Morphological and molecular characterization of Ceratomyxa gurnardi sp. n. (Myxozoa: Ceratomyxidae) infecting the gallbladder of the grey gurnard Eutrigla gurnardus (L.) (Scorpaeniformes, Triglidae)

Sobecka, Ewa; Szostakowska, Beata; Ziętara, Marek S.; Więcaszek, Beata

doi:10.1007/s00436-012-3193-2

Cited by 6 publications

(4 citation statements)

References 16 publications

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“…This placement disagrees with previous studies that suggest a common ancestor for Ceratomyxa species infecting sparid hosts, as well as their clustering according to geographical location[11], since Ceratomyxa auratae n. sp. clusters closely with species described from Australian waters[15,[42][43][44] and C. gurnardi from the Atlantic Ocean off Scotland[45]. The inclusion of C. gurnardi in this clade is, however, dubious since its sequence is rather small (949 bp) in comparison to all the other ceratomyxid SSU rRNA sequences used in the phylogenetic analysis, which account for at least 1300 bp.…”

supporting

confidence: 68%

“…2 Sparus aurata, Ceratomyxa sp.ex Diplodus annularis)[11,41], but rather within a sister subclade containing Ceratomyxa spp. that infect fish hosts of the families Triglidae (C. gurnardi), Apogonidae (C. rueppellii, C. ostorhinchi and C. cyanosomae), Serranidae (C. gleesoni), Lethrinidae (C. hallettae) andLabridae (C. thalassomae) of the order Perciformes[15,[42][43][44][45], as well as of the family Mugilidae (C. robertsthomsoni) of the order Mugiliformes[15]. Ceratomyxa arabica, which was also reported from the gall bladder of a sparid fish host, Acanthopagrus bifasciatus, in the Arabian Gulf in Saudi Arabia[31], also clusters in a separate subclade.…”

mentioning

confidence: 99%

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Ultrastructure and phylogeny of Ceratomyxa auratae n. sp. (Myxosporea: Ceratomyxidae), a parasite infecting the gilthead seabream Sparus aurata (Teleostei: Sparidae)

Rocha

Casal

Rangel

et al. 2015

Parasitology International

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A new myxosporean parasite is described from the gall bladder of the gilthead seabream Sparus aurata in a Southern Portuguese fish farm, with basis on light and transmission electron microscopy, as well as in molecular procedures. In the bile, young and mature mono- to disporic plasmodia were elliptical and presented smooth surface membranes. Crescent-shaped myxospores measured 6.7±0.7 (5.3-7.6) μm in length and 27.0±3.0 (19.7-31.2) μm in thickness. The myxospore wall was constituted by two symmetrical valves united along a slightly curved suture line, each presenting a lateral projection with a rounded end. Two equal-sized subspherical polar capsules, measuring 3.6±0.2 (2.9-3.8) μm in length and 3.5±0.3 (2.9-3.8) μm in width, were located at the same level, each displaying a polar filament coiled in 5 turns. Molecular analysis of the SSU rRNA gene confirmed the parasite as a new member of the genus Ceratomyxa, making this the fourth report of Ceratomyxa from the gall bladder of S. aurata in the Iberian Peninsula. This reinforces the assumption that species richness of ceratomyxids in South European sparids is high, but the phylogenetic analysis performed disagrees with the existence of a common ancestor for Ceratomyxa species infecting sparid hosts, as well as their clustering according to geographical location. The main Ceratomyxa clade is not monophyletic due to the inclusion of Palliatus indecorus and Pseudoalatospora kovalevae; a situation that will probably be resolved by the taxonomic revision of these genera.

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supporting

confidence: 68%

mentioning

confidence: 99%

Ultrastructure and phylogeny of Ceratomyxa auratae n. sp. (Myxosporea: Ceratomyxidae), a parasite infecting the gilthead seabream Sparus aurata (Teleostei: Sparidae)

Rocha

Casal

Rangel

et al. 2015

Parasitology International

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“…It is possible that, having relied solely on LM observations, the previous description considered only 1 of the 2 polar filament rows, thus presenting a smaller number of coils. The occurrence of aberrant spores with 3 valves and 3 polar capsules has been documented for other species of the genus, such as C. bassoni Abdel-Ghaffar et al, 2008, C. protopsettae Fujita, 1923, and C. gurnardi Sobecka et al, 2013(Cho et al 2004, Abdel-Ghaffar et al 2008, Sobecka et al 2013). Co-infections of C. diplodae and C. labracis were observed in infected specimens, with the parasites being differentiated on the basis of morphological and molecular information.…”

Section: Discussionmentioning

confidence: 99%

Ultrastructure and phylogeny of Ceratomyxa diplodae (Myxosporea: Ceratomyxidae), from gall bladder of European seabass Dicentrarchus labrax

Rocha

Rangel²,

Castro³

et al. 2016

Dis. Aquat. Org.

