I argued in Chapter 5 that the image of the ivory tower in no way describes the contemporary position of higher education.It is the stuff of ivory towers and only clever boys and girls are expected to reflect upon its themes.Another example of an imported good with a widespread distribution is ivory, which normally occurs as rings.She tucked her ivory satin shirt tighter into the waistband of her fawn moleskin trousers.Walrus tusks were essentially substitutes for ivory in territories remote from supplies of elephant tusks.The city suits and ivory silk dinner jackets she gave to Franky.Departmental barriers and ivory tower attitudes are detrimental to good results. Islam From the time of Muhammad onwards, if not before, ivory was an idea material for the intricate abstract patterns favoured by Islamic art, and was used extensively in the Middle East, North Africa and Islamic Spain.The relative prosperity of the Islamic world coupled with its easier geographical access to both African and Indian ivories allowed its carvers to.○○ noun ( plural ivories ) 1 HBA D the hard smooth yellowish-white substance from the tusk s (=long teeth ) of an elephant an ivory chess set 2 CC a yellowish-white colour an ivory silk wedding gown 3 AVS something made of ivory, especially a small figure of a person or animal a collection of ivories Examples from the Corpus ivory.This article originally appeared on USA TODAY: Elephants are evolving to have no tusks.From Longman Dictionary of Contemporary English ivory i‧vo‧ry / ˈaɪv əri /
“When mothers pass (tusklessness) on, we think the sons likely die early in development, a miscarriage,” Brian Arnold, a co-author of the study and evolutionary biologist at Princeton, told The Associated Press. as a surname), Anglo-French ivorie, from Old North French ivurie (12c.), from Medieval Latin eborium ivory, noun use of neuter of Latin eboreus of. Research revealed the trait to be sex-linked and related to specific genes that generated a tuskless phenotype more likely to survive in the face of poaching. One anomaly with the evolutionary development is the fact that almost all of the elephants without tusks are female. "In other words, it happened so quickly because tuskless females had a MUCH higher probability of surviving the war, and thus a MUCH greater potential for passing their genes on to the next generation." "The fact that it occurred so rapidly is rare indeed, and is a direct function of the strength of selection," Long said.
The tuskless elephants started to balloon in numbers shortly after the end of the country's civil war in 1992 (it began in 1977) and analysis revealed they were five times more likely to survive during the war without tusks. "Evolution is simply a change in heritable characteristics within a population over successive generations, and based on the results of our study, the shift toward tusklessness among female elephants at Gorongosa fits this definition perfectly," Ryan Long, an author of the study and an associate professor of wildlife sciences at the University of Idaho, told CNN.įact check:: Image of an elephant carrying a lion cub is alteredĬompany: Seeking to resurrect the woolly mammoth, return extinct animal to the ArcticĪn elephant's tusks help the animal lift heavy branches, topple trees, strip bark, fight, and dig holes for water and minerals. Analysis from the study revealed that tuskless elephants are five times more likely to survive. In Gorongosa in the 1970s, 18.5% of female elephants didn't have tusks. Female African elephants in Mozambique's Gorongosa National Park have been born without their ever-crucial ivory tusks, and scientists are saying it's an evolutionary result of the brutal poaching and killing of the animals during the country's civil war.Īccording to new research released Thursday in the journal, Science, between the years of 19, elephants born without tusks – almost all female – tripled in number.
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