Tooth morphology, implantation and replacement system of Hoplias malabaricus (Teleostei, Characiformes, Erythrinidae)

Brazilian Journal of Biology

Rm. Hassunuma¹  Acm. Stipp¹  Mtcd. Heubel¹  Tm. Cestari¹  Ds. Ceolin¹  Rsb. Nakamura¹  Pho. Rosseti¹  Gf. Assis¹ 

关键词: tooth;    Traíra;    Hoplias malabaricus;    Erythrinidae;    morphology;    dente;    Traíra;    Hoplias malabaricus;    Erythrinidae;    morfologia;   

DOI  :  10.1590/S1519-69842013000400014

来源: SciELO

【 摘 要 】

The oropharyngeal cavity of Hoplias malabaricus, an ichthyophagous freshwater fish, is anatomically adapted to predation. Macroscopic and microscopic analyses were conducted in order to study the morphology and system of implantation and replacement of teeth. The results showed that this teleost has conical and caniniform teeth, with an orthodentin crown covered by an enameloid cap and a vascularised orthodentin in the root. With regard to the implantation system, there is a junction between the tooth and the bone tissue, as a typical physiological dental ankylosis. The teeth are replaced by a resorption process of multinucleated giant cells that actively eliminate the dentin and bone tissue.

【 授权许可】

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