The blackbuck ( Antilope cervicapra), also known as the Indian antelope, is a medium-sized antelope native to India and Nepal. It inhabits grassy plains and lightly forested areas with perennial water sources. It stands up to high at the shoulder. Males weigh , with an average of . Females are lighter, weighing or on average. Males have long corkscrew horns, and females occasionally develop horns, as well. The white fur on the chin and around the eyes is in sharp contrast with the black stripes on the face. Both sexes' coats feature a two-tone colouration; in males, the majority of the body is dark brown to black, with white circles around the eyes, white ears and tail, and the belly, lower jaw, and inner legs also white. Females and juveniles are yellowish-fawn to tan and display the same white areas, only with more of a beige tone than the males. Females also feature a more pronounced horizontal white side-stripe, starting around the shoulder and ending at the rump. The blackbuck is the sole living member of the genus Antilope and was described by Carl Linnaeus in 1758. Two subspecies are recognized.
The blackbuck is Diurnality. It forms three types of small groups: female, male, and young bachelor herds. Males often adopt lekking as a strategy to garner females for mating. While other males are not allowed into these territories, females often visit these places to forage. The male can thus attempt mating with her. The blackbuck is an herbivore and grazes on low grasses, occasionally browsing as well. Females become sexually mature at the age of eight months, but mate no earlier than two years of age. Males mature later, at 1.5 years. Mating takes place throughout the year. Gestation is typically six months long, after which a single calf is born. The lifespan is typically 10 to 15 years.
The antelope is native to and occurs mainly in India, while it is locally extinct in Pakistan and Bangladesh. Formerly widespread, small and scattered herds are largely confined to protected areas today. During the 20th century, blackbuck numbers declined sharply due to excessive hunting, deforestation, and habitat destruction. The blackbuck has been introduced in Argentina, Australia and the United States, primarily on hunting ranches. In Argentina, the population is surviving well. In India, hunting of blackbuck is prohibited under Schedule I of the Wildlife Protection Act of 1972. The blackbuck has significance in Hinduism; Indian and Nepali villagers do not harm the antelope.
Antilope, Eudorcas, Gazella, and Nanger form a clade within their tribe Antilopini. A 1995 study of the detailed karyotype of Antilope suggested that within this clade, Antilope is closest to the Gazella group. A 1999 phylogenetic analysis confirmed that Antilope is the closest sister taxon to Gazella, although an earlier phylogeny, proposed in 1976, placed Antilope as sister to Nanger. In a more recent revision of the phylogeny of the Antilopini on the basis of sequences from multiple nuclear and loci in 2013, Eva Verena Bärmann (of the University of Cambridge) and colleagues re-examined the phylogenetic relationships and found Antilope and Gazella to be sister genera distinct from the sister genera Nanger and Eudorcas.
Two subspecies are recognised, although they might be independent species:
A 1997 study found lower variation in blood protein polymorphism in Antilope in comparison with Antidorcas, Eudorcas, and Gazella. This was attributed to a history of rapid evolution of an autapomorphic phenotype of Antilope. This might have been aided by a particularly strong selection of a few dominant males due to their lekking behaviour.
The blackbuck is a moderately sized antelope. It stands up to high at the shoulder; the head-to-body length is nearly . In the population introduced to Texas, males weigh , an average of . Females are lighter, weighing or on average. Sexual dimorphism is prominent, as males are heavier and darker than the females. The long, ringed horns, that resemble corkscrews, are generally present only on males, though females may also develop horns. They measure , though the maximum horn length recorded in Texas has not exceeded . The horns diverge forming a "V"-like shape. In India, horns are longer and more divergent in specimens from the northern and western parts of the country.
Blackbuck bear a close resemblance to gazelles, and are distinguished mainly by the fact that while gazelles are brown in the dorsal parts, blackbuck develop a dark brown or black colour in these parts.
Today, small, scattered herds are largely confined to protected areas.
In Pakistan, the blackbuck occasionally occurred along the border with India until 2001. In southern Nepal, the last surviving blackbuck population in Blackbuck Conservation Area was estimated to comprise 184 individuals in 2008.
