Left-Right gene expression asymmetry in gonads of rainbow trout, Oncorhynchus mykiss, following masculinization treatments with androgens

Guillevic M., Guiguen Y.

Date de parution: juillet 2008
Volume: 32
Number: 2 suppl.
Pagination: 099
Editeur: Société Française d'Ichtyologie
doi: https://doi.org/10.26028/cybium/2008-322SP-042

Following masculinization of an all female genetic population of rainbow trout larvae by repetitive immersions with 17α-methyltestosterone (17 αMT) we investigate if we could characterize a L/R gene expression asymmetry in the gonads of these treated fish. The 17 αMT immersion treatment resulted in an overall masculinization percentage of 29%. Gene expression of 18 genes reveals that most of the genes investigated exhibit clear left/right (L/R) differences in their gonadal expression profiles. This L/R asymmetry is probably the result of an early asymmetry of the gonad during the sex differentiation period.

Mots-clés: Androgen - Asymmetry - Gene expression - Masculinization - Oncorhynchus mykiss - Sex differentiation
PDF visible pour tous