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

• Type: Article in International Scientific Journal
• Date: 2014

Authors

Luis F Rangel (Author) Other; Sonia Rocha (Author) Other; Muhammad H Borkhanuddin (Author) Other; Gabor Cech (Author) Other; Ricardo Castro (Author) Other; Graca Casal (Author) Other; Carlos Azevedo (Author) Other; Ricardo Severino (Author) Other; Csaba Szekely (Author) Other; Maria J Santos (Author) FCUP

Journal

Title: Parasitology Research

Vol. 113

Pages: 3427-3437

ISSN: 0932-0113

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 15 Citations

Scopus - 0 Citations

Scientific classification

FOS: Medical and Health sciences > Health sciences

Other information

Authenticus ID: P-009-SNE

DOI: 10.1007/s00436-014-4008-4

Abstract (EN): 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) mu m in length, 8.3 +/- 0.4 (7.5-9.1) mu m in width, and 7.2 +/- 0.5 (6.3-8.4) mu m 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) mu m long and 2.7 +/- 0.1 (2.4-2.9) mu m 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 11