Figure 1.

Geographical localization of the sampling sites for inbred strains and the Kiyosu population. (A) Medaka consists of four major populations in East Asia. The Nilan strain comes from Ilan-City, Taiwan, and is a representative of the Chinese/West Korean population; the HSOK strain is from Sokcho-City, Gangweon-do, Korea, and is a member of the East Korean population. The Japanese populations are divided by the Japanese Alps into Northern and Southern strains. Whereas Kaga and HNI belong to the Northern populations, HdrR is the Southern reference strain that was used for the Medaka genome sequencing project (Kasahara et al., 2007). In red is the site in Kiyosu where the founders for the inbreeding panel were sampled (see Materials and Methods for the GPS location). (B) Representative pictures of lateral and dorsal views of 10 days’ postfertilization-old larvae of the different Japanese inbred strains. Icab, HNCMH2, and HO5 are further Southern Japanese inbred strains whose original sampling site is not shown in (A).