Abstract：
There is an increased interest in the evolution and development of newts from the genus Triturus because: (1) morphological differentiation among the nine constituent species largely corresponds to different ecological preferences, (2) hybridization between different species pairs has various evolutionary outcomes in terms of life history traits and morphology, and (3) the genus expresses a balanced lethal system that causes arrested growth and death of half of the embryos. These features provide natural experimental settings for molecular, morphological, and life-history studies. Therefore, we produce a staging table for the Balkan crested newt (T. ivanbureschi). We provide detailed descriptions of 34 embryonic stages based on easily observable and interpretable external morphological characters, to ensure reproducibility. Compared with previous staging tables for Triturus, we include a vastly increased sample size and provide high-resolution photographs in lateral, ventral, and dorsal view, complemented by videos of specific developmental periods, and accompanied by detailed explanations on how to delineate the specific stages. Our staging table will serve as a baseline in comparative studies on Triturus newts: an emerging model system in evolutionary and developmental studies.
摘要：
人们对Triturus属new的进化和发展越来越感兴趣，因为：（1）九个组成物种之间的形态差异在很大程度上对应于不同的生态偏好，（2）不同物种对之间的杂交在生活史特征和形态上具有不同的进化结果，（3）该属表达了一个平衡的致死系统，该系统导致一半胚胎的生长停滞和死亡。这些功能为分子提供了自然的实验设置，形态学,和生活史研究。因此,我们为巴尔干凤头new（T.ivanbureshi).我们根据易于观察和解释的外部形态特征提供了34个胚胎阶段的详细描述，以确保再现性。与以前的Triturus暂存表相比，我们包括大幅增加的样本量，并提供横向的高分辨率照片，腹侧,和背面视图，辅以特定发育期的视频，并附有如何划分具体阶段的详细说明。我们的分期表将作为Triturusnew的比较研究的基准：进化和发展研究中的新兴模型系统。
