The Japanese quail (Coturnix japonica) is a notably valuable egg and meat producer but has also been used as a laboratory animal. In the present study, we constructed a Japanese quail linkage map with 1735 polymorphic amplified fragment length polymorphisms markers, and nine chicken microsatellite (MS) markers, as well as sex and phenotypes of two genetic diseases; a muscular disorder (LWC) and neurofilament-deficient mutant (Quv). Linkage analysis revealed 578 independent loci. The resulting linkage map contained 44 multipoint linkage groups covering 2597.8 cM and an additional 218.2 cM was contained in 21 two-point linkage groups. The total map was 2816 cM in length with an average marker interval of 5.5 cM. The Quv locus was located on linkage group 5, but linkage was not found between the LWC locus and any of the markers. Comparative mapping with chicken using orthologous markers revealed chromosomal assignments of the quail linkage group 1 to chicken chromosome 2 (GGA2), 5 to GGA22, 2 to GGA5, 8 to GGA7, 27 to GGA11, 29 to GGA1 and 45 to GGA4.
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