Ortholinea auratae n. sp. (Myxozoa, Ortholineidae) infecting the urinary bladder of the gilthead seabream Sparus aurata (Teleostei, Sparidae), in a Portuguese fish farm

Luis F. Rangel, Sónia Rocha, Muhammad H. Borkhanuddin, Gábor Cech, Ricardo Castro, Graça Casal, Carlos Azevedo, Ricardo Severino, C. Székely, Maria J. Santos

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A new myxosporean species, Ortholinea auratae n. sp., is described from the gilthead seabream, Sparus aurata Linnaeus, 1758 (Teleostei, Sparidae) from a fish farm in Algarve, Portugal. Plasmodia and spores were found in the urinary bladder and, less frequently, in the posterior kidney. Plasmodia were polymorphic, presenting an irregular cellular membrane due to the presence of several peripheral projections, which in turn were covered by a glycocalyx-like sheet. Mature spores were subspherical in valvular view and ellipsoidal in sutural view, measuring 9.0 ± 0.3 (8.2-10.1) μm in length, 8.3 ± 0.4 (7.5-9.1) μm in width, and 7.2 ± 0.5 (6.3-8.4) μm in thickness. The two valves comprising the spores displayed an intricate pattern of surface ridges and were also enveloped by a glycocalyx-like sheet. Two subspherical polar capsules, 3.2 ± 0.1 (2.9-3.6) μm long and 2.7 ± 0.1 (2.4-2.9) μm wide, were located at the anterior pole and displayed divergent orientation. The polar filament coiled in three to four turns. The comprehensive analysis of the parasite's ultrastructural observations and molecular data for the small subunit (SSU) ribosomal DNA (rDNA) gene identify O. auratae n. sp. as a new species, clustering together with other myxosporeans infecting the excretory system to form a subclade of the main freshwater clade.

Original languageEnglish
Pages (from-to)3427-3437
Number of pages11
JournalParasitology Research
Volume113
Issue number9
DOIs
Publication statusPublished - Sep 1 2014

Fingerprint

Myxozoa
Sea Bream
Sparidae
Fisheries
Sparus aurata
fish farms
Spores
bladder
Glycocalyx
Urinary Bladder
Plasmodium
spores
excretory system
Portugal
new species
Ribosomal DNA
Fresh Water
ribosomal DNA
Capsules
Cluster Analysis

ASJC Scopus subject areas

  • Parasitology
  • veterinary(all)
  • Insect Science
  • Infectious Diseases

Cite this

Ortholinea auratae n. sp. (Myxozoa, Ortholineidae) infecting the urinary bladder of the gilthead seabream Sparus aurata (Teleostei, Sparidae), in a Portuguese fish farm. / Rangel, Luis F.; Rocha, Sónia; Borkhanuddin, Muhammad H.; Cech, Gábor; Castro, Ricardo; Casal, Graça; Azevedo, Carlos; Severino, Ricardo; Székely, C.; Santos, Maria J.

In: Parasitology Research, Vol. 113, No. 9, 01.09.2014, p. 3427-3437.

Research output: Contribution to journalArticle

Rangel, Luis F. ; Rocha, Sónia ; Borkhanuddin, Muhammad H. ; Cech, Gábor ; Castro, Ricardo ; Casal, Graça ; Azevedo, Carlos ; Severino, Ricardo ; Székely, C. ; Santos, Maria J. / Ortholinea auratae n. sp. (Myxozoa, Ortholineidae) infecting the urinary bladder of the gilthead seabream Sparus aurata (Teleostei, Sparidae), in a Portuguese fish farm. In: Parasitology Research. 2014 ; Vol. 113, No. 9. pp. 3427-3437.
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AU - Casal, Graça

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