Myxobolus sp. can cause in vivo myoliquefaction inthe host Paralichthys orbignyanus(Osteichthyes, Paralichthydae)

Eiras, Jorge Costa; Pereira Junior, Joaber; Sampaio, Luís André Nassr de; Robaldo, Ricardo Berteaux; Abreu, Paulo Cesar Oliveira Vergne de


We found intense myoliquefaction in vivo among specimens of wild and farmed South American flatfish Paralichthys orbignyanus Valenciennes, 1839. The soft flesh condition was attributed to Myxobolus sp. since the fish were not infected by myxosporeans which are usually associated with this condition (Kudoa spp.), and other causes (bacteria, fungi) were not found. The histopathology of the infection is described.

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