Ellipsomyxa syngnathi sp. n. (Myxozoa, Myxosporea) in the pipefish Syngnathus typhle and S. rostellatus (Teleostei, Syngnathidae) from Denmark

Køie, Marianne; Karlsbakk, Egil

doi:10.1007/s00436-009-1598-3

Cited by 17 publications

(11 citation statements)

References 12 publications

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“…Of these, only the sequence of Z. nova has been linked to its correspondent actinosporean stage (Uspenskaya 1995). A 17th SSU rDNA sequence ter med Z. mugilis Sitjà-Bobadilla & Al va rez-Pellitero, 1993 remains in GenBank; however, this species was recently revised to Ellipsomyxa mugilis (Køie & Karlsbakk 2009), having also been linked to its correspondent actinosporean stage developing in an estuarine polychaete (Rangel et al 2009(Rangel et al , 2012. Overall, the molecular information regarding Myxo sporea has revealed the existence of 2 main clades dividing freshwater and marine species (Kent et al 2000, Fiala 2006, Bartošová et al 2009, Holzer et al 2010, for which myxosporean parasites infecting anadromous hosts, as well as some species of Henneguya, Chloromyxum, Ceratomyxa, Myxo bolus, Myxidium, Parvicapsula, and Sphaero myxa, constitute exceptions (Diamant et al 2004, Fiala 2006, Rocha et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Ultrastructural and phylogenetic description of Zschokkella auratis sp. nov. (Myxozoa), a parasite of the gilthead seabream Sparus aurata

Rocha¹,

Casal²,

Rangel³

et al. 2013

Dis. Aquat. Org.

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A new myxosporean, Zschokkella auratis sp. nov., infecting the gall bladder of the gilthead seabream Sparus aurata in a southern Portuguese fish farm, is described using microscopic and molecular procedures. Plasmodia and mature spores were observed floating free in the bile. Plasmodia, containing immature and mature spores, were characterized by the formation of branched glycostyles, apparently due to the release of segregated material contained within numerous cytoplasmic vesicles. Mature spores were ellipsoidal in sutural view and slightly semicircular in valvular view, with rounded ends, measuring 9.5 ± 0.3 SD (8.7−10.3) µm in length and 7.1 ± 0.4 (6.5−8.0) µm in width/thickness. The spore wall was composed of 2 symmetrical valves united along a slightly curved suture line, each displaying 10 to 11 elevated surface ridges. Two equal subspherical polar capsules, 3.7 ± 0.3 (3.0−4.1) µm long and 3.0 ± 0.2 (2.6−3.2) µm wide, were located separately at the spore's extremities. Each polar capsule contained a polar filament forming 4 to 5 coils. The sporoplasm was binucleate and contained numerous sporoplasmosomes. Morphological data, tissue tropism, and molecular analysis of the small subunit rDNA gene identified this parasite as a new species of Zschokkella. Maximum parsimony, neighbor-joining, and maximum likelihood inferences clustered the parasite in a subclade containing other Zschokkella species parasitizing the gall bladder of brackish and marine fish hosts, located within the coelozoic clade of the major freshwater clade; this supports the existence of a marine subclade within the 'freshwater' clade, as well as the existence of a correlation between tissue tropism and myxosporean phylogeny.

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Section: Introductionmentioning

confidence: 99%

Ultrastructural and phylogenetic description of Zschokkella auratis sp. nov. (Myxozoa), a parasite of the gilthead seabream Sparus aurata

Rocha¹,

Casal²,

Rangel³

et al. 2013

Dis. Aquat. Org.

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“…are distinctly greater in all dimensions than all previously described species of Ellipsomyxa (Table 2) Phylogenetic analyses using partial sequences of the SSU rRNA gene, confirmed the monophyly of the genus Ellispomyxa with a high bootstrap support. One of the two main subclades of Ellipsomyxa is formed by species recently reported exclusively in Australia (E. nigropunctatis, E. manilensis, E. arothroni and E. apogoni) whereas the second subclade is formed by E. mugilis, E. gobii, E. syngnathi and E. adlardi, reported from other different localities in the Mediterranean, North East Atlantic (Øresund) and Lake Pontchartrain (USA) respectively (Køie, 2003;Køie & Karlsbakk, 2009;Whipps & Font, 2013;Heiniger & Adlard, 2014). Interestingly, the new species E. kalthoumi appears as a basal sister taxon of the ''Australian'' subclade whereas E. mugilis clustered within the second subclade grouping the ''non-Australian species''.…”

Section: Discussionmentioning

confidence: 98%

“…The designation of this species to the genus Zschokkella Auerbach, 1909 was based only on the spore morphometry. After erecting the genus Ellipsomyxa Køie, 2003 (Ceratomyxidae) and using SSU rDNA sequence data, Z. mugilis was transferred to Ellipsomyxa as E. mugilis (see Køie & Karlsbakk, 2009). The morphology and spore measurements reported in the present study agree well with those presented in the original description of Sitjà-Bobadilla & Alvarez-Pellitero (1993) and with the SSU rDNA sequence data reported by Køie & Karlsbakk (2009).…”

Section: Discussionmentioning

confidence: 99%

“…Thus, Køie (2003) erected the genus Ellipsomyxa Køie, 2003 for species possessing ellipsoid spores with two polar capsules that discharge at opposite sides of the spore Køie (2003). To date, Ellipsomyxa contains ten species including Zschokkella mugilis Sitjà-Bobadilla & Alvarez-Pellitero, 1993 and Leptotheca fusiformis Davis, 1917, which have been transferred to Ellipsomyxa (see Køie & Karlsbakk, 2009;Gunter & Adlard, 2010).…”

