Publication
Title
The head of the finch: the anatomy of the feeding system in two species of finches (**Geospiza fortis** and **Padda oryzivora**)
Author
Abstract
Despite the large number of studies devoted to the evolution of beak shape in Darwins finches, surprisingly little is known about the morphology of the skull and jaw musculature in these birds. Moreover, it remains currently unclear whether Darwins finches are unusual in their cranial morphology compared with other seed-cracking birds. Here, we provide a detailed description of the morphology of the cranial system in the medium ground finch (Geospiza fortis) and compare it with that of another seed-cracking bird of similar overall size and appearance, the Java finch (Padda oryzivora). Our data show an overall similarity in beak size and cranial morphology. Yet, differences in the jaw adductor size and corresponding attachments to the cranium and mandible are prominent, with the medium ground finch having much more robust jaw-closing muscles. This is reflected in differences in bite forces, with the medium ground finch biting much harder than the Java finch. These data suggest similarities in the evolution of the feeding system in birds specializing in the cracking of hard seeds, but also show the uniqueness of the cranial morphology and bite force of the medium ground finch compared with other seed-cracking birds.
Language
English
Source (journal)
Journal of anatomy. - London
Publication
London : 2011
ISSN
0021-8782
Volume/pages
219:6(2011), p. 676-695
ISI
000297412200003
Full text (Publisher's DOI)
Full text (publisher's version - intranet only)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 23.01.2012
Last edited 06.08.2017
To cite this reference