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Validation of daily otolith increment formation in the larval myctophid fish Diaphus slender‐type spp. |
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| Authors: | M Moku† A Hayashi‡ K Mori§ Y Watanabe‡ |
| Institution: | Tohoku National Fisheries Research Institute, 3‐27‐5 Shinhama, Shiogama, Miyagi 985‐0001, Japan;, Ocean Research Institute, The University of Tokyo, 1‐15‐1 Minamidai, Nakano, Tokyo 164‐8639, Japan and; Hokkaido National Fisheries Research Institute, 116 Katsurakoi, Kushiro, Hokkaido 085‐0802, Japan |
| Abstract: | The marginal increment growth in sagittal otoliths of the myctophid larvae Diaphus slender‐type spp. collected in the north‐eastern East China Sea was examined based on specimens collected at different times of the day. The calcification of the incremental zone began after midnight and took place throughout the day, and the discontinuous zone was formed only around midnight. These results indicate that otolith increments are formed daily. |
| Keywords: | daily increment Diaphus slender‐type spp larvae myctophid fishes otolith validation |