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Diseases of Aquatic Organisms

    DAO prepress abstract   -  DOI:

    Supplementary data for Myxidium cf. rhodei infecting the kidney of Rutilus rutilus: morphological, histological and molecular characterization

    Marina Dashi-Dorjievna Batueva, Xiaoyi Pan, Jinyong Zhang, Xinhua Liu, Wu Wei, Yang Liu*

    *Corresponding author:

    ABSTRACT: In the present study, Myxidium cf. rhodei Léger, 1905 was supplemented by its morphological, histological and molecular characterization. M. cf. rhodei was observed in the kidneys of 918 out of 942 (97%) roach Rutilus rutilus (Linnaeus, 1758). Myxospores of M. cf. rhodei were fusiform with pointed ends, measuring 12.7 ± 0.1 (11.8–13.4) μm in length and 4.6 ± 0.1 (3.8–5.4) μm in width. Two similar pear-shaped polar capsules were positioned at either ends of the longitudinal axis of the myxospore: each of these capsules measured 4.0 ± 0.1 (3.1–4.7) μm in length and 2.8 ± 0.1 (2.0–4.0) μm in width. Polar filaments were coiled into 4 to 5 turns. Approximately 18–20 longitudinal straight ridges were observed on the myxospore surface. The suture line was straight and distinctive, running near the middle of the valves. Histologically, the plasmodia of the present species were found in the Bowman’s capsules and rarely in the interstitium of the host. Phylogenetic analysis revealed that M. cf. rhodei was sister to M. anatidum in the Myxidium clade including most of Myxidium species from freshwater hosts.