Scanning Electron Microscopy of Spores of the Myxosporidans Chloromyxum Trijugum Kudo and Chloromyxum Catostomi Kudo*

Listebarger, James K.; Mitchell, Lawrence G.

doi:10.1111/j.1550-7408.1980.tb04673.x

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…Unlike C. cristatum, however, C. auratum had 4 equal polar capsules and mictosporic plasmodia. Moreover, C. auratum spores were larger and had fewer extrasutural ridges than those documented in the type description of C. cristatum as well as the other chloromyxa described from North American cyprinids, including the only junior synonym of C. cristatum reported from North America, Chloromyxum catastomi Kudo, 1919 (see Table I) (Mitchell, 1978;Listebarger and Mitchell, 1980;Lom and Dyková, 1993). Chloromyxum catostomi also has 'polar capsules almost of same size', though Kudo (1919) noted that its striations ran parallel to the sutural ridge, inconsistent with both C. cristatum and C. auratum.…”

Section: Remarksmentioning

confidence: 91%

A New Myxozoan From Feral Goldfish (Carassius Auratus)

Hallett

Atkinson

Holt

et al. 2006

Journal of Parasitology

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In February 2004, a mass die-off of common goldfish Carassius auratus L., presumptively caused by bacterial coldwater disease (Flavobacterium psychrophilum), occurred at Fern Ridge Reservoir, Oregon. A range of size classes was affected, but all mature fish were female and all fish were infected with a single myxozoan, Chloromyxum auratum n. sp. No histological changes were observed associated with the parasite. Infection was represented by mictosporic plasmodia and free-floating spores in the gall bladder. Parasite spores were nearly spherical, 13.6 microm long x 12.6 microm wide x 13.1 microm thick, and possessed 4 equal-sized polar capsules. Spores had a coglike appearance in apical view because of distinct ridges 2.1 microm high protruding from the valve cells. There were 6-9 extrasutural ridges per valve (15-20 ridges per spore), aligned along the longitudinal axis, with some branching, and convergence at both poles. Morphologically, spores identified most closely with Chloromyxum cristatum Léger, 1906; however, 18S rDNA sequence data indicated only 97.5% similarity over 2,076 bp with Chloromyxum cyprini, the only synonym of C. cristatum for which DNA data are available; additional sequence data may reveal the other synonyms to be distinct species. This is the first record of a species of Chloromyxum from goldfish.

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Section: Remarksmentioning

confidence: 91%

A New Myxozoan From Feral Goldfish (Carassius Auratus)

Hallett

Atkinson

Holt

et al. 2006

Journal of Parasitology

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“…References: Listerbarger and Mitchell (1980), Lom and Dyková (1993);phylogeny -Fiala and Dyková (2004).…”

Section: H L O R O M Y X I D a E Thélohan 1892mentioning

confidence: 99%

Myxozoan genera: definition and notes on taxonomy, life-cycle terminology and pathogenic species

Lom¹,

Dyková²

2006

FOLIA PARASIT

704

604

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Abstract.A list of myxozoan genera is presented in the current taxonomical scheme. These genera are defined; their type species and most important pathogens along with their hosts are listed. Simultaneously, definitions of actinospore stages representing sexual stages of the myxosporean life cycle are given; altogether, 17 actinospore collective groups with 180 types have been described. Life cycles of the two classes of the phylum Myxozoa, Malacosporea and Myxosporea, are briefly outlined with specification of the appropriate terms. Up to now, 4 malacosporean and 2,180 myxosporean species assigned to a total of 62 genera, have been established. The surviving classification of myxosporeans, based on spore morphology, is discussed in the context of the still fragmentary data resulting from SSU rDNA sequence analyses. The main task for the future is a rigorous, detailed morphological description combined with molecular techniques in establishment of new species and in revision of the existing ones. Establishment of a classification acceptable from morphological, biological and phylogenetical viewpoints is necessary.

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Ortholinea basma n. sp. (Myxozoa: Myxosporea) from Agile klipfish Clinus agilis (Teleostei: Clinidae), light and scanning electron microscopy

Ali

2000

European Journal of Protistology

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Scanning Electron Microscopy of Spores of the Myxosporidans Chloromyxum Trijugum Kudo and Chloromyxum Catostomi Kudo*

Cited by 4 publications

References 9 publications

A New Myxozoan From Feral Goldfish (Carassius Auratus)

A New Myxozoan From Feral Goldfish (Carassius Auratus)

Myxozoan genera: definition and notes on taxonomy, life-cycle terminology and pathogenic species

Ortholinea basma n. sp. (Myxozoa: Myxosporea) from Agile klipfish Clinus agilis (Teleostei: Clinidae), light and scanning electron microscopy

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