Filimonova S A
Parazitologiia. 2004 Jan-Feb;38(1):12-9.
Using light and electron microscopy, the structure of the peritrophic membrane (PM) was studied in females of the biting midge Culicoides punctatus (Mg.) during the process of blood meal digestion. The PM formation occurs in the posterior part of midgut and lasts during the most time of the digestive cycle. The PM precursors are probably not associated with any intracellular granules. The PM consists of two main components: light structural component and dark amorphous matrix, both of which are directly released from the entire microvillar surface. The aggregation of secreted components takes place in the gut lumen to form gel-like multilayered PM up to 6 microns thickness with bundles of microfibrills situated in the PM surface facing the lumen. Similarities and differences of the PM formation in most groups of blood-sucking insects are discussed.
利用光学显微镜和电子显微镜，对吸血蠓类尖细蠓（Mg.）雌虫在血餐消化过程中围食膜（PM）的结构进行了研究。围食膜的形成发生在中肠后部，并在消化周期的大部分时间内持续存在。围食膜前体可能与任何细胞内颗粒无关。围食膜由两个主要成分组成：浅色结构成分和深色无定形基质，两者均直接从整个微绒毛表面释放。分泌成分在肠腔内聚集，形成厚度达6微米的凝胶状多层围食膜，微原纤维束位于围食膜面向肠腔的表面。讨论了大多数吸血昆虫类群中围食膜形成的异同。
