The nilgai (''Boselaphus tragocamelus'') (, literally meaning "blue cow") is the largest
Asia
Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an area ...
n
antelope
The term antelope is used to refer to many species of even-toed ruminant that are indigenous to various regions in Africa and Eurasia.
Antelope comprise a wastebasket taxon defined as any of numerous Old World grazing and browsing hoofed mammals ...
and is ubiquitous across the northern Indian subcontinent. It is the sole member of the
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
''Boselaphus'' and was
described by
Peter Simon Pallas
Peter Simon Pallas Fellow of the Royal Society, FRS FRSE (22 September 1741 – 8 September 1811) was a Prussian zoologist and botanist who worked in Russia between 1767 and 1810.
Life and work
Peter Simon Pallas was born in Berlin, the son ...
in 1766. The nilgai stands at the shoulder; males weigh , and the lighter females . A sturdy thin-legged antelope, the nilgai is characterised by a sloping back, a deep neck with a white patch on the throat, a short crest of hair along the neck terminating in a tuft, and white facial spots. A column of pendant coarse hair hangs from the dewlap ridge below the white patch.
Sexual dimorphism
Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most ani ...
is prominent – while females and juveniles are orange to tawny, adult males have a bluish-grey
coat
A coat typically is an outer garment for the upper body as worn by either gender for warmth or fashion. Coats typically have long sleeves and are open down the front and closing by means of buttons, zippers, hook-and-loop fasteners, toggles, a ...
. Only males possess
horns Horns or The Horns may refer to:
* Plural of Horn (instrument), a group of musical instruments all with a horn-shaped bells
* The Horns (Colorado), a summit on Cheyenne Mountain
* ''Horns'' (novel), a dark fantasy novel written in 2010 by Joe Hill ...
, long.
The nilgai is
diurnal (active mainly during the day). The animals band together in three distinct kinds of groups: one or two females with young calves, three to six adult and yearling females with calves, and all-male groups with two to 18 members. Typically tame, the nilgai may appear timid and cautious if harassed or alarmed; it flees up to , or even , galloping away from the source of danger. Herbivores, nilgai prefer grasses and herbs, though they commonly eat
woody plant
A woody plant is a plant that produces wood as its structural tissue and thus has a hard stem. In cold climates, woody plants further survive winter or dry season above ground, as opposite to herbaceous plants that die back to the ground until sp ...
s in the dry tropical forests of India. Females become
sexually mature
Sexual maturity is the capability of an organism to reproduce. In humans it might be considered synonymous with adulthood, but here puberty is the name for the process of biological sexual maturation, while adulthood is based on cultural definitio ...
by two years, while males do not become sexually active until four or five years old. The time of the year when mating takes place varies geographically, but a peak breeding season lasting three to four months can be observed at most places.
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 ...
lasts eight to nine months, following which a single calf (sometimes twins or even triplets) is born. As typical of several bovid species, nilgai calves stay hidden for the first few weeks of their lives. The lifespan of the nilgai is around ten years.
The nilgai prefers areas with short bushes and scattered trees in
scrub forest
Shrubland, scrubland, scrub, brush, or bush is a plant community characterized by vegetation dominated by shrubs, often also including grasses, herbs, and geophytes. Shrubland may either occur naturally or be the result of human activity. It ma ...
s and grassy plains. It is common in agricultural land, but rarely in dense forest. Major populations occur in the Indian and Nepal
Terai
The Terai or Tarai is a lowland region in northern India and southern Nepal that lies south of the outer foothills of the Himalayas, the Sivalik Hills, and north of the Indo-Gangetic Plain. This lowland belt is characterised by tall grasslands, scr ...
. It was thought to be extinct in
Bangladesh
Bangladesh (}, ), officially the People's Republic of Bangladesh, is a country in South Asia. It is the eighth-most populous country in the world, with a population exceeding 165 million people in an area of . Bangladesh is among the mos ...
. The nilgai was introduced to
Texas
Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2 ...
in the 1920s to 1930s. As of 2008, the feral population in Texas is nearly 37,000. The nilgai is categorised as
Least Concern
A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation because the specific species is still plentiful in the wild. T ...
on the
IUCN Red List
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biol ...
. The nilgai has been associated with
Indian culture
Indian culture is the heritage of social norms, ethical values, traditional customs, belief systems, political systems, artifacts and technologies that originated in or are associated with the ethno-linguistically diverse India. The term al ...
since the
Vedic period
The Vedic period, or the Vedic age (), is the period in the late Bronze Age and early Iron Age of the history of India when the Vedic literature, including the Vedas (ca. 1300–900 BCE), was composed in the northern Indian subcontinent, betw ...
(1500–500 BCE). They were hunted in the
Mughal era
The Mughal Empire was an early-modern empire that controlled much of South Asia between the 16th and 19th centuries. Quote: "Although the first two Timurid emperors and many of their noblemen were recent migrants to the subcontinent, the d ...
(16th to 19th centuries) and are depicted in numerous miniatures. Nilgai have been considered a pest in several
north India
North India is a loosely defined region consisting of the northern part of India. The dominant geographical features of North India are the Indo-Gangetic Plain and the Himalayas, which demarcate the region from the Tibetan Plateau and Central ...
n states, as they ravage crop fields and cause considerable damage. In
Bihar
Bihar (; ) is a state in eastern India. It is the 2nd largest state by population in 2019, 12th largest by area of , and 14th largest by GDP in 2021. Bihar borders Uttar Pradesh to its west, Nepal to the north, the northern part of West Be ...
, authorities have classified the nilgai as
vermin
Vermin (colloquially varmint(s) or varmit(s)) are pests or nuisance animals that spread diseases or destroy crops or livestock. Since the term is defined in relation to human activities, which species are included vary by region and enterpr ...
.
Etymology
The vernacular name "nilgai" comes from the fusion of the Hindi words ''nil'' ("blue") and ''gai'' ("cow"). The word was first recorded in use in 1882. Alternative origins could be from the Persian ''gaw'' ("cow").
[ The nilgai has been referred to by a variety of names: neelghae,][ nilgau, nilgo,][ nylghau,] and nylghai, constructions referring to other "blue" animals. They are also known as white-footed antelope.[ During ]Mughal emperor
The Mughal emperors ( fa, , Pādishāhān) were the supreme heads of state of the Mughal Empire on the Indian subcontinent, mainly corresponding to the modern countries of India, Pakistan, Afghanistan and Bangladesh. The Mughal rulers styled t ...
