Psittacula

Psittacula
Rose-ringed parakeets in Assam, India
(Psittacula krameri manillensis)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Psittaciformes
Family: Psittaculidae
Tribe: Psittaculini
Genus: Psittacula
Cuvier, 1800
Type species
Psittaculus alexandri (red-breasted parakeet)
Linnaeus, 1758
Species

see text

Psittacula, also known as Afro-Asian ring-necked parrots, is a genus of parrots from Africa and Southeast Asia. It is a widespread group with a clear concentration of species in south Asia, but also with representatives in Africa and the islands of the Indian Ocean. This is the only genus of parrot which has the majority of its species in continental Asia. Of all the extant species only Psittacula calthropae, Psittacula caniceps and Psittacula echo do not have a representative subspecies in any part of mainland continental Asia. The rose-ringed parakeet, Psittacula krameri, is one of the most widely distributed of all parrots.

The other two Asian genera, Loriculus and Psittinus are represented by only two species each, which occur in the mainland part of Asia. The majority of the Loriculus species occur on islands. Moreover, since Loriculus is spread across both sides of the Wallace Line it can be considered more Australasian than Asian. These parrots mostly have green plumage, with adults having coloured heads. The bill is stout, and the tail is long and graduated.

Etymology

The genus name Psittacula is a diminutive of the Latin word psittacus meaning "parrot".

Taxonomy

The genus Psittacula was introduced in 1800 by the French naturalist Georges Cuvier.[1] The type species was designated in 1923 by Gregory Mathews as the red-breasted parakeet.[2][3] The name of the genus is a diminutive of the Latin word psittacus for a "parrot".[4]

The genus includes 16 species, of which three are extinct.[5]

Alternative taxonomy

Blossom-headed parakeet, Psittacula roseata

Plum-headed parakeet, Psittacula cyanophala

Slaty-headed parakeet, Psittacula himalayana

Grey-headed parakeet, Psittacula finschii

Layard's parakeet, Psittacula calthrapae

Blue-winged parakeet, Psittacula columboides

Seychelles parakeet, Psittacula wardi

Alexandrine parakeet, Psittacula eupatria

Rose-ringed parakeet, Psittacula krameri krameri

Echo parakeet, Psittacula eques echo

Rose-ringed parakeet, Psittacula krameri manillensis

Rose-ringed parakeet, Psittacula krameri borealis

Blue-rumped parrot, Psittinus cyanurus

Great-billed parrot, Tanygnathus megalorynchos

Azure-rumped parrot, Tanygnathus sumatranus

Long-tailed parakeet, Psittacula longicauda

Red-breasted parakeet, Psittacula alexandri alexandri

Lord Derby's parakeet, Psittacula derbiana

Red-breasted parakeet, Psittacula alexandri fasciata

Red-breasted parakeet, Psittacula alexandri abbotti

Phylogeny of the genus Psittacula based on a study by Michael Braun and coworkers published in 2019.[6]

Genetic evidence has found that the genus Psittacula is likely paraphyletic; for example, genetic analysis has supported merging short-tailed parrots of the genus Tanygnathus, Psittinus, and the extinct Mascarinus with Psittacula.[7] A revised classification was proposed by Michael Braun and coworkers in 2019 that splits the genus Psittacula into multiple monophyletic genera in order to preserve Tanygnathus, Psittinus, and Mascarinus as distinct genera. After the proposed split, the only remaining species in Psittacula sensu stricto are P. derbiana, P. caniceps, and P. alexandri.[6] This is also the taxonomic system followed by the IUCN Red List and BirdLife International. The list of split or monophyletic genera and species (and any of their allied species) is displayed below:

The extinct Mascarene grey parrot (P. bensoni) was not sampled in the study and has not been reclassified to Psittacula sensu lato by the IUCN or BirdLife, so it is still classified in Lophopsittacus under this taxonomy and with the common name Mauritius grey parrot.[8] The Nicobar parrot(P. caniceps) was also not sampled but kept in Psittacula by the authorities that incorporated this taxonomy.[9]

