Tamaraw

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Tamaraw
Bubalus mindorensis by Gregg Yan 01.jpg
In the Mounts Iglit-Baco National Park, Philippines
CITES Appendix I (CITES) [2]
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Family: Bovidae
Subfamily: Bovinae
Genus: Bubalus
Species:
B. mindorensis
Binomial name
Bubalus mindorensis
(Heude, 1888)
Tamaraw distribution map.svg
Range map in green

The tamaraw or Mindoro dwarf buffalo (Bubalus mindorensis) is a small buffalo belonging to the family Bovidae. [3] It is endemic to the island of Mindoro in the Philippines, and is the only endemic Philippine bovine. It is believed, however, to have once also thrived on the larger island of Luzon. The tamaraw was originally found all over Mindoro, from sea level up to the mountains (2000 m above sea level), but because of human habitation, hunting, and logging, it is now restricted to only a few remote grassy plains and is now a critically endangered species. [1]

Contents

Tamaraw (Inside Philippine National Museum of Natural History) Tamaraw (Inside Philippine National Museum of Natural History).jpg
Tamaraw (Inside Philippine National Museum of Natural History)

Contrary to common belief and past classification, the tamaraw is not a subspecies of the water buffalo, nor is it a subspecies of the slightly larger carabao, which is classified as a subspecies of the water buffalo. In contrast to the carabao, the tamaraw has a number of distinguishing characteristics; it is slightly hairier, has light markings on its face, is not gregarious, and has shorter horns that are somewhat V-shaped. [4] It is the second-largest native terrestrial mammal in the country, next only to the carabao.

Evolutionary history

The presence of B. mindorensis on the island of Mindoro, coupled with the discovery of fossil bubalids in other islands around the archipelago, indicates that the family was once widespread throughout the Philippines. [5] [6] In fact, fossil finds in the 20th century have shown that B. mindorensis was once found on the northern Philippine island of Luzon during the Pleistocene. [7]

As a member of the family Bovidae, the tamaraw's close affinity to the water buffalo (B. bubalis) has been validated many times in the past. It was once considered a subspecies of B. bubalis (as Anoa bubalis), Anoa bubalis mindorensis. [8] Recent genetic analysis studies of the family members further strengthen this view. [9]

Etymology and taxonomic history

The tamaraw was originally described as Anoa mindorensis by French zoologist Pierre Marie Heude in 1888. In 1958, it was described as Anoa bubalis mindorensis, a subspecies of the then-water buffalo species (Anoa bubalis). [8] A little over a decade after, the tamaraw was elevated to species status as Anoa mindorensis in 1969. [10]

Later research and analyses of relationships determined the genus Anoa to be a part of the genus Bubalus. The tamaraw's scientific name was updated into its present form, Bubalus mindorensis (sometimes referred to as Bubalus (Bubalus) mindorensis). [11]

The name tamaraw has other variants, such as tamarau, tamarou, and tamarao. The term tamaraw may have come from tamadaw, which is a probable alternative name for the banteng (Bos javanicus). [12]

Anatomy and morphology

B. mindorensis has the appearance of a typical member of its family. It has a compact, heavyset, bovine body, four legs that end in cloven hooves, and a small, horned head at the end of a short neck. It is smaller and stockier compared to the water buffalo (B. bubalis). Little sexual dimorphism is seen in the species, although males are reported to have thicker necks. [13] The tamaraw has a typical shoulder height of 100–105 cm (39–41 in). The length of the body is 2.2 m (7.2 ft), while the tail adds a further 60 cm (24 in). Reported weights have ranged from 180 to 300 kg (400 to 660 lb). [14]

Adults have a dark brown to grayish color and more hair than B. bubalis. The limbs are short and stocky. White markings are seen in the hooves and the inner lower fore legs. These markings are similar to those of the anoa (B. depressicornis). The face is the same color as the body. Most of the members of the species also have a pair of gray-white strips that begins from the inner corner of the eye to the horns. The nose and lips have black skin. The ears are 13.5 cm (5.3 in) long from notch to tip with white markings on the insides. [15]

Both sexes grows short, black horns in a V-shaped manner compared to C-shaped horns of B. bubalis. The horns have flat surfaces and are triangular at their base. Due to the regular rubbing, the tamaraw's horns have a worn outer surface, but with rough inner sides. The horns are reported to be 35.5 to 51.0 cm (14.0 to 20.1 in) long. [15]

Taxidermied tamaraw in Philippine National Museum of Natural History Preserved Tamaraw in Philippine National Museum.jpg
Taxidermied tamaraw in Philippine National Museum of Natural History

