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| Elephas maximus Linnaeus, 1758 |
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 Asian Elephant range
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The Asian or Asiatic Elephant (Elephas maximus), sometimes known by the name of one of its subspecies – the Indian Elephant, is one of the three living species of elephant, and the only living species of the genus Elephas. Carl Linnaeus (Latinized as Carolus Linnaeus, also known after his ennoblement as, May 23 new style (13 May old style 1707 who laid the foundations for The Indian Elephant, Elephas maximus indicus, is one of four Subspecies of the Asian Elephant, the largest population of which is found in India In Biology, a species is one of the basic units of Biological classification and a Taxonomic rank. Elephants ( family: Elephantidae) are large land Mammals of the order Proboscidea. Elephas is one of two surviving genera in the order of Elephants Proboscidea. It is the largest living land animal in Asia. The species is found primarily in large parts of Bangladesh, India, Sri Lanka, Indochina and parts of Indonesia. ( Bengali: বাংলাদেশ inc-Latn Bangladesh) officially India, officially the Republic of India (भारत गणराज्य inc-Latn Bhārat Gaṇarājya; see also other Indian languages) is a country Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka ( Sinhalese:, இலங்கை known as Ceylon before 1972 is an Island Indochina, or the Indochinese Peninsula, is a region in Southeast Asia. The Republic of Indonesia ( (Republik Indonesia is a Country in Southeast Asia. It is considered endangered, with between 25,600 and 32,750 left in the wild. An endangered species is a population of an organism which is at risk of becoming Extinct because it is either few in numbers or threatened by changing environmental or predation [3]
This animal is widely domesticated, and has been used in forestry in South and Southeast Asia for centuries and also in ceremonial purposes. Domestication (from Latin domesticus) refers to the process whereby a Population of Animals Forestry is the Art and Science of managing forests tree Plantations and related Natural resources. A ceremony is an activity infused with Ritual significance performed on a special occasion Historical sources indicate that they were sometimes used during the harvest season primarily for milling. Wild elephants attract tourist money to the areas where they can most readily be seen, but damage crops, and may enter villages to raid gardens. Tourism is Travel for Recreational or Leisure purposes The World Tourism Organization defines tourists as people who "travel
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Description
The Asian elephant is smaller than its African relatives; the easiest way to distinguish the two is that the Asian elephant has smaller ears. African elephants are the species of Elephants in the Genus Loxodonta, one of the two existing genera in Elephantidae. The ear is the sense organ that detects Sounds The Vertebrate ear shows a common biology from Fish to Humans with variations The Asian Elephant tends to grow to around two to four meters (7–12 feet) in height and 3,000–5,000 kilograms (6,500–11,000 pounds) in weight. The metre or meter is a unit of Length. It is the basic unit of Length in the Metric system and in the International A foot (plural feet or foot; symbol or abbreviation ft or sometimes &prime – the prime symbol) is a non-SI unit The pound or pound-mass (abbreviation lb, lbm, or sometimes in the United States #) is a unit of Mass
The Asian Elephant has other differences from its African relatives, including a more arched back than the African, one semi-prehensile "finger" at the tip of its trunk as opposed to two, four nails on each hind foot instead of three, and 19 pairs of ribs instead of 21. Also, unlike the African elephant, the female Asian Elephant usually lacks tusks; if tusks — in that case called "tushes" — are present, they are barely visible, and only seen when the female opens her mouth. A tusk is an extremely long Incisor Tooth of certain Mammals that protrudes when the Mouth is closed The enamel plates of the molars are greater in number and closer together in Asian elephants. Tooth enamel is the hardest and most highly mineralized substance of the body and with Dentin, Cementum, and dental pulp is one of the four major Molars are the rearmost and most complicated kind of Tooth in most Mammals In many mammals they grind food hence the Latin name mola, " Millstone [4] Some males may also lack tusks; these individuals are called "makhnas", and are especially common among the Sri Lankan elephant population. Furthermore, the forehead has two hemispherical bulges, unlike the flat front of the African elephant. Unlike African elephants which rarely use their forefeet for anything other than digging or scrapig soil, Asian elephants are more agile at using their feet in conjunction with the trunk for manipulating objects. [4]
Size
The sizes of elephants in the wild have been exaggerated in the past. However, record elephants may have measured as high as 12 feet at the shoulder. Height is often estimated using the rule of thumb of twice the forefoot circumference. A rule of thumb is a principle with broad application that is not intended to be strictly accurate or reliable for every situation [5]
