Otomys

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African vlei rats
Temporal range: Late Pliocene - Recent
Otomys irroratus 8231s.jpg
Otomys irroratus grazing on clover.
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Family: Muridae
Tribe: Otomyini
Genus: Otomys
F. Cuvier, 1824
Type species
Euryotis irrorata [1]
Species

26, see text

Synonyms
  • Anchotomys Thomas, 1918 [1]
  • Euryotis Brants, 1827
  • Lamotomys Thomas, 1918
  • Oreinomys Trouessart, 1880
  • Oreomys Heuglin, 1877
  • Palaeotomys Broom, 1937
  • Prototomys Broom, 1948

African vlei rats (Otomys), also known as groove-toothed rats, live in many areas of sub-Saharan Africa. Most species live in marshlands, grasslands, and similar habitats [2] and feed on the vegetation of such areas, occasionally supplementing it with roots and seeds. The name "vlei" refers to the South African term for intermittent, seasonal, or perennial bodies of standing water.

Otomys are compact rodents with a tendency to shorter faces and legs than other types of rats. The tails also are shorter than most Muridae, typically between one third and two thirds of the body length. [3] The coat colour varies according to species, [2] but generally they have the brown-to-grey agouti coats typical of mice and other small wild rodents. Species living in warm or temperate regions tend to have unusually large ears for murids (e.g. Otomys irroratus), whereas some of the alpine species, such as Otomys sloggetti have markedly smaller ears. (However, the latter species may no longer belong in the genus Otomys.)

Depending on the species adult Otomys have a body length between 12 and 22 cm (5–9 inches) and weigh 90 to 260 grams (3–9 oz).

Species

Genus Otomys [1] - groove-toothed or vlei rats

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<span class="mw-page-title-main">Southern African vlei rat</span> Species of rodent

The Southern African vlei rat is a species of rodent in the vlei rat genus, Otomys, of the family Muridae in the order Rodentia. This is the type species of the genus. It is native to the grasslands and swamps of southern Africa where it is a common species.

The laminate vlei rat is a species of rodent in the family Muridae. It is found only in South Africa. Its natural habitats are subtropical or tropical high-altitude grassland and swamps.

<span class="mw-page-title-main">Afroalpine vlei rat</span> Species of rodent

The afroalpine vlei rat is a species of rodent in the family Muridae. It is found in the high moorlands of Kenya.

<span class="mw-page-title-main">Sloggett's vlei rat</span> Species of rodent

Sloggett's vlei rat or ice rat is a species of rodent in the family Muridae. It is found in southern Lesotho and South Africa where its natural habitats are subtropical or tropical high-altitude grassland, swamps, and rocky areas. Its name commemorates Col. Arthur Sloggett who served in South Africa and collected at Deelfontein in 1902. This is a common species and the International Union for Conservation of Nature has rated it as being of "least concern".

The Ethiopian vlei rat is a species of vlei rat in the rodent family Muridae. It is found only in Ethiopia and is considered endemic.

<span class="mw-page-title-main">Bush vlei rat</span> Species of rodent

The bush vlei rat or Karoo bush rat is a species of rodent in the family Muridae. It is found in Namibia and South Africa. Its natural habitat is temperate shrubland. The Karoo rat uses behavioral adaptations to cope with the dry arid climate. It is a medium-sized rodent with a dark pelage on top and lighter underneath. It has light colored feet and a dark tail. The rat may have light colored fur around its eyes and the back of its ears.

The Uzungwe vlei rat is a species of rodent in the family Muridae. It is found in Malawi, Tanzania, and Zambia. Its natural habitats are subtropical or tropical high-altitude grassland and swamps. It is threatened by habitat loss.

The Cheesman's vlei rat is a species of rodent in the family Muridae. It is considered endemic to northwestern Ethiopia.

The Simien vlei rat is a species of rodent in the family Muridae. It is found in northern Ethiopia.

The Yalden's vlei rat is a species of rodent in the family Muridae. It is found in the Bale Mountains, in southwestern Ethiopia.

Thomas's vlei rat is a species of rodent in the family Muridae. It is endemic to Kenya's high plateau mountains of the Rift Valley.

Mount Kilimanjaro vlei rat is a species of rodent in the family Muridae. It is found in north-eastern Tanzania, on Mount Kilimanjaro.

Charada vlei rat is a species of rodent in the family of Muridae. It is endemic to southwestern Ethiopia.

Heller's vlei rat is a species of rodent in the family of Muridae. It is endemic to Ethiopia and is found on the Arussi Plateau and the Bale Mountains.

References

  1. 1 2 3 Wilson, D. E.; Reeder, D. M., eds. (2005). "Genus Otomys". Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. ISBN   978-0-8018-8221-0. OCLC   62265494.
  2. 1 2 The Kingdon Pocket Guide to African Mammals, Jonathan Kingdon (2004) Russel Friedman Books ISBN   1-875091-14-9
  3. Mills, Gus & Hes, Lex (1997). The Complete Book of Southern African Mammals. Cape Town: Struik Publishers. ISBN   0947430555.
  4. 1 2 3 4 5 6 7 Taylor, Peter J.; Lavrenchenko, Leonid A.; Carleton, Michael D.; Verheyen, Erik; Bennett, Nigel C.; Oosthuizen, Carel J.; Maree, Sarita (2011). "Specific limits and emerging diversity patterns in East African populations of laminate-toothed rats, genus Otomys (Muridae: Murinae: Otomyini): Revision of the Otomys typus complex" (PDF). Zootaxa. 3024 (1): 1–66. doi:10.11646/zootaxa.3024.1.1. hdl: 2263/18125 .