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首页> 外文期刊>Parasitology >The development of Psychodiella sergenti (Apicomplexa: Eugregarinorida) in Phlebotomus sergenti (Diptera: Psychodidae)
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The development of Psychodiella sergenti (Apicomplexa: Eugregarinorida) in Phlebotomus sergenti (Diptera: Psychodidae)

机译：Sergenti（双翅目：Psychodidae）的Sergenti gentodii（Apicomplexa：Eugregarinorida）的发育。

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摘要

Psychodiella sergenti is a recently described specific pathogen of the sand fly Phlebotomus sergenti, the main vector of Leishmania tropica. The aim of this study was to examine the life cycle of Ps. sergenti in various developmental stages of the sand fly host. The microscopical methods used include scanning electron microscopy, transmission electron microscopy and light microscopy of native preparations and histological sections stained with periodic acid-Schiff reaction. Psychodiella sergenti oocysts were observed on the chorion of sand fly eggs. In 1st instar larvae, sporozoites were located in the ectoperitrophic space of the intestine. No intracellular stages were found. In 4th instar larvae, Ps. sergenti was mostly located in the ectoperitrophic space of the intestine of the larvae before defecation and in the intestinal lumen of the larvae after defecation. In adults, the parasite was recorded in the body cavity, where the sexual development was triggered by a bloodmeal intake. Psychodiella sergenti has several unique features. It develops sexually exclusively in sand fly females that took a bloodmeal, and its sporozoites bear a distinctive conoid (about 700 nm long), which is more than 4 times longer than conoids of the mosquito gregarines.
机译：沙丁鱼精神病是一种新近描述的沙蝇麻风杆菌的特异病原体，它是热带利什曼原虫的主要媒介。这项研究的目的是检查Ps的生命周期。 Sergenti在沙蝇寄主的各个发育阶段。所用的显微镜​​方法包括天然制剂的扫描电子显微镜，透射电子显微镜和光学显微镜以及用高碘酸-席夫反应染色的组织切片。在沙蝇卵绒毛的绒毛膜上观察到了沙特氏菌卵囊。在第一龄幼虫中，子孢子位于肠的外养空间。没有发现细胞内阶段。在四龄幼虫中，PS。 Sergenti主要在排便前位于幼虫肠道的肠外营养空间中，在排便后位于幼虫的肠腔中。在成年人中，寄生虫被记录在体腔中，那里的性发育是通过摄入血粉而引起的。 Sergenti Psychodiella sergenti有几个独特的功能。它只在吸食血粉的沙蝇雌性体内发育，其子孢子带有独特的类固醇（长约700 nm），是蚊子人造黄油类固醇的4倍以上。

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