A few blackbucks are present in the Indian Institute of Technology Madras campus.
The blackbuck is considered Local extinction in Pakistan and Bangladesh.
In the early 1900s, blackbuck were introduced to Western Australia.
In either the late 1980s or the early 1990s, they were also introduced to Cape York in Far North Queensland, although the population was subsequently eradicated.
In 2013, an antelope that appeared to be a blackbuck was sighted at Kakadu National Park in the Northern Territory.
In 2015, a blackbuck was sighted near Warrnambool, Victoria, which was later captured and sent to Mansfield Zoo.
The blackbuck is a declared pest in Queensland and Western Australia. In Victoria, blackbuck and American bison are considered both "regulated pest animals" and livestock.
The antelope was introduced in Texas in the Edwards Plateau in 1932. By 1988, the population had increased and the antelope was the most populous exotic animal in Texas after the chital.
Group size fluctuates and seems to depend on the availability of forage and the nature of the habitat. Large herds have an edge over smaller ones in that danger can be detected faster, though individual vigilance is lower in the former. Large herds spend more time feeding than small herds. A disadvantage for large herds, however, is that traveling requires more resources. Herd size reduces in summer.
Males often adopt lekking as a strategy on the part of males to garner females for mating. Territories are established by males on the basis of the local distribution of female groups, which in turn is determined by the habitat, so as to ensure greater access to females. The males actively defend resources in their territories, nearly in size; territories are marked with scent using preorbital gland and interdigital gland secretions, faeces and urine. While other males are not allowed into these territories, females are allowed to visit these places to forage. The male can attempt mating with visiting females. Lekking is a demanding strategy, as the males often have to bear injuries – thus it is a tactic typically adopted by strong, dominant males. Males may either defend their mates or try to forcibly copulate with them. Weaker males, who may not be dominant, might choose the second method.
The blackbuck is severely affected by natural calamities such as and , from which it can take as long as five years to recover. The wolf is a major predator. Old rutting bulls might be especially vulnerable prey. The golden jackal hunts juveniles. Village dogs are reported to kill fawns, but are unlikely to successfully hunt and kill adults.
Blackbucks in Great Indian Bustard Sanctuary show flexible habitat use as the resources and risks change seasonally in the landscape. They use small patches in the area of about . Human activities strongly influenced the movement of herds, but the presence of small refuges allowed them to persist in the landscape.
Gestation typically lasts six months, after which a single calf is born. Newborns are a light yellow; infant males may have a black patch on the head and the neck. Young are precocial, they can stand on their own soon after birth. Females can mate again after a month of parturition. Juveniles remain active and playful throughout the day. Juvenile males turn black gradually, darkening notably after the third year. The lifespan is typically 10 to 15 years.
Until India's independence in 1947, blackbuck and chinkara were hunted in many princely states with specially trained captive . By the 1970s, blackbuck was locally extinct in several areas.
The blackbuck is mentioned in Sanskrit texts as the Kṛṣṇamṛga. According to Hindu mythology, it draws the chariot of Lord Krishna. The blackbuck is considered to be the vehicle of the wind god Vayu, the divine drink Soma and the moon god Chandra.
In the Yājñavalkya Smṛti, Yagyavalkya is quoted stating " in what country there is black antelope, in that Dharma must be known", which is interpreted to mean that certain religious practices including sacrifices were not to be performed where blackbuck did not roam.
The hide of the blackbuck is deemed to be sacred in Hinduism. According to the scriptures, it is to be sat upon only by brahmin priests, sadhus and yogis, forest-dwellers and bhikshu mendicants. Blackbuck meat is highly regarded in Texas.
In some agricultural areas in northern India, the blackbuck are found in large numbers and raid crop fields. However, the damage caused by blackbuck is far lower than that caused by the nilgai.
In 2018, Bollywood actor Salman Khan was sentenced to five years imprisonment for poaching a blackbuck in 1998.
Genetics
Characteristics
Distribution and habitat
Introduced populations
Ecology and behaviour
Diet
Reproduction
Threats
Conservation
A captive population is maintained in Pakistan's Lal Suhanra National Park.
In culture
See also
External links
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