title: Gross and microscopic pathological changes associated with parasitic infection in European eel (Anguilla anguilla, Linnaeus 1758).
abstract: The gross pathological and histopathological changes associated with parasitic infection in the European eel (Anguilla anguilla Linnaeus, 1758) was investigated. A total of 65 eels collected from three sampling localities in Eastern Delta, Egypt were examined over the period of January-May 2008. The fish were subjected to standard procedures for parasitological and pathological examinations. Overall, 22 (33.8%) of the 65 fish examined were found to have parasitic infections. The eels harbored a total of six parasite species; among them, the nematode Anguillicoloides crassus was the most prevalent species (10.7%), followed by the Monogenea Pseudodactylogyrus anguillae (7.7%) and Dactylogyrus species (6.1%), the ciliate Trichodinella epizootica (4.6%), the Myxozoa Myxidium giardi (3.1%), and the cestode Proteocephalus macrocephalus (1.5%). Affected fish showed varying levels of tissue damage and pathological alterations including mild to severe degenerative, necrotic, and inflammatory changes in the affected organs.
authors: Department of Pathology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt.
authors: A A
authors: AA
authors: Abdelmonem
authors: M M
authors: MM
authors: Metwally
authors: H S
authors: HS
authors: Hussein
authors: Hany M
authors: HM
authors: Elsheikha
mesh_terms: D000811:Anguilla / Q000033:anatomy & histology / Q000469:parasitology*; D000818:Animals; D004534:Egypt; D006651:Histocytochemistry; D010271:Parasites / Q000145:classification* / Q000302:isolation & purification*; D010273:Parasitic Diseases, Animal / Q000469:parasitology / Q000473:pathology*; D015995:Prevalence