ULTRASTRUCTURAL STUDIES OF CERTAIN ASPECTS OF THE DEVELOPMENT OF TRYPANOSOMA-CONGOLENSE IN GLOSSINA-MORSITANS-MORSITANS
ULTRASTRUCTURAL STUDIES OF CERTAIN ASPECTS OF THE DEVELOPMENT OF TRYPANOSOMA-CONGOLENSE IN GLOSSINA-MORSITANS-MORSITANS
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DOI：
10.1111/j.1550-7408.1979.tb04195.x
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发表时间：
1979-01-01
期刊：
影响因子：
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通讯作者：
STAMFORD, S
中科院分区：
文献类型：
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作者：
EVANS, DA;ELLIS, DS;STAMFORD, S
T. Congolense [反刍动物寄生虫]感染。对感染的果蝇的肠道和喙的切片进行电镜检查。用培养的原环型T. congolense在中肠有严重的锥虫感染，涉及内围食区和外围食区。在中肠中部的围食膜形成过程中，也可见到锥虫。到感染后21天，锥虫已经到达苍蝇的喙，并被发现为外鞭毛体形式的团块，通过鞭毛和食物管道的几丁质衬里之间的半桥粒附着在唇上。相邻外鞭毛体的鞭毛间存在桥粒连接。在感染后28天和42天检查蝇。除了唇上的附着形式外，下咽部还有游离形式。
The course of T. congolense [ruminant parasite] infections in G. morsitans morsitans was followed by EM examination of ultrathin sections of the guts and proboscises of infected flies. Guts dissected from flies 7 days after infection with culture procyclic forms of T. congolense had heavy trypanosome infections in the midgut involving both the endo- and ectoperitrophic spaces. Trypanosomes were also seen in the process of penetrating the fully formed peritrophic membrane in the central region of the midgut. By 21 days postinfection [p.i.], trypanosomes had reached the proboscis of the fly and were found as clumps of epimastigote forms attached to the labrum by hemidesmosomes between their flagella and the chitinous lining of the food canal. Desmosome connections were observed between the flagella of adjacent epimastigotes. Flies examined at 28 and 42 days p.i. had, in addition to the attached forms in the labrum, free forms in the hypopharynx.