshimasa Komatsuzaki
(Nihon University)
Dr
Yumiko Takahashi
(Nihon University)