Daily Incremental Lines in Sika Deer (Cervus nippon) Dentine

Journal of Veterinary Medical Science

Masatsugu SUZUKI²  Noriyuki OHTAISHI²  Yasuko IINUMA²  Yuka TANAKA-NAKAMURA²  Mayumi YOKOYAMA¹ 

[1] Division of Environmental Management, Museum of Nature and Human Activities;Laboratory of Wildlife Biology, Graduate School of Veterinary Medicine, Hokkaido University

关键词: Cervus nippon;    circadian rhythm;    dentine;    fluorescent labeling;    incremental line;   

DOI  :  10.1292/jvms.64.791

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(19)Cited-By(3)This work was designed to observe the dentine incremental lines of the sika deer (Cervus nippon) fawns and to investigate their periodicity using the chronological labeling method with fluorochromes. The incremental lines were observed in decalcified specimens stained by Bodian's silver technique, and the fluorescence-labeled lines were observed in undecalcified and ground specimens. In the silver stained specimens, there were two types of lines, deeply stained thick lines and faintly stained minute regular incremental lines. The intervals and staining intensities of the deeply stained thick lines were very similar to those of the fluorescence-labeled lines in the ground specimens obtained from the same tooth, and hence, it appeared that the both lines were identical. The number of minute incremental lines between the deeply stained thick lines was the same as that of days between the time when each fluorescent labeling injection was made. Therefore, it seemed that each minute incremental line was formed each day. The possibility of age estimation in days using diurnal dentine increments was discussed.

【 授权许可】

Unknown