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Triatoma brasiliensis
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Triatoma brasiliensis : ウィキペディア英語版
Triatoma brasiliensis
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''Triatoma brasiliensis'' Neiva, 1911 is now considered the most important Chagas disease vector in the semiarid areas of northeastern Brazil.〔 Costa J, Peterson AT, Beard CB (2002) Ecologic niche modeling and differentiation of populations of ''Triatoma brasiliensis'' Neiva, 1911, the most important Chagas' disease vector in northeastern Brazil (hemiptera, reduviidae, triatominae). ''Am J Trop Med Hyg 67'':516-20〕 ''T. brasiliensis'' occurs in 12 Brazilian states, including Maranhão, Piauí, Ceará, Rio Grande do Norte, and Paraíba.
''T. brasiliensis'' is native to this part of Brazil, and thus persists in the natural environment. This species of Kissing Bug has the greatest potential to spread Chaga's disease due to its distribution over large areas where numerous people reside. ''Triatoma '' species are commonly called Kissing Bugs because they bite around the mouth where skin is thinner. ''T. brasiliensis'' also has the greatest potential to colonize new areas and spread throughout northeastern parts of Brazil. This makes control problematic (see below).
==Life Cycle==

Female triatomids deposit small eggs in secluded areas. After 8 to 10 days the first of five nymph stages emerges. A full blood meal is required before continuing onto the next nymph state. The cycle from egg to adult can take up to two years in nature. Adults are obligate blood feeders that feed primarily at night and hide during the day. ''T. brasiliensis'' becomes infected with ''Trypanosoma cruzi'' when they feed on infected hosts such as humans, dogs, cats, and other mammals. ''T. brasiliensis'' then transfers ''T. cruzi'' through feces on the new host's skin. It is not known how long the adults can survive in the wild but an infected bug can serve as a vector for up to three years.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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