両生類の2系統の嗅覚系における系統発生学的側面

DOI 日本農学文献記事索引 Web Site Web Site 被引用文献7件 参考文献109件
  • TANIGUCHI Kazumi
    Laboratory of Veterinary Anatomy, School of Veterinary Medicine, Kitasato University
  • SAITO Shouichiro
    Laboratory of Veterinary Anatomy, Faculty of Applied Biological Sciences, Gifu University
  • OIKAWA Toshihiro
    Department of Pharmacovigilance, Torii Pharmaceutical Co., Ltd.
  • TANIGUCHI Kazuyuki
    Laboratory of Veterinary Anatomy, Faculty of Agriculture, Iwate University

書誌事項

タイトル別名
  • Phylogenic Aspects of the Amphibian Dual Olfactory System
  • Anatomy: Phylogenic aspects of the amphibian dual olfactory system

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The phylogenic significance of the subdivision of dual olfactory system is reviewed mainly on the basis of our findings by electron microscopy and lectin histochemistry in the three amphibian species. The dual olfactory system is present in common in these species and consists of the projection from the olfactory epithelium (OE) to the main olfactory bulb (MOB) and that from the vomeronasal epithelium (VNE) to the accessory olfactory bulb (AOB). The phylogenic significance of subdivisions in the dual olfactory system in the amphibian must differently be interpreted. The subdivision of the MOB into its dorsal region (D-MOB) and ventral region (V-MOB) in Xenopus laevis must be attributed to the primitive features in their olfactory receptors. The middle cavity epithelium lining the middle cavity of this frog possesses both ciliated sensory cells and microvillous sensory cells, reminding the OE in fish. The subdivision of the AOB into the rostral (R-AOB) and caudal part (C-AOB) in Bufo japonicus formosus must be regarded as an advanced characteristic. The lack of subdivisions in both MOB and AOB in Cynops pyrrhogaster may reflect their phylogenic primitiveness. Since our lectin histochemistry to detect glycoconjugates expressed in the olfactory pathway reveals the subdivisions in the dual olfactory system in the amphibian, the glycoconjugates may deeply participate in the organization and function of olfactory pathways in phylogeny.<br>

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