Scuticociliata infection in the weedy sea dragon Phyllopteryx taeniolatus

Umehara, Azusa; Kosuga, Yuko

doi:10.1016/s1383-5769(02)00080-6

Cited by 17 publications

(17 citation statements)

References 2 publications

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“…This sequence (1666 bp) was deposited in GenBank under the accession number GU572375. In the morphological examinations, the present results shared similar characteristics with the scuticociliates identified from weedy sea dragon Phyllopteryx taeniolatus (Umehara et al, 2003) and olive flounder (Song et al, 2009). Based on these descriptions, the ciliates were suggested as of the genus Philasterides.…”

Section: Resultssupporting

confidence: 85%

Identification of scuticociliate Philasterides dicentrarchi from indo-pacific seahorses Hippocampus kuda

Shin¹,

Han²,

Gomez³

et al. 2011

Afr. J. Microbiol. Res.

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The "indo-pacific seahorses", Hippocampus kuda which had been reared in one of the private commercial aquaria for exhibition were sent to the laboratory for diagnosis. Feces and intestinal contents from 5 seahorses were examined microscopically and revealed numerous scuticociliates. We identified the species of scuticociliate by light (wet mount) and scanning electron microscopy, PCR (polymerase chain reaction) and sequencing. This paper reports the first identification of scuticociliate Philasterides dicentrarchi from seahorse in Korea.

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Section: Resultssupporting

confidence: 85%

Identification of scuticociliate Philasterides dicentrarchi from indo-pacific seahorses Hippocampus kuda

Shin¹,

Han²,

Gomez³

et al. 2011

Afr. J. Microbiol. Res.

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“…Based on the morphology of the organism, however, they believed their organism to be in the genus Philasterides, instead of Uronema. 26 Another aquarium reported DNA evidence supporting Philasterides dicentrarchi as the cause of severe scuticociliate infection of both WSD and LSD. 22 Therefore, we consider all ciliate protozoal infections simply as ''scuticociliatosis'' here.…”

Section: Discussionmentioning

confidence: 99%

Pathologic Findings in Weedy (Phyllopteryx taeniolatus) and Leafy (Phycodurus eques) Seadragons

Bonar¹,

Garner

Weber

et al. 2013

Vet Pathol

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A retrospective study of the pathologic findings in weedy (Phyllopteryx taeniolatus) and leafy (Phycodurus eques) seadragons was performed on specimens submitted to 2 reference laboratories from 1994 to 2012 to determine the range and occurrence of diseases affecting aquarium-held populations. One hundred two and 94 total diagnoses were recorded in weedy and leafy seadragons, respectively. Two of the more common etiologic diagnoses in both species were mycobacteriosis and scuticociliatosis, whereas myxozoanosis was common in weedy seadragons. Metazoan parasite infections were less common etiologic diagnoses. There were no correlations between mycobacteriosis and ciliate protozoan infections in either species. Myxozoanosis was usually found in combination with other diseases and, except for 1 case, was restricted to weedy seadragons. Phaeohyphomycosis, nonmycobacterial bacterial infections, and trauma were also important but less frequent diagnoses. Intestinal coccidiosis was found in weedy but not leafy seadragons. Mineralization of the swim bladder was detected in 26 of 197 leafy seadragons and only 2 of 257 weedy seadragons. Although weedy and leafy seadragons share certain diseases of significance to exhibit populations, there are diseases unique to each species about which the veterinary pathologist, clinician, or diagnostician should be aware.

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“…1,3,17 Scuticociliatosis is rarely described in sea dragons and so far reported to be limited to dermal infections. 7,12,19 This report describes the pathology associated with scuticociliatosis in a population of leafy and weedy sea dragons.…”

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confidence: 99%

Severe Scuticociliate (Philasterides dicentrarchi) Infection in a Population of Sea Dragons (Phycodurus eques and Phyllopteryx taeniolatus)

et al. 2008

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Abstract. Scuticociliatosis is a disease of fish induced by ciliated parasites of the genus Scuticociliatida. It has been described in sea horses (Hippocampus sp.), flounders (Paralichthys olivaceus), and turbots (Scophthalmus maximus). Here we present a case study of a population of sea dragons chronically infected with scuticociliates identified as Philasterides dicentrarchi by histopathology and PCR. Beginning in 2004, over a period of 19 months, 10 sea dragons (Phycodurus eques and Phyllopteryx taeniolatus) were found dead in an aquarium of the Zoological Garden Basle, Switzerland. Clinically, the animals showed only faint symptoms of disease over a short period of time. At necropsy, macroscopic lesions were confined to the skin with multiple, often hemorrhagic, ulcerations. Histologically, epidermal ulcers were associated with necrosis and inflammation of the underlying dermis and musculature. Numerous ciliates, with a morphology consistent with scuticociliates, were present in these lesions. In several animals these ciliates had invaded blood vessels and were detected in gills and internal organs including kidney, thyroid gland, and central nervous system (CNS). In these organs, mild degenerative lesions and inflammatory reactions were evident. The ciliates were identified as Philasterides dicentrarchi based on small-subunit ribosomal RNA (SSUrRNA) gene sequences obtained by polymerase chain reaction (PCR) on DNA extracted from paraffin-embedded tissue sections. Our report shows that scuticociliate infections of sea dragons can develop into a systemic infection and that both species of sea dragons can be affected.

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Scuticociliata infection in the weedy sea dragon Phyllopteryx taeniolatus

Cited by 17 publications

References 2 publications

Identification of scuticociliate Philasterides dicentrarchi from indo-pacific seahorses Hippocampus kuda

Identification of scuticociliate Philasterides dicentrarchi from indo-pacific seahorses Hippocampus kuda

Pathologic Findings in Weedy (Phyllopteryx taeniolatus) and Leafy (Phycodurus eques) Seadragons

Severe Scuticociliate (Philasterides dicentrarchi) Infection in a Population of Sea Dragons (Phycodurus eques and Phyllopteryx taeniolatus)

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