Panthera Explained

Panthera is a genus within the family Felidae, and one of two extant genera in the subfamily Pantherinae. It contains the largest living members of the cat family. There are five living species: the jaguar, leopard, lion, snow leopard and tiger, as well as a number of extinct species.

Etymology

The word panther derives from classical Latin panthēra, itself from the ancient Greek pánthēr (πάνθηρ).[1]

Characteristics

In Panthera species, the dorsal profile of the skull is flattish or evenly convex. The frontal interorbital area is not noticeably elevated, and the area behind the elevation is less steeply sloped. The basic cranial axis is nearly horizontal. The inner chamber of the bullae is large, the outer small. The partition between them is close to the external auditory meatus. The convexly rounded chin is sloping.[2] All Panthera species have an incompletely ossified hyoid bone and a specially adapted larynx with large vocal folds covered in a fibro-elastic pad; these characteristics enable them to roar. Only the snow leopard cannot roar, as it has shorter vocal folds of that provide a lower resistance to airflow; it was therefore proposed to be retained in the genus Uncia.[3] Panthera species can prusten, which is a short, soft, snorting sound; it is used during contact between friendly individuals. The roar is an especially loud call with a distinctive pattern that depends on the species.[4]

Evolution

The geographic origin of the Panthera is most likely northern Central Asia. Panthera blytheae, possibly the oldest known Panthera species, is similar in skull features to the snow leopard, though its taxonomic placement has been disputed by other researchers who suggest that the species likely belongs to a different genus.[5] [6] The tiger, snow leopard, and clouded leopard genetic lineages dispersed in Southeast Asia during the Miocene.[7] Genetic studies indicate that the pantherine cats diverged from the subfamily Felinae between six and ten million years ago.[8] The genus Neofelis is sister to Panthera.[8] [9] [10] [11] The clouded leopard appears to have diverged about . Panthera diverged from other cat species about and then evolved into the species tiger about, snow leopard about and leopard about . Mitochondrial sequence data from fossils suggest that the American lion (P. atrox) is a sister lineage to Panthera spelaea (the Eurasian cave or steppe lion) that diverged about, and that both P. atrox and P. spelaea are most closely related to lions among living Panthera species.[12] The snow leopard is nested within Panthera and is the sister species of the tiger.[13]

Results of a 2016 study based on analysis of biparental nuclear genomes suggest the following relationships of living Panthera species:[14]

The extinct species Panthera gombaszoegensis, was probably closely related to the modern jaguar. The first fossil remains were excavated in Olivola, in Italy, and date to .[15] Fossil remains found in South Africa that appear to belong within the Panthera lineage date to about .[16]

Classification

Panthera was named and described by Lorenz Oken in 1816 who placed all the spotted cats in this group.[17] [18] During the 19th and 20th centuries, various explorers and staff of natural history museums suggested numerous subspecies, or at times called "races", for all Panthera species. The taxonomist Reginald Innes Pocock reviewed skins and skulls in the zoological collection of the Natural History Museum, London, and grouped subspecies described, thus shortening the lists considerably.[19] [20] [21] Reginald Innes Pocock revised the classification of this genus in 1916 as comprising the tiger (P. tigris), lion (P. leo), jaguar (P. onca), and leopard (P. pardus) on the basis of common features of their skulls.[22] Since the mid-1980s, several Panthera species became subjects of genetic research, mostly using blood samples of captive individuals. Study results indicate that many of the lion and leopard subspecies are questionable because of insufficient genetic distinction between them.[23] [24] Subsequently, it was proposed to group all African leopard populations to P. p. pardus and retain eight subspecific names for Asian leopard populations.[25] Results of genetic analysis indicate that the snow leopard (formerly Uncia uncia) also belongs to the genus Panthera (P. uncia), a classification that was accepted by IUCN Red List assessors in 2008.

Based on genetic research, it was suggested to group all living sub-Saharan lion populations into P. l. leo.[26] Results of phylogeographic studies indicate that the Western and Central African lion populations are more closely related to those in India and form a different clade than lion populations in Southern and East Africa; southeastern Ethiopia is an admixture region between North African and East African lion populations.[27] [28]

Black panthers do not form a distinct species, but are melanistic specimens of the genus, most often encountered in the leopard and jaguar.[29] [30]

Contemporary species

The following list of the genus Panthera is based on the taxonomic assessment in Mammal Species of the World and reflects the taxonomy revised in 2017 by the Cat Classification Task Force of the Cat Specialist Group:[31]

