Molecular and morphological characterization of Dollfustrema bagarii (Digenea: Bucephalidae) metacercariae from aquaculture channel catfish (Ictalurus punctatus) in northern Vietnam

White grub metacercariae were found in the livers and kidneys of diseased specimens of an introduced channel catfish, Ictalurus punctatus (Rafinesque), in Vietnam. Based on morphological features and 28S rDNA sequence analysis, the isolated metacercariae were identified as Dollfustrema bagarii (Dige...

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Bibliographic Details
Published in:Journal of fish diseases 2022-08, Vol.45 (8), p.1165-1171
Main Authors: Kim, Van Van, Nguyen, Hung Manh, Greiman, Stephen E., Nguyen, Ha Van, Nguyen, Chinh Ngoc, Vu, Manh Duc, Hoai, Truong Dinh, Madsen, Henry
Format: Article
Language:English
Subjects:
28S rDNA
Aquaculture
Body organs
Bucephalidae
Catfish
Digenea
Dollfustrema
fish disease
Freshwater fishes
histopathological examination
Histopathology
Ictalurus punctatus
introduced fish
Leukocytes (eosinophilic)
Nucleotide sequence
Organs
phylogenetic analysis
Sequence analysis
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Summary:White grub metacercariae were found in the livers and kidneys of diseased specimens of an introduced channel catfish, Ictalurus punctatus (Rafinesque), in Vietnam. Based on morphological features and 28S rDNA sequence analysis, the isolated metacercariae were identified as Dollfustrema bagarii (Digenea: Bucephalidae) Moravec & Sey. Histopathological examination shows that encysted metacercariae can change the tissue structure of the infected organs and is often accompanied by haemorrhaging and the presence of eosinophilic granular cell infiltration. Degenerative changes were also observed.
ISSN:0140-7775
1365-2761
DOI:10.1111/jfd.13651