The first stage larva of brugia pahangi in Aedes togoi: An ultrastructural study

Lehane M. J. 1978. The first stage larva of Brugi pahangi in Aedes togoi: an ultrastructural study. International Journal for Parasitology8: 207–218. The ultrastructure of the first stage larva in the mosquito is described up to the onset of the first cuticular moult. The following structural changes from the microfilarial stage have been noted at this time; the numbers of muscle cells have increased, usually to four with a maximum of six in each intercordai quadrant ; part of the pharyngeal thread has formed into a knot ; the intestinal lumen has developed and is surrounded in any given transverse section by up to four intestinal cells and the inner body has largely been lost; the anal apparatus has enlarged and developed; the excretory apparatus has largely degenerated. The functional morphology of the various organ systems described is discussed.