Hydromyini

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Hydromyini
Central Australian thick-tailed rat (Zyzomys pedunculatus)

Central Australian thick-tailed rat ( Zyzomys pedunculatus )

Systematics
Order : Rodents (Rodentia)
Subordination : Mouse relatives (Myomorpha)
Superfamily : Mice-like (Muroidea)
Family : Long-tailed mice (Muridae)
Subfamily : Old World Mice (Murinae)
Tribe : Hydromyini
Scientific name
Hydromyini
JE Gray , 1825

Hydromyini is the name for a tribe of Old World mice within the long-tailed mouse family . They mostly include species native to Australia and New Guinea and neighboring islands ( old endemics on Sahul ). In his broad view, the tribe consists of seven groups ( divisions ), which also include some representatives of the Philippines ( old endemics of the Philippines).

The central group consists of the representatives of the Hydromys group and the Xeromys group consisting of around ten genera. These are particularly common in the mountainous areas of New Guinea. The constriction of the skull behind the orbit , the simplified, pelvic chewing pattern of the posterior molars and the reduction of the third molar in the upper and lower jaw in a majority of the species represent the constriction of the skull behind the orbit . The conspicuous tooth features are an adaptation to the diet that is before mainly based on vertebrates , insects and crustaceans . Special adaptations to aquatic life can be found in the enlarged hind feet, the elongated and dense vibrissae , the broad snout and the flat tail on the sides.

The Lorentzimys Group and the Pogonomys Group are another large group of at least a dozen genera that predominantly inhabit New Guinea and northern Australia with one form. They are made up of representatives, some of whom live in trees and are equipped with movable prehensile tails or represent large rodents that live purely on the ground.

The Uromys group, in turn, consists of five genera, mostly tree-climbing, rat-like species, whose tails are covered by non-overlapping horn scales and whose molars have transverse rows of cusps on the chewing surface. The species are widespread and occur in New Guinea, the Moluccas and Solomon Islands, and Australia.

In contrast, the eight genera of the Pseudomys group can be found mainly in Australia. They form an ecologically diverse unit of mouse-like shapes, bipedal jumpers adapted to arid regions, nest-building or tree-dwelling species.

The tribe in the broader sense according to Musser and Carleton 2005 and after Lecompte 2008, taking into account more recent findings, is composed as follows:

Internal systematics of the hydromyini according to Rowe et al. 2008
 Hydromyini  
 Plilippine Line  

 Apomys


   

 Archboldomys


   

 Rhynchomys


   

 Chrotomys





 Sahul line  


 Anisomys


   

 Lorentzimys


   


 Macruromys


   

 Surgeons



   

 Hyomys


   

 Pogonomys






   


 Mammelomys


   

 Abeomelomys


   

 Mallomys




   


 Leptomys


   


 Pseudohydromys


   

 Xeromys



   

 Hydromys


   

 Parahydromys





   


 Leggadina


   

 Zyzomys


   

 Notomys


   

 Mastacomys


   

 Pseudomys






   


 Leporillus


   

 Mesembriomys


   

 Conilurus




   

 Uromys


   

 Paramelomys


   

 Solomys


   

 Melomys











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Tribus Hydromyini:

  • Chrotomys group
  • Pseudomys group
  • Hydromys group
  • Xeromys group
  • Uromys group
  • Pogonomys group
  • Lorentzimys group

In a much narrower view, hydromyini are sometimes only used today to refer to the semi-aquatic rodents and the terrestrial New Guinea moss mice, which means that they include the representatives of the Hydromys group and the Xeromys group. The Lorentzimys group and the Pogonomys group are then combined to form the Anisomyini tribe, the Uromys group to the Uromyini and the Pseudomys group to the Conilurini. This structure was mainly represented in the second half of the 20th century. Investigations of the sperm of the Austrasian long-tailed mice in the 1990s showed, however, that the individual tribes did not always form a unit. For this reason, the Hydromyini, the Conilurini and the Uromyini were united in a single tribe in 1994. Later molecular genetic analyzes confirmed the monophyly of the hydromyini in a broader sense, the brush-tailed tree mice from Southeast Asia are regarded as sister taxons .

