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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
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Your Position :Home->Past Journals Catalog->2011 Vol.30 No.3

Pharyngeal Tooth Succession and Anatomical Observations on the Tooth Germ of Koi Carps
Author of the article:WANG En-ping, HUANG Ning
Author's Workplace:(West China College, Hospital of Stomatology, Sichuan University, Chengdu 610041, China)
Key Words: koi carp; pharyngeal tooth; tooth germ; succession of pharyngeal tooth; electron scanning microscope
Abstract:The structure of pharyngeal tooth, tooth germs and their succession in the koi carp were observed. And the fine structure of pharyngeal teeth under an electron scanning microscope was also observed. We found there was close relationship between the succession of pharyngeal tooth and tooth germs. We found three succession types through anatomical observation: synchronous succession of different pharyngeal teeth happens on both left and right sides; synchronous succession of A2 and A3 happens on the same side; succession of only one tooth happens on one side. The succession is consistently, the process is that: the bone supporting tissues of the replaced pharyngeal tooth begins its absorption from the foramen on the base bone-of the same position the tooth germ migrates to its place-the old tooth sheds and supporting tissues for the new tooth become bone. According to these findings, we thought that the tooth germ development is an initiation factor that initiates pharyngeal tooth succession in koi carps. And there is close relationship between koi carp and wild-type carps.
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