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

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...

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Detalles Bibliográficos
Autores principales: Colihueque, Nelson, Cárdenas, Rosy, Ramírez, Lorena, Estay, Francisco, Araneda, Cristian
Formato: Texto
Lenguaje:English
Publicado: Sociedade Brasileira de Genética 2010
Materias:
Evolutionary Genetics
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3036128/
https://www.ncbi.nlm.nih.gov/pubmed/21637435
http://dx.doi.org/10.1590/S1415-47572010000300032
Descripción
Sumario: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.

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