The Visayan spotted deer (''Rusa alfredi''), also known as the Visayan deer, the Philippine spotted deer
or
Prince Alfred's deer, is a
nocturnal
Nocturnality is an animal behavior characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal", versus diurnal meaning the opposite.
Nocturnal creatures generally have highly developed sens ...
and
endangered species
An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and inv ...
of
deer
Deer or true deer are hoofed ruminant mammals forming the family Cervidae. The two main groups of deer are the Cervinae, including the muntjac, the elk (wapiti), the red deer, and the fallow deer; and the Capreolinae, including the reindeer ...
located primarily in the
rainforest
Rainforests are characterized by a closed and continuous tree canopy, moisture-dependent vegetation, the presence of epiphytes and lianas and the absence of wildfire. Rainforest can be classified as tropical rainforest or temperate rainfores ...
s of the
Visayan
Visayans ( Visayan: ''mga Bisaya''; ) or Visayan people are a Philippine ethnolinguistic group or metaethnicity native to the Visayas, the southernmost islands of Luzon and a significant portion of Mindanao. When taken as a single ethnic group ...
islands of
Panay
Panay is the sixth-largest and fourth-most populous island in the Philippines, with a total land area of and has a total population of 4,542,926 as of 2020 census. Panay comprises 4.4 percent of the entire population of the country. The City o ...
and
Negros
Negros is the fourth largest and third most populous island in the Philippines, with a total land area of . Negros is one of the many islands of the Visayas, in the central part of the country. The predominant inhabitants of the island region a ...
though it once roamed other islands such as
Cebu
Cebu (; ceb, Sugbo), officially the Province of Cebu ( ceb, Lalawigan sa Sugbo; tl, Lalawigan ng Cebu; hil, Kapuroan sang Sugbo), is a province of the Philippines located in the Central Visayas region, and consists of a main island and 167 ...
,
Guimaras
Guimaras , officially the Province of Guimaras ( hil, Kapuoran sang Guimaras; tl, Lalawigan ng Guimaras), is an island province in the Philippines located in the Western Visayas region. Its capital is Jordan while its largest local government ...
,
Leyte
Leyte ( ) is an island in the Visayas group of islands in the Philippines. It is eighth-largest and sixth-most populous island in the Philippines, with a total population of 2,626,970 as of 2020 census.
Since the accessibility of land has be ...
,
Masbate
Masbate, officially the Province of Masbate ( Masbateño: ''Probinsya san Masbate''; tl, Lalawigan ng Masbate), is an island province in the Philippines located near the midsection of the nation's archipelago. Its provincial capital is Masbate C ...
, and
Samar
Samar ( ) is the third-largest and seventh-most populous island in the Philippines, with a total population of 1,909,537 as of the 2020 census. It is located in the eastern Visayas, which are in the central Philippines. The island is divided in ...
. It is one of three
endemic
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...
deer species in the
Philippines
The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no),
* bik, Republika kan Filipinas
* ceb, Republika sa Pilipinas
* cbk, República de Filipinas
* hil, Republ ...
, although it was not recognized as a separate
species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
until 1983. An estimated 2,500 mature individuals survived worldwide as of 1996, according to the
IUCN
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natu ...
, although it is uncertain of how many of them still survive in the wild. The diet of the deer, which consists of a variety of different types of grasses, leaves, and buds within the forest, is the primary indicator of its habitat. Since 1991 the range of the species has severely decreased and is now almost co-extensive with that of the
Visayan warty pig
The Visayan warty pig (''Sus cebifrons'') is a critically endangered species in the pig genus ('' Sus''). It is endemic to six of the Visayan Islands (Cebu, Negros, Panay, Masbate, Guimaras, and Siquijor) in the central Philippines. It is know ...
.
In April 2009 an expedition team of
British
British may refer to:
Peoples, culture, and language
* British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies.
** Britishness, the British identity and common culture
* British English, ...
and
Filipino
Filipino may refer to:
* Something from or related to the Philippines
** Filipino language, standardized variety of 'Tagalog', the national language and one of the official languages of the Philippines.
** Filipinos, people who are citizens of th ...
mountaineers and scientists discovered evidence of two separate groups of deer in the North Negros Natural Park. These signs (scat and feeding sites) are believed to be the first scientific evidence of the deer's activity for over 25 years. It is estimated that an estimated 300 animals survive on the island of
Negros
Negros is the fourth largest and third most populous island in the Philippines, with a total land area of . Negros is one of the many islands of the Visayas, in the central part of the country. The predominant inhabitants of the island region a ...