Section: Introductionmentioning

confidence: 95%

“…nova Klȏkačeva, 1914;Zschokkella sp. ;and Ellipsomyxa mugilis (Sitjà-Bobadilla & Alvarez-Pellitero, 1993) (see Lom & Dyková, 2006a, b;Sitjà-Bobadilla & Alvarez-Pellitero, 1993;Køie & Karlsbakk, 2009). …”

Section: Introductionmentioning

confidence: 96%

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Molecular and morphological characterisation of two species of the genus Ellipsomyxa Køie, 2003 (Ceratomyxidae) from the gall-bladder of Liza saliens (Risso) off Tunisian coasts of the Mediterranean

et al. 2016

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During examination of some species of the family Mugilidae, two coelozoic myxozoans were observed in the gall-bladder of the leaping mullet, Liza saliens (Risso). Spore morphology allowed us to allocate them to the genus Ellipsomyxa Køie, 2003, one of which is described here as new. Ellipsomyxa kalthoumi n. sp. was observed forming globular pseudoplasmodia and free spores floating in the bile. Mature spores are ellipsoidal, measuring 13-21 × 10-15 (17.2 × 13.2) µm and possessing two equal spherical polar capsules, 5-6 (5.5) µm in diameter, opening subterminally in opposite directions, with nine polar filament coils. Morphological data and molecular analysis of the small subunit rDNA sequences helped identify this parasite as a new species of Elliposmyxa. The second species identified as E. mugilis (Sitjà-Bobadilla & Alvarez-Pellitero, 1993) has oval spores with rounded ends, measuring 10-11 × 7-9 (10.5 × 8.0) µm and possessing two polar subspherical capsules, 2.7-3.0 (2.8) µm in diameter, opening subterminally in opposite directions. Spore morphometry and molecular study of the small subunit (SSU) of the rRNA gene identified this species as E. mugilis described from the same host in the Western Mediterranean off Spain. Phylogenetic analysis revealed Elliposmyxa as a monophyletic clade and showed that E. mugilis, E. syngnathi Køie & Karlsbakk, 2009, E. adlardi Whipps & Font, 2012 and E. gobii Køie, 2003 group in a subclade containing the Tunisian isolate of E. mugilis whereas E. kalthoumi n. sp. appears in a second subclade together with four Australian species, E. maniliensis Heiniger & Adlard, 2014, E. apogoni Heiniger & Adlard, 2014, E. nigropunctatis Heiniger & Adlard, 2014 and E. arothroni Heiniger & Adlard, 2014.

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Ellipsomyxa arariensis n. sp. (Myxozoa: Ceratomyxidae), a new myxozoan parasite of Pygocentrus nattereri Kner, 1858 (Teleostei: Characidae) and Pimelodus ornatus Kner, 1858 (Teleostei: Pimelodidae) from Marajó Island, in the Brazilian Amazon region

et al. 2018

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Ellipsomyxa arariensis n. sp. was found in the gallbladder of Pygocentrus nattereri Kner, 1858 and Pimelodus ornatus Kner, 1858 from the Arari River on Marajó Island in Pará, Brazil. The new species has disporous plasmodium that varies in size and shape, with ellipsoidal mature spores in the sutural view that have a curved suture line. The spores are 12.6 (12.0-13.4) μm in length and 7.3 (6.7-8.0) μm in width. The two polar capsules present in the spore are pyriform and of equal size, with subterminal openings that project in opposite directions. The polar capsules are 3.5 (3.4-4.0) μm long and 2.6 (2.5-3.2) μm wide. Based on the partial sequences of the SSU rRNA gene of the Ellipsomyxa arariensis n. sp. spores found in Pygocentrus nattereri Kner, 1858 (1325 bps) and Pimelodus ornatus Kner, 1858 (1240 bps), the new species is clearly distinct from all the other myxozoan sequences deposited in GenBank. Based on Bayesian inference and p distances, the new species belongs to the "Ellipsomyxa clade", together with all the other Ellipsomxa species, reinforcing the monophyletic status of this genus. Overall, the morphological data and the partial sequences of the SSU rRNA gene provide a conclusive diagnosis of Ellipsomyxa arariensis n. sp. as a species distinct from all the other Ellipsomyxa species described previously.

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Ellipsomyxa syngnathi sp. n. (Myxozoa, Myxosporea) in the pipefish Syngnathus typhle and S. rostellatus (Teleostei, Syngnathidae) from Denmark

Cited by 17 publications

References 12 publications

Ultrastructural and phylogenetic description of Zschokkella auratis sp. nov. (Myxozoa), a parasite of the gilthead seabream Sparus aurata

Ultrastructural and phylogenetic description of Zschokkella auratis sp. nov. (Myxozoa), a parasite of the gilthead seabream Sparus aurata

Molecular and morphological characterisation of two species of the genus Ellipsomyxa Køie, 2003 (Ceratomyxidae) from the gall-bladder of Liza saliens (Risso) off Tunisian coasts of the Mediterranean

Ellipsomyxa arariensis n. sp. (Myxozoa: Ceratomyxidae), a new myxozoan parasite of Pygocentrus nattereri Kner, 1858 (Teleostei: Characidae) and Pimelodus ornatus Kner, 1858 (Teleostei: Pimelodidae) from Marajó Island, in the Brazilian Amazon region

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