Amebiasis in Goldfish

Voelker, F. A.; Anver, Miriam R.; McKee, Adam E.; Casey, Harold W.; Brenniman, Gary R.

doi:10.1177/030098587701400307

Cited by 26 publications

(23 citation statements)

References 14 publications

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“…Spontaneous amoebic infections characterised by granulomatous organ lesions were described in goldfishes for the first time by Voelker et al (1977). Similar infections were briefly described by Lom and Dyková (1992) and Steinhagen et al (1993).…”

Section: Systemic Infections Of Fish Caused By Amoebaementioning

confidence: 53%

Advances in the knowledge of amphizoic amoebae infecting fish

Dyková¹,

Lom²

2004

FOLIA PARASIT

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Abstract. Free-living amoebae infecting freshwater and marine fish include those described thus far as agents of fish diseases, associated with other disease conditions and isolated from organs of asymptomatic fish. This survey is based on information from the literature as well as on our own data on strains isolated from freshwater and marine fish. Evidence is provided for diverse fish-infecting amphizoic amoebae. Recent progress in the understanding of the biology of Neoparamoeba spp., agents responsible for significant direct losses in Atlantic salmon and turbot industry, is presented. Specific requirements of diagnostic procedures detecting amoebic infections in fish and taxonomic criteria available for generic and species determination of amphizoic amoebae are analysed. The limits of morphological and non-morphological approaches in species determination are exemplified by Neoparamoeba, Vannella and Platyamoeba spp., which are the most common amoebae isolated from fish gills, Acanthamoeba and Naegleria spp. isolated from various organs of freshwater fish, and by other unique fish isolates of the genera Nuclearia, Thecamoeba and Filamoeba. Advances in molecular characterisation of SSU rRNA genes and phylogenetic analyses based on their sequences are summarised. Attention is particularly given to specific diagnostic tools for fish-infecting amphizoic amoebae and ways for their further development.

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Section: Systemic Infections Of Fish Caused By Amoebaementioning

confidence: 53%

Advances in the knowledge of amphizoic amoebae infecting fish

Dyková¹,

Lom²

2004

FOLIA PARASIT

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“…However, the ability of other limax amoebae to colonise fish and elicit disease has been established. For example, an undetermined hartmannellid amoeba has been associated with amoebiasis in goldfish (Voelker et al 1977). Furthermore, a limax vahlkamfiid, Heteramoeba sp.…”

Section: Discussionmentioning

confidence: 99%

Neoparamoeba sp. and other protozoans on the gills of Atlantic salmon Salmo salar smolts in seawater

Bermingham¹,

Mulcahy²

2007

Dis. Aquat. Org.

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Protozoan isolates from the gills of marine-reared Atlantic salmon Salmo salar smolts were cultured, cloned and 8 dominant isolates were studied in detail. The light and electron-microscopical characters of these isolates were examined, and 7 were identified to the generic level. Structure, ultrastructure, a species-specific immunofluorescent antibody test (IFAT), and PCR verified the identity of the Neoparamoeba sp. isolate. Five other genera of amoebae, comprising Platyamoeba, Mayorella, Vexillifera, Flabellula, and Nolandella, a scuticociliate of the genus Paranophrys, and a trypanosomatid (tranosomatid-bodonid incertae sedis) accompanied Neoparamoeba sp. in the gills.

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“…Systemic granuloma in goldfish Carassius auratus has been reported from North America (Voelker et al 1977), Europe (Lom & Dykova 1992, Steinhagen et al 1993 and Israel (Landsberg & Paperna 1992). Large grey nodular lesions occur first in the kidneys and then spread to the spleen, while the liver is only mildly affected.…”

Section: Introductionmentioning

confidence: 99%

Ultrastructure of the aetiological agent of systemic granuloma in goldfish

Paperna¹,

Sh²

1996

Dis. Aquat. Org.

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A fine structural investigation of the causative organisms of systemic granuloma in goldf~s h Carassius auratus revealed single-nucleate amoeboid organisms which were either intracellular, enclosed within a parasitophorous vacuole, or intercellular, embedded in an electron-dense matrix, presumably residues of defunct host cells. The nucleolemma-bound nucleus contained a large centrally positioned nucleolus. The cytoplasm contained ribosomal aggregates, endoplasmic reticulum and numerous adjunct thick-walled vesicles. Mitochondria were absent. Large cytoplasmic inclusions contained electron dense deposits. Additionally, cytoplasmic ribosome-rich bodies differentiated from the cytoplasm, segregating into an invagination of the organism's body wall and apparently were becoming confluent with the parasitophorous vacuole. The taxonomic and biological affinities of these organisms are discussed through comparison with similar Dermocystidium-like and amoeboid aetiological agents from fish.

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Amebiasis in Goldfish

Cited by 26 publications

References 14 publications

Advances in the knowledge of amphizoic amoebae infecting fish

Advances in the knowledge of amphizoic amoebae infecting fish

Neoparamoeba sp. and other protozoans on the gills of Atlantic salmon Salmo salar smolts in seawater

Ultrastructure of the aetiological agent of systemic granuloma in goldfish

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