Northern lion

Northern lion
Adult Asiatic Lion.jpg
An adult Asiatic lion in Gir Forest National Park, India
West African male lion.jpg
Male in Pendjari National Park, Benin, West Africa
Scientific classification e
Kingdom:Animalia
Phylum:Chordata
Class:Mammalia
Order:Carnivora
Suborder:Feliformia
Family:Felidae
Subfamily:Pantherinae
Genus:Panthera
Species:P. leo
Subspecies:P. l. leo
Trinomial name
Panthera leo leo
(Linnaeus, 1758)
Synonyms[1]

formerly

  • P. l. azandicus
  • P. l. bleyenberghi
  • P. l. gambianus
  • P. l. kamptzi
  • P. l. nubicus
  • P. l. persica
  • P. l. somaliensis
  • P. l. senegalensis

The Northern lion (Panthera leo leo) is a lion subspecies occurring today in West and Central Africa, and in India. It comprises four traditionally recognized subspecies, the Barbary lion, the Asiatic lion, the West African lion and the Central African lion[2][3] It is regionally extinct in southern Europe, West Asia and North Africa. In Central Africa, lions were considered extinct in Gabon, Equatorial Guinea and Republic of the Congo.[4][5][6] The West African population is listed as Critically Endangered on the IUCN Red List; this population is isolated and comprises fewer than 250 mature individuals.[7]

Results of a phylogeographic study indicate that lion populations in the Central African range countries are genetically close to populations in North and West Africa, and India, forming a clade distinct from lion populations in Southern and East Africa.[8] In 2017, the Cat Classification Task Force of the IUCN Cat Specialist Group subsumed lion populations to two subspecies, namely P. l. leo and P. l. melanochaita.[2]

Taxonomic history

Lion subspecies as recognized between 1930s and 2005[9]

A lion from Constantine, Algeria was the type specimen for the specific name Felis leo used by Linnaeus in 1758.[10] In the 19th and 20th centuries, several lion specimens from Africa and Asia were described and proposed as subspecies:

In the following decades, there has been much debate among zoologists on the validity of proposed subspecies:

In 2017, lion populations in North, West and Central Africa and Asia were subsumed to P. l. leo by the Cat Classification Task Force of the IUCN Cat Specialist Group, based on results of genetic research on lion samples.[2]

Genetic research

Purported Atlas lion in Rabat Zoo, Morocco

Since 2006, several phylogeographic studies were conducted to aid clarifying the taxonomic status of lion samples kept in museums and collected in the wild. Results indicate that lion populations in the northern part of Central Africa and Ethiopia are genetically close to populations in West and North Africa and Asia, whereas populations in the southern part of Central Africa are closer to populations in Southern and East Africa.[23]

In a comprehensive study about the evolution of lions, 357 samples of 11 lion populations were examined, including some hybrid lions. The hybrids had descended from lions captured in Angola and Zimbabwe, and apparently West or Central Africa. Results indicated that four lions from Morocco did not exhibit any unique genetic characteristics and shared mitochondrial haplotypes H5 and H6 with lions from West Africa, and together with them were part of a major mtDNA grouping (lineage III) that also included Asiatic samples. This scenario was well in line with theories on lion evolution: lineage III developed in East Africa and traveled north and west in the first wave of lion expansions about 118,000 years ago. It apparently broke up into haplotypes H5 and H6 within Africa, and then into H7 and H8 in West Asia[24]

Results of genetic analyses indicate that lions in West Africa and northern parts of Central Africa form distinct lion clades, which are more closely related to North African and Asiatic lions than to lions in Southern Africa and southern parts of East Africa. Lions from North Africa and India however, do form one single clade.[25]Analysis of phylogenetic data of 194 lion samples from 22 different countries revealed that Central and West African lions form a phylogeographic group that probably diverged about 186,000–128,000 years ago from the melanochaita group in East and Southern Africa.[8]

Several lions kept in Ethiopia's Addis Ababa Zoo were found to be genetically similar to wild lions from Cameroon and Chad.[26]