A genotyping system capable of analyzing many teleost species

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A large set of polymorphic markers are essential for applying molecular genetics to fish improvement. However, these markers are highly species-specific. To develop genetic markers that can be used in breeding program of many fish species, I first constructed a fugu genome map that covers 86% of genome assembly. I then compared it with the map of medaka, and revealed highly conserved features of fish genomes. By using the results of comparisons, I found a large number of marker loci that have been conserved among fish genomes. These markers successfully enabled me to construct a linkage map of chub mackerel without any information of its genome sequences, suggesting the versatility of the markers.