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首页> 外文期刊>Bulletin of the National Museum of Nature and Science >Dental Anomalies in Four Mole Species of the Genus Mogera (Insectivora, Talpidae) from Japan
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Dental Anomalies in Four Mole Species of the Genus Mogera (Insectivora, Talpidae) from Japan

机译：来自日本的Mogera属（Insectivora，Talpidae）的四种痣物种的牙齿异常

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摘要

Dental anomaly was examined in four species of Japanese moles of the genus Mogera collected from several localities. Any anomalies were observed when more than 30 specimens were considered in each locality. The frequency of dental anomalies varied 1.6% to 17.5 % among localities. Among species, observed anomalies were the highest in M. tokudae besides its smallest sample number (N=57) and the lowest in M. imaizumii (1.8%). Observed dental anomalies were categorized as absent, supernumerary, and connate teeth, and most of them were found on the pre-molar region. Tooth absence was observed on first and second premolars in all four species. The supernumerary teeth were observed only in Kagawa population of M. wogura. Most of them were single additional tooth, but one specimen had three excessive teeth positioned lingually on the right upper jaw side. Only one case with supernumerary canines in both upper jaw sides, was reported at first in talpid species. The connate teeth were not frequent but seen in M. tokudae and M. wogura. Our results indicate that there are interspecific and local differences of dentition, possibly controlled by a genetic system.
机译：检查了从几个地方收集的四种Mogera日本mole鼠的牙齿异常情况。当在每个位置考虑30个以上的样本时，观察到任何异常。不同地区的牙齿异常发生率在1.6％至17.5％之间。在物种中，除了最小的样本数（N = 57）以外，观察到的异常在德古氏支原体中最高，在伊美支原体最低（1.8％）。观察到的牙齿异常分类为不存在，多余的牙齿和合生的牙齿，并且大多数在磨牙前区域发现。在所有四个物种的第一和第二前磨牙中均观察到牙齿缺失。多余的牙齿仅在香川县的M. wogura人群中观察到。其中大多数是单颗额外的牙齿，但一个标本的右上颌侧舌侧有三颗多余的牙齿。最初在滑石物种中仅报告了一个在上颌两侧有多余犬齿的病例。先天牙齿不常见，但见于德古丁肌和wogura中。我们的结果表明，牙列存在种间和局部差异，可能受遗传系统控制。

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  • 作者

    Shin-ichiro Kawada; Hideki Endo; Sen-ichi Oda; Kazuhiro Koyasu;

  • 作者单位

    Department of Zoology, National Museum of Nature and Science, 3-23-1, Hyakunin-cho, Shinjuku-ku, Tokyo, 169-0073 Japan;

    The University Museum, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-0033 Japan;

    Department of Zoology, Okayama University of Science, 1-1, Ridai-cho, Kita-ku, Okayama-shi, Okayama, 700-0005 Japan;

    Department of Anatomy, School of Dentistry, Aichi-Gakuin University, 1-100, Kusumoto-cho, Chikusa-ku, Nagoya-shi, Aichi, 464-8650 Japan Dental Science Museum, Aichi-Gakuin University, 1-100, Kusumoto-cho, Chikusa-ku, Nagoya-shi, Aichi, 464-8650 Japan;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    mogera; supernumerary teeth; oligodonty; connate teeth; dental formula;

    机译：莫格拉多余的牙齿寡头症牙齿合生牙科配方;

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