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- Title
Occurrence and Molecular Identification of Microcotyle sebastis Isolated from Fish Farms of the Korean Rockfish, Sebastes schlegelii.
- Authors
Jun-Young Song; Keun-Yong Kim; Seo-Woo Choi
- Abstract
Microcotyle sebastis is a gill monogenean ectoparasite that causes serious problems in the mariculture of the Korean rockfish, Sebastes schlegelii. In this study, we isolated the parasite from fish farms along the coasts of Tongyeong, South Korea in 2016, and characterized its infection, morphology and molecular phylogeny. The prevalence of M. sebastis infection during the study period ranged from 46.7% to 96.7%, and the mean intensity was 2.3 to 31.4 ind./fish, indicating that the fish was constantly exposed to parasitic infections throughout the year. Morphological observations under light and scanning electron microscopes of the M. sebastis isolates in this study showed the typical characteristics of the anterior prohaptor and posterior opisthaptor of monogenean parasites. In phylogenetic trees reconstructed using the nuclear 28S ribosomal RNA gene and the mitochondrial cytochrome c oxidase I gene (cox1), they consistently clustered together with their congeneric species, and showed the closest phylogenetic relationships to M. caudata and M. kasago in the cox1 tree.
- Subjects
SOUTH Korea; FISH farming; CYTOCHROME oxidase; SCANNING electron microscopes; STRIPED bass; MOLECULAR phylogeny; RIBOSOMAL RNA
- Publication
Korean Journal of Parasitology, 2021, Vol 59, Issue 1, p89
- ISSN
0023-4001
- Publication type
Article
- DOI
10.3347/kjp.2021.59.1.89