Aurangzeb
Muhi al-Din Muhammad (; – 3 March 1707), commonly known as ( fa, , lit=Ornament of the Throne) and by his regnal title Alamgir ( fa, , translit=ʿĀlamgīr, lit=Conqueror of the World), was the sixth emperor of the Mughal Empire, ruling ...
's reign (1658–1707) of India, the nilgai was known by the name ''nilghor'' ("nil" for "blue" and "ghor" for "horse").[
]
Taxonomy
The scientific name
In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...
of the nilgai is ''Boselaphus tragocamelus.'' The nilgai is the sole member of the genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
''Boselaphus'' and placed in the family
Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...
Bovidae. The species was described and given its binomial name by the German zoologist Peter Simon Pallas
Peter Simon Pallas Fellow of the Royal Society, FRS FRSE (22 September 1741 – 8 September 1811) was a Prussian zoologist and botanist who worked in Russia between 1767 and 1810.
Life and work
Peter Simon Pallas was born in Berlin, the son ...
in 1766. He based his description on a 1745 account of a male nilgai by British physician James Parsons in the 43rd volume of ''Philosophical Transactions'' (now known as the '' Philosophical Transactions of the Royal Society''). The nilgai has one other relative in the tribe
The term tribe is used in many different contexts to refer to a category of human social group. The predominant worldwide usage of the term in English language, English is in the discipline of anthropology. This definition is contested, in p ...
Boselaphini, the four-horned antelope (the sole member of ''Tetracerus
The four-horned antelope (''Tetracerus quadricornis''), or ''chousingha'', is a small antelope found in India and Nepal. Its four horns distinguish it from most other bovids, which have two horns (with a few exceptions, such as the Jacob sheep). ...
'').
The generic name ''Boselaphus'' comes from the combination of the Latin ''bos'' ("cow" or "ox") and the Greek ("deer"). The specific name ''tragocamelus'' comes from the join of the two Greek words ''tragos'' ("he-goat") and ''kamelos'' ("camel"). The binomial combination was first used by English zoologist Philip Sclater in 1883.[ ''Boselaphus'' has often been misspelled as ''Buselaphus'' (first used by ]Ludwig Reichenbach
Heinrich Gottlieb Ludwig Reichenbach (8 January 1793 – 17 March 1879) was a German botanist and ornithologist. It was he who first requested Leopold Blaschka to make a set of glass marine invertebrate models for scientific education and museu ...
in 1845 for the red hartebeest
The red hartebeest (''Alcelaphus buselaphus caama''), also called the Cape hartebeest or Caama, is a subspecies of the hartebeest found in Southern Africa. More than 130,000 individuals live in the wild. The red hartebeest is closely related to t ...
) and ''Bosephalus'' (first used by Thomas Horsfield
Thomas Horsfield (May 12, 1773 – July 24, 1859) was an American physician and natural history, naturalist who worked extensively in Indonesia, describing numerous species of plants and animals from the region. He was later a curator of the Eas ...
in 1851, when he mistook a nilgai specimen for a hartebeest in a museum catalogue of the East India Company
The East India Company (EIC) was an English, and later British, joint-stock company founded in 1600 and dissolved in 1874. It was formed to trade in the Indian Ocean region, initially with the East Indies (the Indian subcontinent and Southea ...
).
Evolution
A 1992 phylogenetic
In biology, phylogenetics (; from Greek φυλή/ φῦλον [] "tribe, clan, race", and wikt:γενετικός, γενετικός [] "origin, source, birth") is the study of the evolutionary history and relationships among or within groups o ...
study of mitochondrial DNA
Mitochondrial DNA (mtDNA or mDNA) is the DNA located in mitochondria, cellular organelles within eukaryotic cells that convert chemical energy from food into a form that cells can use, such as adenosine triphosphate (ATP). Mitochondrial D ...
sequences showed a strong possibility of a clade
A clade (), also known as a monophyletic group or natural group, is a group of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree. Rather than the English term, ...
consisting of Boselaphini, Bovini, and Tragelaphini
The tribe Tragelaphini (sometimes referred to by some authors as "Strepsicerotini"), or the spiral-horned antelopes, are bovines that are endemic to sub- Sahara Africa. These include the bushbuck, kudus, and the elands. The scientific name is in ...
. Bovini consists of the genera ''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 of ...
'', '' Bos'', ''Pseudoryx'' (saola
The saola (''Pseudoryx nghetinhensis''), also called spindlehorn, Asian unicorn, or infrequently, Vu Quang bovid, is one of the world's rarest large mammals, a forest-dwelling bovine native to the Annamite Range in Vietnam and Laos. It was descr ...
), ''Syncerus'' ( African Buffalo), ''Bison
Bison are large bovines in the genus ''Bison'' (Greek: "wild ox" (bison)) within the tribe Bovini. Two extant and numerous extinct species are recognised.
Of the two surviving species, the American bison, ''B. bison'', found only in North Ame ...
'' and the extinct
Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...
''Pelorovis
''Pelorovis'' ("prodigious/monstrous sheep") is an extinct genus of African wild cattle which existed during the Pleistocene epoch.Alan Turner & Mauricio Anton: ''Evolving Eden, An Illustrated Guide to the Evolution of the African Large-Mammal Fau ...
''. Tragelaphini consists of two genera: ''Taurotragus
''Taurotragus'' is a genus of large antelopes of the African savanna, commonly known as elands. It contains two species: the common eland ''T. oryx'' and the giant eland ''T. derbianus''.
Taxonomy
''Taurotragus'' is a genus of large African ...
'' (eland) and ''Tragelaphus
''Tragelaphus'' is a genus of medium- to large-sized, spiral-horned antelopes. It contains several species of bovines, all of which are relatively antelope-like. Species in this genus tend to be large in size and lightly built, and have long nec ...
''. A closer relationship between Boselaphini and Tragelaphini was predicted, and seconded by a similar study in 1999.
Though the tribe Boselaphini has no African representation today, fossil
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ...
evidence supports its presence in the continent in the prehistoric times, as early as the late Miocene
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recen ...
. The two living antelope species of this tribe have been found to have a closer relationship with the earliest bovids (like ''Eotragus
''Eotragus'' is an extinct genus of early bovid. Species belonging to the genus inhabited Europe, Africa, and Asia during the Miocene some 20-18 million years ago. It is related to the modern nilgai and four-horned antelope. It was small and pr ...
