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Musth or must is a periodic condition in bull (male) elephants, characterized by highly aggressive behavior and accompanied by a large rise in reproductive hormones — testosterone levels in an elephant in musth can be as much as 60 times greater than in the same elephant at other times. 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 highly violent toward humans and other elephants during musth, requiring segregation and isolation until they recover. Female elephants do not undergo musth.
Although it has often been speculated by zoo visitors that musth is linked to rut, it is unlikely there is a biological connection because the female elephant’s estrus 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. There has been speculation that musth is connected to natural periodic reorganization of dominance among males in elephant herds.
Often, elephants in musth discharge a thick tar-like secretion called temporin from the temporal ducts on the sides of the head. Temporin contains proteins, lipids (notably cholesterol), phenol and 4-methyl phenol, cresols and sesquiterpenes (notably farnesol and its derivatives). Secretions and urine collected from zoo elephants have been shown to contain elevated levels of various highly odorous ketones and aldehydes. The elephant’s aggression may be partially caused by a reaction to the temporin, which naturally trickles down into the elephant’s mouth. Another contributing factor may be the accompanying swelling of the temporal glands; this presses on the elephant’s eyes and causes acute pain comparable to severe root abscess toothac
Source: http://www.corbettnationalpark.in & www.wwf.org
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