Table 3.

Examples of QTLs for skin pigmentation traits mapped on different fish model genomes.

Species	Trait	Linkage group (LG) where QTLs were detected. Name of QTL (bold), linked markers, and respective phenotypic variation noted in parentheses	Reference
Threespine sticklebacks (Gasterosteus aculeatus)	Degree of barring Degree of melanization Number of dorsal melanophores Number of ventral melanophores	LG-1 (barring, chrI:3310077, 6.6%) LG-1 (melanization, chrI:4816374, 11.7%) LG-6 (barring, chrVI:15780594, 20%) LG-1 (ventral melanophores, chrI:21909727, 8.9%) LG-7 (dorsal melanophores, chrVII:1728753, 11.6%)	Greenwood et al. (2011)
Guppy (Poecilia reticulate)	Dorsal fin black area Dorsal fin orange area Central blue white spot Anterior main black stripe Anterior orange spot Black spot by gonopodium Central orange spot Posterior main black stripe Posterior ventral black stripe Posterior orange spot Hind fin lower orange area	LG-1, LG-2, LG-4, LG-9, LG-12 (Dorsal fin black area, 22.9%) LG-1, LG-2, LG-4, LG-6, LG-7, LG-16 (Dorsal fin orange area, 26.8%) LG-2, LG-12, LG-17, LG-21, LG-23 (Central blue white spot, 26.5%) LG-8, LG-19 (Anterior main black stripe, 9.4%) LG-6, LG-7, LG-9, LG-12, LG-20 (Anterior orange spot, 23%) LG-01, LG-04, LG-07, LG-12, LG-16 (Black spot by gonopodium, 19.1%) LG-05, LG-08, LG-20, LG-22 (Central orange spot, 15.3%) LG-04, LG-10, LG-12, LG-13, LG-22, LG-23 (Posterior main black stripe, 21.6%) LG-01, LG-02, LG-13, LG-16, LG-18 (Posterior ventral black stripe, 17.7%) LG-08, LG-09, LG-15, LG-16, LG-18 (Posterior orange spot, 26.2%) LG-03, LG-04, LG-06, LG-12, LG-20 (Hind fin lower orange area, 23.3%)	Tripathi et al. (2009)

QTLs were detected at genome-wide level using permutation tests at a significance threshold value of P < 0.05 for G. aculeatus and P. reticulate.