Fig. 4

Interpolation maps showing the geographic distribution of observed and expected heterozygosities in African, European and Asian breeds. Interpolation maps showing the distribution of genetic diversity in African, European and Asian breeds. a Observed heterozygosity, H_o. b Expected heterozygosity, H_e. Blue points represent sampling localities in a and b, respectively. In Europe, a reduction of diversity is evident in goats from the United Kingdom and Ireland, while in Africa low diversity coincides with the Tsetse fly belt (a geographic area comprised between latitudes 14° N and 20° S) and Madagascar. In Asia, low variation is detected in Pakistan and Southern China