Variations in cochlea shape reveal different evolutionary adaptations in primates and rodents.

ABSTRACT: The presence of a coiled cochlea is a unique feature of the therian inner ear. While some aspects of the cochlea are already known to affect hearing capacities, the full extent of the relationships between the morphology and function of this organ are not yet understood-especially when the effect of body size differences between species is minimized. Here, focusing on Euarchontoglires, we explore cochlear morphology of 33 species of therian mammals with a restricted body size range. Using μCT scans, 3D models and 3D geometric morphometrics, we obtained shape information of the cochlea and used it to build phylogenetically corrected least square models with 12 hearing variables obtained from the literature. Our results reveal that different taxonomic groups differ significantly in cochlea s

SUBMITTER: Del Rio J 

PROVIDER: S-EPMC9908918 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature