Submission Type
Event
Expected Graduation Date
2017
Location
Center for Natural Sciences, Illinois Wesleyan University
Start Date
4-16-2016 9:00 AM
End Date
4-16-2016 10:00 AM
Disciplines
Biology | Education
Abstract
Among teleost fishes, there is a substantial amount of diversity regarding craniofacial morphology. This study investigated the cellular processes directing the morphological variations observed in the Meckel’s and ceratohyal cartilages of the zebrafish Danio rerio and the redeye tetra Moenkhausia sanctaefilomenae. Utilizing BrdU incorporation, significant interspecific variations relating to cartilage formation were determined. Specifically, interstitial proliferation was found to be more important for the shaping and subsequent growth of the cartilages in D. rerio than in M. sanctaefilomenae. Correspondingly, the expansion of the pharyngeal arches was more dramatic in M. sanctaefilomenae than in D. rerio. This study demonstrates that differential developmental mechanisms underlie the apparent disparities in craniofacial morphology between these two species of fishes.
Included in
Assessment of Cranial Neural Crest Proliferation Patterns between the Redeye Tetra Moenkhausia Sanctaefilomenae and the Zebrafish Danio Rerio
Center for Natural Sciences, Illinois Wesleyan University
Among teleost fishes, there is a substantial amount of diversity regarding craniofacial morphology. This study investigated the cellular processes directing the morphological variations observed in the Meckel’s and ceratohyal cartilages of the zebrafish Danio rerio and the redeye tetra Moenkhausia sanctaefilomenae. Utilizing BrdU incorporation, significant interspecific variations relating to cartilage formation were determined. Specifically, interstitial proliferation was found to be more important for the shaping and subsequent growth of the cartilages in D. rerio than in M. sanctaefilomenae. Correspondingly, the expansion of the pharyngeal arches was more dramatic in M. sanctaefilomenae than in D. rerio. This study demonstrates that differential developmental mechanisms underlie the apparent disparities in craniofacial morphology between these two species of fishes.