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The Asian elephant (Elephas maximus), also known as the Asiatic elephant, is the only living Elephas species. It is the largest living land animal in Asia and the second largest living elephantid in the world. It is characterised by its long trunk with a single finger-like processing; large tusks in males; laterally folded large ears and wrinkled grey skin that is partly depigmented on the trunk, ears or neck. Adult males average Template:Cvt in weight and females Template:Cvt. It has a large and well developed neocortex of the brain, is highly intelligent and self-aware being able to display behaviours associated with grief, learning and greeting. Three subspecies are recognised—E. m. maximus, E. m. indicus and E. m. sumatranus.
The Asian elephant is distributed in the Indian subcontinent and Southeast Asia, from India in the west to Borneo in the east, and Nepal in the north to Sumatra in the south. It frequently inhabits grasslands, tropical evergreen forests, semi-evergreen forests, moist deciduous forests, dry deciduous forests and dry thorn forests. It is herbivorous, eating about Template:Cvt of vegetation per day. Cows and calves form groups, while males remain solitary or form "bachelor groups" with other males. During the breeding season, males temporarily join female groups to mate. Wild Asian elephants live to be about 60 years old. While female captive elephants are recorded to have lived beyond 60 years when kept in semi-natural surroundings, Asian elephants die at a much younger age in captivity; captive populations are declining due to a low birth and high death rate.
Since 1986, the Asian elephant has been listed as Endangered on the IUCN Red List, as the population has declined by at least 50 per cent over the last three elephant generations, which is about 60–75 years. It is primarily threatened by loss of habitat, habitat degradation, fragmentation and poaching. The earliest indications of captive use of Asian elephants are engravings on seals of the Indus Valley civilisation dated to the 3rd millennium BC.
TaxonomyEdit
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Carl Linnaeus proposed the scientific name Elephas maximus in 1758 for an elephant from Ceylon.<ref>Template:Cite book</ref> Elephas indicus was proposed by Georges Cuvier in 1798, who described an elephant from India.<ref>Template:Cite book</ref> Coenraad Jacob Temminck named an elephant from Sumatra Elephas sumatranus in 1847.<ref>Template:Cite book</ref> Frederick Nutter Chasen classified all three as subspecies of the Asian elephant in 1940.<ref>Template:Cite journal</ref> These three subspecies are currently recognised as valid taxa.<ref name="MSOF"/><ref name="Shoshani82">Template:Cite journal</ref> Results of phylogeographic and morphological analyses indicate that the Sri Lankan and Indian elephants are not distinct enough to warrant classification as separate subspecies.<ref>Template:Cite journal</ref>
Three subspecies are recognised:<ref name="MSOF"/><ref name="Shoshani82"/>
- Sri Lankan elephant (E. maximus maximus Template:Small)
- Indian elephant (E. maximus indicus Template:Small)
- Sumatran elephant (E. maximus sumatranus Template:Small)
Sri Lankan elephants are the largest subspecies. Their skin colour is darker than of E. m. indicus and of E. m. sumatranus with larger and more distinct patches of depigmentation on ears, face, trunk and belly.<ref name="Shoshani06">Template:Cite book</ref> The skin color of the Indian elephant is generally grey and lighter than that of E. m. maximus but darker than that of E. m. sumatranus.<ref name="Shoshani82"/>
A potential fourth subspecies, the Borneo elephant (Elephas maximus borneensis), occurs in Borneo's northeastern parts, primarily in Sabah (Malaysia), and sometimes in Kalimantan (Indonesia).<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> It was proposed by Paules Deraniyagala in 1950, who described an elephant in an illustration published in the National Geographic magazine, but not as a living elephant in accordance with the rules of the International Code of Zoological Nomenclature.Template:Sfn<ref name="Cranbrook07">Template:Cite journal</ref> These elephants living in northern Borneo are smaller than all the other subspecies, but had larger ears, a longer tail, and straight tusks.<ref>Template:Cite journal</ref> Results of genetic analysis indicate that their ancestors separated from the mainland population about 300,000 years ago.<ref name="Fernando">Template:Cite journal</ref> A study in 2003, using mitochondrial DNA analysis and microsatellite data, indicated that the Borneo elephant population is derived from stock that originated in the region of the Sunda Islands, and suggests that the Borneo population has been separated from the other elephant populations of southeast Asia since the Pleistocene.<ref name=Fernando03>Template:Cite journal</ref>
The following Asian elephants were proposed as extinct subspecies, but are now considered synonymous with the Indian elephant:<ref name="Shoshani82"/>
- Syrian elephant (E. m. asurus), proposed by Deraniyagala, based on fossil remains and Bronze Age illustrations.Template:Sfn<ref>Template:Cite journal</ref>
- Chinese elephant (E. m. rubridens), also proposed by Deraniyagala, based on a Chinese bronze statuette.Template:Sfn
