Hildegarde's Broad-headed Mouse
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Hildegarde's broad-headed mouse (''Zelotomys hildegardeae'') or Hildegarde's zelotomys is a species of
rodent Rodents (from Latin , 'to gnaw') are mammals of the Order (biology), order Rodentia ( ), which are characterized by a single pair of continuously growing incisors in each of the upper and Mandible, lower jaws. About 40% of all mammal specie ...
in the family
Muridae The Muridae, or murids, are either the largest or second-largest family of rodents and of mammals, containing approximately 870 species, including many species of mice, rats, and gerbils found naturally throughout Eurasia, Africa, and Australia. ...
. It is found in
Central Africa Central Africa (French language, French: ''Afrique centrale''; Spanish language, Spanish: ''África central''; Portuguese language, Portuguese: ''África Central'') is a subregion of the African continent comprising various countries accordin ...
.


Taxonomy

This mouse was first described in 1902 by the British zoologist
Oldfield Thomas Michael Rogers Oldfield Thomas (21 February 1858 – 16 June 1929) was a British zoologist. Career Thomas worked at the Natural History Museum, London, Natural History Museum on mammals, describing about 2,000 new species and subspecies for ...
. The
specific name Specific name may refer to: * in Database management systems, a system-assigned name that is unique within a particular database In taxonomy, either of these two meanings, each with its own set of rules: * Specific name (botany), the two-part (bino ...
"''hildegardeae''" was given in honour of the British anthropologist Hildegarde Beatrice Hinde, who spent twenty-four years in Africa with her husband Sidney Langford Hinde, a colonial administrator; she studied East African languages, writing several grammars and vocabularies..


Description

Hildegarde's broad-headed mouse grows to a head-and-body length of about . The head is broad with pale grey to white cheeks and whitish chin and throat. The whiskers are dark and the ears are dark and nearly naked, with a scattering of pale hairs. The fur is dense and soft; the dorsal surface of the head and body is greyish-brown or grey and the underparts are whitish or pale greyish-brown, the two colours merging on the flanks. The limbs are whitish, the feet sometimes having pale brown upper surfaces. The tail is about 70% of the head-and-body length; it bears rings of small scales and is scantily haired, with short white or greyish-brown hairs. This mouse produces a strong, unpleasant odour which may deter predators.


Distribution and habitat

This mouse is
endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...
to tropical Central Africa. Its range extends from Angola, northern Zambia and southern Democratic Republic of the Congo, eastwards to Tanzania, and northwards to Uganda, Kenya and South Sudan. Individuals recorded in southern Angola were probably the closely related Woosnam's broad-headed mouse (''Zelotomys woosnami''). Its typical habitat is moist
savanna A savanna or savannah is a mixed woodland-grassland (i.e. grassy woodland) biome and ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach th ...
, tall grassland and scrub, often at the edge of swamps or forests. It is often found in areas of ''
Imperata cylindrica ''Imperata cylindrica'' (commonly known as cogongrass or kunai grass ) is a species of Perennial plant, perennial rhizomatous grass native to tropical and subtropical Asia, Micronesia, Melanesia, Australia, Africa, and Southern Europe. It has al ...
'' grassland. In northern Malawi it has been recorded in pine plantations and in close proximity to human habitations. Its altitudinal range is unknown.


Ecology

This mouse is a partially diurnal and
nocturnal Nocturnality is a ethology, behavior in some non-human animals characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal", versus diurnality, diurnal meaning the opposite. Nocturnal creatur ...
species, and in captivity, is active throughout the night. It forages on the ground under cover of the long grasses and foliage and feeds mainly on
arthropod Arthropods ( ) are invertebrates in the phylum Arthropoda. They possess an arthropod exoskeleton, exoskeleton with a cuticle made of chitin, often Mineralization (biology), mineralised with calcium carbonate, a body with differentiated (Metam ...
s, such as grasshoppers and crickets,
dung beetle Dung beetles are beetles that feed on feces. All species of dung beetle belong to the superfamily Scarabaeoidea, most of them to the subfamilies Scarabaeinae and Aphodiinae of the family Scarabaeidae (scarab beetles). As most species of Scara ...
s, other insects and
myriapod Myriapods () are the members of subphylum Myriapoda, containing arthropods such as millipedes and centipedes. The group contains about 13,000 species, all of them terrestrial. Although molecular evidence and similar fossils suggests a diversifi ...
s, with some fruit. It communicates with other individuals by making high-pitched whistles. Despite its strong smell, it is preyed on by small
carnivore A carnivore , or meat-eater (Latin, ''caro'', genitive ''carnis'', meaning meat or "flesh" and ''vorare'' meaning "to devour"), is an animal or plant Plants are the eukaryotes that form the Kingdom (biology), kingdom Plantae; they ar ...
s. In Kenya, pregnant females have been found in June and November, while in Uganda, they have been found in February, March, May, June and July. The litter size is usually between three and seven.


Status

Hildegarde's broad-headed mouse has a very wide range but is nowhere particularly common. No specific threats have been identified and the mouse is present in a number of protected areas, so the
International Union for Conservation of Nature The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources. Founded in 1948, IUCN has become the global authority on the stat ...
has assessed its conservation status as being of "
least concern A least-concern species is a species that has been evaluated and categorized by the International Union for Conservation of Nature (IUCN) as not being a focus of wildlife conservation because the specific species is still plentiful in the wil ...
".


References

{{DEFAULTSORT:mouse, broad-headed, Hildegarde's Hildegarde's broad-headed mouse Rodents of Africa Fauna of Central Africa Mammals of Sub-Saharan Africa Taxa named by Oldfield Thomas Hildegarde's broad-headed mouse Taxonomy articles created by Polbot