Portal de Periódicos da CAPES

mmunohistochemistry, ultrastructure and pathology of gills of Abramis brama from Lake Mondsee, Austria, infected with Ergasilus sieboldi (Copepoda)

2003; Inter-Research; Volume: 53; Linguagem: Inglês

10.3354/dao053257

1616-1580

Bahram Sayyaf Dezfuli, Luisa Giari, R Konecni, Peter Jaeger, Maurizio Manera,

Environmental Toxicology and Ecotoxicology

DAO Diseases of Aquatic Organisms Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsSpecials DAO 53:257-262 (2003) - doi:10.3354/dao053257 Immunohistochemistry, ultrastructure and pathology of gills of Abramis brama from Lake Mondsee, Austria, infected with Ergasilus sieboldi (Copepoda) Bahram Sayyaf Dezfuli1,*, Luisa Giari1, Robert Konecny2, Paul Jaeger3, Maurizio Manera4 1Department of Biology, University of Ferrara, Via Borsari 46, 44100 Ferrara, Italy 2Department of Limnology, Institute of Ecology and Conservation Biology, University of Wien, Althanstraße 14, 1090 Wien, Austria 3Land Salzburg, Referat 13/04‹Gewässerschutz Postfach 527, 5010 Salzburg, Austria 4Department of Structure, Functions, Animal Pathology and Biotechnology, University of Teramo, Pizza Aldo Moro 45, 64100 Teramo, Italy *Email: dzb@dns.unife.it ABSTRACT: Immunohistochemical, ultrastructural and pathological studies were carried out on the gills of bream Abramis brama (L.) from Lake Mondsee, Austria, that were naturally infected with Ergasilus sieboldi Nordmann, 1832. Of a total of 14 specimens of bream examined, the gills of 7 (50%) were parasitized with this copepod and the intensity of infection ranged from 1 to 23 crustaceans per host. Histopathological investigations of infected gill showed extensive tissue damage due to attachment and feeding of the crustacean. Parasites attached close to the base of filaments near the gill arch. Pressure exerted by the ectoparasite attached to the lateral margin of the gill filaments induced atrophy of the secondary lamellae. Tissue reactions included hyperplasia and mucous cell proliferation of the respiratory epithelium. Mucous cells displayed an intense immunohistochemical reactivity with the anti-nitric oxide synthase antibody. In parasitized primary and secondary lamellae, a high number of eosinophilic granular cells and rodlet cells were noticed. Rodlet cells represent an inflammatory cell type closely linked to other piscine inflammatory cells. Presence of a high number of inflammatory cells at the site of E. sieboldi attachment is related to intense host cellular reaction. KEY WORDS: Ergasilus sieboldi infection · Immunohistochemistry · Ultrastructure · Cellular responses · Gill · Abramis brama Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in DAO Vol. 53, No. 3. Online publication date: February 27, 2003 Print ISSN: 0177-5103; Online ISSN: 1616-1580 Copyright © 2003 Inter-Research.