Distribution

The tamaraw was first documented in 1888 on the island of Mindoro. Before 1900, most people avoided settling on Mindoro due to a virulent strain of malaria. [16] However, as antimalarial medicine was developed, more people settled on the island. The increase in human activity has drastically reduced tamaraw population. By 1966, the tamaraw's range was reduced to three areas: Mount Iglit, Mount Calavite, and areas near the Sablayan Penal Settlement. By 2000, their range was further reduced to only two areas: the Mounts Iglit–Baco National Park and Aruyan. [16]

Initial estimates of the B. mindorensis population on Mindoro was placed at around 10,000 individuals in the early 1900s. Less than 50 years later in 1949, the population had dwindled to around 1000 individuals. By 1953, fewer than 250 animals were estimated to be alive. [17] These population estimates continually grew smaller until the International Union for Conservation of Nature publication of their 1969 Red Data Book, where the tamaraw population was noted to be an alarmingly low 100 head. [18] This head count rose to 120 animals in 1975. [19] Current estimates place the wild tamaraw population from 30 to 200 individuals. [1]

Ecology and life history

Close-up of a tamaraw Bubalus mindorensis by Gregg Yan 02.jpg
Close-up of a tamaraw

As a rare, endemic mammal on a relatively secluded island, the ecology of the tamaraw is largely unknown. Individuals of the species are reclusive and shy away from humans. In addition, the small sizes of the species' subpopulations, already spread thin throughout their fragmented range (in 1986, about 51 individuals were found in a 20-km2 area[ citation needed ]), make contact with any more than a solitary individual a rarity. [20]

Habitat

B. mindorensis prefers tropical highland forested areas. It is typically found in thick brush, near open-canopied glades, where it may feed on grasses. Since human habitation and subsequent forest fragmentation of their home island of Mindoro, the habitat preferences of the tamaraw have somewhat expanded to lower-altitude grassy plains. Within their mountainous environment, tamaraws will usually be found not far from sources of water. [1] [16]

Trophic ecology

The tamaraw is a grazer that feeds on grasses and young bamboo shoots, although it is known to prefer cogon grass and wild sugarcane ( Saccharum spontaneum ). They are naturally diurnal, feeding during the daytime hours; however, daytime human activities have recently forced select B. mindorensis individuals to be nocturnal to avoid human contact. [4]

Life history

The tamaraw is known to live for about 20 years, with an estimated lifespan of about 25. The adult female tamaraw gives birth to one offspring after a gestation period around 300 days. [21] There is an interbirth interval of two years, although one female has been sighted with three juveniles. The calf stays for 2–4 years with its mother before becoming independent. [4]

Behavioral ecology

A small family group Bubalus mindorensis by Gregg Yan 03.jpg
A small family group

Unlike the closely related water buffalo, B. mindorensis is a solitary creature. Adults of the species do not occur in herds or smaller packs, and are often encountered alone. Only juveniles exhibit the typical bovine herding behavior and clan hierarchy often seen in water buffalo. [22] Males and females are known to associate all year round, but this interaction lasts only a few hours. This solitary behavior may be an adaptation to its forest environment. [4] Adult males are often solitary and apparently aggressive, while adult females can be alone, accompanied by a bull, or their young of different ages. [20]

Similar to other bovines the tamaraw wallows in mud pits, maybe to avoid biting insects. [23]

Reports of aggression when cornered are unsubstantiated. Tamaraw Threat posture involves lowering the head, and shifting its horns into a vertical position, accompanied by head shaking. [15]

Conservation

An illustration of a tamaraw Mindorensis.jpg
An illustration of a tamaraw

Being an entirely endemic and rare land mammal, B. mindorensis stands as an extremely vulnerable species. Currently, it is classified as a critically endangered species and has been so since 2000 by the IUCN on its IUCN Red List of endangered species. Awareness of the conservation status of B. mindorensis began in 1965, when it was classified as status inadequately known by the IUCN. Enough data were gathered on the tamaraw population by 1986, [24] and the IUCN conservation monitoring center declared the species endangered. Throughout succeeding surveys conducted in 1988, [25] 1990, [26] 1994 [27] and 1996, the species remained listed on the Red List as endangered. The relisting of the species in 1996 fulfilled the IUCN criteria B1+2c and D1. Criterion B1 indicated that the species' range was less than 500 km2, and is known to exist in less than five independent locations. A noticed continuing decline in the population fulfilled sub-criterion 2c, given the condition of the population's sole habitat. Criterion D1 essentially required that a population be composed of less than 250 mature individuals; individual counts of the B. mindorensis population at the time figured significantly lower than this. [28] In 2000, the tamaraw was relisted on the Red List under the more severe C1 criteria. This was due to estimates that the population would decline by 20% in five years or within the timespan of two generations. [1] [29]

