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Assessment of Formalin-Fixed Bovine Larynx Asymmetry Using Geometric Morphometry
Arcesio Salamanca-Carreño1, Pere M Parés-Casanova2, Mauricio Vélez-Terranova3
1Faculty of Veterinary Medicine and Zootechnics, Cooperative University of Colombia, Villavicencio 50001, Colombia.
Thescientificworldjournal
|February 14, 2025
Summary
Cattle larynx shape differs between right and left sides and between sexes. This study is the first to identify larynx asymmetry in cattle, providing a basis for future research on vocalization.
Area of Science:
- Veterinary Anatomy
- Morphometrics
- Animal Science
Background:
- The larynx produces voice, but its morphology and size in cattle are poorly understood.
- Quantifying larynx shape asymmetry can offer insights into vocalization differences.
Purpose of the Study:
- To quantify the shape asymmetry of the cattle larynx postmortem using geometric morphometrics.
- To assess differences in larynx morphology between sexes and between right and left sides.
Main Methods:
- Geometric morphometrics applied to digitized landmark data from transverse laryngeal sections of 14 calves.
- Canonical Variate Analysis used to assess sex-based asymmetry.
Main Results:
- Significant differences in morphometric profiles were observed between the right and left larynx sides (p < 0.05).
- Significant differences were also found between sexes (p < 0.05).
- Directional asymmetry was detected between the right and left larynx sides.
Conclusions:
- This study is the first to detect and quantify larynx asymmetry in cattle.
- Larynx asymmetry exists between sexes and sides in cattle, potentially impacting vocalization.
- Further studies with larger sample sizes and adult animals are needed to validate these findings.
