Epitheliocystis in the leafy sea‐dragon

Langdon, J. S.; Elliott, K.; MacKay, Bruce R.

doi:10.1111/j.1751-0813.1991.tb03219.x

Cited by 17 publications

(28 citation statements)

References 3 publications

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“…The epitheliocystis cysts we found in the gills of all three species were similar in dimension as previously reported in these (10,19) and other (13,26,29) species. A proliferative response was only found in silver perch as described previously (10), and it was similar to that in Atlantic salmon (6).…”

Section: Discussionsupporting

confidence: 89%

“…A case of epitheliocystis in leafy seadragon (Phycodurus eques) that was previously reported (19) was further analyzed by applying molecular methods on archived paraffin-embedded gills from 1991. The material originated from a captive leafy seadragon, originally from the Esperance area, Australia, that died after a Vibrio septicemia.…”

Section: Specimensmentioning

confidence: 99%

“…The material originated from a captive leafy seadragon, originally from the Esperance area, Australia, that died after a Vibrio septicemia. At necropsy, epitheliocystis of the gills was ob-served, and by electron microscopy chlamydia-like, as well as rickettsia-like, stages were observed in the cysts (19).…”

Section: Specimensmentioning

confidence: 99%

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Molecular Evidence for Association of Chlamydiales Bacteria with Epitheliocystis in Leafy Seadragon ( Phycodurus eques ), Silver Perch ( Bidyanus bidyanus ), and Barramundi ( Lates calcarifer )

Meijer

Roholl

Ossewaarde

et al. 2006

Appl Environ Microbiol

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Epitheliocystis in leafy seadragon (Phycodurus eques), silver perch (Bidyanus bidyanus), and barramundi (Lates calcarifer), previously associated with chlamydial bacterial infection using ultrastructural analysis, was further investigated by using molecular and immunocytochemical methods. Morphologically, all three species showed epitheliocystis cysts in the gills, and barramundi also showed lymphocystis cysts in the skin. From gill cysts of all three species and from skin cysts of barramundi 16S rRNA gene fragments were amplified by PCR and sequenced, which clustered by phylogenetic analysis together with other chlamydia-like organisms in the order Chlamydiales in a lineage separate from the family Chlamydiaceae. By using in situ RNA hybridization, 16S rRNA Chlamydiales-specific sequences were detected in gill cysts of silver perch and in gill and skin cysts of barramundi. By applying immunocytochemistry, chlamydial antigens (lipopolysaccharide and/or membrane protein) were detected in gill cysts of leafy seadragon and in gill and skin cysts of barramundi, but not in gill cysts of silver perch. In conclusion, this is the first time epitheliocystis agents of leafy seadragon, silver perch and barramundi have been undoubtedly identified as belonging to bacteria of the order Chlamydiales by molecular methods. In addition, the results suggested that lymphocystis cysts, known to be caused by iridovirus infection, could be coinfected with the epitheliocystis agent.

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Section: Discussionsupporting

confidence: 89%

Section: Specimensmentioning

confidence: 99%

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Molecular Evidence for Association of Chlamydiales Bacteria with Epitheliocystis in Leafy Seadragon ( Phycodurus eques ), Silver Perch ( Bidyanus bidyanus ), and Barramundi ( Lates calcarifer )

Meijer

Roholl

Ossewaarde

et al. 2006

Appl Environ Microbiol

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“…Similarly, epitheliocystis was observed in 4 weedy seadragons but not in any leafy seadragons. Epitheliocystis has previously been reported in the leafy seadragon, 13 with molecular evidence associating Chlamydiales bacteria with the infection. 17 By far the most serious infectious diseases affecting WSD and LSD are scuticociliatosis, mycobacteriosis, and infection by melanized fungi (eg, Exophiala spp).…”

mentioning

confidence: 82%

“…Affected bladders were sometimes hyperinflated, and fish often displayed clinical buoyancy abnormalities (Figs. [13][14][15][16]. There was usually no associated inflammatory infiltrate or evidence of infectious organisms; however, there were sometimes inflammatory lesions in other organs (such as scuticociliatosis Figure 1.…”

Section: Swim Bladder Mineralizationmentioning

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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Effects of epitheliocystis on serum lysozyme activity and osmoregulation in cultured juvenile striped trumpeter, Latris lineata (Forster)

Lai¹,

Crosbie²,

Battaglene³

et al. 2013

Aquaculture

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Epitheliocystis in the leafy sea‐dragon

Cited by 17 publications

References 3 publications

Molecular Evidence for Association of Chlamydiales Bacteria with Epitheliocystis in Leafy Seadragon ( Phycodurus eques ), Silver Perch ( Bidyanus bidyanus ), and Barramundi ( Lates calcarifer )

Molecular Evidence for Association of Chlamydiales Bacteria with Epitheliocystis in Leafy Seadragon ( Phycodurus eques ), Silver Perch ( Bidyanus bidyanus ), and Barramundi ( Lates calcarifer )

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

Effects of epitheliocystis on serum lysozyme activity and osmoregulation in cultured juvenile striped trumpeter, Latris lineata (Forster)

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