Many factors have contributed to the decline of the tamaraw population. Over the course of the century, the increase of the human population on Mindoro has exposed the island's sole tamaraw population to severe anthropogenic pressures. In the 1930s, the introduction of non-native cattle on the island caused a severe rinderpest epidemic among the tamaraw population then numbering in the thousands. Hunting of tamaraws for food and sustenance has also taken a toll on the species' numbers. The most major factor threatening survival of B. mindorensis is habitat loss due to infrastructure development, logging, and agriculture. These factors reduced the population of thousands during the early 1900s to less than 300 individuals in 2007. [1] [4]

Due to the decline of the B. mindorensis population, various Philippine laws and organizations have been created towards the conservation of the species. In 1936, Commonwealth Act No. 73 was enacted by the then-Philippine Commonwealth. The act specifically prohibited killing, hunting, and even merely wounding tamaraws, with an exception noted for self-defense (if one were to be attacked by an agitated individual) or for scientific purposes. The penalties were harsh enough to include a hefty fine and imprisonment. [30]

In 1979, an executive order was signed creating a committee specifically geared towards the conservation of the tamaraw; it was referred to as a "source of national pride" in the said order. [31] The Tamaraw Conservation Project was also established in 1979. The organization has successfully bred a tamaraw, nicknamed "Kali", in captivity in 1999. [4] In 2001, Republic Act 9147, or the Wildlife Resources Conservation and Protection Act was enacted to protect the tamaraw and other endemic species from hunting and sale. [32] During the 1970s, a gene pool was established to preserve the tamaraw's numbers. However, the project was not successful, as only one offspring, named "Kali", was produced. As of 2011, Kali is the only surviving animal in the gene pooling project. The project was also not improved as the Protected Areas and Wildlife Bureau showed that the tamaraws were already breeding in the wild. Cloning was not implemented for conservation as the Department of Environment and Natural Resource argued that such measures would diminish the genetic diversity of the species. [33]

A small subpopulation of tamaraws has been found within the confines of the Mt. Iglit Game Refuge and Bird Sanctuary on Mindoro. [22]

As of May 2007, B. mindorensis is on Appendix I of the Convention on International Trade in Endangered Species, where it has been since the species was first put on the list on January 7, 1975. With the listing, CITES recognizes the species as critically endangered and threatened with extinction. Thus, international commercial trade in the species or any derivatives of which, such as meat or horns, is considered illegal. While commercial trade in the species is prohibited, exchange for noncommercial reasons, such as scientific research, is allowed. [34] [35]

The 2002 Presidential Proclamation 273 set October as a "Special Month for the Conservation and Protection of the Tamaraw in Mindoro.". [36] [37]

As of April 2019, according to June Pineda, Tamaraw Conservation Program coordinator of the Department of Environment and Natural Resources, the latest count at Mounts Iglit-Baco National Park in Occidental Mindoro showed 466 to 494 tamaraws, lower than 2018’s 523 animals. [38]

Importance to humans

Economical and commercial value

While not as heavily exploited as other large, endangered mammals, the tamaraw population was subject to some harvesting pressure from subsistence hunters before conservation efforts were spurred towards the latter half of the 20th century. The IUCN has described this as still going on in their 2006 Red List report. [1]

In Philippine culture

The tamaraw on a 1-peso coin of Flora and Fauna Series. Philbullpisolgrev.jpg
The tamaraw on a 1-peso coin of Flora and Fauna Series.

Though the national animal of the Philippines is the carabao, [39] the tamaraw is also considered a national symbol of the Philippines. An image of the animal is featured on a Flora and Fauna Series 1 peso coin released from 1983 to 1994. [40]

In 2004, Proclamation No. 692 was enacted to make October 1 a special working holiday in the province of Occidental Mindoro. In line with the Tamaraw Conservation Month, the proclamation aimed to remind the people of Mindoro the importance of the conservation of the tamaraw and its environment. [41]