'' species) than do the other bovids. This tribe originated at least 8.9 million years ago, in much the same area where the four-horned antelope lives today, and may represent the most "primitive" of all living bovids, having changed the least since the origins of the family. The extant and extinct boselaphine forms show similar development of the horn
Horn most often refers to:
*Horn (acoustic), a conical or bell shaped aperture used to guide sound
** Horn (instrument), collective name for tube-shaped wind musical instruments
*Horn (anatomy), a pointed, bony projection on the head of various ...
cores (the central bony part of the horn). Though the extant nilgai females lack horns, historic relatives of the antelope had horned females. Fossil relatives were once placed in the subfamily Cephalophinae which now contains only the African duikers. Fossils of '' Protragoceros'' and '' Sivoreas'' dating back to the late Miocene have been discovered not only in Asia and southern Europe but also in the Ngorora Formation
The Ngorora Formation is a geological formation in Kenya preserving fossils dating to the Miocene. The uppermost member of the formation shows sign of a faunal turnover that occurred around 11 to 10.5 million years ago, coinciding with faunal cha ...
(Kenya
)
, national_anthem = "Ee Mungu Nguvu Yetu"()
, image_map =
, map_caption =
, image_map2 =
, capital = Nairobi
, coordinates =
, largest_city = Nairobi
, ...
) and are thought to belong to the Boselaphini. Other Miocene fossils of boselaphines discovered are of ''Miotragocerus
''Miotragocerus'', also known as the European eland, is an extinct species of antelope that once lived in Europe in 10 to 8 million years ago. They were most likely browsers
Browse, browser or browsing may refer to:
Programs
* Web browser, a ...
'', '' Tragocerus'', and '' (''; fossils of ''Miotragoceros'' are not apparent in Africa (only ''M. cyrenaicus'' has been reported from the continent), but have significant presence in the Shiwalik Hills
The Sivalik Hills, also known as the Shivalik Hills and Churia Hills, are a mountain range of the outer Himalayas that stretches over about from the Indus River eastwards close to the Brahmaputra River, spanning the northern parts of the Indian ...
in India
India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...
and Pakistan
Pakistan ( ur, ), officially the Islamic Republic of Pakistan ( ur, , label=none), is a country in South Asia. It is the world's List of countries and dependencies by population, fifth-most populous country, with a population of almost 24 ...
, as do several ''Tragoportax'' species. A 2005 study showed the migration of ''Miotragoceros'' to eastern Asia around eight million years ago. Alan W. Gentry of the Natural History Museum reported the presence of another boselaphine, '' Mesembriportax'', from Langebaanweg (South Africa
South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countri ...
).
Remains of the nilgai dating back to the Pleistocene
The Pleistocene ( , often referred to as the ''Ice age'') is the geological Epoch (geology), epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fina ...
have been discovered from the Kurnool caves in southern India. Evidence suggests that they were hunted by humans during the Mesolithic
The Mesolithic (Greek: μέσος, ''mesos'' 'middle' + λίθος, ''lithos'' 'stone') or Middle Stone Age is the Old World archaeological period between the Upper Paleolithic and the Neolithic. The term Epipaleolithic is often used synonymous ...
period (5,000 to 8,000 years ago).
Description
A sturdy thin-legged antelope, the nilgai is characterised by a sloping back, a deep neck with a white patch on the throat, a short mane of hair behind and along the back ending behind the shoulder, and around two white spots each on its face, ears, cheeks, lips and chin.[ The ears, tipped with black, are long.][ A column of coarse hair, known as the "pendant" and around long in males, can be observed along the dewlap ridge below the white throat patch.][ The tufted tail, up to ,] has a few white spots and is tipped with black.[ The forelegs are generally longer,] and the legs are often marked with white "socks".[
While females and juveniles are orange to tawny, males are much darker – their ]coat
A coat typically is an outer garment for the upper body as worn by either gender for warmth or fashion. Coats typically have long sleeves and are open down the front and closing by means of buttons, zippers, hook-and-loop fasteners, toggles, a ...
is typically bluish grey. The ventral
Standard anatomical terms of location are used to unambiguously describe the anatomy of animals, including humans. The terms, typically derived from Latin or Greek language, Greek roots, describe something in its standard anatomical position. Th ...
parts, the insides of the thighs and the tail are all white. A white stripe extends from the underbelly and broadens as it approaches the rump
Rump may refer to:
* Rump (animal)
** Buttocks
* Rump steak, slightly different cuts of meat in Britain and America
* Rump kernel, software run in userspace that offers kernel functionality in NetBSD
Politics
*Rump cabinet
* Rump legislature
* Ru ...
, forming a patch lined with dark hair. Almost white, though not albino, individuals have been observed in the Sariska National Park
Sariska Tiger Reserve is a tiger reserve in Alwar district, Rajasthan, India. It stretches over an area of comprising scrub-thorn arid forests, dry deciduous forests, grasslands, and rocky hills. This area was a hunting preserve of the Alwar ...
. while individuals with white patches have been recorded at zoos. The hairs, typically long, are fragile and brittle. Males have thicker skin on their head and neck that protect them in fights. The coat is not well-insulated with fat during winter, and consequently severe cold might be fatal for the nilgai.
Males are horned, and the occasional female. The horns are long but generally shorter than .[ Smooth and straight, these may point backward or forward.] The horns of the nilgai lack the ringed structure typical of those of other bovids.
The nilgai is the largest antelope in Asia. It stands at the shoulder; the head-and-body length is typically between .[ Males weigh ; the maximum weight recorded is . Females are lighter, weighing .][ ]Sexual dimorphism
Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most ani ...
is prominent; the males are larger than females and differ in colouration.[
The maximum recorded length of the skull is . The dental formula is . The ]milk teeth
Deciduous teeth or primary teeth, also informally known as baby teeth, milk teeth, or temporary teeth,Illustrated Dental Embryology, Histology, and Anatomy, Bath-Balogh and Fehrenbach, Elsevier, 2011, page 255 are the first set of teeth in the ...
are totally lost and the permanent dentition completed by three years of age. The permanent teeth get degraded with age, showing prominent signs of wear at six years of age. The nilgai has sharp ears and eyes, though its sense of smell is not as acute.