. Conservation efforts are currently underway with the intention of preserving the remaining population of the species but are poorly funded and supported.
In 2012, the Negros Interior Biodiversity Expedition used
camera trap
A camera trap is a camera that is automatically triggered by a change in some activity in its vicinity, like presence of an animal or a human being. It is typically equipped with a motion sensor – usually a passive infrared (PIR) sensor ...
s in the centre of the North Negros Natural Park to take the first photos of the species in the wild.
Description
![Cervus alfredi5](https://upload.wikimedia.org/wikipedia/commons/2/23/Cervus_alfredi5.jpg)
The deer is small and short-legged yet it is the largest
endemic
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...
species of deer among the Visayas. Adults range from long from the head to the base of the tail, in shoulder height and in weight. This species is easily distinguished from other species of deer in the Philippines by the distinctive "A" pattern of beige spots which dot its deep brown back and sides. Other distinctive features include cream underparts and white fur on the chin and lower lip. The animal's head and neck are brown, but lighter than the body, and the eyes are ringed with paler fur. Males are larger than females and have short, thick, bumpy
antlers
Antlers are extensions of an animal's skull found in members of the Cervidae (deer) family. Antlers are a single structure composed of bone, cartilage, fibrous tissue, skin, nerves, and blood vessels. They are generally found only on male ...
.
Behavior and ecology
Habitat
The species' range once covered the shoreline up to at least 2,000 m above sea level. Its habitat is in dense
cogon
''Imperata cylindrica'' (commonly known as cogongrass or kunai grass ) is a species of perennial rhizomatous grass native to tropical and subtropical Asia, Micronesia, Melanesia, Australia, Africa, and southern Europe. It has also been introduce ...
grassland, and primary and secondary forest. Most of its habitat consists of areas where its diet of young shoots of cogon grass and young low-growing leaves and buds are plentiful. Besides areas that are dense in vegetation, it could also thrive in places it could
graze. They may also visit burnt-out forest clearings for the floral
ash
Ash or ashes are the solid remnants of fires. Specifically, ''ash'' refers to all non-aqueous, non- gaseous residues that remain after something burns. In analytical chemistry, to analyse the mineral and metal content of chemical samples, ash ...
. Due to the now restricted range of the deer, it is impossible to ascertain the preferred habitat of the species.
Breeding
The deer breed from November to December, although mating could begin earlier. Males have a roaring call to attract females. Reports mostly mention a single calf with a mated pair, although conclusive evidence on the number of young is not available because of the rarity of sightings. Calves are born after a
gestation
Gestation is the period of development during the carrying of an embryo, and later fetus, inside viviparous animals (the embryo develops within the parent). It is typical for mammals, but also occurs for some non-mammals. Mammals during pregna ...
period of around 240 days. Weaning takes place at six months and the calves are mature from 12 months.
Conservation
This species is fully protected under Philippine law. Hunting and forest clearances as a result of logging activities and agricultural conversion are thought to be the causes of a devastating drop in the numbers of the deer (a 1991 survey found that the deer was present in only 5% of its former range). Despite this, the deer still exist in the more remote areas, specifically in the protected habitats of
Mt. Canlaon National Park, North Negros Forest Reserve, Southern Candoni, and West
Panay
Panay is the sixth-largest and fourth-most populous island in the Philippines, with a total land area of and has a total population of 4,542,926 as of 2020 census. Panay comprises 4.4 percent of the entire population of the country. The City o ...
Mountains (a proposed National Park). In 1990, the Philippine Spotted Deer Conservation Program was set up to facilitate the conservation of the species. Some of the deer have been held in captivity in Mari-it Conservation Centre in Panay, two breeding centers in Negros, and in a number of European zoos.
Since 1987,
Silliman University
Silliman University (also referred to as Silliman or SU) is a private university, private Research institute, research university in Dumaguete City, Negros Oriental, the Philippines. Established in 1901 as Silliman Institute by the Presbyte ...
Mammal Conservation Program, through the Center for Tropical Studies (CENTROP), has been engaged in the deer's captive breeding. The success of the program has led some of the captive-bred to be released in the interior forests of southern Negros, particularly in the interior of
Basay,
Negros Oriental
Negros Oriental ( ceb, Sidlakang Negros; tl, Silangang Negros), officially the Province of Negros Oriental, is a province in the Philippines located in the Central Visayas region. Its capital is the city of Dumaguete. It occupies the southeaste ...