The height of the adult male does not exceed nine feet, and that of the female eight feet; but these dimensions are occasionally considerably exceeded. George P. Sanderson measured a male standing nine feet seven inches at the shoulder, and measuring twenty-six feet two and one-half inches from the tip of the trunk to the extremity of the tail; and he records others respectively reaching nine feet eight inches and nine feet ten inches at the shoulder. George Peress Sanderson was born in India in 1848 the son of Rev An elephant shot by General Kinloch stood upward of ten feet one inch; and another measured by Sanderson ten feet seven and one-half inches. These dimensions are, however, exceeded by a specimen killed by the late Sir Victor Brooke, which is reported to have reached a height of eleven feet: and there is a rumor of a Ceylon elephant of twelve feet. That such giants may occasionally exist is indicated by a skeleton in the Museum at Calcutta, which is believed to have belonged to an individual living between 1856 and 1860 in the neighborhood of the Rajamahal hills, in Bengal. As now mounted this enormous skeleton stands eleven feet three inches at the shoulders, but Mr. O. S. Fraser, in a letter to the Asian newspaper, states that it is made to stand too low, and that its true height was several inches more. If this be so, there can be no doubt that, when alive, this elephant must have stood fully twelve feet.
—Lydekker, 1894 [5]
A record tusk described by George P. Sanderson measured five feet along the curve, with a girth of sixteen inches at the point of emergence from the jaw, the weight being one hundred and four and one-half pounds. This was from an elephant killed by Sir V. Brooke and measured eight feet in length, and nearly seventeen inches in circumference, and weighed ninety pounds. This tusk's weight is, however, exceeded by [the weight of] a shorter tusk of about six feet in length which weighed one hundred pounds. [5] The heaviest wild male recorded was shot by the Maharajah of Susang in the Garo Hills of Assam, India in 1924, and was 8 tonnes (8. The word Mahārāja (also spelled maharajah) is Sanskrit for "great king" or " High king " (a Karmadharaya from mahānt Assam) ( Assamese: অসম Ôxôm) is a northeastern state of India with its capital at Dispur, a suburb of the city India, officially the Republic of India (भारत गणराज्य inc-Latn Bhārat Gaṇarājya; see also other Indian languages) is a country 8 short tons), 3. 35 m (11. 1 ft) tall and 8. 06 m (26. 6 ft) long. [6]
Behaviour
In the wild, elephant herds follow well-defined seasonal migration routes. The Oregon Zoo, formerly the Washington Park Zoo, is a Zoo two miles (3 km west southwest of downtown Portland Oregon in Portland's Washington These are made around the monsoon seasons, often between the wet and dry zones, and it is the task of the eldest elephant to remember and follow the traditional migration routes. A monsoon is a seasonal prevailing wind which lasts for several months When human farms are founded along these old routes there is often considerable damage done to crops, and it is common for elephants to be killed in the ensuing conflicts.
Elephants life spans have been exaggerated in the past and live on average for 60 years in the wild and 80 in captivity. [7] They eat 10% of their body weight each day, which for adults is between 170-200 kilograms of food per day. They need 80–200 litres of water a day, and use more for bathing. They sometimes scrape the soil for minerals. A mineral is a naturally occurring substance formed through geological processes that has a characteristic chemical composition a highly ordered atomic structure and specific
Elephants use infrasound to communicate; this was first noted by the Indian naturalist M. Krishnan and later studied by Katherine Payne. Infrasound is Sound with a Frequency too low to be heard by the human Ear. Madhaviah Krishnan (மாதவையா கிருஷ்ணன் better known as M [8]
Female behavior
Female elephants live in small groups. The Indian Elephant, Elephas maximus indicus, is one of four Subspecies of the Asian Elephant, the largest population of which is found in India Jim Corbett National Park —named after the hunter and naturalist Jim Corbett who played a key role in its establishment—is the oldest National park in India, officially the Republic of India (भारत गणराज्य inc-Latn Bhārat Gaṇarājya; see also other Indian languages) is a country They have a matriarchal society, and the group is led by the oldest female. Matriarchy is a term which is applied to gynocentric form of Society, in which the leading role is by the Female and especially by the Mothers The herd consists of relatives. An individual reaches sexual maturity at 9-15 years of age. Sexual maturity is the age or stage when an Organism can reproduce. The gestation period is 18–22 months, and the female gives birth to one calf, or occasionally twins. The gestation period in a Viviparous Animal is the length of its Gestation. A calf (kɑːf plural calves, /kɑːvz/ is the young of various species of Mammal. Twins are Offspring resulting from the same Pregnancy, either of the same or opposite Sex. 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. The uterus (from the Latin word for womb) is the major Female reproductive organ of most Mammals including Humans One end the At birth, the calf weighs about 100 kg (220 lb), and is suckled for up to 2–3 years. Lactation describes the secretion of Milk from the Mammary glands the process of providing that milk to the young and the period of time that a Mother Females stay on with the herd, but mature males are chased away.