Distribution and habitat
The nilgai is 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 ...
to the Indian subcontinent
The Indian subcontinent is a list of the physiographic regions of the world, physiographical region in United Nations geoscheme for Asia#Southern Asia, Southern Asia. It is situated on the Indian Plate, projecting southwards into the Indian O ...
: major populations occur in India
India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...
, Nepal
Nepal (; ne, नेपाल ), formerly the Federal Democratic Republic of Nepal ( ne,
सङ्घीय लोकतान्त्रिक गणतन्त्र नेपाल ), is a landlocked country in South Asia. It is mai ...
and Pakistan
Pakistan ( ur, ), officially the Islamic Republic of Pakistan ( ur, , label=none), is a country in South Asia. It is the world's List of countries and dependencies by population, fifth-most populous country, with a population of almost 24 ...
. It was thought to be extinct in Bangladesh
Bangladesh (}, ), officially the People's Republic of Bangladesh, is a country in South Asia. It is the eighth-most populous country in the world, with a population exceeding 165 million people in an area of . Bangladesh is among the mos ...
but recent reports suggest otherwise. Significant numbers occur in the Terai
The Terai or Tarai is a lowland region in northern India and southern Nepal that lies south of the outer foothills of the Himalayas, the Sivalik Hills, and north of the Indo-Gangetic Plain. This lowland belt is characterised by tall grasslands, scr ...
lowlands in the foothills of the Himalaya
The Himalayas, or Himalaya (; ; ), is a mountain range in Asia, separating the plains of the Indian subcontinent from the Tibetan Plateau. The range has some of the planet's highest peaks, including the very highest, Mount Everest. Over 100 ...
s; the antelope is abundant across northern India.
It prefers areas with short bushes and scattered trees in scrub forest
Shrubland, scrubland, scrub, brush, or bush is a plant community characterized by vegetation dominated by shrubs, often also including grasses, herbs, and geophytes. Shrubland may either occur naturally or be the result of human activity. It ma ...
s and grassy plains. They are common in agricultural lands, but hardly occur in dense woods. In southern Texas, it roams in the prairies, scrub forests and oak
An oak is a tree or shrub in the genus ''Quercus'' (; Latin "oak tree") of the beech family, Fagaceae. There are approximately 500 extant species of oaks. The common name "oak" also appears in the names of species in related genera, notably ''L ...
forests. It is a generalist
A generalist is a person with a wide array of knowledge on a variety of subjects, useful or not. It may also refer to:
Occupations
* a physician who provides general health care, as opposed to a medical specialist; see also:
** General pract ...
animal—it can adapt to a variety of habitats.[ Though sedentary and less dependent on water, nilgai may desert their territories if all water sources in and around it dry up.][ Territories in Texas are large.][
The Indian population was estimated at one million in 2001.][ The nilgai were first introduced to ]Texas
Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2 ...
in the 1920s and the 1930s in a large ranch near the Norias Division of the King Ranch, one of the largest ranches in the world. The feral population saw a spurt toward the latter part of the 1940s, and gradually spread out to adjoining ranches.
Population densities show great geographical variation across India. Density can be as low as 0.23 to 0.34 individuals per km2 in Indravati National Park. and 0.4 individuals per km2 in the Pench Tiger Reserve, or as high as 6.6 to 11.36 individuals per km2 in Ranthambhore National Park, and seven individuals per km2 in Keoladeo National Park. Seasonal variations were noted in Bardiya National Park in a 1980 study; the density 3.2 individuals per km2 during the dry season and 5 per km2 in April, the start of the dry season.[ In southern Texas, densities were found to be nearly 3–5 individuals per km2 in 1976.][
Historic notes mention nilgai in southern India, but these may have been feral:
]
Behavior and ecology
The nilgai is diurnal (active mainly during the day). A 1991 study investigated the daily routine of the antelope and found feeding peaks at dawn, in the morning, in the afternoon and during the evening. Females and juveniles do not interact appreciably with males, except during the mating season. Groups are generally small, with ten or fewer individuals, though groups of 20 to 70 individuals can occur at times. In a 1980 study in Bardiya National Park, the average herd size was of three individuals; In a 1995 study in the Gir National Park
Gir National Park and Wildlife Sanctuary, also known as Sasan Gir, is a forest, national park, and wildlife sanctuary near Talala Gir in Gujarat, India. It is located north-east of Somnath, south-east of Junagadh and south-west of Amreli ...
, herd membership varied with season. However, three distinct groupings are formed: one or two females with young calves, three to six adult and yearling females with calves, and male groups with two to 18 members.
Typically tame, the nilgai may appear timid and cautious if harassed or alarmed; instead of seeking cover like duiker
A duiker is a small to medium-sized brown antelope native to sub-Saharan Africa, found in heavily wooded areas. The 22 extant species, including three sometimes considered to be subspecies of the other species, form the subfamily Cephalophina ...
s it would flee up to -or even on galloping-away from the danger. Though generally quiet, nilgai have been reported to make short guttural grunts when alarmed, and females to make clicking noises when nursing young. Alarmed individuals, mainly juveniles below five months, give out a coughing roar (whose pitch is highest in case of the juveniles) that lasts half a second, but can be heard by herds less than away and responded to similarly.
Fights take place in both sexes and involve pushing their necks against each other or ramming into one another using horns. Fights can be gory; despite the protective skin deep, lacerated wounds and even deaths might occur. Display
Display may refer to:
Technology
* Display device, output device for presenting information, including:
** Cathode ray tube, video display that provides a quality picture, but can be very heavy and deep
** Electronic visual display, output devi ...
behaviour focuses on the throat patch and the beard, and threatening opponents by pointing the horns toward them. A young male was observed making a submissive display in the Sariska Reserve by kneeling before an adult male, who stood erect. The nilgai mark their territories by forming dung piles as much as in radius. The defecation process is elaborate-the antelope stands with his legs about a metre apart, with the rump lowered and the tail held almost vertical; it stays in the same posture for at least ten seconds after relieving itself. The process is not as elaborate in the females as it is in the males.
In India, the nilgai shares its habitat with the four-horned antelope, chinkara
The chinkara (''Gazella bennettii''), also known as the Indian gazelle, is a gazelle species native to Iran, Afghanistan, Pakistan and India.
Taxonomy
The following six subspecies are considered valid:
* Deccan chinkara (''G. b. bennettii'') ...