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The myxosporean parasite Ceratomyxa diplodae Lubat et al. 1989 sensu Sitjà-Bobadilla & Álvarez-Pellitero, 1993, originally described from the annular seabream Diplodus annularis in the Adriatic Sea, has subsequently been reported from several other sparid hosts, and also a moronid fish, the European seabass Dicentrarchus labrax from the Mediterranean Sea. Here, molecular identity and additional morphological data are given for this parasite infecting the gall bladder of D. labrax in a southern Portuguese fish farm. In the bile, disporic plasmodia were spherical to subspherical with a smooth surface membrane. Most myxospores were crescentshaped, 5.1 ± 0.5 (4.8−6.7) µm long (mean ± SD) and 21.9 ± 1.0 (20.4−23.9) µm thick; a few were more arcuate, 5.7 ± 0.4 (5.3−6.3) µm long and 17.3 ± 1.0 (16.3−19.1) µm thick. The wall consisted of 2 symmetrical valves united along a slightly curved suture line, with moderately tapering to rounded ends. Two spherical polar capsules, measuring 2.9 ± 0.3 (2.5−3.4) µm in diameter, contained a polar filament forming 8 to 9 coils organized in 2 rows. Host species, tissue tropism, and myxospore morphology supported species identification. Phylogenetic analyses of the small subunit ribosomal RNA sequence positioned the parasite among most sparid-infecting Ceratomyxa spp., suggesting the existence of a common ancestor for these species. The acquisition of molecular data from infections of C. diplodae in its original host and in other sparids is essential in order to ascertain if the morphological and biological variations found among reports of this parasite are intra-or inter-specific.

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“…There are two sub‐spherical polar capsules near the sutural line at the anterior pole of the spore (Sobecka et al. ). Binucleate sporoplasm does not fill the spore cavity completely, and, in some species, two uninucleate sporoplasms have been reported (Lom and Dykova ).…”

mentioning

confidence: 99%

Molecular and Morphometric Characteristics of Ceratomyxa hamour n. sp. (Myxosporea: Bivalvulida) Infecting the Gallbladder of the Orange‐spotted Grouper Epinephelus coioides from the Arabian Gulf, Saudi Arabia

Mansour

Al-Qahtani

Al‐Quraishy

et al. 2014

J Eukaryotic Microbiology

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Ceratomyxa hamour n. sp. was found to infect the gallbladder of the orangespotted grouper, Epinephelus coioides located off the Saudi Arabian coast of the Arabian Gulf. The infection was reported as a free-floating spore in the bile, and pseudoplasmodia were not observed. Mature spores were crescentshaped and measured on average 7 lm in length and 16 lm in thickness. The polar capsule, meanwhile, had length to width measurements of 4 lm and 3 lm on average. A periodical survey was conducted throughout a sampling period between December 2012 and December 2013, with the results showing that the parasite was present throughout the year with a mean prevalence of 32.6%. The objective of this study was to characterize this new species based on its morphological and molecular differences from previously described species. Molecular analysis based on the partial sequence of the SSU rDNA gene, showed the highest similarity (97.8%) to Ceratomyxa buri, reported in the cultured yellow tail Seriola quinqueradiata in Japan. Indeed, C. buri and the new species described here formed an individual cluster with a high degree of bootstrap support. This is the first reported species of genus Ceratomyxa from the Arabian Gulf fishes off Saudi Arabia.

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Morphological and molecular characterization of Ceratomyxa gurnardi sp. n. (Myxozoa: Ceratomyxidae) infecting the gallbladder of the grey gurnard Eutrigla gurnardus (L.) (Scorpaeniformes, Triglidae)

Cited by 6 publications

References 16 publications

Ultrastructure and phylogeny of Ceratomyxa auratae n. sp. (Myxosporea: Ceratomyxidae), a parasite infecting the gilthead seabream Sparus aurata (Teleostei: Sparidae)

Ultrastructure and phylogeny of Ceratomyxa auratae n. sp. (Myxosporea: Ceratomyxidae), a parasite infecting the gilthead seabream Sparus aurata (Teleostei: Sparidae)

Ultrastructure and phylogeny of Ceratomyxa diplodae (Myxosporea: Ceratomyxidae), from gall bladder of European seabass Dicentrarchus labrax

Molecular and Morphometric Characteristics of Ceratomyxa hamour n. sp. (Myxosporea: Bivalvulida) Infecting the Gallbladder of the Orange‐spotted Grouper Epinephelus coioides from the Arabian Gulf, Saudi Arabia

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