コヤス カズヒロ   KOYASU Kazuhiro
  子安 和弘
   所属   歯学部 解剖学講座
   職種   講師
言語種別 英語
発行・発表の年月 2012/07
形態種別 学術雑誌
査読 査読あり
標題 Maxillary tooth size variability and influence of hypdontia in the Suncus murinus.
執筆形態 共著
掲載誌名 Mammalia
出版社・発行元 Walter de Gruyter GmbH & Co. KG
巻・号・頁 76(2012),pp.315-322
著者・共著者 Jogahara, T., Koyasu, K. and Oda, S.-i.
概要 Dry cranila specimens from 184 Suncus murinus from the wild Nagasaki (normal dentition) population and laboratory strains of KAT (normal dentition), NAG (missing I3) and TESS (missing P3) were examined to quantify the relationship between size variation and the influence of tooth absence in maxillary dentition. We first measured and analyzed maxillary tooth size variability in normal S. murinus based on the coefficient of variation (CV). Molariform teeth showed lower CVs, whereas unicuspid teeth showed relatively high CVs in shrews with normal dentitions. In this species, molariform teeth have complex cusps and clear ridges, whereas unicuspid teeth have no occlusal surface. In particular, I3 and P3 had relatively high CVs, and these teeth were commonly absent. We also examined the relationship between tooth size and number in this species.
DOI 10.1515/mammalia-2011-0122
ISSN 1864-1547