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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Trypanosoma antiquus ： ウィキペディア英語版 Trypanosoma antiquus ''Trypanosoma antiquus'' is an extinct species of kinetoplastid (class Kinetoplastida), a monophyletic group of unicellular parasitic flagellate protozoa. The genus name is derived from the Greek ''trypano'' (borer) and ''soma'' (body) because of their corkscrew-like motion, and the species name from ''antiquua'' (old) reflecting the age of the specimen.〔 All trypanosomes are heteroxenous (requiring more than one obligatory host in order to complete life cycle) or are transmitted through some variation of a vector. The species was described in 2005 by George Poinar, Jr. in the journal Vector-Borne & Zoonotic Diseases from metatrypanosomes preserved in several fecal pellets encased in ''Hymenaea protera'' amber. The fossil was recovered in the Dominican Republic from early Miocene Burdigalian stage deposits on the island of Hispaniola.〔 Included with the pellets and thought to be the origin for them, is the extinct kissing bug ''Triatoma dominicana''.〔 This association is the oldest known example of the vector association between ''Triatoma'' and ''Trypanosoma''. The holotype, deposited in the Oregon State University as specimen number P-3-3, was mined from the La Toca mine in the Dominican Republic. ''T. dominicana'' and ''T. antiquus'' lived in an environment similar to modern moist tropical rain forests.〔 The preserved metatrypanosomes range in size from 11 to 20 µm with the average length being 15 µm. The species is placed in the ''Trypanosoma'' subgenus ''Schizotrypanum'', and is identifiable by age and the average length being shorter than that of other ''Schizotrypanum'' species. Based on the contents of the amber specimen including three hematophagous insects, it is likely to have been formed in a tree cavity.〔 Associated with the insects are several mammal hairs from an unidentified Chiropteran, the likely host for ''T. dominicana''. The pellets are thought to have been deposited after the ''T. dominicana'' finished feeding on the host bat.〔 Modern bat-hosted trypanosomes in the region are considered a vector for the fatal Chagas disease in humans.〔 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Trypanosoma antiquus」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.