ABSTRACT

The Andean Cordilleras of Colombia, especially the Cordillera Occidental, are among the areas with the highest diversity of Pristimantis frogs in the world. Within the Cordillera Occidental, the Serranía de los Paraguas is famous for its high diversity of sympatric species of Pristimantis frogs. In this study, we investigated acoustic frequency segregation in five sympatric and syntopic species of the genus Pristimantis inhabiting this Serranía. It is important to point out that three of the five species’ calls are described for the first time: Pristimantis brevifrons, P. ptochus, and P. silverstonei. Our results showed that acoustic frequency segregation occurs among these five Pristimantis species. Another notable result was the inverse relationship between dominant frequency and male body size, which was corroborated in all species except in P. alius. Finally, we suggested that for improving our knowledge on species coexistence in Pristimantis, future research should also focus on species history and character evolution, given that the evolutionary history is also fundamental for explaining species coexistence.

摘要

哥伦比亚的安第斯山脉，特别是西科迪勒拉山脉，是世界上普里斯蒂曼蒂斯青蛙多样性最高的地区之一。在西科迪勒拉山脉内，巴拉瓜山脉以其高度多样性的同域普里斯蒂曼蒂斯青蛙物种而闻名。在这项研究中，我们研究了居住在塞拉尼亚的五种同域和同域物种的声频分离。需要指出的是，这五个物种中的三个叫声是首次被描述：Pristimantis brevifrons、P. ptochus和P. silverstonei。我们的结果表明，这五种Pristimantis之间发生了声频分离物种。另一个值得注意的结果是优势频率与雄性体型之间的反比关系，这在除P. alius之外的所有物种中都得到了证实。最后，我们建议，为了提高对Pristimantis物种共存的认识，未来的研究还应关注物种历史和性状进化，因为进化历史也是解释物种共存的基础。