Analysis of the association between spawning time QTL markers and the biannual spawning behavior in rainbow trout (Oncorhynchus mykiss)

Genetics and Molecular Biology

Nelson Colihueque²  Rosy Cárdenas²  Lorena Ramírez²  Francisco Estay¹  Cristian Araneda¹ 

[1] ,Universidad de Los Lagos Departamento de Ciencias Básicas Osorno,Chile

关键词: association analysis;    biannual spawning;    microsatellite markers;    rainbow trout;   

DOI  :  10.1590/S1415-47572010000300032

来源: SciELO

【 摘 要 】

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.

【 授权许可】

CC BY   
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