Females produce 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. [9][10]
Male behavior
Bull elephants are usually solitary, and fight over females during the breeding season. The breeding season is the most suitable season usually with favorable conditions and abundant food and water for breeding among some wild animals and birds (wildlife Younger bulls may form small groups. Males reach sexual maturity during their 15th year, after which they annually enter "musth". Musth (or alternatively spelled must is a periodic condition in bull Elephants characterized by a thick tar-like secretion called temporin from the temporal ducts This is a period where the testosterone level is high (up to 60 times greater) and they become extremely aggressive. Testosterone is a Steroid hormone from the Androgen group In mammals testosterone is primarily secreted in the testes of males and the Ovaries Secretions containing pheromones occur during this period, from the temporal glands on the forehead. A pheromone (from Greek φέρω phero "to bear" + ‘ορμόνη " Hormone " is a Chemical that triggers a natural
Danger
At most seasons of the year the Indian elephant is a timid animal, much more ready to flee from a foe than to make an attack. A mahout is a person who drives an Elephant. The word mahout comes from the Hindi words mahaut and mahavat, derivatives of the Sanskrit For the district with the same name see Thrissur district. Thrissur / Trichur / Trissur ( Malayalam: തൃശ്ശൂര് Kerala ( Malayalam: {{Kerala in Malayalam}}; Solitary rogues are, however, frequently an exception to this rule, and sometimes make unprovoked attacks on passers-by. Elephants ( family: Elephantidae) are large land Mammals of the order Proboscidea. Rogue elephant sometimes take up a position near a road, and make it impassable to travellers. Females with calves are at all times dangerous to approach. Contrary to what is stated to be the case with the African species, when an Indian elephant makes a charge, it does so with its trunk tightly curled up, and it makes its attack by trampling its victim with its feet or knees, or, if a male, by pinning it to the ground with its tusks. During musth the male elephant is highly dangerous, not only to human beings, but to its fellow animals. At the first indications of this, domestic elephants are secured tightly to prevent any mishaps;[5] xylazine is also used. Xylazine is a drug that is used for Sedation, Anesthesia, muscle relaxation and Analgesia in animals such as horses cattle and other large
While elephant charges are often displays of aggression that do not go beyond threats, some elephants, such as rogues, may actually attack.
In regard to movement on land, Mr. Sanderson says that "the only pace of the elephant is the walk, capable of being increased to a fast shuffle of about fifteen miles an hour for very short distances. George Peress Sanderson was born in India in 1848 the son of Rev It can neither trot, canter, nor gallop. It does not move with the legs on the same side together, but nearly so. A very good runner might keep out of an elephant's way on a smooth piece of turf, but on the ground in which they are generally met with, any attempt to escape by flight, unless supplemented by concealment, would be unavailing. "
When an elephant does charge, it requires all the coolness and presence of mind of the sportsman to avoid a catastrophe- "A grander animated object," writes Mr. Sanderson, "than a wild elephant in full charge can hardly be imagined. The cocked ears and broad forehead present an immense frontage; the head is held high, with the trunk curled between the tusks, to be uncoiled in the moment of attack; the massive fore-legs come down with the force and regularity of ponderous machinery; and the whole figure is rapidly foreshortened, and appears to double in size with each advancing stride. The trunk being curled and unable to emit any sound, the attack is made in silence, after the usual premonitory shriek, which adds to its impressiveness. The usual pictorial representations of the Indian elephant charging with upraised trunk are accordingly quite incorrect. "[5]
Captivity
Elephants have been captured from the wild and tamed for use by humans. 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. They have been used for their ability to travel over difficult terrain by hunters, for whom they served as mobile hunting platforms. The same purpose is met in safaris in modern times.
