Montane African climbing mouse

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Dendromus insignis
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Family: Nesomyidae
Genus: Dendromus
Species:
D. insignis
Binomial name
Dendromus insignis
(Thomas, 1903)

The montane African climbing mouse or remarkable climbing mouse (Dendromus insignis) is a species of rodent in the family Nesomyidae. [1] It is found in Democratic Republic of the Congo, Kenya, Rwanda, Tanzania, and Uganda. [2]

Contents

Description

The montane African climbing mice have short, soft brown to reddish-brown pelage [3] with a dark stripe down the middle of their backs and dark gray or grayish underparts. [2] They have tails that can equal up to 133% of their head and body length, which taper and are covered in scales and short hair. [4]

Montane African climbing mice have a typical mymorphous zygomatic arch with a narrow infraorbital foramen, due to the prominence of the lower anterior-positioned masseter muscles—resulting in only three molars in a row and grooved upper incisors. [4]

The hind limbs of the montane African climbing mouse are elongated, with hind feet highly specialized for climbing. D. insignis have a reduced inner proximal foot pad, and a reduced first digit with a nail. [4]

The montane African climbing mouse is one of the largest species of the genus Dendromus, with head and body length ranges from 76 mm to 90 mm and weigh from 7-20 g, [5] up to 20% larger than other Dendromus species. Additionally, their head is relatively large compared to other genera of rodents, making up about 27% of their head and body length [4] and resulting in longer molar rows. [2]

Ecology

Behavior and Diet

The montane African climbing mouse avoids predation by being nocturnal, using its well-adapted hind feet to climb twigs and dense grasses and its long hindlimbs to produce long jumps of up to 45 cm. [4] Its climbing agility is used to contribute to its insectivorous and granivorous diet, and allows for nests to be above ground. [4]

Range and Habitat

Its home range of extends through mountainous areas but they generally dwell in heath and alpine zones. [6] They have been documented across a wide range of high altitude locales, including elevations as high as 4240 m. [5] Below 2000 m, grassland meets the montane forest, and D. insignis is less commonly found, as easy-to-climb dense vegetation is reduced. [7]

Related Research Articles

<span class="mw-page-title-main">Cricetidae</span> Family of rodents

The Cricetidae are a family of rodents in the large and complex superfamily Muroidea. It includes true hamsters, voles, lemmings, muskrats, and New World rats and mice. At almost 608 species, it is the second-largest family of mammals, and has members throughout the Americas, Europe and Asia.

<span class="mw-page-title-main">Nesomyidae</span> Family of rodents

The Nesomyidae are a family of African rodents in the large and complex superfamily Muroidea. It includes several subfamilies, all of which are native to either continental Africa or to Madagascar. Included in this family are Malagasy rodents, climbing mice, African rock mice, swamp mice, pouched rats, and the white-tailed rat.

<span class="mw-page-title-main">Eumuroida</span> Clade of rodents

The Eumuroida are a clade defined in 2004 by Steppan et al. that includes rats, mice and related species, though not all rodents; in other words, a specific group of muroid rodents. The clade is not defined in the standard taxonomic hierarchy, but it is between superfamily and family.

<span class="mw-page-title-main">Pouched rat</span> Subfamily of rodents

Pouched rats are a group of African rodents in the subfamily Cricetomyinae. They are members of the family Nesomyidae, which contains other African muroids such as climbing mice, Malagasy mice, and the white-tailed rat. All nesomyids are in the superfamily Muroidea, a large and complex clade containing 14 of all mammal species. Sometimes the pouched rats are placed in the family Muridae along with all other members of the superfamily Muroidea.

<span class="mw-page-title-main">Dendromurinae</span> Subfamily of rodents

Dendromurinae is a subfamily of rodents in the family Nesomyidae and superfamily Muroidea. The dendromurines are currently restricted to Africa, as is the case for all extant members of the family Nesomyidae. The authorship of the subfamily has been attributed to both Alston, 1876, and (incorrectly) to G. M. Allen, 1939.