, chital and blackbuck; its association with the gaur and the water buffalo
The water buffalo (''Bubalus bubalis''), also called the domestic water buffalo or Asian water buffalo, is a large bovid originating in the Indian subcontinent and Southeast Asia. Today, it is also found in Europe, Australia, North America, So ...
is less common.[ In ]Ranthambore National Park
Ranthambore National Park is a national park in Rajasthan, India, with an area of . It is bounded to the north by the Banas River and to the south by the Chambal River. It is named after the historic Ranthambore Fort, which lies within the park ...
, the nilgai and the chinkara collectively prefer the area rich in ''Acacia
''Acacia'', commonly known as the wattles or acacias, is a large genus of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially, it comprised a group of plant species native to Africa and Australasia. The genus na ...
'' and ''Butea
''Butea'' is a genus of flowering plants belonging to the pea family, Fabaceae. It is sometimes considered to have only two species, '' B. monosperma'' and '' B. superba'',Gwilym Lewis, Brian Schrire, Barbara MacKinder, and Mike Lock. 2005. '' ...
'' species, while the sambar deer
The sambar (''Rusa unicolor'') is a large deer native to the Indian subcontinent and Southeast Asia that is listed as a vulnerable species on the IUCN Red List since 2008. Populations have declined substantially due to severe hunting, local ins ...
and the chital preferred the forests of '''' and ''Grewia
''Grewia'' is a large flowering plant genus in the mallow family Malvaceae, in the expanded sense as proposed by the Angiosperm Phylogeny Group. Formerly, Grewia was placed in either the family Tiliaceae or the Sparrmanniaceae. However, these ...
'' species. In India, the Bengal tiger
The Bengal tiger is a population of the ''Panthera tigris tigris'' subspecies. It ranks among the biggest wild cats alive today. It is considered to belong to the world's charismatic megafauna.
The tiger is estimated to have been present in ...
and Asiatic lion prey on the nilgai but they are not significant predators of this antelope.[ The ]leopard
The leopard (''Panthera pardus'') is one of the five extant species in the genus '' Panthera'', a member of the cat family, Felidae. It occurs in a wide range in sub-Saharan Africa, in some parts of Western and Central Asia, Southern Russia, a ...
preys on the nilgai, though prefers smaller prey. The dhole generally attacks juveniles.[ Other predators include the ]wolf
The wolf (''Canis lupus''; : wolves), also known as the gray wolf or grey wolf, is a large canine native to Eurasia and North America. More than thirty subspecies of ''Canis lupus'' have been recognized, and gray wolves, as popularly u ...
and striped hyena.[
]
Diet
The nilgai is a browser[ or mixed feeder, but primarily a grazer in Texas.][ It prefers grasses and herbs, but also feeds on ]woody plant
A woody plant is a plant that produces wood as its structural tissue and thus has a hard stem. In cold climates, woody plants further survive winter or dry season above ground, as opposite to herbaceous plants that die back to the ground until sp ...
s in the dry tropical forests of India. Diets generally suffice in protein and fats. The protein content of the nilgai's should be at least seven percent. The nilgai can survive for long periods without water and does not drink regularly even in summer.[
In Sariska Reserve, it prefers herbs and grasses; grasses become more important in the rainy season, while during winter and summer it feeds additionally on '']Butea monosperma
''Butea monosperma'' is a species of '' Butea'' native to tropical and sub-tropical parts of the South Asia and Southeast Asia, ranging across
Pakistan, India, Bangladesh, Nepal, Sri Lanka, Myanmar, Thailand, Laos, Cambodia, Vietnam, Malaysi ...
'' flowers, foliage of '' Anogeissus pendula'', ''Capparis sepiaria
''Capparis sepiaria'', also commonly called hedge caper or wild caper bush, is a shrub that has a pantropical distribution, especially in dry deciduous forests, foothills and scrub jungles.
Description
''Capparis sepiaria'' is a prickly, eve ...
'', ''Grewia flavescens
''Grewia flavescens'', called rough-leaved raisin, sandpaper raisin, and donkey berry (a name it shares with '' Grewia bicolor''), is a species of flowering plant in the family Malvaceae, native to subSaharan Africa, Yemen, Saudi Arabia, and Indi ...
'' and ''Zizyphus mauritiana
''Ziziphus mauritiana'', also known as Indian jujube, Indian plum, Chinese date, Chinese apple, ber, and dunks is a tropical fruit tree species belonging to the family Rhamnaceae. It is often confused with the closely related Chinese jujube (' ...
''), pods of '' Acacia nilotica'', '' A. catechu'' and A. leucophloea, and fruits of ''Zizyphus mauritiana''.[ Preferred grass species include '']Cenchrus
''Cenchrus'' is a widespread genus of plants in the grass family. Its species are native to many countries in Asia, Africa, Australia, the Americas, and various oceanic islands.
Common names include buffelgrasses, sandburs, and sand spur “sti ...
'' species, '' Cynodon dactylon'', '' Desmostachya bipinnata'', ''Scirpus tuberosus
''Scirpus'' is a genus of grass-like species in the sedge family Cyperaceae many with the common names club-rush, wood club-rush or bulrush (see also bulrush for other plant genera so-named). They mostly inhabit wetlands and damp locations.
Taxo ...
'' and '' Vetiveria zizanoides''. Woody plants eaten include ''Acacia nilotica'', ''A. senegal'', ''A. leucophloea'', ''Clerodendrum phlomidis
''Clerodendrum phlomidis'' is a species of flowering plant in the family Lamiaceae. The plant has been used in Ayurvedic medicine, and some Ayurvedic sources refer to it by the synonym ''Clerodendrum multiflorum''.
In India, the plant is known a ...
'', ''Crotalaria burhia
''Crotalaria burhia'' (Hindi: ) is a plant found in north-west India, mainly in the Thar desert
The Thar Desert, also known as the Great Indian Desert, is an arid region in the north-western part of the Indian subcontinent, Subcontinent ...
'', ''Indigofera oblongifolia
''Indigofera'' is a large genus of over 750 species of flowering plants belonging to the pea family Fabaceae. They are widely distributed throughout the tropics, tropical and subtropics, subtropical regions of the world.
Description
Species of ' ...
'', ''Morus alba
''Morus alba'', known as white mulberry, common mulberry and silkworm mulberry, is a fast-growing, small to medium-sized mulberry tree which grows to tall. It is generally a short-lived tree with a lifespan comparable to that of humans, although ...