.
Threats
Deforestation has greatly contributed in the decline of the deer.
Hunting
Hunting is the human activity, human practice of seeking, pursuing, capturing, or killing wildlife or feral animals. The most common reasons for humans to hunt are to harvest food (i.e. meat) and useful animal products (fur/hide (skin), hide, ...
, both by locals and sport hunters has also made an impact; subsistence hunting, sales of venison to local markets and speciality restaurants, and live trapping for the pet trade have all contributed to the species' dwindling numbers. Isolation and reduction of population is likely to have led to some herds becoming moribund. While cross-breeding with ''R. mariannus'' has been observed in captivity, the lack of a common range means this is unlikely to be a problem in the wild.
Due to the severe pressures faced by the deer, the
IUCN
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natu ...
has twice listed it as an
endangered species
An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and inv ...
: firstly in 1994 (when it was de-listed within the year) and again in 1996 (which listing has continued until the present). The limited numbers of the animal in the wild (at least 300, down from almost 1,600) has led to the belief that prospects for its survival are bleak.
Rediscovery
On April 2009,
footprints
Footprints are the impressions or images left behind by a person walking or running. Hoofprints and pawprints are those left by animals with hoof, hooves or paws rather than foot, feet, while "shoeprints" is the specific term for prints made by ...
and
animal droppings belonging to the creature were found in the North
Negros
Negros is the fourth largest and third most populous island in the Philippines, with a total land area of . Negros is one of the many islands of the Visayas, in the central part of the country. The predominant inhabitants of the island region a ...
Natural Park by a scientific team of six
British
British may refer to:
Peoples, culture, and language
* British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies.
** Britishness, the British identity and common culture
* British English, ...
, five
Filipinos
Filipinos ( tl, Mga Pilipino) are the people who are citizens of or native to the Philippines. The majority of Filipinos today come from various Austronesian ethnolinguistic groups, all typically speaking either Filipino, English and/or othe ...
, and one
Irishman
The Irish ( ga, Muintir na hÉireann or ''Na hÉireannaigh'') are an ethnic group and nation native to the island of Ireland, who share a common history and culture. There have been humans in Ireland for about 33,000 years, and it has been c ...
, who were studying the
biodiversity
Biodiversity or biological diversity is the variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic (''genetic variability''), species (''species diversity''), and ecosystem (''ecosystem diversity'') l ...
of the park. The team, who were from Negros Interior Biodiversity Expedition, estimate that less 300 members of the species survive. The team discovered a set of footprints beside a river three days into the expedition. The distance between these footprints and a half-eaten set of young
palm trees
Palm most commonly refers to:
* Palm of the hand, the central region of the front of the hand
* Palm plants, of family Arecaceae
**List of Arecaceae genera
* Several other plants known as "palm"
Palm or Palms may also refer to:
Music
* Palm ( ...
, which were found three days later, indicated that two groups of deer might be present in the nature preserve. Subsequently, the team found small piles of 20 to 30 pellets with a trail of deer footprints leading away. Because "other species such as the
Visayan warty pig
The Visayan warty pig (''Sus cebifrons'') is a critically endangered species in the pig genus ('' Sus''). It is endemic to six of the Visayan Islands (Cebu, Negros, Panay, Masbate, Guimaras, and Siquijor) in the central Philippines. It is know ...
s and
civet cats have distinctly different scat", the team were confident that the pellets belonged to the deer. This was the first evidence of a live wild population of the deer for more than ten years. The team was thrilled by their success, although one of the expedition leaders, Craig Turner, admitted "this discovery confirms
he deerare surviving, but doesn't tell us they are thriving". Besides the deer, other species discovered were some unusual plants, including ground
orchids
Orchids are plants that belong to the family Orchidaceae (), a diverse and widespread group of flowering plants with blooms that are often colourful and fragrant.
