Vertebrate Zoology 64(2): 215-220, doi:

Comparison of vomerine tooth rows in juvenile and adult Hynobius guabangshanensis (Urodela: Hynobiidae)

Jianli Xiong^‡, Xiuying Liu, Liyan Qing, Xiaomao Zeng

‡ Henan University of Science and Technology, Luoyang, China

Corresponding author: Jianli Xiong ( xjlpanda@126.com )

This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Citation: Xiong J, Liu X, Qing L, Zeng X (2014) Comparison of vomerine tooth rows in juvenile and adult Hynobius guabangshanensis (Urodela: Hynobiidae). Vertebrate Zoology 64(2): 215-220

Abstract

In this note, the vomerine tooth rows of juveniles and adults H. guabangshanensis are described and compared. The vomerine tooth rows are long and posteriorly directed, and arranged in a V-shape in adults while short and slightly arched, parallel to the premaxilla and maxilla in juveniles. The vomerine tooth rows of juveniles are similar to the aquatic salamanders, which feed by suction in water, and the vomerine tooth rows function in hindering escape of prey. The vomerine tooth rows of adults are resemble with terrestrial salamanders, which use inertial feeding or protruding tongue to capture prey, and the vomerine tooth rows function in helding and delivering the prey. Hence, the differences of the vomerine tooth rows reflect the differences of life habit, feeding modes and function among different development peroid.

Keywords

Hynobiid salamander, ontogeny, morphology, evolution.