The data and methods used have been described previously [54 (link)]. Briefly, two quail lines were used, divergently selected on their sociability [19 (link)]: high social (HSR) and low social (LSR) reinstatement behaviour. A total of 10 individuals from generation 50 of each quail line were sequenced after equimolar DNA pooling. Sequencing was performed (paired-ends, 100 bp) on a HiSeq 2000 sequencer (Illumina), using one lane per line (TruSeq sbs kit version 3). The reads (190,159,084 and 230,805,732 reads, respectively, for the HSR and LSR lines) were mapped to the CoJa2.2 genome assembly using BWA [112 (link)], with the mem algorithm. Data are publicly available under SRA accession number SRP047364. Within each line, the frequency of the reference allele was estimated for all SNPs covered by at least 5 reads, using Pool-HMM [113 (link)]. This analysis provided 13,506,139 SNPs with allele frequency estimates in the two lines. FLK values [55 (link)] were computed for all these SNPs, and the local score method [54 (link)] was applied to the p value on single-marker tests.
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