Kobayashi S, Arai S, Tomo S, Shimoda T, Shimamura A, Yamada H
Okajimas Folia Anat Jpn. 1989 Mar;65(6):413-27. doi: 10.2535/ofaj1936.65.6_413.
The tongue and lingual papillae of the Japanese Insectivora, the Shinto shrew (Sorex caecuiens saevus), the long-clawed shrew (S. unguiculatus), the dsinezumi shrew (Crocidura dsinezumi dsinezumi) and the Japanese water shrew (Chimarrogale himalyica platycephala), were observed by scanning electron microscope. The tongue of these animals had two vallate papillae. In two species of the Sorex a papilla in the vallate papilla was surrounded by two separated trenches, but in the other species it was surrounded by only a continuous trench and a clear vallum. The fungiform papillae in the Sorex were less developed than those of the other species. In the Sorex and Crocidura, there was no filiform papilla on the lingual apex. These genera, however, have papillary projections in the margin of the lingual apex. The results of this investigation suggest that the Sorex and Crocidura indicate an ancient form of the mammalian tongue. These characters, furthermore, were compared among seven species in six genera added three species observed by Kobayashi et al. (1983) to this study.
利用扫描电子显微镜对日本食虫目动物的舌头和舌乳头进行了观察，这些动物包括神道鼩鼱（Sorex caecuiens saevus）、长爪鼩鼱（S. unguiculatus）、日本缺齿鼩（Crocidura dsinezumi dsinezumi）和日本水鼩（Chimarrogale himalyica platycephala）。这些动物的舌头有两个轮廓乳头。在两种鼩鼱中，轮廓乳头中的一个乳头被两条分开的沟包围，但在其他物种中，它只被一条连续的沟和一个明显的嵴包围。鼩鼱的菌状乳头比其他物种的发育程度低。在鼩鼱和日本缺齿鼩中，舌尖上没有丝状乳头。然而，这些属在舌尖边缘有乳头状突起。本研究结果表明，鼩鼱和日本缺齿鼩显示出哺乳动物舌头的一种古老形态。此外，将本研究中观察到的3个物种与小林等人（1983年）观察到的6个属中的7个物种的这些特征进行了比较。
