Mountain Anoa
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The mountain anoa ''(Bubalus quarlesi)'' also known as Quarle's anoa, is a species of buffalo endemic to
Sulawesi Sulawesi ( ), also known as Celebes ( ), is an island in Indonesia. One of the four Greater Sunda Islands, and the List of islands by area, world's 11th-largest island, it is situated east of Borneo, west of the Maluku Islands, and south of Min ...
. Its closest relative is the
lowland anoa The lowland anoa ''(Bubalus depressicornis)'' is a species of buffalo endemic to Sulawesi. Its closest relative is the mountain anoa, and it is still a debate as to whether the two are the same species or not. It is also related to the water bu ...
, and it is still a debate as to whether the two are the same species or not. It is also related to the
water buffalo The water buffalo (''Bubalus bubalis''), also called domestic water buffalo, Asian water buffalo and Asiatic water buffalo, is a large bovid originating in the Indian subcontinent and Southeast Asia. Today, it is also kept in Italy, the Balkans ...
, and both are classified in the genus ''
Bubalus ''Bubalus'' is a genus of Asiatic bovines that was proposed by Charles Hamilton Smith in 1827. ''Bubalus'' and '' Syncerus'' form the subtribe Bubalina, the true buffaloes. The International Code of Zoological Nomenclature and classification ...
''.


Taxonomy

Skulls of
anoa Anoa, also known as dwarf buffalo and ''sapiutan'', are two species of the genus ''Bubalus'', placed within the subgenus ''Anoa'' and endemic to the island of Sulawesi in Indonesia: the mountain anoa (''Bubalus quarlesi'') and the lowland ano ...
cannot be accurately identified as to species, and there is likely hybridizing and interbreeding between the mountain anoa and lowland anoa in the zoo population. It is questioned as to whether the two species were different due to them occurring together in many different areas, as well as some interbreeding. A study of the mtDNA of ten specimens from different localities found a high mitochondrial genetic diversity between individuals identified as one or the other species, indicating support for recognition as two species. The extinct '' Bubalus grovesi'' of southern Sulawesi appears to be a close relative of both anoa species.


Description

Standing at only at the shoulder, the mountain anoa is the smallest of all living wild cattle, even slightly smaller than the lowland anoa. Both species typically weigh between . Compared to lowland anoa, mountain anoa have longer, woolier hair that moults every year, showing faint spots on the head, neck, and limbs. According to Groves (1969), the mountain anoa can be told apart from the other species by being smaller, having a round horn cross-section, thick and woolly hair, and sometimes having white markings on the face and legs. They are similar in appearance to miniature water buffalo. Both anoa species are found on the island of Sulawesi and the nearby island of Buton in Indonesia and live in undisturbed rainforest areas. They live singly or in pairs, rather than in herds like most cattle, except when the cows are about to give birth. Little is known about their life history as well. However, in captive individuals, they have a life expectancy of 20–30 years. Anoa take two to three years before they reach sexual maturity have one calf a year and have very rarely been seen to have more.


Conservation

Both species of anoa have been classified as endangered since the 1960s and the populations continue to decrease. Fewer than 5,000 animals of each species likely remain. Reasons for their decline include hunting for hides, horns, and meat by the local peoples and loss of habitat due to the advancement of settlement. Currently, hunting is the more serious factor in most areas. The leading cause of their population decline is hunting by local villagers for meat, with
habitat loss Habitat destruction (also termed habitat loss or habitat reduction) occurs when a natural habitat is no longer able to support its native species. The organisms once living there have either moved elsewhere, or are dead, leading to a decrease ...
also being significant. One benefit of the lack of knowledge about the legal status of what they are doing is that villagers are open to communication with researchers on their harvests and hunting practices; where awareness of conservation issues has penetrated, villagers will lie about their activities. Logging is a large issue because both species prefer core forested habitats that are far away from humans and the influences that come with them. By logging, humans create much more fragmented habitats and, therefore, a decrease in the area where the anoa can breed and live. This
habitat fragmentation Habitat fragmentation describes the emergence of discontinuities (fragmentation) in an organism's preferred environment (habitat), causing population fragmentation and ecosystem decay. Causes of habitat fragmentation include geological proces ...
also alters the natural mixing of populations of the anoa. This may lead to a loss in genetic diversity between the two species and, over time, could also lead to their decline.


References

{{Authority control Bubalus Mammals of Sulawesi Endemic fauna of Indonesia Mammals described in 1910