- Javan elephant (E. m. sondaicus), also proposed by Deraniyagala, based on an illustration of a carving on the Buddhist monument of Borobudur.Template:Sfn<ref name="Cranbrook07"/>
EvolutionEdit
The genus Elephas, of which the Asian elephant is the only living member, is the closest relative of the extinct mammoths. The two groups are estimated to have split from each other around 7 million years ago.<ref>Template:Cite journal</ref> Elephas originated in Sub-Saharan Africa during the Pliocene and spread throughout Africa before expanding into the southern half of Asia.<ref name=Haynes1993>Template:Cite book</ref> The earliest Elephas species, Elephas ekorensis, is known from the Early Pliocene of East Africa, around 5–4.2 million years ago.<ref>Template:Cite journal</ref> The oldest remains of the genus in Asia are known from the Siwalik Hills in the Indian subcontinent, dating to the late Pliocene, around 3.6 to 3.2 million years ago, assigned to the species Elephas planifrons.<ref>Template:Cite journal</ref> The modern Asian elephant is suggested to have evolved from the species Elephas hysudricus, which first appeared at the beginning of the Early Pleistocene around 2.6 million years ago, and is primarily known from remains of Early-Middle Pleistocene age found on the Indian subcontinent.<ref>Template:Cite journal</ref> Skeletal remains of E. m. asurus have been recorded from the Middle East: Iran, Iraq, Syria, and Turkey from periods dating between at least 1800 BC and likely 700 BC.<ref name=":0">Template:Cite journal</ref>
DescriptionEdit
In general, the Asian elephant is smaller than the African bush elephant and has the highest body point on the head. The back is convex or level. The ears are small with dorsal borders folded laterally. It has up to 20 pairs of ribs and 34 caudal vertebrae. The feet have five nail-like structures on each forefoot, and four on each hind foot.<ref name="Shoshani82" /> The forehead has two hemispherical bulges, unlike the flat front of the African elephants.<ref name="Clutton-Brock">Template:Cite book</ref> Its long trunk or proboscis has only one fingerlike tip, in contrast to the African elephants, which have two.<ref name="Shoshani82" /> Hence, the Asian species relies more on wrapping around a food item and squeezing it into its mouth, rather than grasping with the tip. Asian elephants have more muscle coordination and can perform more complex tasks.<ref>Template:Cite book</ref>
Cows usually lack tusks; if tusks—in that case, called "tushes"—are present, they are barely visible and only seen when the mouth is open.<ref>Template:Cite journal</ref> The enamel plates of the molars are greater in number and closer together in Asian elephants.<ref>Template:Cite journal</ref> Some bulls may also lack tusks; these individuals are called "makhnas" and are especially common among the Sri Lankan elephant population.<ref>{{#invoke:citation/CS1|citation
|CitationClass=web }}</ref> A tusk from an Template:Convert tall elephant killed by Sir Victor Brooke measured Template:Convert in length, and nearly Template:Convert in circumference, and weighed Template:Convert. This tusk's weight is, however, exceeded by the weight of a shorter tusk of about Template:Convert in length, which weighed Template:Convert, and there have reportedly been tusks weighing over Template:Convert.<ref name=lydekker/>
Skin colour is usually grey, and may be masked by soil because of dusting and wallowing. Their wrinkled skin is movable and contains many nerve centres. It is smoother than that of African elephants and may be depigmented on the trunk, ears, or neck. The epidermis and dermis of the body average Template:Convert thick; skin on the dorsum is Template:Convert thick providing protection against bites, bumps, and adverse weather. Its folds increase surface area for heat dissipation. They can tolerate cold better than excessive heat. Skin temperature varies from Template:Convert. Body temperature averages Template:Convert.<ref name=Shoshani82/>
SizeEdit
On average, when fully-grown, bulls are about Template:Convert tall at the shoulder and Template:Convert in weight, while cows are smaller at about Template:Convert at the shoulder and Template:Convert in weight.<ref name=probos_mass>Template:Cite journal</ref><ref name=Sukumar>Template:Cite journal</ref><ref name=Kurt>Template:Cite journal</ref> Sexual dimorphism in body size is relatively less pronounced in Asian elephants than in African bush elephants; with bulls averaging 15% and 23% taller in the former and latter respectively.<ref name=probos_mass/> Length of body and head including trunk is Template:Convert with the tail being Template:Convert long.<ref name=Shoshani82/> The largest bull elephant ever recorded was shot by the Maharajah of Susang in the Garo Hills of Assam, India, in 1924, it weighed an estimated Template:Convert, stood Template:Convert tall at the shoulder and was Template:Convert long from head to tail.<ref name=probos_mass/><ref>Template:Cite journal</ref><ref name=Wood>Template:Cite book</ref> The Raja Gaj elephant of Bardia National Park was estimated to be Template:Cvt tall at the shoulder and one of the biggest Asian bull elephants.<ref>Template:Cite journal</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref name=foc>World's Largest Asian Elephant May Be Dead</ref> There are reports of larger individuals as tall as Template:Convert.<ref name=lydekker>Template:Cite book</ref>
