Williams's jerboa
{{Short description|Species of mammal}}
{{Speciesbox
| name = Williams's jerboa
| image = Allactaga williamsi 177950563.jpg
| image_alt =
| image_caption =
| status = LC
| status_system = IUCN3.1
| genus = Scarturus
| species = williamsi
| authority = (Thomas, 1897)
| synonyms = Allactaga williamsi
| synonyms_ref =
}}
Williams's jerboa (Scarturus williamsi) is a species of jerboas native to Afghanistan, Armenia, Azerbaijan, Iran and Turkey.
Description
Similar to the other jerboas in the Allactaga and Scarturus genera, the Williams's Jerboa are small hopping rodents of desert regions and have large ears and a long tail. The tail assists and serves as support when the jerboa is standing upright.Kirmiz, John P. Adaptation to Desert Environment; A Study on the Jerboa, Rat and Man. London: Butterworths, 1962. 17. Print. They have long hind feet and short forelegs.Lagassé, Paul. "Jerboa." The Columbia Encyclopedia. 6th ed. New York: Columbia UP, 2000. Academic Search Premier. Web. 1 October 2013. The forelimbs of the jerboa serve as a pair of hands for feeding, grooming, etc.Kirmiz, John P. Adaptation to Desert Environment; A Study on the Jerboa, Rat and Man. London: Butterworths, 1962. 29. Print. The males in this species do not have bacula.TOYRAN, Kubilay, and İrfan ALBAYRAK. "[https://www.researchgate.net/profile/Kubilay_Toyran/publication/286379096_Contribution_to_the_Biological_Characteristics_of_Allactaga_williamsi_Thomas_1897_in_Kirikkale_Province_Mammalia_Rodentia/links/5668438708ae7dc22ad16265/Contribution-to-the-Biological-Characteristics-of-Allactaga-williamsi-Thomas-1897-in-Kirikkale-Province-Mammalia-Rodentia.pdf Contribution to the Biological Characteristics of Allactaga williamsi Thomas, 1897 in Kırıkkale Province (Mammalia: Rodentia).]" International Journal of Natural and Engineering Sciences 3.1 (2009): 13-17.
Distribution and habitat
Williams's jerboa is native to Anatolia, Armenia, Azerbaijan, Georgia, Iran, Turkey and northwestern Iran. A separate population is found in central Afghanistan. Its typical habitat is steppe with scanty vegetation cover. It occurs in disturbed areas when sufficient suitable habitat remain but is not normally found in cultivated areas. It favours semi-arid regions and the foothills of mountainous regions. In the west of its range it is found at altitudes of up to {{convert|360|m}} but ranges as high as {{convert|3200|m}} in Afghanistan.
Behaviour
Williams's jerboa is mainly nocturnal and spends the day in a system of burrows. Emerging at night, it feeds on insects and plant material.Ercüment, Colak. "Ecology and Biology of Allactaga Elater, Allactaga Euphratica and Allactaga Williamsi (Rodentia: Dipodidae) in Turkey." Tr. J. of Zoology (1996): 105.Tr. J. of Zoology. Web. 3 Oct. 2013. http://journals.tubitak.gov.tr/zoology/issues/zoo-98-22-2/zoo-22-2-3-97042.pdf {{Webarchive|url=https://web.archive.org/web/20131203021812/http://journals.tubitak.gov.tr/zoology/issues/zoo-98-22-2/zoo-22-2-3-97042.pdf |date=2013-12-03 }}>. The Williams's jerboa is a common food source for the long-eared owl in Turkey.Hizal, Erdem. "Diet of the Long Eared Owl, Asio Otus, in Central Anatolia (Aves: Strigidae)."Zoology in the Middle East 59.2 (2013): 118. Web. 5 Oct. 2013. http://www.tandfonline.com/doi/pdf/10.1080/09397140.2013.810866#.UlNd4dLoaSo>. Breeding takes place in spring and summer when two litters, each consisting of three to six young, are reared.
Status
Williams's jerboa has a wide range and, although it is found at relatively low densities, its total population is presumed to be large. It is common in parts of Azerbaijan but is rarer and has become locally extinct in parts of Turkey. The major threat it faces is the conversion of its steppe habitat into cultivated land. The International Union for Conservation of Nature has listed its conservation status as being of "least concern".