'' and '' Zizyphus nummularia''; herbs favoured are ''Cocculus hirsutus
''Cocculus hirsutus'' is a tropical, invasive creeper with the common name broom creeper or ''Patalgarudi'' (Sanskrit). It is native to India, Pakistan, and tropical Africa. It is a vine climbing up to , with white to yellowish flowers and dark p ...
'', ''Euphorbia hirta
''Euphorbia hirta'' (sometimes called asthma-plant) is a pantropical weed, originating from the tropical regions of the Americas. It is a hairy herb that grows in open grasslands, roadsides and pathways. It is widely used in traditional herbal m ...
'' and ''Sida rhombifolia
''Sida rhombifolia'', commonly known as arrowleaf sida, is a perennial or sometimes annual plant in the Family Malvaceae, native to the Old World tropics and subtropics. Other common names include rhombus-leaved sida, Paddy's lucerne, jelly le ...
''. Seeds of '' Paspalum distichum'' occurred in the dung of nilgai most of the year; ''Acacia nilotica'' and '' Prosopis juliflora'' seeds were discovered in the dry season and those of ''Echinochloa crusgalli
''Echinochloa crus-galli'' is a type of wild grass originating from tropical Asia that was formerly classified as a type of panicum grass. It is commonly known as cockspur (or cockspur grass), barnyard millet, Japanese millet, water grass, common ...
'' during the monsoon.
Reproduction
Observations of females in southern Texas revealed that ovaries
The ovary is an organ in the female reproductive system that produces an ovum. When released, this travels down the fallopian tube into the uterus, where it may become fertilized by a sperm. There is an ovary () found on each side of the body. T ...
are developed by two years of age and the first birth takes place typically a year later, though in a few cases females as young as one-and-a-half years may mate successfully.[ Females can breed again around a year after parturition.][ Males in the same location were found to have active ]testes
A testicle or testis (plural testes) is the male reproductive gland or gonad in all bilaterians, including humans. It is homologous to the female ovary. The functions of the testes are to produce both sperm and androgens, primarily testoster ...
by the age of three years, that matured considerably by the next year. Males become sexually active at four or five years. Mating may occur throughout the year, with peaks of three to four months. The time of the year when these peaks occur varies geographically. In Texas, a peak is apparent from December to March. In Bharatpur National Park
Keoladeo National Park or Keoladeo Ghana National Park (formerly known as the Bharatpur Bird Sanctuary) is a famous avifauna sanctuary in Bharatpur, Rajasthan, India, that hosts thousands of birds, especially during the winter season. Over 350 ...
, the breeding season is from October to February, peaking in November and December. Sariska reserve witnesses a similar peak in December and January.
In the mating season, rutting males move about in search of females in oestrus
The estrous cycle (, originally ) is the set of recurring physiological changes that are induced by reproductive hormones in most mammalian therian females. Estrous cycles start after sexual maturity in females and are interrupted by anestrous ...
.[ Males become aggressive and fight among themselves for dominance. These fights are characterised by displays of the enlarged chest, the throat patch and the beard while holding the head upright; and threatening the opponent by running with the horns pointed toward him and circling him.] The victorious bull would protect the vicinity of the targeted female from other males. The courtship typically lasts for 45 minutes. The male, stiff and composed, approaches the receptive female, who keeps her head low to the ground and may slowly walk forward. The male licks her genitalia, upon which the female holds her tail to a side and the male gives out a flehmen response. Finally, the male pushes his chest against her rump, and mounts her.[
Gestation lasts eight to nine months, following which a single calf or twins (even triplets at times) are born. In a 2004 study in the Sariska reserve, twins accounted for as high as 80 percent of the total calf population.][ Births peak from June to October in the Bharatpur National Park, and from April to August in southern Texas. Calves are precocial; they are able to stand within 40 minutes of birth, and forage by the fourth week.][ Pregnant females isolate themselves before giving birth. As typical of several bovid species, nilgai calves are kept in hiding for the first few weeks of their lives. This period of concealment can last as long as a month in Texas.][ Calves, mainly males, bicker playfully by neck-fighting.] Young males would leave their mothers at ten months to join bachelor groups.[ The lifespan of the nilgai is typically ten years in Texas.][
]
Threats and conservation
The nilgai is categorised as of Least Concern
A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation because the specific species is still plentiful in the wild. T ...
by the International Union for the Conservation of Nature and Natural resources (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 ...
).[ While it is common in India, the nilgai occurs sparsely in Nepal and Pakistan.][ The major reasons behind its decimation in these two countries are rampant hunting, deforestation and habitat degradation in the 20th century. As of 2008, the feral population in Texas was nearly 37,000.][ Wild populations also exist in the US states of ]Alabama
(We dare defend our rights)
, anthem = "Alabama (state song), Alabama"
, image_map = Alabama in United States.svg
, seat = Montgomery, Alabama, Montgomery
, LargestCity = Huntsville, Alabama, Huntsville
, LargestCounty = Baldwin County, Al ...
, Florida
Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and to ...
and Mississippi
Mississippi () is a state in the Southeastern region of the United States, bordered to the north by Tennessee; to the east by Alabama; to the south by the Gulf of Mexico; to the southwest by Louisiana; and to the northwest by Arkansas. Miss ...
and the Mexican state of Tamaulipas
Tamaulipas (), officially the Free and Sovereign State of Tamaulipas ( es, Estado Libre y Soberano de Tamaulipas), is a state in the northeast region of Mexico; one of the 31 states which, along with Mexico City, comprise the 32 Federal Entiti ...
, where they have escaped from private exotic ranches. The population around the Texas-Mexico border is estimated to be around 30,000 (as of 2011).
In India, the nilgai is protected under Schedule III of the Wildlife Protection Act of 1972
The Wild Life (Protection) Act, 1972 is an Act of the Parliament of India enacted for protection of plants and animal species. Before 1972, India had only five designated national parks. Among other reforms, the Act established scheduled pr ...
. Major protected areas for the nilgai across India include: Gir National Park (Gujarat); Bandhavgarh National Park, Bori Wildlife Sanctuary
The Bori Wildlife Sanctuary is a wildlife sanctuary in Hoshangabad District of Madhya Pradesh state in central India.
The sanctuary covers an area of , located in the northern foothills of the Satpura Range. It is bounded by the Satpura Nationa ...