Distribution and habitatEdit
Asian elephants are distributed throughout the Indian subcontinent and Southeast Asia, from India in the west, to Borneo in the east, and Nepal in the north, to Sumatra in the south.<ref name=MSOF/> They inhabit grasslands, tropical evergreen forests, semi-evergreen forests, moist deciduous forests, dry deciduous forests and dry thorn forests, in addition to cultivated and secondary forests and scrublands. Over this range of habitat types elephants occur from sea level to over Template:Cvt. In the eastern Himalaya in northeast India, they regularly move up above Template:Cvt in summer at a few sites.<ref name=Choudhury99>Template:Cite journal</ref>
In Bangladesh, some isolated populations survived in the south-east Chittagong Hills in the early 1990s.<ref name=sukumar93>Template:Cite book</ref> In Malaysia's northern Johor and Terengganu National Park, two Asian elephants tracked using satellite tracking technology spent most of their time in secondary or "logged-over forest"; they travelled 75% of their time in an area less than Template:Cvt away from a water source.<ref>Template:Cite journal</ref> In China, the Asian elephant survives only in the prefectures of Xishuangbanna, Simao and Lincang of southern Yunnan. Template:As of, the estimated population was around 300 individuals.<ref name="ECNS"/>
As of 2017, the estimated wild population in India account for nearly three-fourths of the extant population, at 27,312 individuals.<ref>Template:Cite news</ref> In 2019, the Asian elephant population in India increased to an estimated 27,000–29,000 individuals.<ref>Template:Cite journal</ref><ref>Template:Cite journal</ref> Template:As of, the global wild population was estimated at 48,323–51,680 individuals.<ref name="Menon 2019">Template:Cite journal</ref>
- Tuskercorbett.jpg
A Tusker elephant at Jim Corbett National Park, Uttarakhand, India
- Male Elephant Tusker Nagarhole Karnataka Apr22 D72 23736.jpg
Elephant with large tusk in Nagarhole National Park, Karnataka, India
- Beautiful Corbett Park.jpg
India has more than 50% of the wild Asian elephant population. Pictured are herds at Jim Corbett National Park
Ecology and behaviourEdit
Asian elephants are crepuscular.<ref name="Shoshani82"/> They are classified as megaherbivores and consume up to Template:Convert of plant matter per day.<ref>Template:Cite journal</ref> Around 50 to 75% of the day is devoted to eating.<ref>Template:Cite journal</ref> They are generalist feeders, and are both grazers and browsers. They are known to feed on at least 112 different plant species, most commonly of the order Malvales, as well as the legume, palm, sedge and true grass families.<ref>Template:Cite journal</ref> They browse more in the dry season with bark constituting a major part of their diet in the cool part of that season.<ref>Template:Cite journal</ref> They drink at least once a day and are never far from a permanent source of fresh water.<ref name="Shoshani82"/> They need 80–200 litres of water a day and use even more for bathing. At times, they scrape the soil for clay or minerals.<ref>Template:Cite journal</ref><ref>Template:Cite journal</ref>
Cows and calves move about together as groups, while bulls disperse from their mothers upon reaching adolescence. Bulls are solitary or form temporary "bachelor groups".<ref name="McKay1973">Template:Cite journal</ref> Cow-calf units generally tend to be small, typically consisting of three adults (most likely related females) and their offspring.<ref>Template:Cite journal</ref> Larger groups of as many as 15 adult females have also been recorded.<ref name="deSilva1">Template:Cite journal</ref> Seasonal aggregations of 17 individuals including calves and young adults have been observed in Sri Lanka's Uda Walawe National Park. Until recently, Asian elephants, like African elephants, were thought to be under the leadership of older adult females, or matriarchs. It is now recognized that cows form extensive and very fluid social networks, with varying degrees of associations between individuals.<ref name="deSilva2">Template:Cite journal</ref> Social ties generally tend to be weaker than in African bush elephants.<ref name="deSilva1"/> Unlike African elephants, which rarely use their forefeet for anything other than digging or scraping soil, Asian elephants are more agile at using their feet in conjunction with the trunk for manipulating objects. They can sometimes be known for their violent behavior.<ref name="Clutton-Brock"/>
Asian elephants are recorded to make three basic sounds: growls, squeaks and snorts. Growls in their basic form are used for short distance communication. During mild arousal, growls resonate in the trunk and become rumbles while for long-distance communication, they escalate into roars. Low-frequency growls are infrasonic and made in many contexts. Squeaks come in two forms: chirpings and trumpets. Chirping consists of multiple short squeaks and signals conflict and nervousness. Trumpets are lengthened squeaks with increased loudness and are produced during extreme arousal. Snorts signal changes in activity and increase in loudness during mild or strong arousal. During the latter case, when an elephant bounces the tip of the trunk, it creates booms which serve as threat displays.<ref name=Sukumar2003>Template:Cite book</ref> Elephants can distinguish low-amplitude sounds.<ref>Template:Cite journal</ref>
