Motility, morphology and phylogeny of the plasmodial worm, Ceratomyxa vermiformis n. sp (Cnidaria: Myxozoa: Myxosporea)

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dc.citation.issue2
dc.citation.volume144
dc.contributor.authorAdriano, E. A. [UNIFESP]
dc.contributor.authorOkamura, B.
dc.coverageNew York
dc.date.accessioned2020-07-17T14:03:06Z
dc.date.available2020-07-17T14:03:06Z
dc.date.issued2017
dc.description.abstractThe Myxozoa demonstrate extensive morphological simplification and miniaturization relative to their free-living cnidarian ancestors. This is particularly pronounced in the highly derived myxosporeans, which develop as plasmodia and pseudoplasmodia. To date, motility in these stages has been linked with membrane deformation (e.g. as pseudopodia and mobile folds). Here we illustrate a motile, elongate plasmodium that undergoes coordinated undulatory locomotion, revealing remarkable convergence to a functional worm at the cellular level. Ultrastructural and confocal analyses of these plasmodia identify a highly differentiated external layer containing an actin-rich network, long tubular mitochondria, abundant microtubules, a secreted glycocalyx layer, and an internal region where sporogony occurs and which contains homogeneously distributed granular/fibrillar material. We consider how some of these features may support motility. We also describe the species based on spore morphology and SSU rDNA sequence data, undertake molecular phylogenetic analysis to place it within an early-diverging clade of the ceratomyxids, and evaluate the resultant implications for classification (validity of the genus Meglitschia) and for inferring early host environments (freshwater) of ceratomyxids.en
dc.description.affiliationUniv Fed Sao Paulo UNIFESP, Dept Ciencias Biol, Rua Prof Artur Riedel 275, BR-09972270 Diadema, SP, Brazil
dc.description.affiliationNat Hist Museum, Dept Life Sci, Cromwell Rd, London SW7 5BD, England
dc.description.affiliationUnifespUniv Fed Sao Paulo UNIFESP, Dept Ciencias Biol, Rua Prof Artur Riedel 275, BR-09972270 Diadema, SP, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipSao Paulo Research Foundation-FAPESP
dc.description.sponsorshipCNPq
dc.description.sponsorshipVisiting Researcher Programme-FAPESP
dc.description.sponsorshipIDFAPESP: 2013/21374-6
dc.description.sponsorshipIDCNPq: 200514/2015-6
dc.description.sponsorshipIDVisiting Researcher Programme-FAPESP: 2015/19463-6
dc.format.extent158-168
dc.identifierhttp://dx.doi.org/10.1017/S0031182016001852
dc.identifier.citationParasitology. New York, v. 144, n. 2, p. 158-168, 2017.
dc.identifier.doi10.1017/S0031182016001852
dc.identifier.issn0031-1820
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/55169
dc.identifier.wosWOS:000395068400005
dc.language.isoeng
dc.publisherCambridge Univ Press
dc.relation.ispartofParasitology
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectultrastructureen
dc.subjectmitochondrial distributionen
dc.subjectvermiform morphologyen
dc.subjectSSU rDNAen
dc.subjectconfocal microscopyen
dc.subjectfreshwater fish hostsen
dc.subjectAmazoniaen
dc.titleMotility, morphology and phylogeny of the plasmodial worm, Ceratomyxa vermiformis n. sp (Cnidaria: Myxozoa: Myxosporea)en
dc.typeinfo:eu-repo/semantics/article
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