Utiliser ou ne pas utiliser un gène de détermination du sexe : évolution des systèmes de détermination du sexe chez les Esociformes

Abstract : Teleost fishes, the most species-rich clade among vertebrates, employs an astonishing diversity of sex-determining (SD) mechanisms, including environmental and genetic systems. Recent studies identified many new genetic regulators in fish sexual development that lead to the notion of an 'evolutionary playground'.This thesis project aims to provide a complete picture of the evolutionary dynamic of SD systems within a small order of teleost, Esociformes. In our focal species Esox lucius, we idenWhile the gene is lost in another population of the same species rapidly possibly during post-glacial recolonization process, it is well conserved among different species. Meanwhile, additional transition of SD system have also been identified in a sister Esox species. Moreover, in the most distant genera Dallia and Umbra, the Esox master SD gene is not present and we found different SD mechanisms with novel SD genes that adds additional layers of complexity to this group, which mirrors the observed high genetic plasticity in teleost SD
Document type :
Theses
Complete list of metadatas

https://tel.archives-ouvertes.fr/tel-01814706
Contributor : Abes Star <>
Submitted on : Wednesday, June 13, 2018 - 2:30:06 PM
Last modification on : Tuesday, October 2, 2018 - 1:02:47 AM
Long-term archiving on: Friday, September 14, 2018 - 2:45:34 PM

File

fix_EkNlbhvS_PAN.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-01814706, version 1

Collections

Citation

Qiaowei Pan. Utiliser ou ne pas utiliser un gène de détermination du sexe : évolution des systèmes de détermination du sexe chez les Esociformes. Biologie animale. Agrocampus Ouest, 2017. Français. ⟨NNT : 2017NSARB305⟩. ⟨tel-01814706⟩

Share

Metrics

Record views

137

Files downloads

210