Rarely, tigers have been recorded attacking and killing calves, especially if the calves become separated from their mothers, stranded from their herd, or orphaned. Adults are largely invulnerable to natural predation. There is a singular anecdotal case of a mother Asian elephant allegedly being killed alongside her calf; however, this account is contestable.<ref>Template:Cite journal</ref><ref>Template:Cite news</ref> In 2011 and 2014, two instances were recorded of tigers successfully killing adult elephants; one by a single tiger in Jim Corbett National Park on a 20-year-old young adult elephant cow, and another on a 28-year-old sick adult bull in Kaziranga National Park further east, which was taken down and eaten by several tigers hunting cooperatively.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> Elephants appear to distinguish between the growls of larger predators like tigers and smaller predators like leopards; they react to leopards less fearfully and more aggressively.<ref>Template:Cite journal</ref>
ReproductionEdit
Reproduction in Asian elephants can be attributed to the production and perception of signaling compounds called pheromones. These signals are transmitted through various bodily fluids. They are commonly released in urine but in males they are also found in special secretions from the temporal glands.<ref>Template:Cite journal</ref> Once integrated and perceived, these signals provide the receiver with information about the reproductive status of the sender. If both parties are ready to breed, reproductive ritualic behavior occurs and the process of sexual reproduction proceeds.<ref name="Schulte">Template:Cite journal</ref>
Bulls will fight one another to get access to oestrus cows. Strong fights over access to females are extremely rare. Bulls reach sexual maturity around the age of 12–15. Between the ages of 10 and 20 years, bulls undergo an annual phenomenon known as "musth". This is a period where the testosterone level is up to 100 times greater than non-musth periods, and they become aggressive. Secretions containing pheromones occur during this period, from the paired temporal glands located on the head between the lateral edge of the eye and the base of the ear.<ref>Template:Cite journal</ref> The aggressive behaviors observed during musth can be attributed to varying amounts of frontalin (1,5-dimethyl-6,8-dioxabicyclo[3.2.1]octane) throughout the maturation process of bulls. Frontalin is a pheromone that was first isolated in bark beetles but can also be produced in the bulls of both Asian and African Elephants. The compound can be excreted through urine as well as through the temporal glands of the bull, allowing signaling to occur. During musth, increased concentrations of frontalin in the bull's urine communicate the reproductive status of the bull to female elephants.<ref name="Rasmussen">Template:Cite journal</ref>
Similar to other mammals, hormone secretion in female elephants is regulated by an estrous cycle. This cycle is regulated by surges in Luteinizing hormone that are observed three weeks from each other. This type of estrous cycle has also been observed in African Elephants but is not known to affect other mammals. The first surge in Luteinizing hormone is not followed by the release of an egg from the ovaries.<ref>Template:Cite journal</ref> However, some female elephants still exhibit the expected mating protocols during this surge. Female elephants give ovulatory cues by utilizing sex pheromones. A principal component thereof, (Z)-7-dodecen-1-yl acetate, has also been found to be a sex pheromone in numerous species of insects.<ref>Template:Cite journal</ref><ref>Template:Cite journal</ref> In both insects and elephants, this chemical compound is used as an attractant to assist the mating process. In elephants, the chemical is secreted through urination and this aids in the attraction of bulls to mate. Once detected, the chemical stimulates the vomeronasal organ of the bull, thus providing information on the maturity of the female.<ref>Template:Cite journal</ref>
Reproductive signaling exchange between male and female elephants are transmitted through olfactory cues in bodily fluids.<ref name="Schulte"/> In males, the increase in frontalin during musth heightens their sensitivity to the (Z)-7-dodecen-1-yl acetate produced by female elephants.<ref name="Rasmussen"/> Once perceived by receptors in the trunk, a sequence of ritualistic behaviors follow. The responses in males vary based on both the stage of development and the temperament of the elephant.<ref name="Schulte"/> This process of receiving and processing signals through the trunk is referred to as flehmen. The difference in body movements give cues to gauge if the male is interested in breeding with the female that produced the secretion.<ref name="Bruce">Template:Cite journal</ref> A bull that is ready to breed will move closer to the urine and in some cases an erection response is elicited. A bull that is not ready to breed will be timid and try to dissociate themselves from the signal.<ref name="Schulte"/> In addition to reproductive communication, chemosensory signaling is used to facilitate same-sex interactions. When less developed males detect pheromones from a male in musth, they often retreat to avoid coming in contact with aggressive behaviors. Female elephants have also been seen to communicate with each other through pheromone in urine.<ref name="Schulte"/> The purpose of this type of intrasex communication is still being investigated. However, there are clear differences in signaling strength and receiver response throughout different stages of the estrous cycle.<ref name="Bruce"/>