The study has also found that the rose-ringed and red-breasted parrots are likely paraphyletic species themselves, and thus need to be split into multiple species.[6]

Hypothetical extinct species

The Rothschild's or intermediate parakeet P. intermedia, found in northern India, was formerly considered a mystery, as only very few specimens were known. It has since been demonstrated to be a hybrid between the slaty-headed parrot P. himalayana and the plum-headed parrot P. cyanocephala.[10][11]

The taxonomy of the Réunion parakeet P. eques is also confusing. Extinct since 1770, little evidence even exists of the bird's existence. A study skin had been discovered at the Royal Museum of Scotland, explicitly referencing a book description of the Réunion birds. It is known from other descriptions, as well as illustrations of which it is unknown whether they were drawn from live or stuffed specimens. This may be the only material proof of these birds' existence. Taxonomists are unsure if the birds were a distinct species, or conspecific with the echo parakeet, although genetic analysis supports it being a subspecies of the echo parakeet.

References

  1. ^ Cuvier, Georges (1800). Leçons d'Anatomie Comparée (in French). Vol. 1. Paris: Baudouin. Table near end. Archived from the original on 2020-05-25. Retrieved 2018-04-10.
  2. ^ Mathews, Gregory M. (1917). The Birds of Australia. Vol. 6. London: Witherby. p. 169. Archived from the original on 2022-03-21. Retrieved 2022-03-21.
  3. ^ Peters, James Lee, ed. (1937). Check-List of Birds of the World. Vol. 3. Cambridge, Massachusetts: Harvard University Press. p. 241. Archived from the original on 2022-03-21. Retrieved 2022-03-21.
  4. ^ Jobling, James A (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. p. 321. ISBN 978-1-4081-2501-4.
  5. ^ Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (January 2022). "Parrots, cockatoos". IOC World Bird List Version 12.1. International Ornithologists' Union. Archived from the original on 31 July 2018. Retrieved 21 March 2022.
  6. ^ a b c Braun, M.P.; Datzmann, T.; Arndt, T.; Reinschmidt, M.; Schnitker, H.; Bahr, N.; Sauer-Gürth, H.; Wink, M. (2019). "A molecular phylogeny of the genus Psittacula sensu lato (Aves: Psittaciformes: Psittacidae: Psittacula, Psittinus, Tanygnathus, †Mascarinus) with taxonomic implications". Zootaxa. 4563 (3): zootaxa.4563.3.8. doi:10.11646/zootaxa.4563.3.8. PMID 31716534. S2CID 91969786.
  7. ^ Podsiadlowski, Lars; Gamauf, Anita; Töpfer, Till (2017). "Revising the phylogenetic position of the extinct Mascarene Parrot Mascarinus mascarin (Linnaeus 1771) (Aves: Psittaciformes: Psittacidae)". Molecular Phylogenetics and Evolution. 107: 499–502. Bibcode:2017MolPE.107..499P. doi:10.1016/j.ympev.2016.12.022. PMID 28017858.
  8. ^ International), BirdLife International (BirdLife (2016-10-01). "IUCN Red List of Threatened Species: Lophopsittacus bensoni". IUCN Red List of Threatened Species. Archived from the original on 2020-03-04. Retrieved 2021-03-27.
  9. ^ International), BirdLife International (BirdLife (2019-05-31). "IUCN Red List of Threatened Species: Psittacula caniceps". IUCN Red List of Threatened Species. Archived from the original on 2020-03-04. Retrieved 2021-03-27.
  10. ^ Rasmussen, Pamela C.; Collar, Nigel J. (1999). "On the hybrid status of Rothschild's parrot Psittacula intermedia (Aves, Psittacidae)". Bulletin of the Natural History Museum, Zoology Series. 65 (1): 31–50.
  11. ^ Rasmussen, Pamela C.; Collar, Nigel J. (1999). "Little-known Oriental non-bird: Intermediate parrot, Psittacula intermedia" (PDF). Bulletin of the Oriental Bird Club. 29: 36–41. Archived (PDF) from the original on 2018-04-11. Retrieved 2018-04-10.

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