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Fine structure of the synganglion of Ornithodoros (Pavlovskyella) erraticus (Ixodoidea: Argasidae)



Fine structure of the synganglion of Ornithodoros (Pavlovskyella) erraticus (Ixodoidea: Argasidae)



Acarologia (Paris): 274: 295-302



The fused synganglionic mass in the unfed Ornithodoros (Pavlovskyella) erraticus female is enclosed within a sinus of the circulatory system and consists of a neural lamella surrounding an outer cortex and an inner neuropile containing the oesophageal canal. The neural lamella consists of alternating layers of finely granular material containing collagenous-like fibers and may function to provide support to underlying tissues, resist positive hydrostatic pressure and allow permeability to nutrients and ionic exchange. Immediately below the neural lamella is a perineural layer of glial cells. The remainder of the cortex comprises two types of neurosecretory cell bodies, globuli cells and glial cells, and one type of non-neurosecretory cells. The glial cells are structurally related to the transfer of trophic material. The neuropile consists of nerve fibers (axons and dendrite) surrounded by glial cells.

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Accession: 021039238

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