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Daily growth increments in otoliths of wild-caught honmoroko Gnathopogon caerulescens |
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| Authors: | Takeshi Kikko Daisuke Ishizaki Taiga Yodo Shizuo Aino Kunihiko Kuwamura Haruo Okamoto Morihito Nemoto Kazuki Yoneda Nobuyuki Oue Akihisa Sakai Yasuhiro Fujioka Yoshiaki Kai Takuya Sato Kouji Nakayama |
| Affiliation: | 1. Shiga Prefectural Fisheries Experimental Station, Hikone, Shiga, Japan;2. Graduate School of Bioresources, Mie University, Tsu, Mie, Japan;3. Maizuru Fisheries Research Station, Field Science Education and Research Center, Kyoto University, Nagahama, Maizuru, Kyoto, Japan;4. Department of Biology, Graduate School of Science, Kobe University, Kobe, Japan;5. Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Kyoto, Japan |
| Abstract: | Otolith growth increments in wild-caught alizarin complex one (ALC)-marked honmoroko Gnathopogon caerulescens were examined to verify the veracity of the age determination method in cyprinids. ALC-marked G. caerulescens recaptured from their natural environment had lapilli increment counts outside the ALC ring mark that had formed on a daily basis during the juvenile stage. This apparently being the first direct evidence of daily periodicity of otolith increment formation in wild-caught cyprinids. |
| Keywords: | ALC cyprinidae daily increments Gnathopogon caerulescens mark–recapture otolith |