The hyolaryngeal apparatus of three species of Scinax (Scinaxinae: Hylidae: Anura) and comparison with other Hylidae species
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Abstract
The larynx is an important morphological structure for sound production in frogs. Recently, high levels of variation in calls and their relation to the morphology of frogs in the family Hylidae, in addition to molecular data, have resulted in significant changes in the taxonomy of this family. However, there are few studies that describe the structures and processes of the hyoid, cricoid or arytenoid in hylid frogs. We studied the hyolaryngeal anatomy of both males and females of three species of the hylid genus Scinax (S. ruber, S. wandae and S. kennedyi) using differential and enzymatic clearing and staining methods. We describe the laryngeal anatomy of these species and compare to those of other hylids. We found that S. ruber has the largest cartilage arytenoid of any species of the family Hylidae studied to date. We show the laryngeal differences between Scinax species and the interspecific variability in the shapes of the projections among the arytenoid in the males of those species. The taxonomic characters described here can play a key role in differentiating these species from other members of Scinax, contributing to the knowledge of the species examined, and helping to differentiate them from other species, and to contributing also the natural history and phylogenetic relationships within the genus.
Cite this as
2017. The hyolaryngeal apparatus of three species of Scinax (Scinaxinae: Hylidae: Anura) and comparison with other Hylidae species. PeerJ Preprints 5:e3438v1 https://doi.org/10.7287/peerj.preprints.3438v1Author comment
This is a submission to PeerJ for review.
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Supplemental Information
APPENDIX 1. Previous studies of hyolaryngeal anatomy frogs in the family Hylidae
Additional Information
Competing Interests
The authors declare that they have no competing interests.
Author Contributions
Angélica Arenas Rodríguez conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.
Julio Mario Hoyos conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, reviewed drafts of the paper.
Animal Ethics
The following information was supplied relating to ethical approvals (i.e., approving body and any reference numbers):
Pontificia Universidad Javeriana, Facultad de Ciencias Programa de Posgrado, Doctorado en Ciencias Básicas
Data Deposition
The following information was supplied regarding data availability:
Nine specimens from the collection of the Museum of Natural History “Lorenzo Uribe, S.J.” of the Pontificia Universidad Javeriana (PUJ) were used (Table 1).
Funding
The Pontificia Universidad Javeriana (PUJ – Bogotá, Colombia) and the Departamento Administrativo de Ciencias, Tecnología e Innovación - COLCIENCIAS (Colombian government Institution - Convocatoria 511/2010) provided partial funding for this work. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
