A genome-wide association study, supported by a new chromosome-level genome assembly, suggests sox2 as a main driver of the undifferentiatiated ZZ/ZW sex determination of turbot (Scophthalmus maximus)

Paulino Martínez, Diego Robledo, Xoana Taboada, Andrés Blanco, Michel Moser, Francesco Maroso, Miguel Hermida, Antonio Gómez-Tato, Blanca Álvarez-Blázquez, Santiago Cabaleiro, Francesc Piferrer, Carmen Bouza, Sigbjørn Lien, Ana M. Viñas

Research output: Contribution to journalArticlepeer-review

Abstract

Understanding sex determination (SD) across taxa is a major challenge for evolutionary biology. The new genomic tools are paving the way to identify genomic features underlying SD in fish, a group frequently showing limited sex chromosome differentiation and high SD evolutionary turnover. Turbot (Scophthalmus maximus) is a commercially important flatfish with an undifferentiated ZW/ZZ SD system and remarkable sexual dimorphism. Here we describe a new long-read turbot genome assembly used to disentangle the genetic architecture of turbot SD by combining genomics and classical genetics approaches.
Original languageEnglish
JournalGenomics
Early online date8 Apr 2021
DOIs
Publication statusE-pub ahead of print - 8 Apr 2021

Keywords

  • Turbot
  • Sex determination
  • GWAS
  • sox2
  • Interfamily variation
  • Genome assembly
  • Oxford Nanopore

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