Virus-like particles in Polysporoplasma mugilis (Protozoa:Myxosporea), parasitic in a marine fish (Liza aurata L.).
Virus-like particles (VLP) were observed in the capsulogenic cells of the spores of Polysporoplasma mugilis, a myxosporean parasite in the trunk kidney of Liza aurata. Transmission electron microscopy revealed icosahedral, electron-dense cored VLP of 18-20 nm in diameter. By their ultrastructural characteristics and cytoplasmic position, these VLP are related to the Picornaviridae. The VLP were densely packed inside membraned vacuoles. VLP were found neither in other developmental stages, nor in other parts of the spore, nor in the host tissue. This is the third record of VLP in protozoans parasitic in fish, and the first one from the Myxosporea.
Sitjà-Bobadilla
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Instituto de Acuicultura de Torre de la Sal (CSIC), Ribera de Cabanes, Castellón, Spain.
Alvarez-Pellitero
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P
D000818:Animals; D018870:Endoplasmic Reticulum, Rough / Q000648:ultrastructure / Q000821:virology; D056890:Eukaryota / Q000302:isolation & purification / Q000821:virology*; D005399:Fishes / Q000469:parasitology*; D007668:Kidney / Q000469:parasitology; D008854:Microscopy, Electron; D012623:Seawater; D014617:Vacuoles / Q000648:ultrastructure / Q000821:virology; D014780:Viruses / Q000145:classification / Q000302:isolation & purification* / Q000648:ultrastructure