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Alcelaphus buselaphus ssp. swaynei 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Cetartiodactyla Bovidae

Scientific Name: Alcelaphus buselaphus ssp. swaynei (P.L. Sclater, 1892)
Parent Species:
Common Name(s):
English Swayne's Hartebeest
Taxonomic Notes: Swayne's Hartebeest or Korkay (Alcelaphus buselaphus swaynei) is one of eight subspecies of Hartebeest, following Gosling and Capellini (2013). The others being: Bubal Hartebeest (A. b. buselaphus); Lichtenstein's Hartebeest (A. b. lichtensteinii); Coke's Hartebeest or Kongoni (A. b. cokii); Tora Hartebeest (A. b. tora); Western Hartebeest or Kanki (A. b. major); Lelwel Hartebeest (A. b. lelwel); and Red Hartebeest (A. b. caama).

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(i,ii,iii,iv)+2ab(i,ii,iii,iv) ver 3.1
Year Published: 2017
Date Assessed: 2016-12-17
Assessor(s): IUCN SSC Antelope Specialist Group
Reviewer(s): Cooke, R.
Justification:
Swayne's Hartebeest is listed as Endangered because it has a small extent of occurrence (EOO) (estimated at around 400 km²) and its area of occupancy (AOO) is only 259 km²; the subspecies now occurs at only two locations, recently reduced from three; and habitat quality is deteriorating due to anthropogenic pressure and encroachment.
Previously published Red List assessments:

Geographic Range [top]

Range Description:Swayne's Hartebeest formerly occurred across the Rift valley of Ethiopia into northwest Somalia (East 1999). The subspecies disappeared from Somaliland (northwest Somalia) in the early 20th century because of rinderpest (Hunt 1951). Now it is effectively restricted to two sites in the Rift Valley of Ethiopia, Senkelle Swayne's Hartebeest Sanctuary, east of Shashamane, and Mazie National Park (N.P). Animals from Senkelle were translocated to to Awash N.P., where they did not survive, and to Nech Sar N.P. where only only one animal remained in 2016, rendering the population ineffective. The total area of the two sites where the subspecies survives (area of occupancy) is 259 km² (Mazie N.P. - 202 km²; and Senkelle Swayne's Hartebeest Sanctuary - 57 km²).

For the distribution map, see parent species assessment: Alcelaphus buselaphus.
Countries occurrence:
Native:
Ethiopia
Regionally extinct:
Somalia
Additional data:
Estimated area of occupancy (AOO) - km2:259Continuing decline in area of occupancy (AOO):Yes
Extreme fluctuations in area of occupancy (AOO):NoEstimated extent of occurrence (EOO) - km2:400
Continuing decline in extent of occurrence (EOO):YesExtreme fluctuations in extent of occurrence (EOO):No
Number of Locations:2Continuing decline in number of locations:Yes
Extreme fluctuations in the number of locations:No
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:In 2008, the total population of Swayne's Hartebeest was estimated at less than 800 (with the majority confined to the Senkelle Swayne's Hartebeest Sanctuary and Maze N.P., and a smaller number in Nech Sar N.P. in Ethiopia) (Antonínová et al. 2008). Mamo et al. (2012) reported 200 in Senkelle and 260 in Mazie N.P. in 2005.

The population in Senkelle has increased since 2008; rangers counted 900 in 2016 (reserve staff, pers. comm. 2016). The Nech Sar population remained stable at 70-90 for about 15 years but then declined due to unknown reasons and only one old male was left in 2016. The current status of the population in Mazie N.P. is not well known but it is believed to number 200-300 (Ethiopian Wildlife Conservation Authority, pers. comm. 2016). The current total population is thus greater than 1,000.
Current Population Trend:Decreasing
Additional data:
Number of mature individuals:600-800Continuing decline of mature individuals:No
Extreme fluctuations:NoPopulation severely fragmented:Yes
Continuing decline in subpopulations:Yes
Extreme fluctuations in subpopulations:NoAll individuals in one subpopulation:No

Habitat and Ecology [top]

Habitat and Ecology:In Somalia, Swayne's Hartebeest previously dominated the central areas of grassland plains, especially in drier areas, with coarser grasses (Gosling and Capellini 2013). The habitat in Senkelle Sanctuary consists of open grassland with some open Acacia woodland on the eastern side.
Systems:Terrestrial
Continuing decline in area, extent and/or quality of habitat:Yes
Generation Length (years):7.5

Use and Trade [top]

Use and Trade: Hartebeest (including Swayne's Hartebeest) are hunted for food and sport and are particularly valued for their high-quality meat (Gosling and Capellini 2013).

Threats [top]

Major Threat(s): The main threats to Hartebeest in general, and including Swayne's Hartebeest, are agro-pastoral development and hunting. Senkelle Swayne's Hartebeest Sanctuary is entirely surrounded by agricultural land and is subject to annual encroachment by domestic cattle when the new grass appears. An investigation among four community associations around Senkelle Sanctuary found 58% of villagers reporting crop depredation by wildlife including Swayne's Hartebeest, widespread demands for resource use, and resentment at the lack of grazing access to the Sanctuary (Kumssa and Bekele 2013).

Conservation Actions [top]

Conservation Actions: Swayne's Hartebeest are now confined entirely to two protected areas: Senkele Swayne's Hartebeest Sanctuary and Mazie N.P. (Gosling and Capellini 2013). The survival of Swayne’s Hartebeest depends on effective protection of these remaining populations, especially in Senkelle.
Senkelle has well motivated staff but suffers from a lack of vehicles and equipment. All-night patrols are conducted during the new-born young hiding period and Golden Jackal Canis aureus and Spotted Hyena Crocuta crocuta, which are believed to take a heavy toll of the young, are controlled.

No individuals are held in captivity.

Citation: IUCN SSC Antelope Specialist Group. 2017. Alcelaphus buselaphus ssp. swaynei. The IUCN Red List of Threatened Species 2017: e.T809A3145291. . Downloaded on 18 December 2017.
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