The first historical record of domestication of Asian elephants was in Harappan times. Ultimately the elephant went on to become a siege engine, a mount in war, a status symbol, a work animal, and an elevated platform for hunting during historical times in South Asia. [11]
The elephant plays an important part in the culture of the subcontinent and beyond, featuring prominently in Jataka tales and the Panchatantra. The Jātaka Tales ( Sanskrit जातक and Pali, Malay: jetaka Lao: satok refer to a voluminous body of Folklore -like literature The Panchatantra (also spelled Pañcatantra, in Sanskrit: पञ्चतन्त्र 'Five Principles' or Kalīleh o Demneh It plays 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. Hinduism is a religious tradition that originated in the Indian subcontinent. Ganesha ( Sanskrit: sa गणेश Gaṇeśa) also spelled Ganesa or Ganesh and also known as Ganapati, Vinayaka, and Pillaiyar Elephants have been used in processions in Kerala where the animals are adorned with festive outfits. Kerala ( Malayalam: {{Kerala in Malayalam}}; They were also used by almost all armies in India as war elephants, terrifying opponents unused to the massive beast. A war elephant is an Elephant trained and guided by humans for combat
Subspecies
Elephas maximus is the only surviving species in the Elephas genus, although several extinct fossil species of Elephas are known. Elephas is one of two surviving genera in the order of Elephants Proboscidea.
There are four subspecies of the Asian elephant:
- Indian Elephant (E. The Indian Elephant, Elephas maximus indicus, is one of four Subspecies of the Asian Elephant, the largest population of which is found in India m. indicus)
- Sri Lankan Elephant (E. The Sri Lankan Elephant ( Elephas maximus maximus) is the nominate Subspecies of the Asian Elephant and is the largest of the subspecies although smaller m. maximus)
- Sumatran Elephant (E. The Sumatran Elephant ( Elephas maximus sumatrensis) is a Subspecies of the Asian Elephant. m. sumatrensis)
- Borneo Elephant (E. The Borneo Elephant, also called the Borneo Pygmy Elephant, ( Elephas maximus borneensis) is a Subspecies of the Asian Elephant and found m. borneensis)
The population in Vietnam and Laos is undergoing tests to determine if it is a fifth subspecies. Vietnam (ˌviːɛtˈnɑːm Việt Nam) officially Laos (ˈlɑːoʊs or /ˈlaʊs/ officially the Lao People's Democratic Republic, is a Landlocked country in Southeast Asia, bordered by Burma
E. m. indicus survives in separate ranges in southern India, the Himalayan foothills, and northwest India; it is also found in southern China, Burma, Thailand, Cambodia and the Malaysian peninsula. China ( Wade-Giles ( Mandarin) Chung¹kuo² is a cultural region, an ancient Civilization, and depending on perspective a National Burma, officially the Union of Myanmar ( pjìdàunzṵ mjàmmà nàinŋàndɔ̀ is the largest country by geographical area in mainland Southeast Asia. The Kingdom of Thailand (ˈtaɪlænd ราชอาณาจักรไทย, râːtɕʰa-ʔaːnaːtɕɑ̀k-tʰɑj The Kingdom of Cambodia ( formerly known as Kampuchea (, transliterated: Preăh Réachéanachâkr Kâmpŭchea) is a country in South East For the biogeographical region see Malesia Malaysia (məˈleɪʒə or /məˈleɪziə/ is a country that consists of thirteen states and Most males of this subspecies have tusks.
E. m. maximus is only found in Sri Lanka. Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka ( Sinhalese:, இலங்கை known as Ceylon before 1972 is an Island It has a larger skull relative to body size, and commonly has a decolourised area of skin on the forehead and the front of the upper trunk. It is rare to find even males with tusks. Males can reach a height of 3. 5 metres at the shoulder.
E. m. sumatrensis is only found in Sumatra, Indonesia. Sumatra (also spelled Sumatera) is the sixth largest island in the world (approximately 470000 km² and is the largest island entirely in Indonesia (two The Republic of Indonesia ( (Republik Indonesia is a Country in Southeast Asia. It is the second smallest subspecies, between 1. 7 to 2. 6 metres at the shoulder. It is sometimes called the pocket elephant because of its size.
