NEW SPECIES OF THE GENERA ZSCHOKKELLA AND ORTHOLINEA (MYXOZOA) FROM THE SOUTHEAST-ASIAN TELEOST FISH, TETRAODON-FLUVIATILIS

Three new myxosporean species are described from Tetraodon Fluviatilis (Osteichthyes Tetraodontidae) imported from Southern Asia to the Czec h Republic Zschokkella tetrafluvi sp.n. lives in the gall bladder. Di- or monosporic plasmodia produce ellipsoidal spores averaging 11.3 X 7 .2 mu m. In the process of maturation, immature subspherical spores as sume elongated shape. In both species, extremely curved suture line do es not bisect poles of the spore. Ortholinea tetrafluvi sp. n. occurs as a rule in mixed infections with Z. pleomorpha sp. n. in the renal t ubules. Mono- to polysporic plasmodia produce spores with a wide anter ior and a narrow posterior end, averaging 8.3 x 7.8 mu m. Both Z. pleo morpha sp.n. and O.tetrafluvi sp. n. have also limited number of stage s located within the renal tubule epithelium, where they can complete sporogony. In one of the fish specimens, a myxosporean tentatively ide ntified with Sinuolinea tetraodoni El-Matbouli et Hoffmann, 1994 was f ound. A new genus is proposed for Ortholinea alata Kent et Moser, 1990 - Kentmoseria gen. n., and its diagnosis is presented.