Ortholinea concentrica n. sp (Cnidaria: Myxozoa) from the Patagonian seabass Acanthistius patachonicus (Jenyns, 1840) (Perciformes: Serranidae) off Patagonia, Argentina

0499913 - BC 2019 RIV DE eng J - Journal Article
Alama-Bermejo, Gema - Hernández-Orts, J.S.
Ortholinea concentrica n. sp (Cnidaria: Myxozoa) from the Patagonian seabass Acanthistius patachonicus (Jenyns, 1840) (Perciformes: Serranidae) off Patagonia, Argentina.
Parasitology Research. Roč. 117, č. 12 (2018), s. 3953-3963. ISSN 0932-0113. E-ISSN 1432-1955
R&D Projects: GA ČR(CZ) GP14-28784P; GA ČR(CZ) GBP505/12/G112
Institutional support: RVO:60077344
Keywords : Myxozoa * Marine fish * Urinary system * South America * Taxonomy * SSU rDNA * Phylogeny
OECD category: Veterinary science
Impact factor: 2.067, year: 2018

The Patagonian seabass Acanthistius patachonicus (Jenyns, 1840) (Serranidae) is a marine fish valued for commercial and sport fisheries from Argentina. We report a new myxosporean (Cnidaria: Myxozoa) infecting the urinary system of the Patagonian seabass from San Antonio Bay, San Matias Gulf, on the Atlantic Ocean. The mature myxospores were subspherical, 8.2-11.0mx7.9-11.0m and 7.7-9.0m in thickness, two subspherical polar capsules, 2.4-3.8mx2.3-3.6m, with 3 to 4 turns of the polar tubule, openings on different valves in almost opposite directions. Ornamented shell valves exhibited 17-20 concentrically organized surface ridges. SSU rDNA phylogenetics analyses placed the new species in the freshwater urinary tract clade, clustering in a clade formed by Myxobilatus gasterostei (Parisi, 1912), Acauda hoffmani Whipps, 2011, and other Ortholinea spp. Based on spore morphology, site of infection, and molecular data, we described this myxozoan as Ortholinea concentrica n. sp.
Permanent Link: http://hdl.handle.net/11104/0292104