<span class="mw-page-title-main">Woodland jumping mouse</span> Species of rodent

The woodland jumping mouse is a species of jumping mouse found in North America. It can jump up to 3 m (9.8 ft) using its extremely strong feet and long tail.

<i>Dendromus</i> Genus of rodents

Mice in the genus Dendromus are commonly referred to as African climbing mice or tree mice, although these terms are often used to describe all members of the subfamily Dendromurinae. The genus is currently restricted to sub-Saharan Africa, but fossils classified in the genus have been found from Late Miocene deposits in Arabia and Europe.

<i>Apomys</i> Genus of rodents

Apomys, commonly known as earthworm mice, is a genus of rodent endemic to the Philippines. Mice belonging to this genus are generally called Philippine forest mice and can be found on most islands of the Philippines except in Palawan, the Sulu Archipelago, and the Batanes and Babuyan group of islands.

<span class="mw-page-title-main">Jackson's mongoose</span> Species of mongoose from Central Africa

Jackson's mongoose is a mongoose species native to montane forests in Kenya, Uganda and Tanzania. It appears to be rare and has been classified as Near Threatened since 2008.

The Kivu climbing mouse is a species of rodent in the family Nesomyidae. It is found in Burundi, Democratic Republic of the Congo, Rwanda, Malawi, Tanzania, Uganda, and Zambia. Its natural habitats are subtropical or tropical moist montane forests, subtropical or tropical high-altitude grassland, swamps, arable land, and plantations.

<span class="mw-page-title-main">Gray climbing mouse</span> Species of rodent

The gray climbing mouse is a species of rodent in the family Nesomyidae. It is found in Angola, Benin, Botswana, Democratic Republic of the Congo, Ethiopia, Guinea, Liberia, Malawi, Mozambique, Namibia, Nigeria, Rwanda, South Africa, Eswatini, Tanzania, Uganda, Zambia, and Zimbabwe. Its natural habitats are dry savanna, Mediterranean-type shrubby vegetation, subtropical or tropical dry lowland grassland, and temperate desert.

Brants's climbing mouse is a species of rodent in the family Nesomyidae. It is found in Botswana, Democratic Republic of the Congo, Kenya, Malawi, Mozambique, Namibia, South Africa, Tanzania, and Zambia. Its natural habitats are subtropical or tropical moist montane forests, dry savanna, Mediterranean-type shrubby vegetation, and subtropical or tropical high-altitude grassland.

<span class="mw-page-title-main">Chestnut climbing mouse</span> Species of rodent

The chestnut climbing mouse is a species of rodent in the family Nesomyidae. It is found in Angola, Democratic Republic of the Congo, Ethiopia, Kenya, Lesotho, Malawi, Mozambique, Rwanda, South Africa, Eswatini, Tanzania, Uganda, Zambia, and Zimbabwe. Its natural habitats are dry savanna and moist savanna.

The Cameroon climbing mouse is a species of rodent in the family Nesomyidae which is endemic to the montane grasslands on three mountains in Cameroon.

The montane hylomyscus or montane wood mouse is a species of rodent in the family Muridae. A long-coated species with brownish-grey upper parts and whitish-grey underparts, it occurs in the uplands of tropical Central Africa where its natural habitat is tropical moist montane forests.

The southern climbing mouse is a species of rodent in the family Cricetidae. It is found in Argentina and Bolivia in forested valleys and on slopes on the eastern side of the Andes Mountains.

The tiny fat mouse is a species of rodent in the family Nesomyidae. It is found in Angola, Botswana, Ethiopia, Kenya, Mozambique, Namibia, South Sudan, Tanzania, Uganda, Zambia, and Zimbabwe. Its natural habitats are subtropical or tropical dry shrubland and subtropical or tropical dry lowland grassland.