During the wake of the Asian utility popularity in the 1990s, Toyota Motors Philippines released the Toyota Kijang as the Tamaraw FX, an evolution of the Tamaraw AUV. It was widely patronized by taxi operators, and was immediately turned into a staple mode of transportation much like a cross of the taxi and the jeepney. The FX later saw a new generation model known locally as the Revo [42] The tamaraw is also the mascot of the varsity teams of the Far Eastern University (FEU Tamaraws) in the University Athletic Association of the Philippines, and of the Toyota Tamaraws of the Philippine Basketball Association. [43] The Tamaraw Falls in Barangay Villaflor, Puerto Galera, were also named after the bovine. [44]

Related Research Articles

<span class="mw-page-title-main">Anoa</span> Dwarf buffalo from Sulawesi

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 and the lowland anoa. Both live in undisturbed rainforests and are similar in appearance to miniature water buffaloes, weighing 150–300 kg (330–660 lb).

<span class="mw-page-title-main">Water buffalo</span> Species of large bovid

The water buffalo, also called domestic water buffalo and Asian water buffalo, is a large bovid originating in the Indian subcontinent and Southeast Asia. Today, it is also kept in Italy, the Balkans, Australia, North America, South America and some African countries. Two extant types of water buffalo are recognized, based on morphological and behavioural criteria: the river buffalo of the Indian subcontinent and further west to the Balkans, Egypt and Italy and the swamp buffalo, found from Assam in the west through Southeast Asia to the Yangtze Valley of China in the east.

<span class="mw-page-title-main">Bovinae</span> Subfamily of mammals

Bovines comprise a diverse group of 10 genera of medium to large-sized ungulates, including cattle, bison, African buffalo, water buffalos, and the four-horned and spiral-horned antelopes. The evolutionary relationship between the members of the group is still debated, and their classification into loose tribes rather than formal subgroups reflects this uncertainty. General characteristics include cloven hooves and usually at least one of the sexes of a species having true horns. The largest extant bovine is the gaur.

<i>Bubalus</i> Genus of bovines

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.

<span class="mw-page-title-main">Mindoro</span> Island in the Philippines

Mindoro is the seventh largest and eighth-most populous island in the Philippines. With a total land area of 10,571 km2, it has a population of 1,408,454, as of the 2020 census. It is located off the southwestern coast of Luzon and northeast of Palawan. Mindoro is divided into two provinces: Occidental Mindoro and Oriental Mindoro. Calapan is the only city in the island while San Jose is the largest settlement on the island with a total population of 143,430 inhabitants as of 2015. The southern coast of Mindoro forms the northeastern extremum of the Sulu Sea. Mount Halcon is the highest point on the island, standing at 8,484 feet (2,586 m) above sea level located in Oriental Mindoro. Mount Baco is the island's second highest mountain with an elevation of 8,163 feet (2,488 m), located in the province of Occidental Mindoro.

<span class="mw-page-title-main">Philippine crocodile</span> Species of crocodile

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The Cebu tamaraw is a fossil dwarf buffalo discovered in the Philippines, and first described in 2006.

<span class="mw-page-title-main">Large Mindoro forest mouse</span> Species of rodent

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<span class="mw-page-title-main">Mindoro hornbill</span> Species of bird

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<span class="mw-page-title-main">Wild water buffalo</span> Species of mammal

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The Mindoro stripe-faced fruit bat, nicknamed the "flying fox" for its foxlike face, is a species of large megabat that is endemic to the island of Mindoro. The Mindoro stripe-faced fruit bat ranked sixth in the top ten species of 2008, selected by the International Institute for Species Exploration.

<span class="mw-page-title-main">FEU–D Baby Tamaraws</span> Varsity team

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<span class="mw-page-title-main">Bovini</span> Tribe of cattle

The tribe Bovini or wild cattle are medium to massive bovines that are native to Eurasia, North America, and Africa. These include the enigmatic, antelope-like saola, the African and Asiatic buffalos, and a clade that consists of bison and the wild cattle of the genus Bos. Not only are they the largest members of the subfamily Bovinae, they are the largest species of their family Bovidae. The largest species is the gaur, weighing up to 1,500 kg (3,300 lb).

<span class="mw-page-title-main">Mounts Iglit–Baco Natural Park</span> Nature reserve in Mindoro island, Philippines

The Mounts Iglit–Baco Natural Park (MIBNP) is a legislated protected area of the Philippines and an ASEAN Heritage Park located in the island of Mindoro in the central Philippines. It was first established in 1970 by virtue of Republic Act No. 6148 as a national park that covered an area of 75,445 hectares surrounding Mount Iglit and Mount Baco in the interior of Mindoro. The park is the home of the largest remaining population of the critically endangered tamaraw. In 2003, the Association of Southeast Asian Nations listed it as one of its four heritage parks in the Philippines. The park has also been nominated to the Tentative List of UNESCO World Heritage Sites in 2006. In 2018, the park was designated as a "Natural Park" under the Republic Act No. 11038 or the Expanded National Integrated Protected Areas Systems (ENIPAS) Act of 2018, which increased the area to 106,656 hectares.