In tribal history, the hydromyini emerged after the Rattini split off from the rest of the Old World mice in the Middle Miocene around 9.7 million years ago. The Austrasian long-tailed mice then separated from their common ancestors with the brush-tailed tree mice in the transition to the Pliocene 5.5 million years ago. The further diversification of the Hydromyini took place in the course of the Pliocene, New Guinea is considered to be the center. Australia was also settled at this stage, possibly in several waves to the transition to the Pleistocene about 2 million years ago.

literature

  • Kristofer M. Helgen: The amphibious murines of New Guinea (Rodentia, Muridae): the generic status of Baiyankamys and description of a new species of Hydromys. Zootaxa 913, 2005, pp. 1-20
  • Emilie Lecompte, Ken Aplin, Christiane Denys, François Catzeflis, Marion Chades, Pascale Chevret: Phylogeny and biogeography of African Murinae based on mitochondrial and nuclear gene sequences, with a new tribal classification of the subfamily. In: BMC Evolutionary Biology. Vol. 8, 199, 2008, pp. 1-21, doi : 10.1186 / 1471-2148-8-199 .

Individual evidence

  1. ↑ Sharon A. Jansa, F. Keith Barker, and Lawrence R. Heaney: The Pattern and Timing of Diversification of Philippine Endemic Rodents: Evidence from Mitochondrial and Nuclear Gene Sequences. Systamtic Biology 55 (1), 2006, pp. 73-88
  2. ↑ a b c d Emilie Lecompte, Ken Aplin, Christiane Denys, François Catzeflis, Marion Chades, Pascale Chevret: Phylogeny and biogeography of African Murinae based on mitochondrial and nuclear gene sequences, with a new tribal classification of the subfamily. In: BMC Evolutionary Biology. Vol. 8, 199, 2008, pp. 1-21, doi : 10.1186 / 1471-2148-8-199 .
  3. ↑ a b c d e f Kevin C. Rowe, Michael L. Reno, Daniel M. Richmond, Ronald M. Adkins and Scott J. Steppan: Pliocene colonization and adaptive radiations in Australia and New Guinea (Sahul): Multilocus systematics of the old endemic rodents (Muroidea: Murinae). Molecular Phylogenetics and Evolution 47, 2008, pp. 84-101
  4. ^ A b c Kristofer M. Helgen: The amphibious murines of New Guinea (Rodentia, Muridae): the generic status of Baiyankamys and description of a new species of Hydromys. Zootaxa 913, 2005, pp. 1-20
  5. ^ GG Musser and MD Carleton: Superfamily Muroidea. In DE Wilson & DM Reeder (eds.): Mammal Species of the World. 3rd ed. 2005
  6. ↑ Kristofer M. Helgen and Lauren E. Helgen: Biodiversity and Biogeography of the Moss-mice of New Guinea: A Taxonomic Revision of Pseudohydromys (Muridae: Murinae). Bulletin of the American Museum of Natural History 331, 2009, pp. 230–313 doi: 10.1206 / 582-8.1 ( [1] )
  7. ↑ Danilo S. Balete, Eric A. Rickart, Lawrence R. Heaney, Phillip A. Alviola, Melizar V. Duya, Mariano Roy M. Duya, Timothy Sosa and Sharon A. Jansa: Archboldomys (Muridae: Murinae) Reconsidered: A New Genus and Three New Species of Shrew Mice from Luzon Island, Philippines. American Museum Novitates 3754, 2012, pp. 1–60 ( [2] )
  8. ↑ Scott J. Steppan, RM Adkins, PQ Spinks and C. Hale: Multigene phylogeny of the Old World mice, Murinae, reveals distinct geographic lineages and the declining utility of mitochondrial genes compared to nuclear genes. Molecular Phylogenetics and Evolution 37, 200, pp 370-388
  9. ↑ Fred Ford: A splitting headache: relationships and generic boundaries among Australian murids. Biological Journal of the Linnean Society 89, 2006, pp. 117-138