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A Hematodinium-like dinoflagellate infection of the Norway lobster Nephrops norvegicus:observations on pathology and progression of infection

1995; Inter-Research; Volume: 22; Linguagem: Inglês

10.3354/dao022115

1616-1580

R. H. Field, PL Appleton,

Aquaculture disease management and microbiota

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 22:115-128 (1995) - doi:10.3354/dao022115 A Hematodinium-like dinoflagellate infection of the Norway lobster Nephrops norvegicus: observations on pathology and progression of infection Field RH, Appleton PL The discovery of a Hematodinium-like dinoflagellate infecting Nephropsnorvegicus has led to a pathological investigation into the effects on the host and the apparent progression of the disease syndrome. The parasite is systemic, invading the haemocoel and the connective tissues of most organs via the haemal spaces. An increase in the combined number of parasites and haemocytes in the haemolymph was due to an increase in the relative proportion of dinoflagellates and suggested a reduction in numbers of haemocytes. These parameters did not correlate directly with severity. Comparison of the level to which tissues were invaded and the relationship between haemocyte and parasite numbers in the haemolymph suggests that at least some organs may be invaded very early in infection, if not before parasites enter the 0haemolymph. There was evidence of host cellular defence reactions, in the form of haemocyte encapsulations in the gills and heart, and phagocytosis of dinoflagellates by the fixed phagocytes of the hepatopancreas. Nephrops norvegicus . Hematodinium spp. . Parasitic dinoflagellate . Crustacea . Pathology Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in DAO Vol. 22, No. 2. Publication date: June 15, 1995 Print ISSN:0177-5103; Online ISSN:1616-1580 Copyright © 1995 Inter-Research.