Kobus ellipsiprymnus ssp. ellipsiprymnus
|Scientific Name:||Kobus ellipsiprymnus ssp. ellipsiprymnus (Ogilbyi, 1833)|
|Taxonomic Notes:||Common Waterbuck (Kobus ellipsiprymnus ellipsiprymnus) is one of two subspecies of Waterbuck recognized (formerly regarded as distinct species); the other being Defassa Waterbuck (K. e. defassa). Lorenzen et al. (2006) found a high degree of genetic differentiation between the subspecies and strongly confirmed hybridization in Kenya’s Nairobi N.P. population.|
|Red List Category & Criteria:||Least Concern ver 3.1|
|Assessor(s):||IUCN SSC Antelope Specialist Group|
Listed as Least Concern as numbers are estimated at 105,000, with more than 50% in protected areas and 13% on private land, and there is no evidence that the subspecies approaches the thresholds necessary for listing as Near Threatened or Vulnerable.
|Previously published Red List assessments:|
|Range Description:||Common Waterbuck (Kobus ellipsiprymnus ellipsiprymnus) broadly occurs east of the Eastern Rift Valley, extending southwards to about the Hluhluwe-Umfolozi N.P. in KwaZulu-Natal and central Namibia (Spinage 2013). Common Waterbuck are extinct in Ethiopia, though Defassa Waterbuck remain (Spinage 2013).|
For the distribution map, see the parent species assessment: Kobus ellipsiprymnus.
Native:Angola (Angola); Botswana; Kenya; Malawi; Mozambique; Namibia (Caprivi Strip); Somalia; South Africa; Swaziland; Tanzania, United Republic of; Zambia; Zimbabwe
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||East (1999) produced a global population of approximately 105,000 Common Waterbuck (a conservative corrected continent-wide estimate based mainly on aerial surveys). No recent global population estimate is available. Overall population trend is decreasing.|
Typical density estimates obtained by aerial surveys of areas where the species is reasonably common are of the order 0.05-0.15/km². Ground surveys have provided density estimates of the order 0.4-1.5/km² in areas where the species is common.
|Current Population Trend:||Decreasing|
|Habitat and Ecology:||Inhabits savanna woodlands and forest-savanna mosaics near permanent water (East 1999). Common Waterbuck persist in drier regimes than the Defassa Waterbuck (Spinage 2013). Waterbuck are able to exploit a range of habitats to which its congeners are specifically adapted, albeit only to a varying degree, being not as aquatic as the Lechwe, nor as independent of water as the Kob (Spinage 2013). Waterbuck are classified as grazers, but also browse.|
|Generation Length (years):||7.1|
|Use and Trade:||Waterbuck are hunted for food and sport and are particularly susceptible due to their sedentary nature and fondness for cultivation (Spinage 2013).|
|Major Threat(s):||Common Waterbuck have been eliminated widely within their former range mainly due to hunting (Spinage 2013).|
|Conservation Actions:||Over 50% of Common Waterbuck occur in protected areas, plus 13% on private land (East 1999). Important populations of the Common Waterbuck occur in areas such as Tsavo, Laikipia, Kajiado, Lake Nakuru and the coastal rangelands (Kenya), Tarangire and Selous-Mikumi (Tanzania), the Luangwa Valley (Zambia), and Kruger, Hluhluwe-Umfolozi and private land (South Africa) (East 1999).|
East, R. (compiler). 1999. African Antelope Database 1998. IUCN, Gland, Switzerland and Cambridge, UK.
IUCN. 2017. The IUCN Red List of Threatened Species. Version 2017-2. Available at: www.iucnredlist.org. (Accessed: 14 September 2017).
Lorenzen, E.D., Simonsen, B.T., Kat, P.W., Arctander, P. and Siegismund, H.R. 2006. Hybridization between subspecies of waterbuck (Kobus ellipsiprymnus) in zones of overlap with limited introgression. Molecular Ecology 15: 3787-3799.
Spinage, C.A. 2013. Kobus ellipsiprymnus Waterbuck. In: J. Kingdon & M. Hoffmann (ed.), The Mammals of Africa. VI. Pigs, Hippopotamuses, Chevrotain, Giraffes, Deer, and Bovids, pp. 461-468. Bloomsbury Publishing, London, UK.
|Citation:||IUCN SSC Antelope Specialist Group. 2017. Kobus ellipsiprymnus ssp. ellipsiprymnus. The IUCN Red List of Threatened Species 2017: e.T11039A50190065.Downloaded on 22 January 2018.|
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