Molecular identification of Uronema marinum (Protozoa, Ciliophora, ‎Scuticociliatia) in cultured turbot (Psetta maxima) larvae‎

Document Type : Short Communication


Department of Fisheries Health, Central Fisheries Research Institute, Trabzon, Turkey


Scuticociliates are dangerous parasitic pathogens causing systemic tissue destruction and high mortality in marine fish worldwide. In this study, the first identification of Uronema marinum (Ciliophora, Scuticociliatida) from cultured turbot (Psetta maxima) larvae using mitochondrial cytochrome c oxidase 1 (cox1) gene sequence as well as species-specific primers was reported. The mean prevalence values of infected fish were calculated, and partial sequencing obtained from the mitochondrial cox1 gene region was also compared with isolates registered in the Genbank database. The sequence comparison showed 93.00% identity to U. marinum, and the parasite has also been deposited in the GenBank database. This study is the first case of U. marinum infection in Turkish marine aquaculture, contributing to the systematics and molecular epidemiology of scuticociliate in Turkey.


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Volume 12, Issue 1
March 2021
Pages 121-124
  • Receive Date: 25 June 2019
  • Revise Date: 07 January 2020
  • Accept Date: 08 January 2020
  • First Publish Date: 28 December 2020