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Musth or must (from Persian, )''The Oxford Dictionary and Thesaurus: American edition'', published 1996 by
Oxford University Press Oxford University Press (OUP) is the university press of the University of Oxford. It is the largest university press in the world, and its printing history dates back to the 1480s. Having been officially granted the legal right to print books ...
; p. 984
is a periodic condition in bull (male) elephants characterized by aggressive behavior and accompanied by a large rise in reproductive hormones.
Testosterone Testosterone is the primary sex hormone and anabolic steroid in males. In humans, testosterone plays a key role in the development of male reproductive tissues such as testes and prostate, as well as promoting secondary sexual characteristi ...
levels in an elephant in musth can be on average 60 times greater than in the same elephant at other times (in specific individuals these testosterone levels can even reach as much as 140 times the normal). However, whether this hormonal surge is the sole cause of musth or merely a contributing factor is unknown. Scientific investigation of musth is problematic because even the most placid elephants become violent toward humans and other elephants during musth. Musth differs from rut in that the female elephant's
estrus 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 ...
cycle is not seasonally linked, whereas musth most often takes place in winter. Furthermore, bulls in musth have often been known to attack female elephants, regardless of whether or not the females are in heat.


Effects


Secretions

Elephants in musth often discharge a thick tar-like secretion called
temporin Temporins are a family of peptides isolated originally from the skin secretion of the European red frog, ''Rana temporaria''. Peptides belonging to the temporin family have been isolated also from closely related North American frogs, such as ''R ...
from the temporal ducts on the sides of the head. Temporin contains proteins,
lipid Lipids are a broad group of naturally-occurring molecules which includes fats, waxes, sterols, fat-soluble vitamins (such as vitamins A, D, E and K), monoglycerides, diglycerides, phospholipids, and others. The functions of lipids includ ...
s (notably
cholesterol Cholesterol is any of a class of certain organic molecules called lipids. It is a sterol (or modified steroid), a type of lipid. Cholesterol is biosynthesized by all animal cells and is an essential structural component of animal cell mem ...
),
phenol Phenol (also called carbolic acid) is an aromatic organic compound with the molecular formula . It is a white crystalline solid that is volatile. The molecule consists of a phenyl group () bonded to a hydroxy group (). Mildly acidic, it ...
and 4-methyl phenol, cresols and
sesquiterpenes Sesquiterpenes are a class of terpenes that consist of three isoprene units and often have the molecular formula C15H24. Like monoterpenes, sesquiterpenes may be cyclic or contain rings, including many unique combinations. Biochemical modificatio ...
(notably farnesol and its derivatives). Secretions and
urine Urine is a liquid by-product of metabolism in humans and in many other animals. Urine flows from the kidneys through the ureters to the urinary bladder. Urination results in urine being excreted from the body through the urethra. Cellular ...
collected from zoo elephants have been shown to contain elevated levels of various highly odorous ketones and
aldehyde In organic chemistry, an aldehyde () is an organic compound containing a functional group with the structure . The functional group itself (without the "R" side chain) can be referred to as an aldehyde but can also be classified as a formyl grou ...
s. The elephant's aggression may be partially caused by a reaction to the temporin, which naturally trickles down into the elephant's mouth, and (at least to a human) has a foul taste. Another contributing factor may be the accompanying swelling of the
temporal gland Temporins are a family of peptides isolated originally from the skin secretion of the European red frog, ''Rana temporaria''. Peptides belonging to the temporin family have been isolated also from closely related North American frogs, such as ''R ...
s, which presses on the elephant's eyes and causes acute pain comparable to severe
toothache Toothache, also known as dental pain,Segen JC. (2002). ''McGraw-Hill Concise Dictionary of Modern Medicine''. The McGraw-Hill Companies. is pain in the teeth or their supporting structures, caused by dental diseases or pain referred to the t ...
. Elephants sometimes try to counteract this pain by digging their
tusk Tusks are elongated, continuously growing front teeth that protrude well beyond the mouth of certain mammal species. They are most commonly canine teeth, as with pigs and walruses, or, in the case of elephants, elongated incisors. Tusks share ...
s into the ground.


Behavior

Musth is linked to sexual arousal or establishing dominance, but this relationship is far from clear. Wild bulls in musth often produce a characteristic low, pulsating rumbling noise (known as "musth rumble") which can be heard by other elephants for considerable distances. The rumble has been shown to prompt not only attraction in the form of reply vocalizations from cows in heat, but also silent avoidance behavior from other bulls (particularly juveniles) and non-receptive females, suggesting an evolutionary benefit to advertising the musth state. Cases of rogue elephants randomly attacking native villages or goring and killing
rhinoceros A rhinoceros (; ; ), commonly abbreviated to rhino, is a member of any of the five extant species (or numerous extinct species) of odd-toed ungulates in the family Rhinocerotidae. (It can also refer to a member of any of the extinct species ...
es without provocation in national parks in Africa have been attributed to musth in young male elephants, especially those growing in the absence of older males. Reintroducing older males into the elephant population of the area tends to prevent younger males from entering musth, and therefore ameliorates this aggressive behavior.


