Skip to main content
. Author manuscript; available in PMC: 2012 Sep 8.
Published in final edited form as: Nature. 2012 Mar 7;483(7388):169–175. doi: 10.1038/nature10842

Figure 4. Gorilla species distribution and divergence.

Figure 4

Figure 4

Figure 4

Figure 4

Figure 4

a, Distribution of gorilla species in Africa. The western species (Gorilla gorilla) comprises two subspecies: western lowland gorillas (G. gorilla gorilla) and Cross River gorillas (G. gorilla diehli). Similarly, the eastern species (Gorilla beringei) is subclassified into eastern lowland gorillas (G. beringei graueri) and mountain gorillas (G. beringei beringei). (Based on data in IUCN 2010.) b, Western lowland gorilla Kamilah, source of the reference assembly (photo JR). c, Eastern lowland gorilla Mukisi (photo M. Seres). d, Isolation-migration model of the western and eastern species. NA, NW and NE are ancestral, western and eastern effective populations sizes; m is the migration rate. e, Likelihood surface for migration and split time parameters in the isolation-migration model.