The gestation period is 18–22 months, and the cow gives birth to one calf, only occasionally twins. The calf is fully developed by the 19th month, but stays in the womb to grow so that it can reach its mother to feed. At birth, the calf weighs about Template:Convert, and is suckled for up to three years. Once a female gives birth, she usually does not breed again until the first calf is weaned, resulting in a four to five-year birth interval.<ref>Template:Cite journal</ref><ref>Template:Cite book</ref> During this period, mother to calf communication primarily takes place through temporal means. However, male calves have been known to develop sex pheromone-producing organs at a young age. Early maturity of the vomeronasal organ allows immature elephants to produce and receive pheromones.<ref>Template:Cite journal</ref> It is unlikely that the integration of these pheromones will result in a flehmen response in a calf.<ref name="Bruce"/> Females stay on with the herd, but mature males are chased away.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
Female Asian elephants sexually mature around the age of 10~15 and keep growing until 30, while males fully mature at more than the age of 25, and constantly grow throughout their life.<ref>Template:Cite journal</ref><ref>Template:Cite journal</ref> Average elephant life expectancy is approximately 60 years.<ref name="Shoshani82"/> Some individuals are known to have lived into their late 80s.<ref name="BBC">Template:Cite news</ref> Generation length of the Asian elephant is 22 years.<ref>Template:Cite journal</ref>
- 2005-tusker-musth-crop.jpg
An asian elephant bull in "musth", a period when testosterone levels run high and pheromones are secreted from temporal glands
- Tussle of tuskers.jpg
Friendly tussle of tuskers at Dhikala grassland in Jim Corbett National Park
- Two-Elephants.JPG
Courtship between a male and female Asian elephant in the Coimbatore Forests, Tamil Nadu
- Baby elephants at the Elephant Conservation Center (Laos).jpg
Two Asian elephant calves playing in a sanctuary in Laos
IntelligenceEdit
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Asian elephants have a very large and highly developed neocortex, a trait also shared by humans, apes and certain dolphin species. They have a greater volume of cerebral cortex available for cognitive processing than all other existing land animals. Results of studies indicate that Asian elephants have cognitive abilities for tool use and tool-making similar to great apes.<ref>Template:Cite journal</ref> They exhibit a wide variety of behaviours, including those associated with grief, learning, allomothering, mimicry, play, altruism, use of tools, compassion, cooperation, self-awareness, memory, and language.<ref>Template:Cite journal</ref> Elephants reportedly head to safer ground during natural disasters like tsunamis and earthquakes, but data from two satellite-collared Sri Lankan elephants indicate this may be untrue.<ref>Template:Cite journal</ref> Several students of elephant cognition and neuroanatomy are convinced that Asian elephants are highly intelligent and self-aware.<ref>Template:Cite journal</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref>Template:Cite book</ref> Others contest this view.<ref>Template:Cite book</ref><ref>Template:Cite journal</ref>
ThreatsEdit
The pre-eminent threats to the Asian elephant today are the loss, degradation and fragmentation of its habitat, which leads to increasing conflicts between humans and elephants. Asian elephants are poached for ivory and a variety of other products including meat and leather.<ref name="MSOF" /> The demand for elephant skin has risen due to it being an increasingly-common ingredient in traditional Chinese medicine.<ref>Template:Cite journal</ref><ref>Template:Cite journal</ref>
Human–elephant conflictEdit
In some parts of Asia, people and elephants have co-existed for thousands of years.<ref>Template:Cite journal</ref> In other areas, people and elephants come into conflict, resulting in violence, and ultimately, the displacement of elephants.<ref>Template:Cite journal</ref> The main causes of human-elephant conflict includes the growing human population, large-scale development projects and poor top-down governance. Proximate causes includes habitat loss due to deforestation, disruption of elephant migratory routes, expansion of agriculture and illegal encroachment into protected areas.<ref name=Barua2010>Template:Cite journal</ref>
