Scaling of the avian middle ear.
Allometry
Bird
Columella
Isometry
Middle ear
Scaling
Journal
Hearing research
ISSN: 1878-5891
Titre abrégé: Hear Res
Pays: Netherlands
ID NLM: 7900445
Informations de publication
Date de publication:
15 09 2020
15 09 2020
Historique:
received:
11
12
2019
revised:
30
05
2020
accepted:
05
06
2020
pubmed:
28
7
2020
medline:
15
12
2021
entrez:
26
7
2020
Statut:
ppublish
Résumé
This article presents a comparative study of morphology of the avian middle ear. The general morphology of the columella shows considerable variation across species, yet few studies have attempted to provide quantitative comparisons, and basic anatomical data has not been thoroughly reported. In this study, we examined the middle ear in 49 taxonomically diverse species of bird. We found significant correlations between measurements of several features (columellar length, mass, tympanic membrane area, footplate area) and interaural diameter. While scaling of columellar length with interaural diameter is consistent with isometry, masses and areas showed negative allometry, or a non-proportional scaling with interaural diameter. These observations remained true even for species with unusual middle ear morphology, such as Alcedinidae (Kingfishers) in which the basal struts of the columella form a structure almost resembling a mammalian stapes, or Tytonidae (Barn Owls) which have a highly bulbous footplate. It therefore appears that allometry cannot help explain the morphological variation in the columella.
Identifiants
pubmed: 32709398
pii: S0378-5955(20)30288-4
doi: 10.1016/j.heares.2020.108017
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
108017Subventions
Organisme : NINDS NIH HHS
ID : P30 NS048154
Pays : United States
Organisme : NINDS NIH HHS
ID : R01 NS086839
Pays : United States
Informations de copyright
Copyright © 2020 Elsevier B.V. All rights reserved.