In domesticated elephants

A musth elephant, wild or domesticated, is extremely dangerous to both humans and other elephants. In
zoos A zoo (short for zoological garden; also called an animal park or menagerie) is a facility in which animals are kept within enclosures for public exhibition and often bred for conservation purposes. The term ''zoological garden'' refers to zool ...
, bull elephants in musth have killed numerous keepers when normally friendly animals have become uncontrollably enraged. In contrast to normal dominance behavior, bulls in musth will even attack and kill members of their own family, including their own calves. Zoos keeping adult male elephants need strong, purpose-built enclosures to isolate males during their musth, which greatly complicates attempting to breed elephants in zoos; most zoos that keep a single elephant or a small herd typically have only females for this reason. In Sri Lanka and
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 ...
, domesticated elephants in musth are traditionally tied to a strong tree and denied food and water, or put on a starvation diet, for several days, after which the musth passes. This method greatly shortens the duration of the musth, typically to five to eight days; sedatives, like xylazine, are also used.Musth in Elephants
by Deepa Ananth; published April 2000 in ''Zoos' Print Journal'' 15(5):259-262; DOI:10.11609/JoTT.ZPJ.15.5.259-62
MANAGING ELEPHANT IN MUSTH: A CASE REPORT
by Parag Nigam, Samir Sinha, Pradeep Malik, and Sushant Chowdhary; in ''Zoos' Print Journal'' 21(5): 2265-2266 (May 2006)


References in popular culture

References to elephants in musth (whose
temporin Temporins are a family of peptides isolated originally from the skin secretion of the European red frog, ''Rana temporaria''. Peptides belonging to the temporin family have been isolated also from closely related North American frogs, such as ''R ...
secretion is often referred to as "
ichor In Greek mythology, ichor () is the ethereal fluid that is the blood of the gods and/or immortals. The Ancient Greek word () is of uncertain etymology, and has been suggested to be a foreign word. In classical myth Ichor originates in Greek ...
") are frequent in classical Indian poetry and prose; for example, in the '' Raghuvaṃśa'', Kalidasa says that the king's elephants drip ichor in seven streams to match the scent put forth by the seven-leaved 'sapta-cchada' (= "seven-leaf") tree (perhaps '' Alstonia scholaris''). Some poets turn it around to compare the elephant's ichor to the sapta-cchada. The phenomenon has been described in poetry long before the time of Kalidasa, in Sanskrit, Tamil and Pali literature. Valmiki, in Sundara Kanda of the Ramayana, makes reference to the Mahendra mountain shedding water like an elephant's rut juice upon being pressed by Hanuman. ''
Shooting an Elephant "Shooting an Elephant" is an essay by British writer George Orwell, first published in the literary magazine '' New Writing'' in late 1936 and broadcast by the BBC Home Service on 12 October 1948. The essay describes the experience of the Englis ...
'' is an autobiographical account by George Orwell in which he describes how an elephant in
Burma Myanmar, ; UK pronunciations: US pronunciations incl. . Note: Wikipedia's IPA conventions require indicating /r/ even in British English although only some British English speakers pronounce r at the end of syllables. As John Wells explai ...
had an attack of musth and killed an Indian, which in turn led to the death of the elephant. Sangam poetry describes musth. Kummatoor Kannanaar in Pathitrupatthu 12 describes it as follows: The Tamil movie '' Kumki'', which revolves around a
mahout A mahout is an elephant rider, trainer, or keeper. Mahouts were used since antiquity for both civilian and military use. Traditionally, mahouts came from ethnic groups with generations of elephant keeping experience, with a mahout retaining h ...
and his trained elephant, shows the elephant in musth towards the climax. Captive elephants are either trained for duties in temples and cultural festivals or trained as a kumki elephant which confronts wild elephants and prevents them from entering villages. Elephants trained for temple duties are of a gentle nature and cannot face wild elephants. In this movie, a tribal village wants to hire a kumki elephant to chase away wild elephants which enter the village every harvest season. The mahout, who needs money, takes his temple-trained elephant to do this job, in the vain hope that wild elephants won't come in. But wild elephants start attacking the village on the harvest day. The temple-trained elephant enters musth and thus fights with the wild elephants, kills the most notorious among the herd, and dies from injuries sustained during the fight. In his
James Bond The ''James Bond'' series focuses on a fictional British Secret Service agent created in 1953 by writer Ian Fleming, who featured him in twelve novels and two short-story collections. Since Fleming's death in 1964, eight other authors have ...
novel '' The Man With the Golden Gun'', Ian Fleming wrote that the villain,
Francisco Scaramanga Francisco Scaramanga is a fictional character and one of the main antagonists in the James Bond novel and film version of '' The Man with the Golden Gun''. Scaramanga is an assassin who kills with his signature weapon, a pistol made of solid gold ...
, was driven to become a cold-blooded assassin after authorities shot an elephant that he had ridden in his circus act because the elephant went on a rampage while in musth. In Jules Verne's '' Around the World in Eighty Days'',
Phileas Fogg Phileas Fogg () is the protagonist in the 1872 Jules Verne novel ''Around the World in Eighty Days''. Inspirations for the character were the American entrepreneur George Francis Train and American writer and adventurer William Perry Fogg. ...
buys an elephant which was being fed sugar and butter so it would go into musth for combat purposes; however, the animal has been on this regimen for a relatively short time so the condition has not yet presented.


References


External links


All about elephants in zoo and circus. Elephant encyclopedia written by an elephant keeper
{{Elephants Elephants