Along with the Asteraceae, they are one of the two largest families of flowering ...
and
pitcher plant
Pitcher plants are several different carnivorous plants which have modified leaves known as pitfall traps—a prey-trapping mechanism featuring a deep cavity filled with digestive liquid. The traps of what are considered to be "true" pitcher p ...
s, and many bird and
frog
A frog is any member of a diverse and largely Carnivore, carnivorous group of short-bodied, tailless amphibians composing the order (biology), order Anura (ανοὐρά, literally ''without tail'' in Ancient Greek). The oldest fossil "proto-f ...
species. Specimens were sent to the cities of
Bacolod
Bacolod, officially the City of Bacolod (; hil, Dakbanwa/Syudad sang Bacolod; fil, Lungsod ng Bacolod), is a 1st class highly urbanized city in the region of Western Visayas, Philippines. It is the capital of the province of Negros Occidenta ...
and
Dumaguete
Dumaguete, officially the City of Dumaguete ( ceb, Dakbayan sa Dumaguete; fil, Lungsod ng Dumaguete), is a 3rd income class component city and the capital of the province of Negros Oriental, Philippines. According to the 2020 census, it has a p ...
for further analysis.
The animal was later featured in a front-page story in the ''
Philippine Daily Inquirer
The ''Philippine Daily Inquirer'' (''PDI''), or simply the ''Inquirer'', is an English-language newspaper in the Philippines. Founded in 1985, it is often regarded as the Philippines' newspaper of record. The newspaper is the most awarded bro ...
'' on 24 May 2009 in the story "The World's Rarest Deer Still Roam Negros". In the story, the British Ambassador declared the find "an exciting discovery". The expedition team is reportedly set to present their findings to the
Royal Geographical Society
The Royal Geographical Society (with the Institute of British Geographers), often shortened to RGS, is a learned society and professional body for geography based in the United Kingdom. Founded in 1830 for the advancement of geographical scien ...
.
Researchers involved in the expedition commented that "more protection" of the deer and similar endangered species in the park
s needed"in order to assure their survival". They also said in the statement that "Philippine forests still harbor many rare and unique species, found nowhere else in the world".
The expedition was sponsored by several environmental institutions and foundations, which are interested in promoting and protecting the
biodiversity
Biodiversity or biological diversity is the variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic (''genetic variability''), species (''species diversity''), and ecosystem (''ecosystem diversity'') l ...
, present within the
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and North ...
as well as in the
Visayas
The Visayas ( ), or the Visayan Islands (Bisayan languages, Visayan: ''Kabisay-an'', ; tl, Kabisayaan ), are one of the three Island groups of the Philippines, principal geographical divisions of the Philippines, along with Luzon and Mindanao ...
in the
Philippines
The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no),
* bik, Republika kan Filipinas
* ceb, Republika sa Pilipinas
* cbk, República de Filipinas
* hil, Republ ...
, such as the Negros Forests and Ecological Foundation Inc.,
Silliman University
Silliman University (also referred to as Silliman or SU) is a private university, private Research institute, research university in Dumaguete City, Negros Oriental, the Philippines. Established in 1901 as Silliman Institute by the Presbyte ...
,
Coral Cay Conservation, and the
Zoological Society of London
The Zoological Society of London (ZSL) is a charity devoted to the worldwide conservation of animals and their habitats. It was founded in 1826. Since 1828, it has maintained the London Zoo, and since 1931 Whipsnade Park.
History
On 29 ...
. In 2013, there were reports of sightings in the Southern Candoni region, indicating Silliman's releases in Basay have successfully expanded north.
See also
*
Philippine brown deer (''C. mariannus'')
*
Calamian hog deer (''Axis calamianensis'')
References
External links
*
*Chester Zoo
you can visit this animal at Chester Zoo
{{Taxonbar, from=Q645732
Visayan spotted deer
The Visayan spotted deer (''Rusa alfredi''), also known as the Visayan deer, the Philippine spotted deer or Prince Alfred's deer, is a nocturnal and endangered species of deer located primarily in the rainforests of the Visayan islands of P ...
Mammals of the Philippines
Endemic fauna of the Philippines
Fauna of Panay
Fauna of Negros Island
Fauna of the Visayas
Visayan spotted deer
The Visayan spotted deer (''Rusa alfredi''), also known as the Visayan deer, the Philippine spotted deer or Prince Alfred's deer, is a nocturnal and endangered species of deer located primarily in the rainforests of the Visayan islands of P ...
Visayan spotted deer
The Visayan spotted deer (''Rusa alfredi''), also known as the Visayan deer, the Philippine spotted deer or Prince Alfred's deer, is a nocturnal and endangered species of deer located primarily in the rainforests of the Visayan islands of P ...