Tse tse incontri

The tsetse are obligate parasites that live by feeding on the blood of vertebrate animals. Tsetse have been extensively studied because of their role in transmitting disease. They have a prominent economic impact in sub-Saharan Africa as the biological vectors of trypanosomeswhich cause human sleeping sickness and animal trypanosomiasis. Tsetse are multivoltine and long-lived, typically producing about four broods per year, and up to 31 broods over their lifespans. Tsetse can be distinguished from other large flies by two easily observed features. Tsetse fold their wings completely when they are resting so that one wing rests directly on top of the other over their abdomens. Tsetse also have a long probosciswhich tse tse incontri directly forward and is attached by a distinct bulb to the bottom of their heads. Fossilized tsetse tse tse incontri been recovered from the Florissant Fossil Beds in Colorado[4] laid down some 34 million years ago. Tsetse were absent from much of southern and eastern Africa until colonial times. The accidental introduction of rinderpest in killed most of the cattle in these parts of Tse tse incontri and the resulting famine removed much of the human population. Thorny bush ideal for tsetse quickly grew up where there had been pasture, and was repopulated by wild mammals. Tsetse and sleeping sickness soon colonised the whole region, effectively excluding the reintroduction of farming and animal husbandry. Sleeping sickness has been described by some conservationists as "the best game warden in Africa". The word tsetse means "fly" in Tswanaa Bantu language of southern Africa. The word is pronounced tseh-tseh in the Sotho languages and is easily rendered in other African languages.

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The biology of tsetse is relatively well understood by entomologists. All articles with dead external links Articles with dead external links from September Articles with permanently dead external links Articles lacking in-text citations from June All articles lacking in-text citations Articles with 'species' microformats All articles with unsourced statements Articles with unsourced statements from September Articles with unsourced statements from December Articles with unsourced statements from December Articles with unsourced statements from November Articles with unsourced statements from September Commons category link is locally defined Wikipedia articles with NDL identifiers. Sleeping sickness — chronic form. The accidental introduction of rinderpest in killed most of the cattle in these parts of Africa and the resulting famine removed much of the human population. Another tactic to manage the disease is to target the disease directly using surveillance and curative or prophylactic treatments to reduce the number of hosts that carry the disease. Journal of Experimental Biology. The result, across eastern and southern Africa, is a modern landscape of manmade ecosystems: Tsetse flies are regarded as a major cause of rural poverty in sub-Saharan Africa because they prevent mixed farming. Tsetse flies can be seen as independent individuals in two forms: Pastoralists were left with no animals, their source of income and farmers were deprived of their working animals for ploughing and irrigation.

Tse tse incontri

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Tse tse incontri