Destruction of forests through logging, encroachment, slash-and-burn, shifting cultivation, and monoculture tree plantations are major threats to the survival of elephants. Human–elephant conflicts occur when elephants raid crops of shifting cultivators in fields, which are scattered over a large area interspersed with forests. Depredation in human settlements is another major area of human–elephant conflict occurring in small forest pockets, encroachments into elephant habitat, and on elephant migration routes.<ref name="Choudhury2003">Template:Cite journal</ref> However, studies in Sri Lanka indicate that traditional slash-and-burn agriculture may create optimal habitats for elephants by creating a mosaic of successional-stage vegetation. Populations inhabiting small habitat fragments are much more liable to come into conflict with humans.<ref>Template:Cite journal</ref>
Development such as border fencing along the India–Bangladesh border has become a major impediment to the free movement of elephants.<ref>Template:Cite journal</ref> In Assam, more than 1,150 humans and 370 elephants died as a result of human-elephant conflict between 1980 and 2003.<ref name=Choudhury2003/> In a 2010 study, it was estimated that in India alone, over 400 people were killed by elephants each year, and 0.8 to 1 million hectares were damaged, affecting at least 500,000 families across the country.<ref name=Rangarajan2010>Rangarajan, M., Desai, A., Sukumar, R., Easa, P. S., Menon, V., Vincent, S., Ganguly, S., Talukdar, B. K., Singh, B., Mudappa, D., Chowdhary, S., Prasad, A. N. (2010). Gajah: Securing the future for elephants in India Template:Webarchive. Report of the Elephant Task Force. Ministry of Environment and Forests, New Delhi.</ref><ref>Choudhury, A. (2004). Human–elephant conflicts in Northeast India. Human Dimensions of Wildlife, 9(4), 261–270. {{#invoke:doi|main}}</ref><ref>Template:Citation</ref> Moreover, elephants are known to destroy crops worth up to US$2–3 million annually.<ref name=Bist2006>Template:Cite journal</ref> This has major impacts on the welfare and livelihoods of local communities, as well as the future conservation of this species.<ref name=Barua2010/> In countries like Bangladesh and Sri Lanka, the Asian elephant is one of the most feared wild animals, even though they are less deadly than other local animals such as venomous snakes (which were estimated to claim more than 30 times more lives in Sri Lanka than elephants).<ref>Raihan Sarker, A. H. M., & Røskaft, E. (2010). Human–wildlife conflicts and management options in Bangladesh, with special reference to Asian elephants (Elephas maximus). International Journal of Biodiversity Science, Ecosystem Services & Management, 6(3–4), 164–175. {{#invoke:doi|main}}</ref><ref>Template:Cite journal</ref>
As a whole, Asian elephants display highly sophisticated and sometimes unpredictable behaviour. Most untamed elephants try to avoid humans, but if they are caught off guard by any perceived physical threat, including humans, they will likely charge. This is especially true of males in musth and of females with young. Gunfire and other similar methods of deterring, which are known to be effective against many kinds of wild animals including tigers, may or may not work with elephants, and can even worsen the situation. Elephants that have been abused by humans in the past often become "rogue elephants", which regularly attack people with no provocation.<ref>Hoare, R. E. (1999). Determinants of human–elephant conflict in a land-use mosaic. Journal of applied ecology, 36(5), 689–700. {{#invoke:doi|main}}</ref><ref>Rasmussen, L. E. L. (1999). Evolution of chemical signals in the Asian elephant, Elephas maximus: behavioural and ecological influences. Journal of Biosciences, 24(2), 241–251. {{#invoke:doi|main}}</ref><ref>Sukumar, R. (1995). "Elephant raiders and rogues". Natural History, 104(7), 52–61.</ref>
PoachingEdit
For ivoryEdit
The demand for ivory during the 1970s and 1980s, particularly in East Asia, led to rampant poaching and the serious decline of elephants in both Africa and Asia. In Thailand, the illegal trade in live elephants and ivory still flourishes. Although the amount of ivory being openly sold has decreased substantially since 2001, Thailand still has one of the largest and most active black markets for ivory seen anywhere in the world. Tusks from Thai-poached elephants also enter the market; between 1992 and 1997 at least 24 male elephants were killed for their tusks.<ref name=Stiles2009>Stiles, D. (2009). The elephant and ivory trade in Thailand. Template:Webarchive TRAFFIC Southeast Asia, Petaling Jaya, Selangor, Malaysia.</ref>
Up to the early 1990s, Vietnamese ivory craftsmen used exclusively Asian elephant ivory from Vietnam and neighbouring Lao and Cambodia. Before 1990, there were few tourists and the low demand for worked ivory could be supplied by domestic elephants. Economic liberalisation and an increase in tourism raised both local and visitors' demands for worked ivory, which resulted in heavy poaching.<ref>Template:Cite journal</ref>
For skinEdit
The skin of the Asian elephant is used as an ingredient in Chinese medicine as well as in the manufacture of ornamental beads. The practice has been aided by China's State Forestry Administration (SFA), which has issued licences for the manufacture and sale of pharmaceutical products containing elephant skin, thereby making trading legal. In 2010, four skinned elephants were found in a forest in Myanmar; 26 elephants were killed by poachers in 2013 and 61 in 2016. According to the NGO Elephant Family, Myanmar is the main source of elephant skin, where a poaching crisis has developed rapidly since 2010.<ref>Template:Cite report</ref>
