English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Mineralization of the Callorhinchus vertebral column (Holocephali; Chondrichthyes)

Pears, J. B., Johanson, Z., Trinajstic, K., Dean, M. N., & Boisvert, C. A. (2020). Mineralization of the Callorhinchus vertebral column (Holocephali; Chondrichthyes). Frontiers in Genetics, 11: 571694. doi:10.3389/fgene.2020.571694.

Item is

Basic

show hide
Genre: Journal Article

Files

show Files
hide Files
:
Article.pdf (Publisher version), 11MB
Name:
Article.pdf
Description:
-
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-

Locators

show

Creators

show
hide
 Creators:
Pears, Jacob B., Author
Johanson, Zerina, Author
Trinajstic, Kate, Author
Dean, Mason N.1, Author              
Boisvert, Catherine A., Author
Affiliations:
1Mason Dean, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_3034230              

Content

show
hide
Free keywords: -
 Abstract: Members of the Chondrichthyes (Elasmobranchii and Holocephali) are distinguished by their largely cartilaginous endoskeletons, which comprise an uncalcified core overlain by a mineralized layer; in the Elasmobranchii (sharks, skates, rays) most of this mineralization takes the form of calcified polygonal tiles known as tesserae. In recent years, these skeletal tissues have been described in ever increasing detail in sharks and rays, but those of Holocephali (chimaeroids) have been less well-studied, with conflicting accounts as to whether or not tesserae are present. During embryonic ontogeny in holocephalans, cervical vertebrae fuse to form a structure called the synarcual. The synarcual mineralizes early and progressively, anteroposteriorly and dorsoventrally, and therefore presents a good skeletal structure in which to observe mineralized tissues in this group. Here, we describe the development and mineralization of the synarcual in an adult and stage 36 elephant shark embryo (Callorhinchus milii). Small, discrete, but irregular blocks of cortical mineralization are present in stage 36, similar to what has been described recently in embryos of other chimaeroid taxa such as Hydrolagus, while in Callorhinchus adults, the blocks of mineralization are more irregular, but remain small. This differs from fossil members of the holocephalan crown group (Edaphodon), as well as from stem group holocephalans (e.g., Symmorida, Helodus, Iniopterygiformes), where tesserae are notably larger than in Callorhinchus and show similarities to elasmobranch tesserae, for example with respect to polygonal shape.

Details

show
hide
Language(s): eng - English
 Dates: 2020-11-262020
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.3389/fgene.2020.571694
BibTex Citekey: 10.3389/fgene.2020.571694
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Frontiers in Genetics
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Lausanne : Frontiers Media
Pages: - Volume / Issue: 11 Sequence Number: 571694 Start / End Page: - Identifier: ISSN: 1664-8021