PhD student
in Evo-Devo & Marine Biology


Thorny skate (Amblyraja radiata) microCT scan.

Tooth shape
& development

Tooth shapes of a nursehound Scyliorhinus stellaris jaw.

Tooth shape

MicroCT images of tooth shape diversity in sharks.

Tooth & odontode

Histology of Scyliorhinus canicula jaw (Masson's Trichrome).

Evolution of mineralizing cells
in chondrichthyans

Histology of skate vertebrae (HES staining).


Fidji Berio

I have a Master degree in marine ecology and I am currently doing my PhD in evo-devo on cartilaginous fishes, especially on catsharks (Scyliorhinids). I try to describe their tooth shape diversity using microCT scans and 3D geometric morphometrics. Then, I am deciphering what drives such diversity, including physical and molecular parameters. I work under the co-supervision of Nicolas Goudemand and Mélanie Debiais-Thibaud. I am also involved in side projects about the skeletal patterns in skates (University of Québec in Rimouski in the Paléobio lab), about the evolutionary history of mineralizing cells in Chondrichthyans, and the organization of the Comparative Cartilage Biology meeting.


Journal publications

F Berio, Y Bayle, C Riley, O Larouche & R Cloutier. Phenotypic regionalization of the vertebral column in the thorny skate Amblyraja radiata: stability and variation. — Submitted to Evolution & Development, November 2020.

F Berio, A Evin, N Goudemand & M Debiais-Thibaud (2020). The intraspecific diversity of tooth morphology in the large-spotted catshark Scyliorhinus stellaris: insights into the ontogenetic cues driving sexual dimorphism. — Journal of Anatomy.

F Berio & Y Bayle (2020). Scyland3D: Processing 3D landmarks. — Journal of Open Science Software.

F Berio & M Debiais-Thibaud (2019). Evolutionary developmental genetics of teeth and odontodes in jawed vertebrates: A perspective from the study of elasmobranch fishes. — Journal of Fish Biology, 1-13.

Scientific talks

F Berio, S Enault, M Debiais-Thibaud (2019). Histological description of cell types involved in the chondrichthyan skeletogenesis.Comparative Cartilage Biology meeting, Banyuls-sur-mer, France.

F Berio, A Evin, M Debiais-Thibaud & N Goudemand (2018). Tooth shape variation in the large-spotted catshark Scyliorhinus stellaris.10th Symposium on Morphometry and Evolution of Forms, Bordeaux, France.

Scientific posters

F Berio, A Evin, M Debiais-Thibaud, N Goudemand (2018). A sex- and stage- dependent smile: Exploring tooth shape variation in the large-spotted catshark. — Doctoral School, Public Prize.

F Berio, A Evin, M Debiais-Thibaud, N Goudemand (2018). Intra- and interspecific tooth shape variation in sharks: Phenotypic plasticity and developmental constraints on tooth evolution. 7th EuroEvoDevo, Galway, Ireland & Evolution, Montpellier, France.


Chelonia midas

Scuba diving
Level 2 FFESSM


Marine biology
and conservation