, Kanha National Park
Kanha Tiger Reserve, also known as Kanha–Kisli National Park, is one of the tiger reserves of India and the largest national park of the state of Madhya Pradesh. The present-day Kanha area is divided into two protected areas, Hallon and Banja ...
, Pachmarhi Biosphere Reserve
The Pachmarhi Biosphere Reserve is a non-use conservation area and biosphere reserve in the Satpura Range of Madhya Pradesh states and territories of India, state in central India.
The conservation area was created in 1999 by the Indian governm ...
, Panna Tiger Reserve
Panna National Park is a national park located in Panna and Chhatarpur districts of Madhya Pradesh in India.
It has an area of . It was declared in 1994 as the twenty second Tiger reserve of India and the fifth in Madhya Pradesh,
Panna wa ...
, Pench Tiger Reserve, Sanjay National Park
Sanjay National Park (Guru Ghasidas National Park) is a national park in Koriya district of Chhattisgarh and Sidhi, Singrauli districts of Madhya Pradesh state, India. It covers an area of and is a part of the Sanjay-Dubri Tiger Reserve. It is ...
, Satpura National Park
Satpura Tiger Reserve (STR) also known as Satpura National Park is located in the Hoshangabad District (newly named Narmadapuram ) of Madhya Pradesh in India. Its name is derived from the Satpura range. It covers an area of . Satpura National Pa ...
(Madhya Pradesh); Tadoba Andhari Reserve (Maharashtra
Maharashtra (; , abbr. MH or Maha) is a states and union territories of India, state in the western India, western peninsular region of India occupying a substantial portion of the Deccan Plateau. Maharashtra is the List of states and union te ...
); Kumbhalgarh Wildlife Sanctuary
Kumbhalgarh Wildlife Sanctuary is located in the Rajsamand District of Rajasthan State in western India. It surrounds the Kumbhalgarh fortress and covers an area of . The sanctuary extends across the Aravalli Range, covering parts of Rajsamand ...
, Sultanpur National Park
Sultanpur National Park (Ramsar site )(formerly Sultanpur Bird Sanctuary) is located at Sultanpur village on Gurugram-Jhajjar highway, 15 km from Gurugram, Haryana and 50 km from Delhi in India. This covers approximately 142.52 hec ...
in Gurgaon, Ranthambore National Park
Ranthambore National Park is a national park in Rajasthan, India, with an area of . It is bounded to the north by the Banas River and to the south by the Chambal River. It is named after the historic Ranthambore Fort, which lies within the park ...
and Sariska Tiger Reserve
Sariska Tiger Reserve is a tiger reserve in Alwar district, Rajasthan, India. It stretches over an area of comprising scrub-thorn arid forests, dry deciduous forests, grasslands, and rocky hills. This area was a hunting preserve of the Alwar ...
(Rajasthan).
Cultural significance
Remains of nilgai have been excavated at Pandu Rajar Dhibi in West Bengal
West Bengal (, Bengali: ''Poshchim Bongo'', , abbr. WB) is a state in the eastern portion of India. It is situated along the Bay of Bengal, along with a population of over 91 million inhabitants within an area of . West Bengal is the fourt ...
, suggesting that they were domesticated or hunted in eastern India
East India is a region of India consisting of the Indian states of Bihar, Jharkhand, Odisha
and West Bengal and also the union territory of the Andaman and Nicobar Islands. The region roughly corresponds to the historical region of Magadha fr ...
in the Neolithic
The Neolithic period, or New Stone Age, is an Old World archaeological period and the final division of the Stone Age. It saw the Neolithic Revolution, a wide-ranging set of developments that appear to have arisen independently in several parts ...
period (6500–1400 BCE) and during the Indus Valley civilisation
The Indus Valley Civilisation (IVC), also known as the Indus Civilisation was a Bronze Age civilisation in the northwestern regions of South Asia, lasting from 3300 BCE to 1300 BCE, and in its mature form 2600 BCE to 1900&n ...
(3300–1700 BCE) in the Indian subcontinent. There is a reference to the nilgai in the '' Aitareya Brahmana'' (a Hindu
Hindus (; ) are people who religiously adhere to Hinduism.Jeffery D. Long (2007), A Vision for Hinduism, IB Tauris, , pages 35–37 Historically, the term has also been used as a geographical, cultural, and later religious identifier for ...
religious text dated 500–1000 BCE), where one of the Prajapati
Prajapati ( sa, प्रजापति, Prajāpati, lord and protector of creation) is a Vedic deity of Hinduism. In later literature, Prajapati is identified with the creator god Brahma, but the term also connotes many different gods, depe ...
s (progenitor god) is said to have assumed the form of a nilgai:
Nilgai are extensively featured in paintings, dagger hilts and texts from the Mughal
Mughal or Moghul may refer to:
Related to the Mughal Empire
* Mughal Empire of South Asia between the 16th and 19th centuries
* Mughal dynasty
* Mughal emperors
* Mughal people, a social group of Central and South Asia
* Mughal architecture
* Mug ...
era (16th to 19th centuries); their representation, however, is less frequent than that of horses and camels. On being disturbed while hunting nilgai, the Mughal emperor Jahangir
Nur-ud-Din Muhammad Salim (30 August 1569 – 28 October 1627), known by his imperial name Jahangir (; ), was the fourth Mughal Emperor, who ruled from 1605 until he died in 1627. He was named after the Indian Sufi saint, Salim Chishti.
Ear ...
recorded his ire:
For centuries Indian villagers have associated the nilgai with the cow
Cattle (''Bos taurus'') are large, domesticated, cloven-hooved, herbivores. They are a prominent modern member of the subfamily Bovinae and the most widespread species of the genus ''Bos''. Adult females are referred to as cows and adult ma ...
, a sacred animal revered by Hindu
Hindus (; ) are people who religiously adhere to Hinduism.Jeffery D. Long (2007), A Vision for Hinduism, IB Tauris, , pages 35–37 Historically, the term has also been used as a geographical, cultural, and later religious identifier for ...
s, and the name ("gai" means "cow" in Hindi) indicates the similarity they saw with the cow. The nilgai is rarely consumed by Hindus due to its religious significance. Tribes such as the Bishnois traditionally take care of wild animals like the nilgai. The nilgai was not widely hunted until the 20th century, when habitat degradation and poaching became rampant. The meat of nilgai is said to be lighter and milder flavoured than blackbuck meat.[
]
Culling and conservation
The populations of nilgai in India are so large that farmers in the states of Bihar
Bihar (; ) is a state in eastern India. It is the 2nd largest state by population in 2019, 12th largest by area of , and 14th largest by GDP in 2021. Bihar borders Uttar Pradesh to its west, Nepal to the north, the northern part of West Be ...
