Fig. 5. (A) and (B) Muscle section from lumpfish, Cyclopterus lumpus, fixed 24 h post mortem. (A) Ruptured Kudoa plasmodia with subsequent liberation of mature spores causing focal necrosis of the muscle fibre enveloping the plasmodium. (B) Higher magnification showing liberated spores (arrows) and a focal necrosis in the vicinity of the spores (asterisk). (C) Muscle section of an uninfected fish at approx. 48 h p.m. (D) Section of muscle of a heavily infected fish at approximately 48 h p.m. showing extensive myoliquefaction (asterisk). (E) A close up of the affected area showing numerous Kudoa spores (arrowhead) and the associated liquefactive necrosis. Scale bars: (A) = 50 µm, (B) = 10 µm, (C) and (D) = 200 µm, (E) = 10 µm. Abbreviations: MF = Muscle fibres, AC = Adipocytes.

Published as part of Kristmundsson, Árni & Freeman, Mark Andrew, 2014, Negative effects of Kudoa islandica n. sp. (Myxosporea: Kudoidae) on aquaculture and wild fisheries in Iceland, pp. 135-146 in International Journal for Parasitology: Parasites and Wildlife 3 (2) on page 142, DOI: 10.1016/j.ijppaw.2014.06.001, http://zenodo.org/record/12832888