Overview

Distribution

Range Description

This species is endemic to the Philippines, where is found only on Mindoro (Heaney et al. 1998). Surveys conducted in the late 1990’s indicated the species is now mostly confined to the central and north-western mountain ranges higher elevations.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This species was formerly found in most habitats, from sea level to upper montane areas. It now occurs in lowland, mid-montane and dry-molave forests and savanna grasslands (Gonzalez et al1999), being mainly restricted to higher elevations.

Systems
  • Terrestrial
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
EN
Endangered

Red List Criteria
B1ab(iii,v)+2ab(iii,v)

Version
3.1

Year Assessed
2008

Assessor/s
Oliver, W.

Reviewer/s
Leus, K. & Oliver, W. ( Pig, Peccary & Hippo Red List Authority)

Contributor/s

Justification
Listed as Endangered, because its extent of occurrence is less than 5,000 km² and its area of occupancy is less than 500 km², its distribution is severely fragmented, and there is a continuing decline in the extent and quality of its habitat, and in the number of mature individuals to hybridisation and over-hunting.
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Population

Population
Its population size is unknown, but it is fragmented and declining.

Population Trend
Decreasing
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Threats

Major Threats
The main threats to this species include widespread destruction of former forest habitats, evident weaknesses in the existing protected areas network on Mindoro, and anomalies in local legislation pertaining to allowable hunting of threatened versus non-threatened’ species by local indigenous peoples. Many (perhaps most) of Mindoro’s remaining forest areas are also severely threatened by commercial mining claims and salient ‘pro-mining’ agendas by many of the relevant Philippine governmental authorities. Genetic contamination via hybridisation with free-ranging domestic pigs maintained in hinterland communities is also known to occur in Mindoro and might pose the single most important threat to the genetic integrity of this species (Gonzalez et al, 1999; W. Oliver pers. comm.). It is also hunted for food, bushmeat trade and local ceremonials.
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Management

Conservation Actions

Conservation Actions
The species occurs in several designated protected areas, though most of these exist only on paper. The clear exception is Mount Iglit-Baco Natural Park, though this area largely comprises of a former cattle ranch and therefore also largely composed of grasslands unlikely to adequately support representative biodiversity in this globally critical region. Reinforcement of existing legislation, more effective protection of the few remaining natural habitats of Mindoro, research to identify pure populations, and increased public awareness, are all needed as a matter of some urgency for the conservation of this and other Mindoron endemic species (Boitani et al. 2006; Gonzalez et al, 1999).
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Wikipedia

Oliver's warty pig

Oliver's warty pig (Sus oliveri), or Mindoro warty pig is a small species of pig which can only be found on the island of Mindoro in the central Philippines. This species previously treated to be a subspecies of S. philippensis, was shown to be morphologically and genetically different.[2][3][4]

This species is heavily hunted and is extremely rare.

See also[edit]

References[edit]

  1. ^ Oliver, W. (2008). Sus oliveri. In: IUCN 2008. IUCN Red List of Threatened Species. Retrieved 5 April 2009. Database entry includes a brief justification of why this species is of endangered.
  2. ^ Grubb, P. 2005. "Order Artiodactyla". pp. 637–722 in Wilson, D.E. & Reeder, D.M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference. 3rd ed.
  3. ^ Groves, C.P. (1997). "Taxonomy of wild pigs (Sus) of the Philippines". Zoological Journal of the Linnean Society 120 (2): 163–191. doi:10.1111/j.1096-3642.1997.tb01277.x. 
  4. ^ Lucchini, V., Meijaard, E., Diong, C. H., Groves, C. P. & Randi, E. (2005). "New phylogenetic perspectives among species of South-east Asian wild pig (Sus sp.) based on mtDNA sequences and morphometric data". Journal of Zoology 266: 25–35. doi:10.1017/S0952836905006588. 
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