Antiprotozoals effective in vitro against the scuticociliate fish pathogen Philasterides dicentrarchi.

Occurrence of scuticociliatosis in olive flounder Paralichthys olivaceus by Phiasterides dicentrarchi (Ciliophora: scuticociliatida).

In the course of identifying scuticociliates recently obtained from systemically infected olive flounder Paralichthys olivaceus in Korea, we found a scuticociliate species whose small subunit ribosomal RNA (SS rRNA) gene was not amplified by species-specific primers previously designed for Uronema marinum and Pseudocohnilembus persalinus. By studying morphological characteristics of wet-mounted...

Histopathology and Mortality in Olive Flounder Infected by Scuticociliatosis caused by Philasterides dicentrarchi

The histophagous scuticociliate, Philasterides dicentrarchi, infects Korean olive flounder, Paralichthys olivaceus, cultured on Jeju Island in South Korea, causing significant economic losses. However, its route of entry is yet unknown. In the present study, we experimentally infected olive flounder by immersion or injection of different concentrations of P. dicentrarchi. Cumulative mortality w...

Phylogenetic consideration of two scuticociliate genera, Philasterides and Boveria (Protozoa, Ciliophora) based on 18 S rRNA gene sequences.

Many scuticociliates are facultative parasites of aquatic organisms and are among the most problematic ciliate taxa regarding their systematic relationships. The main reason is that most species, especially taxa in the order Thigmotrichida have similar morphology and have not been studied yet using molecular methods. In the present work, two scuticociliate genera, represented by two rare parasi...

Short communication:In vitro screening of Sonneratia alba extract against the oomycete fish pathogen, Aphanomyces invadans

Experimental Scuticociliatosis in Japanese flounder (Paralichthys olivaceus) infected with Miamiensis avidus: pathological study on the possible neural routes of invasion and dissemination of the scuticociliate inside the fish body.

Japanese flounder (Paralichthys olivaceus) were experimentally infected with the highly pathogenic scuticociliate Miamiensis avidus (syn. Philasterides dicentrarachi) using the immersion method to clarify/identify the possible neural routes of entry and possible ways of dissemination of the scuticociliate in the fish body. Scuticociliates were observed on the skin and gills right from day 0-1 p...