Extinct species and subspecies

Species and subspecies Fossil recordsNotesImages
Panthera blytheaeTibetan PlateauIntitally described as one of the oldest known Panthera species, possibly closely related to the snow leopard, though other researchers consider it as a species of a different genus.
Panthera palaeosinensisNorthern ChinaInitially thought to be an ancestral tiger species, but several scientists place it close to the base of the genus Panthera
Panthera zdanskyiGansu province of northwestern ChinaPossibly a close relative of the tiger
Panthera youngi[46] China, Japan
Panthera atroxNorth America, dubious remains in South America.[47] Commonly known as the American lion, P. atrox is thought to have descended from a basal P. spelaea cave lion population isolated south of the Cordilleran Ice Sheet, and then established a mitochondrial sister clade circa 200,000 BP.[48] It was sometimes considered a subspecies either under the nomenclature of P. leo or P. spelaea.[49] One of the largest Panthera species.[50] Became extinct around 13,000-12,000 years ago.[51]
Panthera balamoides[52] MexicoDubious, other authors suggest that the remains are actually of the extinct bear Arctotherium instead.[53]
Panthera gombaszoegensisEuropeRanged across Europe from around 2 million to 350,000 years ago.[54] Panthera schreuderi and Panthera toscana are considered junior synonyms of P. gombaszoegensis. It is occasionally classified as a subspecies of P. onca.[55] [56]
Panthera fossilis[57] EuropeLikely the ancestor of P. spelaea[58]
Panthera spelaeaMuch of Eurasia[59] Commonly known as the cave lion or steppe lion. Originally spelaea was classified as a subspecies of the extant lion P. leo.[60] Results of recent genetic studies indicate that it belongs to a distinct species, namely P. spelaea that is most closely related to the modern lion among living Panthera species.[61] [62] Other genetic results indicate that P. fossilis also warrants status as a species.[63] [64] Became extinct around 14,500-14,000 years ago.[65]
Panthera leo sinhaleyusSri LankaThis lion subspecies was described on the basis of two teeth.[66]
Panthera onca augusta[67] North AmericaMay have lived in temperate forests across North America[68]
Panthera onca mesembrina[69] South AmericaMay have lived in grasslands in South America, unlike the modern jaguar
Panthera pardus spelaeaEuropeClosely related to Asiatic leopard subspecies,[70]
Panthera shawiLaetoli site in TanzaniaA leopard-like cat[71]
Panthera tigris acutidensMuch of AsiaNot closely related to modern tiger subspecies[72]
Panthera tigris soloensisJava, IndonesiaNot closely related to modern tiger subspecies
Panthera tigris trinilensisJava, IndonesiaNot closely related to modern tiger subspecies
Panthera principialisTanzaniaDescribed in 2022.[73]
Panthera dhokpathanensisSiwaliksDescribed in 1986.[74]
Other, now invalid, species have also been described, such as Panthera crassidens from South Africa, which was later found to be based on a mixture of leopard and cheetah fossils.[75]

Phylogeny

The cladogram below follows Mazák, Christiansen and Kitchener (2011).[76]

In 2018, results of a phylogenetic study on living and fossil cats were published. This study was based on the morphological diversity of the mandibles of saber-toothed cats, their speciation and extinction rates. The generated cladogram indicates a different relation of the Panthera species, as shown below:[77]

See also

Further reading

External links

Notes and References

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  2. Book: Pocock, R. I. . 1939 . Panthera . https://archive.org/stream/PocockMammalia1/pocock1#page/n243/mode/2up . The fauna of British India, including Ceylon and Burma. Mammalia. – Volume 1 . Taylor and Francis . London . 196–239.
  3. The larynx of roaring and non-roaring cats . Journal of Anatomy . 1989 . 1256521 . 2606766 . 117–121 . 163 . M. H.. Hast.
  4. Weissengruber . G. E. . Forstenpointner, G. . Peters, G. . Kübber-Heiss, A. . Fitch, W. T. . Hyoid apparatus and pharynx in the lion (Panthera leo), jaguar (Panthera onca), tiger (Panthera tigris), cheetah (Acinonyx jubatus) and the domestic cat (Felis silvestris f. catus) . Journal of Anatomy . 195–209 . 201. 3 . 2002 . 10.1046/j.1469-7580.2002.00088.x . 1570911 . 12363272.
  5. Geraads, D. . Peigné, S . Re-appraisal of Felis pamiri Ozansoy 1959 (Carnivora, Felidae) from the upper Miocene of Turkey: the earliest pantherine cat? . Journal of Mammalian Evolution . 24 . 4 . 415–425 . 2017 . 10.1007/s10914-016-9349-6. 207195894.
  6. Hemmer. H. . 2023 . The evolution of the palaeopantherine cats, Palaeopanthera gen. nov. blytheae (Tseng et al., 2014) and Palaeopanthera pamiri (Ozansoy, 1959) comb. nov. (Mammalia, Carnivora, Felidae) . Palaeobiodiversity and Palaeoenvironments . 103 . 4 . 827–839 . 10.1007/s12549-023-00571-5 . 2023PdPe..103..827H . 257842190.
  7. Tseng . Z.J. . Wang . X. . Slater . G.J. . Takeuchi . G.T. . Li . Q. . Liu . J. . Xie . G. . amp . 2014 . Himalayan fossils of the oldest known pantherine establish ancient origin of big cats . Proceedings of the Royal Society B: Biological Sciences . 281 . 1774 . 20132686 . 10.1098/rspb.2013.2686 . 24225466 . 3843846.
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