Heterosporis anguillarum infections in farm cultured eels (Anguilla japonica) in Korea.
Ten eels (Anguilla japonica) from a fish farm in Korea were examined and diagnosed with a Heterosporis infection. The gross lesions on the trunk were uneven and the concave parts were pasty. Histopathologically, lyses of the trunk muscles, degenerative muscle fibers and the scattered spores were observed. The sporophorocyst (SPC) contained several spores with a variety of shapes. Some SPC were disrupted and the spores in the SPC were scattered in the muscle tissues. Macrophages existed near the scattered spores. Electron microscopy revealed special structures such as sporophorocyst containing various developmental parasitic stages such as meronts, sporonts, sporophorous vesicles and spores.
Joh
Seong Joon
SJ
National Veterinary Research and Quarantine Service, Ministry of Agriculture and Forestry, Anyang, Korea. johsj@nvrqs.go.kr
Kwon
Yong Kuk
YK
Kim
Min Chul
MC
Kim
Min Jeong
MJ
Kwon
Hyuk Man
HM
Park
Jung Won
JW
Kwon
Jun Hun
JH
Kim
Jae Hong
JH
D000811:Anguilla; D000818:Animals; D017756:Aquaculture; D005393:Fish Diseases / Q000469:parasitology* / Q000473:pathology; D006651:Histocytochemistry / Q000662:veterinary; D007723:Korea; D017348:Microscopy, Electron, Scanning Transmission / Q000662:veterinary; D016814:Microsporidia / Q000254:growth & development* / Q000648:ultrastructure; D016881:Microsporidiosis / Q000469:parasitology / Q000473:pathology / Q000662:veterinary*; D009135:Muscular Diseases / Q000469:parasitology / Q000473:pathology / Q000662:veterinary*