DiseaseEdit
The elephant endotheliotropic herpesvirus (EEHV) is a member of the Proboscivirus genus, a novel clade most closely related to the mammalian betaherpesviruses. As of 2011, it is responsible for as many as 70 deaths of both zoo and wild Asian elephants worldwide, especially in young calves.<ref>Template:Cite journal</ref><ref>Template:Cite journal</ref> In particular, several incidents of calves dying from elephant endotheliotropic herpesvirus have been recorded in Myanmar.<ref>Template:Cite journal</ref> The elephant schistosome is a parasitic trematode that uses the Asian elephant as a definitive host. Two other hosts may be the Indian elephant and the greater one-horned rhinoceros.<ref>Template:Cite journal</ref>
ConservationEdit
The Asian elephant is listed on CITES Appendix I.<ref name="CITES"/> It is a quintessential flagship species, deployed to catalyze a range of conservation goals, including habitat conservation at landscape scales, generating public awareness on conservation issues, and mobilisation as a popular cultural icon both in India and the West.<ref name="Bowen Jones">Template:Cite journal</ref><ref name="Barua Mutiny">Template:Cite journal</ref><ref name=Barua2010/> A key aspect of conservation is connectivity of the preferred movement routes of Asian elephants through areas with high vegetation cover and low human population density.<ref>Template:Cite journal</ref>
The World Elephant Day is celebrated annually on 12 August since 2012. Events are organized to divulge information and to engage people about the problems that the Asian elephant is facing.<ref name="The Atlantic">Template:Cite news</ref> August has been established as the Asian Elephant Awareness Month by zoos and conservation partners in the United States.<ref name=OKC>Template:Cite news</ref>
Karnataka state in India hosts the most Asian elephants of any known area, comprising around 20% of the total population in the country. The distribution of elephants in the state according to one estimate is roughly Template:Cvt.<ref>Template:Cite journal</ref> In a 2013 study, an estimated 10, 000 elephants inhabited the Western Ghats, and were primarily threatened by poaching and habitat fragmentation. An increase in conflict with humans was also cited as a likely issue. Conservation plans aimed to establish wildlife corridors, stop poaching of bulls, and protect or manage land area.<ref>Template:Cite journal</ref> Project Elephant was initiated in 1992 as a Centrally Sponsored Scheme (CSS) by the Ministry of Environment, Forest and Climate Change of the Government of India. The project was initiated to protect the Indian elephant and its habitats and to establish dedicated elephant reserves for sustaining elephant populations.<ref name="PE">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
The distribution of elephants in Sri Lanka is only two-fifths of what it was in the late 19th and early 20th centuries. Due to this decrease, interactions with humans occur much more frequently. During a 2003 survey, the local people expressed some form of disapproval towards the conservation of Asian elephants as farmers viewed them as pests, however, most of the participants were supportive of the idea.<ref>Template:Cite journal</ref>
In China, Asian elephants are under first-level protection. Yunnan province has 11 national and regional nature reserves. In total, the covered protected area in China is about Template:Cvt. In 2020, the population of Asian elephants in Yunnan was estimated at around 300 individuals. As conflicts between humans and wild elephants have emerged around protected areas in the last years, the prefecture of Xishuangbanna built food bases and planted bananas and bamboo to create a better habitat.<ref name="ECNS">Template:Cite news</ref>
In Thailand, Salakpra Wildlife Sanctuary and Tham Than Lot National Park are protected areas hosting around 250–300 elephants, according to figures from Template:As of.<ref>Template:Cite news</ref> In recent years the National Park has faced issues due to encroachment and over-exploitation.<ref>Template:Cite report</ref> In India, the National Board of Wildlife recommended to allow coal mining in Dehing Patkai National Park in April 2020. The decision raised concerns between students and environmental activists who launched an online campaign to stop the project.<ref name="hindustan">Template:Cite news</ref>
In captivityEdit
About half of the global zoo elephant population is kept in European zoos, where they have less than half (18.9 years) the median life span of conspecifics (41.6 years) in protected populations in range countries. This discrepancy is clearest in Asian elephants: infant mortality is more than two to three times that seen in Burmese timber camps, and adult survivorship in zoos has not improved significantly in recent years. One risk factor for Asian zoo elephants is being moved between institutions, with early removal from the mother tending to have additional adverse effects. Another risk factor is being born into a zoo rather than being imported from the wild, with poor adult survivorship in zoo-born Asians apparently being conferred prenatally or in early infancy. Likely causes for compromised survivorship is stress and/or obesity.<ref>Template:Cite journal</ref> Foot problems are commonly observed in captive elephants. These are related to lack of exercise, long hours standing on hard substrates, and contamination resulting from standing in their dung. Many of these problems are treatable. However, mistreatment may lead to serious disability or death.<ref>Template:Cite book</ref>
