TETRAMICRA-BREVIFILUM (MATTHEWS-AND-MATTHEWS, 1980) (MICROSPORIDA, TETRAMICRIIDAE) IN A NEW FISH HOST, LOPHIUS-BUDEGASSA (SPINOLA, 1807) INSPAIN

Tetramicra brevifilum, a microsporidian parasite of Scophthalmus maxim us, was found in Lophius budegassa for the first time. This parasite w as detected in 5 of 199 hosts captured in the coastal waters of Barcel ona (Northwest Mediterranean), which enlarges the geographic distribut ion of this microsporidian. Affected fish did not show any external si gn of disease, and cysts of T. brevifilum were found associated with t he body musculature but were easily differentiated from those of Sprag uea lophii, another microsporidian present in this host. A case of sim ultaneous infection by bath T. brevifilum and S. lophii was found.