Light and Ultrastructural Description of Meglitschia mylei n. sp. (Myxozoa) from Myleus rubripinnis (Teleostei: Serrasalmidae) in the Amazon River System

  title={Light and Ultrastructural Description of Meglitschia mylei n. sp. (Myxozoa) from Myleus rubripinnis (Teleostei: Serrasalmidae) in the Amazon River System},
  author={C. Azevedo and M. Ribeiro and S. Clemente and G. Casal and L. Lopes and P. Matos and S. Al-Quraishy and E. Matos},
  journal={Journal of Eukaryotic Microbiology},
ABSTRACT. Meglitschia mylei n. sp. found in the gall bladder of the teleostean fish Myleus rubripinnis (Serrasalmidae) from the middle Amazonian region of Brazil is described using light and transmission electron microscopy. The spores observed in the bile averaged 24.6±0.8 μm long, 8.7±0.4 μm wide and 5.1±0.3 μm thick and were strongly furcate and arcuate ∩‐shaped composed of two symmetric equal‐sized valves, up to ∼70 nm thick. Each valve possessed one opposed tapering appendage, 20.1±0.7 μm… Expand
Fine Structure of the Plasmodia and Myxospore of Ellipsomyxa gobioides n. sp. (Myxozoa) Found in the Gallbladder of Gobioides broussonnetii (Teleostei: Gobiidae) from the Lower Amazon River
The objective of this study was to characterize this new species based on its morphological differences from the three previously described species, and is the first reported species of genus Ellipsomyxa from among the South American fauna. Expand
Sphaerospora festivus n. sp., a parasite of the flag cichlid, Mesonauta festivus (Teleostei: Cichlidae) from eastern Amazon, Brazil.
  • L. S. Bittencourt, R. Ferreira, +5 authors E. Matos
  • Medicine
  • Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria
  • 2021
A new species of the genus Sphaerospora found in the urinary bladder of the flag cichlid, Mesonauta festivus collected in Corre Água district of the municipality of Macapá, Amapá State (Brazil), is described and the relationship of the new species and related myxosporean species is determined. Expand
Molecular diagnostic based on 18S rDNA and supplemental taxonomic data of the cnidarian coelozoic Ceratomyxa (Cnidaria, Myxosporea) and comments on the intraspecific morphological variation
Strong morphological differences were observed between the newly isolated myxospores obtained and the previously described C. amazonensis; however, molecular assessment, based on 18S rDNA, revealed a high similarity (99.91%), with only a single nucleotide base change. Expand
Erection of Unicapsulocaudum mugilum gen. et sp. nov. (Myxozoa: Ceratomyxidae) based on its morphological and molecular data
The erection of a new genus Unicapsulocaudum is proposed in Ceratomyxidae, having an ophidian-like form with a horn-like protuberance and a long tapering tail and the sequence of its small subunit ribosomal DNA does not match any myxozoans sequenced to date. Expand
Description of Triangulamyxa psittaca sp. nov. (Myxozoa: Myxosporea), a New Parasite in the Urinary Bladder of Colomesus psittacus (Teleostei) from the Amazon River, with Emphasis on the Ultrastructure of Plasmodial Stages
The parasitic infection found in the urinary bladder of the teleostean Colomesus psittacus is concluded as a new species, herein named Triangulamyxa psittaca sp. Expand
Ceratomyxa gracillima n. sp. (Cnidaria: Myxosporea) provides evidence of panmixia and ceratomyxid radiation in the Amazon basin
The Amazonian freshwater Ceratomyxa species may represent a radiation that originated during marine incursions into the Amazon basin that introduced an ancestral lineage in the late Oligocene or early Miocene. Expand
Morphology, phylogeny and seasonal prevalence of Ceratomyxa arabica n. sp. (Myxozoa: Myxosporea) infecting the gallbladder of Acanthopagrus bifasciatus (Pisces: Sparidae) from the Arabian Gulf, Saudi Arabia
A new myxozoan species was recovered from the gallbladder of Acanthopagrus bifasciatus from the Arabian Gulf in Saudi Arabia, being most closely related to Ceratomyxa cardinalis with a sequence similarity of 97.77 %. Expand
Morphological and molecular aspects of Ceratomyxa mehlhorni n. sp., a parasite of the golden trevally Gnathanodon speciosus in the Arabian Gulf off the Saudi Arabian coast, with data on its seasonal prevalence
A maximum likelihood phylogenetic tree showed a close association between the new species and a variety of ceratomyxid species, including Ceratomyxa arabica reported from the Arabian Gulf, and proposed the present form was a new species. Expand
Motility, morphology and phylogeny of the plasmodial worm, Ceratomyxa vermiformis n. sp. (Cnidaria: Myxozoa: Myxosporea)
A motile, elongate plasmodium that undergoes coordinated undulatory locomotion is illustrated, revealing remarkable convergence to a functional worm at the cellular level. Expand
Meglitschia spp.(Myxozoa) Infecting the Gallbladder of Eugerres Brasilianus (Teleostei: Gerreidae) from the Atlantic Coast of Maceió (Brazil)
The present study provides light and ultrastructural for the description of Meglitschia sp. Expand


Myxozoan genera: definition and notes on taxonomy, life-cycle terminology and pathogenic species.
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. Expand
Suborder Sphaeromyxina ( Myxosporea , Bivalvul - ida ) its structure and place in myxosporidian classification
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Table 1. Comparison of shape and dimensions of the spores from species of Meglitschia spp. infecting the gall bladder of fish. Meglitschia spp. Hosts/habitat/country