E. m. borneensis is found in north Borneo (east Sabah and extreme north Kalimantan). Borneo is the third largest island in the world and is located at the centre of Maritime Southeast Asia. It is smaller than all the other subspecies. It has larger ears, a longer tail, and straighter tusks. Genetic tests found that its ancestors separated from the mainland population about 300,000 years ago. [12]
In addition, two extinct subspecies are considered by some authorities to have existed:
- The Chinese population is sometimes separated as E. In Biology and Ecology, extinction is the cessation of existence of a Species or group of taxa. m. rubridens (pink-tusked elephant); it disappeared after the 14th century BC.
- The Syrian Elephant (E. The Syrian elephant ( Elephas maximus asurus) is said to have been the westernmost Subspecies of the Asian Elephant ( Elephas maximus) in ancient m. asurus), the westernmost and one of the largest subspecies of the Asian Elephant, went extinct around 100 BC. This latter population, along with other Indian elephants, were considered the best war elephants in antiquity, and found superior to the smallish North African Elephant (Loxodonta africana pharaonensis) used by the armies of Carthage. A war elephant is an Elephant trained and guided by humans for combat The North African Elephant ( Loxodonta africana pharaohensis) was a possible subspecies of the African Bush Elephant ( Loxodonta africana) or possibly a Carthage (Καρχηδών Karkhēdōn, Carthago from the Phoenician קרת חדשת phn-Latn Qart-ḥadašt meaning new town) refers
See also
References
- ^ Shoshani, Jeheskel (November 16, 2005). Batyr was an Asian Elephant known for his ability to precisely reproduce Human speech. The Elephants of Kerala are an integral part of the daily life in Kerala, South India. in Wilson, D. E. , and Reeder, D. M. (eds): Mammal Species of the World, 3rd edition, Johns Hopkins University Press, 90. ISBN 0-801-88221-4.
- ^ Asian Elephant Specialist Group (1996). Elephas maximus. 2006 IUCN Red List of Threatened Species. The IUCN Red List of Threatened Species (also known as the IUCN Red List or Red Data List) created in 1963 is the world's most comprehensive inventory of the global IUCN 2006. Retrieved on 10 May 2006. Listed as Endangered (EN A1cd v2. 3)
- ^ World Wildlife Fund factsheet
- ^ a b Clutton-Brock, Juliet (1987). A Natural History of Domesticated Mammals, pp. 208. ISBN 0521346975.
- ^ a b c d e Lydekker, R. (1894). The Royal Natural History. Volume 2.
- ^ Wood, The Guinness Book of Animal Facts and Feats. Sterling Pub Co Inc (1983), ISBN 978-0851122359
- ^ Shoshani, Jeheskel; John F. Eisenberg (1982). "Elephas maximus". Mammalian Species 182: 1-8.
- ^ Payne, Katherine (1998). Silent Thunder. Simon & Schuster. ISBN 0-684-80108-6.
- ^ Rasmussen, L. E. L. , Lee, T. D. , Zhang, A. J. , Roelofs, W. L. & Daves, G. D. (1997). Purification, identification, concentration and bioactivity of (Z)-7-dodecen-1-yl acetate: sex pheromone of the female Asian elephant, Elephas maximus. Chemical Senses, 22, 417–437.
- ^ Rasmussen, L. E. L. , Lee, T. D. , Roelofs, W. L. , Zhang, A. J. & Daves, G. D. (1996). Insect pheromone in elephants. Nature, 379, 684.
- ^ Rangarajan, M. (2001) India's Wildlife History, pp 6.
- ^ Fernando P, Vidya TNC, Payne J, Stuewe M, Davison G, et al. (2003) DNA Analysis Indicates That Asian Elephants Are Native to Borneo and Are Therefore a High Priority for Conservation. PLoS Biol 1(1): e6 Full text
External links
- Asian Elephants at the Zoological Gardens of the World
- National Zoo Facts on Asian Elephant and a Webcam of the Asian Elephant exhibit
- The Chaffee Zoo Asian Elephant Fact Sheet
- U.S. Fish & Wildlife Species Profile
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