, Chhattisgarh
Chhattisgarh (, ) is a landlocked state in Central India. It is the ninth largest state by area, and with a population of roughly 30 million, the seventeenth most populous. It borders seven states – Uttar Pradesh to the north, Madhya Prade ...
, Haryana
Haryana (; ) is an Indian state located in the northern part of the country. It was carved out of the former state of East Punjab on 1 Nov 1966 on a linguistic basis. It is ranked 21st in terms of area, with less than 1.4% () of India's land ar ...
, Madhya Pradesh
Madhya Pradesh (, ; meaning 'central province') is a state in central India. Its capital is Bhopal, and the largest city is Indore, with Jabalpur, Ujjain, Gwalior, Sagar, and Rewa being the other major cities. Madhya Pradesh is the seco ...
, Maharashtra
Maharashtra (; , abbr. MH or Maha) is a states and union territories of India, state in the western India, western peninsular region of India occupying a substantial portion of the Deccan Plateau. Maharashtra is the List of states and union te ...
, Rajasthan
Rajasthan (; lit. 'Land of Kings') is a state in northern India. It covers or 10.4 per cent of India's total geographical area. It is the largest Indian state by area and the seventh largest by population. It is on India's northwestern si ...
and Uttar Pradesh
Uttar Pradesh (; , 'Northern Province') is a state in northern India. With over 200 million inhabitants, it is the most populated state in India as well as the most populous country subdivision in the world. It was established in 1950 ...
have pleaded to the government to cull them. Nilgai herds raid and trample crop fields across these states, often causing food shortages.
Farmers use live electric wires to guard their farms, which kills other animals as well. Farmers in Neemuch (Madhya Pradesh) went on a hunger strike in 2015 demanding compensation for the damage caused by nilgai. Although blackbuck cause a similar problem, the damage caused by them is significantly lower as they merely break off young shoots. A 1990 study suggested culling, building enclosures for the antelopes and fencing off agricultural areas as remedies.[
The governments of Bihar,][ Maharashtra and ]Uttarakhand
Uttarakhand ( , or ; , ), also known as Uttaranchal ( ; the official name until 2007), is a state in the northern part of India. It is often referred to as the "Devbhumi" (literally 'Land of the Gods') due to its religious significance and ...
have urged the Government of India
The Government of India (ISO: ; often abbreviated as GoI), known as the Union Government or Central Government but often simply as the Centre, is the national government of the Republic of India, a federal democracy located in South Asia, c ...
to declare the nilgai as vermin
Vermin (colloquially varmint(s) or varmit(s)) are pests or nuisance animals that spread diseases or destroy crops or livestock. Since the term is defined in relation to human activities, which species are included vary by region and enterpr ...
; the proposal has been implemented in Bihar, where nilgai can now be hunted to minimise the damages incurred by locals. The Uttar Pradesh government
The Government of Uttar Pradesh (ISO: Uttar Pradesh Sarkār; often abbreviated as GoUP) is the subnational government of the Indian state of Uttar Pradesh with the governor as its appointed constitutional head of the state by the President of I ...
has given farmers and firearm licence holders the right to cull the animals. However, animal rights activists in various parts of India
India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...
were unhappy with the decision. Shivanshu K. Srivastava, a columnist
A columnist is a person who writes for publication in a series, creating an article that usually offers commentary and opinions. Column (newspaper), Columns appear in newspapers, magazines and other publications, including blogs. They take the fo ...
and social activist
Activism (or Advocacy) consists of efforts to promote, impede, direct or intervene in social, political, economic or environmental reform with the desire to make changes in society toward a perceived greater good. Forms of activism range fro ...
, wrote that "The culling of nilgais (blue bulls) in Bihar in July 2016 was so deplorable that it doesn't need any justification. The excuse given for this slew by the State government, the then environment minister Prakash Javadekar and the judiciary is so illogical that it mocks all the solutions available to stop the nilgais from destroying the farms. We live in the 21st century and culling is only the very last option we have. The farmers can either opt for fencing around the farmlands or if it's unaffordable, then the government can give ordinances to relocate them to the forests." The state governments have attempted other initiatives to curb the nilgai: in November 2015, the Government of Rajasthan
The Government of Rajasthan is the supreme governing authority of the Indian state of Rajasthan and its 33 districts. It consists of an executive, led by the Governor of Rajasthan, a judiciary and a legislative. Jaipur is the capital of Raja ...
came up with a proposal to allow shooting nilgai with non-lethal darts to inhibit fertilisation
Fertilisation or fertilization (see spelling differences), also known as generative fertilisation, syngamy and impregnation, is the fusion of gametes to give rise to a new individual organism or offspring and initiate its development. Proce ...
in their bodies, so as to regulate their increasing populations. As the name "nilgai" appeals to the religious sentiments of Hindus, the Government of Madhya Pradesh
Government of Madhya Pradesh also known as the State Government of Madhya Pradesh, or locally as the State Government, is the supreme governing authority of the Indian state of Madhya Pradesh and its 52 districts. It consists of an executive, ...
has sought to officially rename it (Hindi for "forest antelope") and the Government of Haryana to rename it as ''roze'' in a bid to make their culling acceptable.
A 1994 study drew attention to the ecological value provided by the nilgai in ravine
A ravine is a landform that is narrower than a canyon and is often the product of streambank erosion.[Yamuna River
The Yamuna ( Hindustani: ), also spelt Jumna, is the second-largest tributary river of the Ganges by discharge and the longest tributary in India. Originating from the Yamunotri Glacier at a height of about on the southwestern slopes of Ban ...](_blank)
. In summer, the faeces of the antelope contained nearly 1.6 percent nitrogen, that could enhance the quality of the soil up to a depth of . Seeds in the droppings could easily germinate and assist in afforestation.
In September 2019, a video surfaced of a nilgai being buried alive with an excavator in Bihar as part of the culling. The state forest department has claimed to have begun an investigation to find those responsible.
References
External links
*
*
{{Authority control
Bovines
Fauna of South Asia
Mammals of Nepal
Mammals of Bangladesh
Mammals of India
Mammals of Pakistan
Mammals described in 1766
Taxa named by Peter Simon Pallas