<i>Voalavo</i> Genus of rodents from Madagascar

Voalavo is a genus of rodent in the subfamily Nesomyinae, found only in Madagascar. Two species are known, both of which occur in mountain forest above 1250 m (4100 ft) altitude; the northern voalavo lives in northern Madagascar and eastern voalavo is restricted to a small area in the central part of the island. The genus was discovered in 1994 and formally described in 1998. Within Nesomyinae, it is most closely related to the genus Eliurus, and DNA sequence data suggest that the current definitions of these two genera need to be changed.

<span class="mw-page-title-main">Northern voalavo</span> Rodent in the family Nesomyidae

The northern voalavo, also known as the naked-tailed voalavo or simply the voalavo, is a rodent in the family Nesomyidae found in the Northern Highlands of Madagascar. Discovered in 1994 and formally described in 1998, it is the type species of the genus Voalavo; its closest relative is the eastern voalavo of the Central Highlands. DNA sequencing suggests that it may be more closely related to Grandidier's tufted-tailed rat than to other species of the closely related genus Eliurus. The northern voalavo is found at 1,250 to 1,950 m above sea level in montane wet and dry forests in the Marojejy and Anjanaharibe-Sud massifs. Nocturnal and solitary, it lives mainly on the ground, but it can climb and probably eats plant matter. Despite having a small range, the species is classified as being of least concern because it lacks obvious threats and much of its range is within protected areas.

<span class="mw-page-title-main">Malagasy mountain mouse</span> Small rodent found in the highlands of eastern Madagascar

The Malagasy mountain mouse or Koopman's montane voalavo is a rodent within the subfamily Nesomyinae of the family Nesomyidae. It is monotypic within the genus Monticolomys, and is closely related to the big-footed mouse (Macrotarsomys). It is found in the highlands of eastern Madagascar. A small mouse-like rodent, it is dark brown on the upperparts and dark gray below. It has small, rounded, densely haired ears and broad feet with well-developed pads. The long tail lacks a tuft at the tip. The skull is delicate and lacks crests and ridges on its roof.

References

  1. 1 2 Cassola, F. (2016). "Dendromus insignis". IUCN Red List of Threatened Species . 2016: e.T6440A22234456. doi: 10.2305/IUCN.UK.2016-2.RLTS.T6440A22234456.en . Retrieved 17 November 2021.
  2. 1 2 3 Reeder, Don (2005). Mammal Species of the World : A Taxonomic and Geographic Reference (12 ed.). Baltimore: Johns Hopkins Univ. Press. p. 937.
  3. Dieterlen, Fritz (2005). "Climbing mice of the genus Dendromus (Nesomyidae, Dendromurinae) in Sudan and Ethiopia, with the description of a new species". Bonner Zoologische Beiträge. 56: 185–200.
  4. 1 2 3 4 5 6 Miljutin, Andrei (2006). "African Climbing Mice (, Muroidea) and Palaearctic Birch Mice (, Dipodoidea): An Example of Parallel Evolution Among Rodents". Acta Zoologica Lituanica. 16 (2): 84–92. doi:10.1080/13921657.2006.10512714.
  5. 1 2 Stanley, William T.; Rogers, Mary Anne; Kihaule, Philip M.; Munissi, Maiko J. (2014). "Elevational Distribution and Ecology of Small Mammals on Africa's Highest Mountain". PLOS ONE. 9 (11): e109904. doi: 10.1371/journal.pone.0109904 . PMC   4220923 . PMID   25372387.
  6. Grimshaw, J.M.; Cordeiro, N.J.; Foley, C.A.H. (1995). "The Mammals of Kilimanjaro". Journal of East African Natural History. 84 (2): 126. doi: 10.2982/0012-8317(1995)84[105:tmok]2.0.co;2 .
  7. Clausnitzer, V.; Kityo, R. (2012). "Altitudinal distribution of rodents (Muridae and Gliridae) on Mt Elgon, Uganda". Tropical Zoology. 14 (1): 95–118. doi:10.1080/03946975.2001.10531145. S2CID   84262284.