Tetracapsuloides bryosalmonae

The myxozoan, Tetracapsuloides bryosalmonae, is a multicellular endoparasite of freshwater bryozoans and salmonid fish.

Tetracapsuloides bryosalmonae causes the devastating Proliferative Kidney Disease in trout and salmon (Anderson et al. 1999; Canning et al. 1999; Feist et al. 2001), resulting in significant economic losses for aquaculture and threatening wild fish populations.

Species detail

Sac-like stages consist of an outer and inner epithelial tissue layer.
Cell doublets and pseudoplasmodial stages develop in fish kidney.
Spores consist of valve cells that form the spore wall, capsulogenic cells that produce polar capsules, and infective sporoplasm cells.
Polar capsules are intracellular organelles in spores of all myxozoans and which share a common ancestry with nematocysts found in the stinging cells of cnidarians.

Taxonomy

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Distribution

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Biology

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References

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