Demographic analysis of captive Asian elephants in North America indicates that the population is not self-sustaining. First year mortality is nearly 30 per cent, and fecundity is extremely low throughout the prime reproductive years.<ref>Template:Cite journal</ref> Data from North American and European regional studbooks from 1962 to 2006 were analysed for deviations in the birth and juvenile death sex ratios. Of 349 captive calves born, 142 died prematurely. They died within one month of birth, major causes being stillbirth and infanticide by either the calf's mother or by one of the exhibition mates. The sex ratio of stillbirths in Europe was found to have a tendency for excess of males.<ref>Template:Cite journal</ref>
Handling methodsEdit
Young elephants are captured from the wild and illegally imported to Thailand from Myanmar for use in the tourism industry; calves are used mainly in amusement parks and are trained to perform various stunts for tourists.<ref name=Stiles2009/> The calves are often subjected to a 'breaking in' process, which may involve being tied up, confined, starved, beaten and tortured; as a result, two-thirds may perish.<ref name=guard120724>Template:Cite news</ref> Handlers use a technique known as the training crush, in which "handlers use sleep-deprivation, hunger, and thirst to 'break' the elephants' spirit and make them submissive to their owners"; moreover, handlers drive nails into the elephants' ears and feet.<ref name=Hile>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
In cultureEdit
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The Asian elephant is the national animal of Thailand and Laos.<ref>Template:Cite journal</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> It has also been declared as the national heritage animal of India.<ref>Template:Cite journal</ref> Bones of Asian elephants excavated at Mohenjo-daro in the Indus Valley indicate that they were tamed in the Indus Valley Civilisation and used for work. Decorated elephants are also depicted on seals and were modelled in clay.<ref>Template:Cite book</ref> The Asian elephant became a siege engine, a mount in war, a status symbol, a beast of burden, and an elevated platform for hunting during historical times in South Asia.<ref name="IWH3">Template:Cite book</ref>
Asian elephants have been captured from the wild and tamed for use by humans. Elephants can remember tone, melody, and words, allowing them to recognise more than 20 verbal commands.<ref>Template:Cite book</ref> Their ability to work under instruction makes them particularly useful for carrying heavy objects. They have been used particularly for timber-carrying in jungle areas. Other than their work use, they have been used in war, in ceremonies, and for carriage.<ref>Template:Cite journal</ref> It is reported that war elephants are still used by the Kachin Independence Army (KIA) in Kachin State in northern Myanmar against Myanmar's military. The KIA use about four dozen elephants to carry supplies.<ref>Template:Cite news</ref>
The Asian elephant plays an important part in the culture of the subcontinent and beyond, being featured prominently in the Panchatantra fables and the Buddhist Jataka tales. They play a major role in Hinduism: the god Ganesha's head is that of an elephant, and the "blessings" of a temple elephant are highly valued. Elephants are frequently used in processions where the animals are adorned with festive outfits.<ref name="Nila">Template:Cite book</ref>
The Asian elephant is depicted in several Indian manuscripts and treatises with notable amongst these including Matanga Lila (elephant sport) of Nilakantha.<ref name="Nila"/> The manuscript Hastividyarnava is from Assam in northeast India.<ref>Template:Cite book</ref> In the Burmese, Thai and Sinhalese animal and planetary zodiac, the Asian elephant, both tusked and tuskless, are the fourth and fifth animal zodiacs of the Burmese, the fourth animal zodiac of the Thai, and the second animal zodiac of the Sinhalese people of Sri Lanka.<ref>Template:Cite book</ref><ref>Template:Cite journal</ref> Similarly, the elephant is the twelfth animal zodiac in the Dai animal zodiac of the Dai people in southern China.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
See alsoEdit
- Elephants in Thailand
- Endangered species
- Ivory trade
- Khedda
- List of individual elephants
- Mela shikar
- War elephant
- White elephant
ReferencesEdit
BibliographyEdit
Further readingEdit
External linksEdit
- Save Elephant Foundation
- International Elephant Foundation
- Template:Usurped
- Asian Elephants at the Zoological Gardens of the World
- Elephant Information Repository (Template:Webarchive)
- WWF—Asian elephant species profile
- National Zoo Facts on Asian Elephant and a Webcam of the Asian Elephant exhibit
- Environmental Investigation Agency: "Illegal Wildlife Trade: Elephants"
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