Lion genetics
Thylo got me thinking about the current state of Lion taxonomy and genetic research in the "phase-in" thread. So here is what is most current.
The IUCN only recognizes two subspecies of lions
Panthera leo leo (African) and
Panthera leo persica (Asian or as the Brits say "Asiatic").
If African Lions turn out to be separable into further subspecies, then
leo has precedence over the others followed by
senegalensis. (See ICZN rules of nomenclature). Properly
senegalensis refers to just the West African lions, broadly it can refer to all sub-Saharan (if all sub-Saharan are monotypic).
However, Barnett et al. (2011) made the discovery that the West and Central African Lions are separated from those in East and South Africa. This makes sense as it follows the line of the Great Rift Valley which separates many taxa into either species or subspecies. There seems to be little diversity in the S/E Lions so it is not necessary to split them into recognizable taxa with the possible exception of the extinct Cape Lion, which oddly groups together with the Barbary Lion in mDNA (large models of African paleo-climate can explain this).
Surprisingly,
leo (senso stricto) and
persica seem to be very similar to one another, and in some scenarios in separable. If this is the case - hold on to your butts -
leo and
persica get synonymized and
leo has precedence! (This means that Asian Lions could become
Panthera leo leo and
P. l. persica is a no longer a valid name).
This leaves the sub-Saharan Lions.
Senegalensis has to be a valid name for the West African Lions. I currently cannot find which names have precedence for the lions in Central and South/East Africa. Going with normal trends, the Lions in S/E Africa are probably
P. l. nubica (this includes
krugeri and
bleyenberghi. This would leave
azandica as the name for the Central African Lions.
With the Central African Lions, we can probably group the Ethiopian Lions. The current thinking is that the Lions at the Addis Zoo came from southwest Ethiopia, very close to where the range of the Central African Lions are (
azandica). If the Ethiopian Lions do prove distinct, I have yet to find a name in the literature that would correspond to them.
What the heck does all this mean? I dunno? Asian, Barbary, Central African (and Ethiopian), and probably West African Lions all seem to form one group, while South/East African Lions form a second. I think what we are looking at is two populations of Lions, one North of not the Sahara, but of the Congo, while the other is south and east of the Congo. It boils down to your definition of species (and subspecies). Someone who is a proponent of the Biologic Species Concept would have 1 species with at least 5 subspecies. Someone who is a proponent of the Philogenetic Species Concept would go a different route - 2 species with no subspecies. In this route we would have Panthera leo (North Africa and Eurasia) and Panthera nubica (South and East Africa).
Confused? I thought so.
The origin, current diversity and future conservation of the modern lion (Panthera leo)
The origin, current diversity and future conservation of the modern lion (Panthera leo)
Susann Bruche, Markus Gusset, Sebastian Lippold, Ross Barnett, Klaus Eulenberger, Jörg Junhold, Carlos A. Driscoll, Michael Hofreiter. A genetically distinct lion (Panthera leo) population from Ethiopia. European Journal of Wildlife Research, 2012; DOI:
[accessed via
DNA confirms genetically distinct lion population for Ethiopia ]