Figure 3
From: Declining genetic diversity of European honeybees along the twentieth century
Haplotype network based on (a) cytochrome b (CYTB) and (b) cytochrome c oxidase 1 and 2 (COI-COII). Size of circles is proportional to number of individuals with that haplotype; black circles represent haplotypes not present in our sampling. Coloured areas represent the evolutionary lineages where enclosed haplotypes have been found.
