Myxobolus saladensis n. sp. Gill Parasite of Mugil liza (Günter, 1880) from Samborombón Bay, Buenos Aires, Argentina

Paula Soledad Marcotegui, Sergio Roberto Martorelli


Myxosporean parasite Myxobolus saladensis n. sp. in the gills of Mugil liza from Samborombón Bay was described by light and electron microscopy studies. Polysporic cyst-like plasmodia containing several spores. The spore were pyriform and binucleated, measuring 10.63±0.36 µm (n=20) long, 9.24±0.50 µm (n=20) wide and 4.13±0.36 µm (n=20) thick. Elongated pyriform polar capsules were of equal size (3.84±0.27 µm long and 2.30±0.12 µm wide. The sporoplasm contained some sporoplasmosomes. Each PC contained a polar filament with 4-5 coils obliquely arranged in relation to the polar capsules axis. The PC wall was composed of two layers of different electron densities. Based on the morphological and ultrastructure differences of the spore to those of previously described species of Myxobolus, we describe a new species named Myxobolus saladensis n. sp. in this study.

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