Overview

Distribution

Range Description

The range of the Silver Dik-dik is usually given as being confined to the central coastal plain of Somalia, where its range does not appear to extend for more than 10 km inland from the coast (Simonetta 1988; East 1999). Recently, this species has been reliably reported (and photographed) further up the Shebelle River valley and in the valley bottoms of its seasonal tributaries in the Ogaden of Ethiopia (Wilhelmi et al. 2006).
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
The Silver Dik-dik occurs in very low, dense thickets growing along the central Somali coastal littoral on fertile, sandy soils under a powerful offshore wind which has a cooling and moisturising effect (Kingdon 1997). In the south-eastern part of the Ethiopian Ogaden, Silver Dik-dik have been observed in dense to semi-dense Acacia-Commiphora bushland (Wilhelmi et al. 2006).

Systems
  • Terrestrial
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
DD
Data Deficient

Red List Criteria

Version
3.1

Year Assessed
2008

Assessor/s
IUCN SSC Antelope Specialist Group

Reviewer/s
Mallon, D.P. (Antelope Red List Authority) & Hoffmann, M. (Global Mammal Assessment)

Contributor/s

Justification
East's (1999) estimate suggested that the total population size could be up to 30,000 (and this was prior to the discovery of the species in the Ogaden of Ethiopia). No field data have been collected from its known range in Somalia for many years, and the extent of its distribution in Ethiopia (where it has only recently been recorded) and population density are unknown, as is information on whether these two reported areas of its range are disjunct or connected. This lack of information makes it impossible to reach a meaningful assessment. However, if current population trends continue, the Silver Dik-dik’s population will continue to decline to threatened.

History
  • 1996
    Vulnerable
  • 1994
    Insufficiently Known
    (Groombridge 1994)
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Population

Population
East (1999) produced an estimated total population of 30,000, perhaps an overestimate, since hunting pressures and other disturbances are relatively high within the Silver Dik-dik’s restricted range. In the Ethiopian Ogaden, where this species is probably on the very edge of its range, a density of 1–2 individuals was estimated in an area of less than 2,000 m² (Wilhelmi et al. 2006).

Population Trend
Decreasing
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Threats

Major Threats
The habitat of the Silver Dik-dik is threatened by increased human presence and activity, e.g., during the worst period of the civil war many people fled along the coastal roads which were also used by large numbers of heavily armed fighters and their vehicles. Its skins are highly valued for handcraft products.
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Management

Conservation Actions

Conservation Actions
This species is not known to occur in any protected areas, and no animals are held in captivity. The decline of this species can only be reversed by the establishment of secure protected areas within its range and/or the establishment of a secure, self-sustaining captive population (East 1999). Given the recent discovery of this species in the Ogaden, further surveys to better understand the range of this species are required.
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Wikipedia

Silver dik-dik

The silver dik-dik (Madoqua piacentinii) is a small antelope found in low, dense thickets along the southeastern coast of Somalia and in Acacia-Commiphora bushland in the Shebelle Valley in southeastern Ethiopia.[1] It is the smallest species of dik-dik, with a length of 45–50 cm (18–20 in), a height of 30–33 cm (12–13 in) and a weight of 2–3 kg (4.4–6.6 lb).[2] Its back and flanks are grizzled silvery, while the limbs, ears and muzzle are ochraceus in colour.[2] Little is known about its status, but numbers are believed to be decreasing.[1]

Together with the closely related Salt's dik-dik, this species forms the subgenus Madoqua in the genus Madoqua (other dik-diks are also in the genus Madoqua, but the subgenus Rhynchotragus).[3][4] The taxonomy of this subgenus is complex and a matter of dispute. Though most recent authorities treat the silver dik-dik as a monotypic species,[1][5] the silver dik-dik has been suggested as a subspecies of the Swayne's dik-dik[3] (itself now usually treated as a subspecies of the Salt's dik-dik).[4]

References[edit]

  1. ^ a b c d IUCN SSC Antelope Specialist Group (2008). Madoqua piacentinii. In: IUCN 2008. IUCN Red List of Threatened Species. Retrieved 29 March 2009. Database entry includes a brief justification of why this species is of data deficient.
  2. ^ a b Kingdon, J. (1997). The Kingdon Guide to African Mammals. Academic Press. ISBN 0-12-408355-2
  3. ^ a b Ansell, W. F. H. (1972). Order Artiodactyla. Part 15. Pp. 1-84. in: Meester, J., and H. W. Setzer, eds (1972). The mammals of Africa: An identification manualSmithsonian Institution Press, Washington, D.C.
  4. ^ a b Wilson, D. E.; Reeder, D. M., eds. (2005). Mammal Species of the World (3rd ed.). Johns Hopkins University Press. ISBN 978-0-8018-8221-0. OCLC 62265494. 
  5. ^ Wilson, D. E.; Reeder, D. M., eds. (2005). Mammal Species of the World (3rd ed.). Johns Hopkins University Press. ISBN 978-0-8018-8221-0. OCLC 62265494. 
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