Tags

Type your tag names separated by a space and hit enter

Development of the paratympanic pneumatic system of Japanese quail.
J Morphol 2019; 280(10):1492-1529JM

Abstract

Avian heads are characterized as having two extensive air-filled systems lined with epithelia; the paranasal and paratympanic sinuses. Many diverticula derived from the paratympanic sinus system are known to reticulate with each other to form a single merged pneumatic space within the adult braincase. However, the development of these complex branching and reticulating epithelia has not been examined in detail. In this study, we describe the comprehensive developmental pattern of the paratympanic sinus and its associated soft tissues in a model bird, Japanese quail (Coturnix japonica). The data are derived from three-dimensional reconstructions based on histological sections and soft tissue enhanced micro-CT data. Those data provide the foundation of the complex hierarchical developmental pattern of the paratympanic sinus system. Moreover, associations with other tissues help establish key morphologies that identify each pneumatic entity. This study clarifies the developmental relationships of the ventral portions of the paratympanic sinus system, the siphoneal diverticulum and marginal sinus, based on the ligaments associated with the Eustachian tube. In addition, detailed histological pneumatic morphologies reveal hitherto unknown epithelial diversity, which may be indicative of equally complex developmental processes. We use the pneumatization of the quadrate as an example to support a close relationship with vascular growth and pneumatic epithelia invasion into ossified bone. We confirm pneumatic diverticula never enter into cartilages, possibly due to the absence of vasculature in these tissues. Lastly, we use the concept of a morphogenetic tree as a tool to help present the complex developmental pattern of the paratympanic sinus system and apply it toward inferring pneumatic morphologies in a nonavian theropod braincase.

Authors+Show Affiliations

Redpath Museum, McGill University, Montreal, Quebec, Canada.Redpath Museum, McGill University, Montreal, Quebec, Canada.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31390118

Citation

Tahara, Rui, and Hans C E. Larsson. "Development of the Paratympanic Pneumatic System of Japanese Quail." Journal of Morphology, vol. 280, no. 10, 2019, pp. 1492-1529.
Tahara R, Larsson HCE. Development of the paratympanic pneumatic system of Japanese quail. J Morphol. 2019;280(10):1492-1529.
Tahara, R., & Larsson, H. C. E. (2019). Development of the paratympanic pneumatic system of Japanese quail. Journal of Morphology, 280(10), pp. 1492-1529. doi:10.1002/jmor.21045.
Tahara R, Larsson HCE. Development of the Paratympanic Pneumatic System of Japanese Quail. J Morphol. 2019;280(10):1492-1529. PubMed PMID: 31390118.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Development of the paratympanic pneumatic system of Japanese quail. AU - Tahara,Rui, AU - Larsson,Hans C E, Y1 - 2019/08/07/ PY - 2019/04/09/received PY - 2019/06/28/revised PY - 2019/07/05/accepted PY - 2019/8/8/pubmed PY - 2019/8/8/medline PY - 2019/8/8/entrez KW - Coturnix japonica KW - marginal sinus KW - morphogenetic tree KW - paratympanic sinus KW - siphoneal diverticulum SP - 1492 EP - 1529 JF - Journal of morphology JO - J. Morphol. VL - 280 IS - 10 N2 - Avian heads are characterized as having two extensive air-filled systems lined with epithelia; the paranasal and paratympanic sinuses. Many diverticula derived from the paratympanic sinus system are known to reticulate with each other to form a single merged pneumatic space within the adult braincase. However, the development of these complex branching and reticulating epithelia has not been examined in detail. In this study, we describe the comprehensive developmental pattern of the paratympanic sinus and its associated soft tissues in a model bird, Japanese quail (Coturnix japonica). The data are derived from three-dimensional reconstructions based on histological sections and soft tissue enhanced micro-CT data. Those data provide the foundation of the complex hierarchical developmental pattern of the paratympanic sinus system. Moreover, associations with other tissues help establish key morphologies that identify each pneumatic entity. This study clarifies the developmental relationships of the ventral portions of the paratympanic sinus system, the siphoneal diverticulum and marginal sinus, based on the ligaments associated with the Eustachian tube. In addition, detailed histological pneumatic morphologies reveal hitherto unknown epithelial diversity, which may be indicative of equally complex developmental processes. We use the pneumatization of the quadrate as an example to support a close relationship with vascular growth and pneumatic epithelia invasion into ossified bone. We confirm pneumatic diverticula never enter into cartilages, possibly due to the absence of vasculature in these tissues. Lastly, we use the concept of a morphogenetic tree as a tool to help present the complex developmental pattern of the paratympanic sinus system and apply it toward inferring pneumatic morphologies in a nonavian theropod braincase. SN - 1097-4687 UR - https://www.unboundmedicine.com/medline/citation/31390118/Development_of_the_paratympanic_pneumatic_system_of_Japanese_quail L2 - https://doi.org/10.1002/jmor.21045 DB - PRIME DP - Unbound Medicine ER -