Trypanosoma cruzi in the rectum of the bug Triatoma infestans:: Effects of blood ingestion by the starved vector
Trypanosoma cruzi in the rectum of the bug Triatoma infestans:: Effects of blood ingestion by the starved vector
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DOI：
10.4269/ajtmh.1998.59.166
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发表时间：
1998-07-01
影响因子：
3.3
通讯作者：
Schaub, GA
中科院分区：
文献类型：
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作者：
Kollien, AH;Schaub, GA
为了跟踪长期饥饿后取食寄主对昆虫发育的影响，在最后一次取食(DAF)后60d和取食后不同时间测定了致病锥虫直肠内已建立的感染锥虫的种群密度和组成。原始种群减少后增加，一直持续到第10天。在饥饿的虫体中，约有30%是球形鞭毛体(包括中间体)，20%是上鞭毛体，50%是类鞭毛体，但有一种，这些形式分别占2%，70%和10%。此外，有一次约有10%的巨细胞，即多分裂阶段。在接下来的两天里，这种形式平均占总人口的30%-50%，但后来几乎完全消失了。因此，如果在载体长时间饥饿后条件变得最优，巨细胞显然是通过上胚体的快速生长而发展起来的。
To follow the developmental effects of feeding of the insect host after long starvation periods, the population density and composition of an established infection of Trypanosoma cruzi in the rectum of Triatoma infestans were determined 60 days after the last feeding (daf) and then at different intervals after feeding. The original population decreased and then increased up to the 10th daf. In starved bugs, about 30% were spheromastigotes (including intermediate forms), 20% epimastigotes, and 50% trypomastigotes, but one daf, these forms represented 2%, 70%, and 10%, respectively. In addition, one daf there were about 10% giant cells, i.e., a multiple division stage. in the following two days, this form represented on average 30-50% of the total population, but it then disappeared nearly completely. Thus, giant cells evidently develop by rapid growth of epimastigotes, if conditions become optimal after long starvation periods of the vector.