<span class="mw-page-title-main">Mountain anoa</span> Species of dwarf buffalo

The mountain anoa(Bubalus quarlesi) also known as Quarle's anoa, is a species of buffalo endemic to Sulawesi. Its closest relative is the lowland 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 buffalo, and both are classified in the genus Bubalus.

<span class="mw-page-title-main">Mindoro boobook</span> Species of owl

The Mindoro boobook or Mindoro hawk-owl is a species of owl in the family Strigidae that is endemic to the Philippines.

<span class="mw-page-title-main">Lowland anoa</span> Species of dwarf buffalo

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 buffalo, and both are classified in the genus Bubalus.

<span class="mw-page-title-main">Bubalina</span> Subtribe of bovines consisting of the true buffalo

Bubalina is a subtribe of wild cattle that includes the various species of true buffalo. Species include the African buffalo, the anoas, and the wild water buffalo. Buffaloes can be found naturally in sub-Saharan Africa, South Asia and Southeast Asia, and domestic and feral populations have been introduced to Europe, the Americas, and Australia. In addition to the living species, bubalinans have an extensive fossil record where remains have been found in much of Afro-Eurasia.

<span class="mw-page-title-main">Mindoro rain forests</span> Ecoregion in Mindoro, the Philippines

The Mindoro rain forests ecoregion covers the island of Mindoro, which lies between the island of Luzon and the Palawan Archipelago in the Philippines. The island has been subject to heavy commercial logging, with the only original forests remaining on the high ridge of the central mountain range. Logging has been reduced long enough on the east side of the mountains to support a regrown forest and a number of endemic species.

References

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  20. 1 2 Nowak, Ronald M. (1999). Walker's Mammals of the World. JHU Press. p. 1149. ISBN   0-8018-5789-9.
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  30. ↑ "An act to prohibiting the killing, hunting, wounding or taking away of Bubalus mindorensis, commonly known as tamaraw". Commonwealth Act No. 73. National Assembly of the Philippines. October 23, 1936. Retrieved March 18, 2007.
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  32. ↑ "Republic Act No. 9147" . Retrieved March 5, 2007.
  33. ↑ "Philippines : Endangered Tamaraws breed in the wilds again". Archived from the original on March 18, 2012. Retrieved March 8, 2007.
  34. ↑ CITES (May 3, 2007). "Appendices". Convention on International Trade in Endangered Species of Wild Flora and Fauna. Archived from the original (shtml) on July 9, 2007. Retrieved August 3, 2007.
  35. ↑ UNEP-WCMC. "Bubalus mindorensis". UNEP-WCMC Species Database: CITES-Listed Species. United Nations Environment Programme - World Conservation Monitoring Centre. A-119.009.004.003. Archived from the original on September 30, 2007. Retrieved August 3, 2007.
  36. ↑ "Tamaraws no longer on brink of extinction, say conservationists". GMANews Online. October 3, 2008. Retrieved October 4, 2012.
  37. ↑ goodnewspilipinas.com (October 11, 2008). "Saving the Tamaraws from extinction". Inquirer.net. Archived from the original on July 12, 2014. Retrieved October 4, 2012.
  38. ↑ Virola, Madonna (May 9, 2019). "Habitat loss, poaching blamed for decline in tamaraw population". Inquirer.net. Retrieved October 19, 2019.
  39. ↑ "Philippines Independence Day Celebrations". National Symbol. 123independenceday.com. Retrieved March 29, 2007.
  40. ↑ Breithaupt, Jan (April 29, 2003). "Bubalus mindorensis, Philippines". EcoPort Picture Databank. EcoPort. Retrieved March 29, 2007.
  41. ↑ "Proclamation No. 692" (Press release). Government of the Republic of the Philippines. August 13, 2004. Archived from the original on August 3, 2007. Retrieved July 28, 2007.
  42. ↑ "Overall Chronological Table: 1971-1980". 75 Years of Toyota. Toyota Motor Corporation. Retrieved January 18, 2014.
  43. ↑ "FEU Diliman". feudiliman.edu.ph. Retrieved March 1, 2022.
  44. ↑ "10 awesome Boracay alternatives". April 4, 2018.

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