title: Analysis of the association between spawning time QTL markers and the biannual spawning behavior in rainbow trout (Oncorhynchus mykiss).
abstract: The rainbow trout is a salmonid fish that occasionally exhibits broodstocks with biannual spawning behavior, a phenomenon known as a double annual reproductive cycle (DARC). Spawning time quantitative trait loci (SPT-QTLs) affect the time of the year that female rainbow trout spawn and may influence expression of the DARC trait. In this study, microsatellite markers linked and unlinked to SPT-QTLs were genotyped to investigate the underlying genetics of this trait. SPT-QTLs influenced the DARC trait since in two case-control comparisons three linked markers (OmyFGT12TUF, One3ASC and One19ASC) had significant levels of allelic frequency differentiation and marker-character association. Furthermore, alleles of One3ASC and One19ASC had significantly higher frequencies in populations that carried the DARC trait.
authors.affiliation: Departamento de Ciencias Básicas, Universidad de Los Lagos, Osorno Chile.
authors.forename: Nelson
authors.initials: N
authors.lastname: Colihueque
authors.forename: Rosy
authors.initials: R
authors.lastname: Cárdenas
authors.forename: Lorena
authors.initials: L
authors.lastname: Ramírez
authors.forename: Francisco
authors.initials: F
authors.lastname: Estay
authors.forename: Cristian
authors.initials: C
authors.lastname: Araneda